Note: The job is a remote job and is open to candidates in USA. OnFrontiers is an expert network aiming to transform government contracting by connecting organizations with a vetted network of practitioners. The role of Full-Stack Engineer involves building and shipping features for an expert intelligence platform, focusing on LLM-powered systems and core SaaS functionalities.

Responsibilities

• Build LLM-powered systems for expert matching and solicitation intelligence
• Build and improve our vector-backed indexes of experts and solicitations, and the search that connects them (OpenSearch, PGVector, Go)
• Ship features that accelerate talent mobility by graphing knowledge at the individual work-experience level
• Build core SaaS platform and API features across the stack (Python, Go, React)
• Take features from idea to production: write clean, tested, maintainable code and own what you ship
• Work AI-first: pair with Claude and our internal tooling to design, write, test, and review code, and help improve how we build
• Collaborate directly with the engineering lead, product, and leadership to ship quickly and iteratively
• Balance startup speed with the things that keep a platform healthy: security, reliability, and scalability

Skills

• Proven experience shipping full-stack software in Python, React, and AWS
• Hands-on experience with LLMs, LLM orchestration, vector search, or AI-first product development
• You already build with AI tools daily (Claude, Copilot, or similar) and want to go deeper
• Startup speed: comfortable with ambiguity, fast iteration, and wearing many hats
• Solid engineering fundamentals: you write readable, tested code and care about what happens in production
• Mission-driven, hungry, and eager to own outcomes
• Comfortable engaging on data security and compliance topics
• Go is a plus
• CMMC / FedRAMP / SOC 2 familiarity a plus, not required

Benefits

• Equity upside: a meaningful ownership stake.
• Growth path: join early and grow with the team, with room to take on more scope and seniority as we expand.

Company Overview