Senior Full Stack Engineer — Agentic & External Integrations
Peraton · Reston, VA, US
About this role
## Senior Full Stack Engineer — Agentic & External Integrations ### Company Peraton (Reston, VA) ### Overview Peraton is seeking a **Senior Full Stack Engineer** to help build the next generation of **agentic AI platforms**—specifically the **integrations, connectors, and orchestration plumbing** that enable agents to reach external APIs, enterprise systems, document repositories, and knowledge graphs to produce real outcomes. ### Responsibilities - **Design and build integrations** between agents and external sources (public APIs, licensed feeds, partner/customer enterprise systems, document repositories, structured databases). - **Package integrations as agent-callable tools** with clean interfaces, predictable I/O, reliable error handling, and documentation. - **Own production trustworthiness concerns** for external data: auth, pagination, rate limiting, retry/backoff, schema mapping, deduplication, and caching. - **Build and evolve orchestration** for multi-step agent workflows (tool routing, parallel execution, human-in-the-loop checkpoints). - Contribute across the stack: - **FastAPI** services - **React** UI for tool configuration and observability - **Postgres** schemas - Containerized deployments - **Instrument and validate** what you ship (traces, metrics, evals, regression tests for non-deterministic agent behavior). - Partner with platform, security, and mission engineers to move capabilities from **prototype to production** within federal compliance boundaries. ### Why This Role Stands Out - **Wire agents to the real world**: each integration expands what the agentic platform can do. - **Leading-edge tech**: Python 3.12+, FastAPI, React, Postgres, Docker, and modern LLMs (OpenAI, Anthropic, Google, and more). - **Hands-on agent engineering**: agentic flows, human-in-the-loop, and evals with real customers. - **Product-centric delivery** with FedRAMP/FIPS/IronBank/OPA in scope. ### What You’ll Bring (Qualifications) - **Must-haves**: - BS + 8 years, Associate + 10 years, MS + 6 years, or HS + 12 years (with meaningful exposure to AI/ML or LLM-based products) - Hands-on experience building with **AI agents** (multi-step reasoning, tool use, RAG pipelines, autonomous task execution) and integrating LLMs into production/near-production - Demonstrated experience designing/building **integrations** to external information sources - Demonstrated experience packaging external capabilities as **agent tools/skills** with reliable interfaces and documentation - Strong **Python (3.12+)** skills (async/await, type hints, modern tooling) - Cross-stack comfort: **FastAPI/Python**, **React**, **Docker**, **PostgreSQL** - Experience consuming web APIs (REST/GraphQL or similar) and handling production integration concerns (auth, pagination, rate limiting, retry/backoff, schema mapping, deduplication, caching) - Experience with workflow/task orchestration (Airflow/Prefect/Celery or similar) or comparable orchestration patterns - Familiarity with agentic frameworks/concepts (chains, tool calling, agent loops) - Experience working with **LLM APIs** (OpenAI, Anthropic, AWS Bedrock, or similar) - Security grounding for agentic/external integrations (secrets management, OAuth/API keys, rate-limit etiquette, defensive parsing, prompt-injection awareness) - Product mindset and ability to operate with ambiguity - **US Citizenship required** - **Nice-to-haves** (examples): - Production experience with agent fr
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