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Senior Full Stack UI Engineer

Quantum US

Englewood, CO 80112 • 10/8/2026

Job Description

Job Description

Key Responsibilities

Full-Stack Architecture & Development

  • Design, architect, and develop modern web applications usingReact,TypeScript, andVue.
  • Build andmaintainBackend-for-Frontend (BFF)and API services (RESTand/orGraphQL) that aggregate, adapt, andoptimizeback-end data for UI consumption.
  • Translate UI/UX requirements into efficient back-end data models, API contracts, and service boundaries.
  • Define and evolve front-end and BFF architectures with a focus on performance, scalability, security, and maintainability.

Front-End & Design System Collaboration

  • Collaborate with UX and product teams to translateFigmadesigns into high-quality, reusable UI components aligned with shared design systems andcomponentlibraries.
  • Drive UI performance optimization, accessibility, and cross-browser compatibility.
  • Contribute to and consume sharedcomponentlibraries acrossReact and Vueecosystems.

Cloud Infrastructure & Reliability

  • Architect andmaintainback-end infrastructure inAWS (EC2, RDS, SQS, SES, ECR)and containerized environments (Docker, Kubernetes).
  • Own and improve API performance through caching strategies, query optimization, and efficient data transformation.
  • Respond to production incidentsin a timely mannerand contribute to observability, monitoring (Prometheus/Grafana), and reliability initiatives.

Back-End Security

  • Integrate authentication and authorization using identity platforms such asKeycloak, including SSO and role-based access control.
  • Build secure, maintainable server-side functionality and contribute to security tooling across UI and back-end layers.

Data Management

  • Design, evolve, andoptimizerelational database schemas (PostgreSQL, MySQL) and caching layers (Redis) in support of UI-centric use cases.
  • Ensure data consistency, integrity, and performance across services.

Technical Leadership

  • Lead code reviews,establishbest practices, and ensure consistent engineering standards acrossfront-endand back-end layers.
  • Mentor junior and mid-level engineers and contribute to raising the overall quality bar of the team.
  • Participate actively in design reviews, sprint planning, and cross-team technical discussions.

Quality & Testing

  • Proactivelyidentifytechnical debt and leadrefactoringor modernization efforts.
  • Champion high code quality through thoughtful design, automated unit/integration/e2e testing, andCI/CDpipeline discipline.

Qualifications

Required

  • Experience:8+ years of professional experience building full-stack, user-facing web applications, including ownership of production services.
  • Front-End:Strong hands-on experience with React in production environments; advancedproficiencyin JavaScript, TypeScript, HTML5, and CSS3.
  • Back-End & APIs:Experience designing and implementing UI-focused back-end services (Node.js, Python, PHP, or similar) using REST and/orGraphQL.
  • Databases:Strong experience with relational (PostgreSQL, MySQL)and time series databases (Prometheus).
  • Cloud & DevOps:Experience working in cloud environments with containerization and orchestration.
  • UX Collaboration:Experience working closely with UX teams and implementing designs from Figma or similar design tools.
  • Accessibility:Strong understanding of responsive design, accessibility standards, and browser compatibility.
  • Tooling & Testing:Solid experience with Git, GitLab CI/CD, and modern automated testing frameworks.
  • Debugging:Strong debugging and troubleshooting skills across front-end, API, and data layers.
  • Ability to work effectively in a collaborative, in-office engineering environment.

Preferred

  • Experience with the Laravel framework in PHP.
  • Familiarity with identity/auth platforms and API securitypatterns.
  • Background instorage, infrastructure, or data-intensive/enterprise-scale systems.

Education

  • Bachelor’s degree in Computer Science, Computer Engineering, or a related field (or equivalent practical experience).

Soft Skills

  • Strong technical leadership andproblemsolvingskills.
  • Clear and effective communication with both technical andnontechnicalstakeholders.
  • High attention to detail and a strong commitment to code quality.
  • Ability to influence technical direction and inspire best practices across the team.
  • Comfortable balancinghandsondevelopment with mentorship and technical leadership.