Principal Software Engineer

Job Description: Principal Software Engineer

(Pega, AI & Full-Stack Architecture)

Location: Dallas, TX (On-site)

Type: Contract

Experience Level: Principal (10+ Years)

Role Summary

We are seeking a visionary Principal Software Engineer to lead the design, architecture, and implementation of a next-generation enterprise automation platform. This is a high-impact role designed for a technical leader who thrives at the intersection of Low-Code orchestration and High-Code innovation.

The ideal candidate will serve as the technical authority for the Pega ecosystem, specifically driving the adoption of Pega Constellation to deliver modern, high-performance user experiences. You will bridge the gap between Pega’s orchestration capabilities and custom-built microservices using .NET and Python, while pioneering the integration of Generative AI and Large Language Models (LLMs) to create "intelligent" automated workflows.

Key Responsibilities

Architectural Leadership & Pega Strategy

· Define the technical roadmap for enterprise-scale Pega implementations, moving beyond traditional UI toward the Pega Constellation architecture.

· Design hybrid architectures that seamlessly integrate Pega’s business logic layer with custom-built frontend components and backend microservices.

· Establish best practices for Case Management, Data Modeling, and Integration patterns within the Pega Infinity platform.

Full-Stack & Frontend Innovation

· Lead the development of sophisticated, highly responsive user interfaces using Angular, ensuring they meet modern UX/UI standards and integrate flawlessly with Pega Constellation.

· Architect and develop robust, scalable backend services and APIs using .NET (C#) and Python to support complex business logic and data processing.

· Oversee the lifecycle of API development (RESTful/GraphQL) to ensure seamless communication between Pega, legacy systems, and new microservices.

AI & LLM Integration

· Architect and implement AI-driven features within enterprise workflows, leveraging LLMs (e.g., OpenAI, Anthropic, or open-source models via LangChain/LlamaIndex).

· Develop RAG (Retrieval-Augmented Generation) patterns to allow Pega-driven processes to interact intelligently with enterprise knowledge bases.

· Lead the experimentation and deployment of Agentic workflows, where AI agents perform autonomous tasks within the Pega orchestration layer.

Technical Mentorship & Governance

· Act as a hands-on mentor to senior and mid-level engineers, conducting deep-dive code reviews and architectural critiques.

· Drive engineering excellence by implementing CI/CD pipelines, automated testing strategies, and robust DevOps practices for both Pega and pro-code environments.

· Collaborate with Product Owners and stakeholders to translate complex business requirements into scalable technical specifications.

Required Technical Skills

· Pega Ecosystem: Expert-level experience with Pega Infinity, specifically Pega Constellation and its design principles. Deep understanding of Case Management, Data Pages, and Integration Designer.

· Frontend Mastery: Advanced proficiency in Angular (latest versions), TypeScript, RxJS, and modern CSS/SCSS.

· Backend Development: Proven experience building enterprise-grade applications using .NET (Core/C#) and Python.

· AI/ML Engineering: Practical experience building with LLMs, prompt engineering, and frameworks like LangChain or LlamaIndex. Understanding of vector databases (e.g., Pinecone, Milvus, or Weaviate).

· Integration & API: Expert knowledge of RESTful API design, OAuth2, and asynchronous messaging patterns.

· Cloud & DevOps: Experience with cloud platforms (Azure, AWS, or GCP) and containerization (Docker, Kubernetes).

Preferred Qualifications

· Pega Certified Lead System Architect (LSA) or similar high-level certification.

· Experience in "Composable Architecture"breaking down monolithic workflows into modular, reusable services.

· Background in data engineering or working with large-scale data pipelines to feed AI models.

· Experience in highly regulated industries (FinTech, Healthcare, or Insurance) where security and compliance are paramount.

Soft Skills

· Strategic Thinking: Ability to see the "big picture" and how individual technical choices impact long-term business goals.

· Communicator: Ability to explain complex technical concepts (like LLM latency or Constellation rendering) to non-technical stakeholders.

· Problem Solver: A passion for solving "impossible" integration challenges.

Join a veteran-owned team that has delivered on-time, on-budget, and on-target for the Department of Defense and federal agencies since 2014. At ACC3 International you get the stability and support of a big-company contractor with the hands-on, homegrown work ethic of a close-knit team. You'll do work that matters for the warfighter and for government modernization, in a veteran-friendly culture that earned the 2023 ESGR Patriot Award for supporting Guard and Reserve members. We offer competitive benefits, real room to grow as we expand into our own AI and technology platforms, and leaders who value integrity, collaboration, and results. Come build a career with purpose.