Westminster, CO • (24.1 miles) • Full Time • $158,000 to $189,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Denver, CO • (16 miles) • Full Time • $97,750 to $138,000 / yr • 10/23/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! This is a full-time, onsite role based at our headquarters in Denver, CO. As a Pulsed Power Operations Engineer, you will apply your technical and operational skills to operating, troubleshooting, and maintaining the pulsed power components in a state-of-

Boulder, CO 80301 • (37 miles) • Full Time • 10/21/2026

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. SciTec cannot sponsor or assume sponsorship of employee work visas of any type. Further, U.S. citizenship is a requirement to obtain and keep a security cleara

Arvada, CO 80002 • (18.9 miles) • Full Time • $24.00 / hr • 10/15/2026

As a Mechanical Engineering Intern at Lunar Outpost, you will participate in the design, review, fabrication, assembly, and maintenance of numerous cutting-edge robotic systems.All interns will work directly alongside full-time engineers on real, engaging, and impactful projects, providing tangible value to Lunar Outpost products. This internship offers a truly end-to-end experience that promotes collaboration at every stage of autonomous robotic development. Working Conditions / Schedule: This position is required to be onsite Monday, Tuesday, Thursday, and Friday from 9:00 a.m. to 5:00 p.m. Where applicable, employees may work remotely on Wednesdays from 9:00 a.m. to 5:00 p.m. Additional hours may be required based on business needs. Qualifications: Pursuing a Bachelor’s or Master's degr

Brighton, CO • (31.1 miles) • Full Time • 10/10/2026

Crusoe is on a mission to accelerate the abundance of energy and intelligence . As the only vertically integrated AI infrastructure company built from the ground up, we own and operate each layer of the stack from electrons to tokens to power the world's most ambitious AI workloads. When you join Crusoe, you join a team that is building the future, faster. We're in the midst of the greatest industrial revolution of our time. The demand for AI compute is boundless, and power is a bottleneck. We're solving that with an energy-first approach that makes AI infrastructure better for the world and faster for the people innovating with AI. We're looking for problem-solving, opportunity-finding teammates with a sense of urgency, who believe in the scale of our ambition and thrive on a path not ful

Denver, CO • (16 miles) • Full Time • $96,250 to $137,500 / yr • 11/6/2026

What Success Looks Like (Objectives): Candidates must be willing to participate in at least one in-person interview, which may include a live whiteboarding or technical assessment session. This role addresses technical complexities within a high-scale Ecommerce platform where performance optimization and component stability are critical. The position resolves engineering challenges related to GraphQL over-fetching, database bottlenecks, cache management, and transitioning legacy components into event-driven services. The engineer applies technical analysis, automated workflows, and AI tooling to mitigate technical debt and ensure reliable feature delivery within the ecommerce subsystem. What Success Looks Like (Objectives) Design and implement serverless microservices to transition monolit

Boulder, CO • (36.6 miles) • Full Time • $140,000 to $164,989 / yr • 11/6/2026

At Atom Computing, we build quantum computers using arrays of optically trapped neutral atoms that will empower customers to achieve unprecedented computational breakthroughs. Join a world-class team of scientists, engineering, and business professionals to advance the state-of-the-art in quantum computing. We're looking for a Mechanical Engineer to join our Opto-Mechanical Engineering team to focus on designing the physical systems that house, protect, and connect our Control Systems and associated electronic products - from enclosures and chassis to thermal management and cabling. You'll work closely with electrical, firmware, and systems engineers to turn functional requirements into manufacturable, reliable hardware, primarily for 19" rack-mount and other pluggable instrumentation form

Westminster, CO • (24.1 miles) • Full Time • $113,000 to $136,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Denver, CO • (16 miles) • Full Time • $120,000 to $160,000 / yr • 10/23/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! This is a full-time, onsite role based at our headquarters in Denver, CO. As a Pulsed Power Physicist , you will work on the science and engineering of electron-beam cathode systems for Xcimer's pulsed power driven inertial fusion energy program. The cor

Boulder, CO 80301 • (37 miles) • Full Time • 10/21/2026

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security. For over forty-five years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. SciTec cannot sponsor or assume sponsorship of employee work visas of any type. Further, U.S. citizenship is a requirement to obtain and keep a security clearance. Applicants that

Arvada, CO 80002 • (18.9 miles) • Full Time • $24.00 / hr • 10/15/2026

All interns will work directly alongside full-time engineers on real, engaging, and impactful projects, providing tangible value to Lunar Outpost products. This internship offers a truly end-to-end experience that promotes collaboration at every stage of autonomous robotic development. Working Conditions / Schedule: This position is required to be onsite Monday, Tuesday, Thursday, and Friday from 9:00 a.m. to 5:00 p.m. Where applicable, employees may work remotely on Wednesdays from 9:00 a.m. to 5:00 p.m. Additional hours may be required based on business needs. Qualifications: Pursuing a Bachelor’s or Master's degree in Computer Science or a related field Experience with NodeJS and React Experience with Python Experience with relational databases such as MySQL or PostgreSQL Understanding

Denver, CO • (16 miles) • Full Time • $85,000 to $103,400 / yr • 11/3/2026

What Success Looks Like (Objectives): Scaling manufacturing operations requires relentless focus on operational excellence (OPEX); eliminating waste, reducing downtime, standardizing work, and driving continuous improvement across production lines. This role sits at the intersection of process engineering, controls, and Lean manufacturing, partnering with operations and maintenance teams to optimize how work flows, how equipment performs, and how costs are controlled. You'll bring strong industrial/process engineering fundamentals and a continuous-improvement mindset; we'll invest in developing your controls and automation depth (including PLC programming) over time. What Success Looks Like (Objectives) Analyze, standardize, and optimize manual and automated manufacturing processes to impr

Westminster, CO • (24.1 miles) • Full Time • $158,000 to $189,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Denver, CO • (16 miles) • Full Time • $25.00 to $35.00 / hr • 10/22/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! Join Xcimer’s engineering internship program and gain hands-on experience in designing and building cutting-edge laser-driven inertial fusion hardware and software. As a summer intern, you will be integral to developing the systems needed for the world’s

Boulder, CO • (36.6 miles) • Full Time • $120,000 to $150,000 / yr • 10/21/2026

At Atom Computing, we build quantum computers using arrays of optically trapped neutral atoms that will empower customers to achieve unprecedented computational breakthroughs. Join a world-class team of scientists, engineers, and business professionals to advance the state-of-the-art in quantum computing. We are seeking a Laser Engineer to join our Quantum Engineering Department. Our neutral-atom quantum computers depend on a growing network of precision laser and optical systems that need to run reliably around the clock. In this role, you'll work hands-on with that hardware: aligning, characterizing, and optimizing systems on the bench, then turning that work into documented, repeatable designs the team can build on. You'll partner closely with experimental physicists, hardware engineers

Boulder, CO 80301 • (37 miles) • Full Time • 10/21/2026

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered. SciTec has an immediate opportunity for a talented engineer to support our programs delive

Arvada, CO 80002 • (18.9 miles) • Full Time • 10/11/2026

Are you passionate about shaping the future of humanity's presence in space? Lunar Outpost, an industry leader in space robotics and planetary vehicles, invites you to join our team! Lunar Outpost is dedicated to creating a permanent presence in space while also driving positive impacts here on Earth. We are currently seeking a Principal RF Engineer to contribute to our mission in a dynamic startup environment. As a Principal RF Engineer, you will serve as the company’s RF subject-matter expert, develop complex RF systems, and providetechnical leadership for Lunar Outpost programs. Take the #NextLeap with Lunar Outpost and work on the Lunar Terrain Vehicle (LTV), which will carry NASA astronauts farther than they've ever been before on the lunar surface! Working Conditions / Schedule: This

Westminster, CO • (24.1 miles) • Full Time • $184,000 to $225,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Boulder, CO • (36.6 miles) • Full Time • 10/21/2026

At Atom Computing, we build quantum computers using arrays of optically trapped neutral atoms that will empower customers to achieve unprecedented computational breakthroughs. Join a world-class team of scientists, engineers, and business professionals to advance the state-of-the-art in quantum computing. Atom Computing is looking for a Senior Software Engineer to help design and build the high-performance control systems that drive our next-generation quantum computing platforms. In this role, you’ll work across embedded software, real-time systems, GPU/FPGA acceleration, and hardware orchestration to deliver deterministic, high-throughput control pipelines. Your work will directly shape how our quantum processors operate, scale, and perform. This is a hands-on engineering role for someon

Boulder, CO 80301 • (37 miles) • Full Time • 10/21/2026

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered. SciTec is seeking a Test Automation Engineer to design, build, and maintain a continuous d

Denver, CO • (16 miles) • Full Time • $25.00 to $35.00 / hr • 10/20/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! Join Xcimer’s engineering internship program and gain hands-on experience in designing and building cutting-edge laser-driven inertial fusion hardware and software. As a summer intern, you will be integral to developing the systems needed for the world’s

Westminster, CO • (24.1 miles) • Full Time • $158,000 to $189,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Denver, CO • (16 miles) • Full Time • $140,250 to $165,000 / yr • 10/20/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! This is a full-time, onsite role based at our headquarters in Denver, CO. Join our team as a Pulsed Power Manufacturing Engineer, where you'll optimize production of pulsed power assemblies and integrated products, for quality and throughput. Your role wi

Boulder, CO 80301 • (37 miles) • Full Time • 10/20/2026

SciTec, a Firefly Aerospace company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; andaircraftsurvivability missions. Important Notice :SciTecexclusively works on U.S. government contracts that require U.S. citizenship for all employees.SciTeccannot sponsor or assume sponsorship of employee work visas of any type. Further, U.S. citizenship is a requirement to obtain and keep a security clearance.

Westminster, CO • (24.1 miles) • Full Time • $158,000 to $189,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Boulder, CO 80301 • (37 miles) • Full Time • 10/17/2026

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For over forty-five years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered. We are seeking a Senior Staff/Senior Systems Engineer to support the design, integration, and certi

Denver, CO • (16 miles) • Full Time • $140,000 to $165,000 / yr • 10/16/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! This is a full-time, onsite role based at our headquarters in Denver, CO. As the Technical Lead Manager for Power Electronics & EMI/EMC, you will apply your skills to technical and functional leadership of a team of individuals working to develop and matu

Westminster, CO • (24.1 miles) • Full Time • $133,000 to $161,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Boulder, CO 80301 • (37 miles) • Full Time • 10/17/2026

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice : SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. SciTec cannot sponsor or assume sponsorship of employee work visas of any type. Further, U.S. citizenship is a requirement to obtain and keep a security clear

Denver, CO • (16 miles) • Full Time • $25.00 to $35.00 / hr • 10/12/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! Join Xcimer’s engineering internship program and gain hands-on experience in designing and building cutting-edge laser-driven inertial fusion hardware and software. As an intern, you will be integral to developing the systems needed for the world’s first

Westminster, CO • (24.1 miles) • Full Time • $133,000 to $161,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Boulder, CO 80301 • (37 miles) • Full Time • 10/13/2026

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. SciTec cannot sponsor or assume sponsorship of employee work visas of any type. Further, U.S. citizenship is a requirement to obtain and keep a security cleara

Denver, CO • (16 miles) • Full Time • $25.00 to $35.00 / hr • 10/12/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! Join Xcimer’s engineering internship program and gain hands-on experience in designing and building cutting-edge laser-driven inertial fusion hardware and software. As an intern, you will be integral to developing the systems needed for the world’s first

Westminster, CO • (24.1 miles) • Full Time • $133,000 to $161,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Denver, CO • (16 miles) • Full Time • $200,000 to $225,000 / yr • 10/12/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion! This is a full-time, onsite role based at our headquarters in Denver, CO. As the Lead Experimental Physicist , you will be responsible for independently driving complex laser-based experiments from definition through execution and analysis. This role re

Boulder, CO 80301 • (37 miles) • Full Time • 10/10/2026

SciTec, a Firefly Aerospace company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered. SciTec has an immediate opening for an Infrastructure Principal Engineer to work with the

Boulder, CO 80301 • (37 miles) • Full Time • 11/6/2026

SciTec, a Firefly Aerospace company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered. SciTec has immediate opportunities for an experienced Senior Cybersecurity Engineer to wor

Westminster, CO • (24.1 miles) • Full Time • $158,000 to $189,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,

Denver, CO • (16 miles) • Full Time • $25.00 to $35.00 / hr • 10/12/2026

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! Join Xcimer’s engineering internship program and gain hands-on experience in designing and building cutting-edge laser-driven inertial fusion hardware and software. As an intern, you will be integral to developing the systems needed for the world’s first

Boulder, CO 80301 • (37 miles) • Full Time • 11/5/2026

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions. Important Notice : SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. SciTec cannot sponsor or assume sponsorship of employee work visas of any type. Further, U.S. citizenship is a requirement to obtain and keep a security clear

Westminster, CO • (24.1 miles) • Full Time • $133,000 to $161,000 / yr • 10/30/2026

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate,