Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.

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Peraton has filed 3 layoff notices in the last twelve months, covering 133 workers, most recently October 2026. These are public filings with state labor departments, and an open role can sit alongside them. See the filings

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About the job

Peraton Overview

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world’s leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can’t be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we’re keeping people around the world safe and secure.

Responsibilities

Senior Full Stack Engineer

Give the agents something real to reach for….

Peraton | Reston, VA

Peraton is seeking a Senior Full Stack Engineer to join our team in Reston, VA.

We're hiring a Full Stack Engineer SME to engineer the next generation of agentic AI platforms— the integrations, connectors, and orchestration plumbing that let our agents reach out to external APIs, enterprise systems, document repositories, and knowledge graphs and actually get something done with what comes back. This is hands-on product engineering on a platform that Peraton mission teams and federal customers use every day.

Why This Role Stands Out

Wire agents to the real world. Every integration you ship expands what our agentic platform can do — new data sources, new tools, new autonomous workflows for analysts and operators.

Work on the leading edge of technology. Python 3.12+, FastAPI, React, Postgres, Docker, and the latest AI models across OpenAI, Anthropic, Google, and more.

Build next-generation agentic tools is the norm. Agentic flows, human-in-the-loop, evals — you'll be practicing this daily with our customers.

Product-centric mindset. FedRAMP, FIPS, IronBank, OPA are in scope, and we ship like a product org.

What You'll Do

Design and build integrations between our agents and external sources — public APIs, licensed feeds, partner systems, customer enterprise systems, document repositories, and structured databases.

Package those integrations as agent-callable tools: clean interfaces, predictable I/O, sound error handling, and documentation the agents (and the humans configuring them) can actually rely on.

Own the production concerns that make external data trustworthy — auth, pagination, rate limiting, retry/backoff, schema mapping, deduplication, caching.

Build and evolve orchestration for multi-step agent workflows, including tool routing, parallel execution, and human-in-the-loop checkpoints.

Contribute across the stack — FastAPI services, React UI for tool configuration and observability, Postgres schemas, containerized deploys.

Instrument what you ship. Traces, metrics, evals, and regression tests for non-deterministic agent behavior.

Partner with platform, security, and mission engineers to move capabilities from prototype to production inside federal compliance boundaries.

Qualifications

What You Bring

Must-Haves

BS degree with 8 years professional experience, Associates degree with 10 years professional experience, an MS degree with 6 years professional experience, or high school diploma/equivalent and 12 years professional experience with meaningful exposure to AI/ML systems or LLM-based products

Hands-on experience building with AI agents — multi-step reasoning, tool use, RAG pipelines, or autonomous task execution — and integrating LLMs into production or near-production applications

Demonstrated experience designing and building integrations to external sources of information — public APIs, licensed data feeds, partner systems, customer enterprise systems, web content, document repositories, or structured databases

Demonstrated experience packaging external capabilities as agent tools or skills with clean interfaces, predictable inputs and outputs, sound error handling, and documentation that AI agents and the humans configuring them can rely on

Strong Python skills (3.12+); comfort with async/await patterns, type hints, and modern Python tooling

Comfort working across the stack: FastAPI/Python backends, React frontends, Docker containerization, and PostgreSQL

Experience building and consuming web APIs (REST, GraphQL, or comparable) and handling the integration concerns that make external data trustworthy in production — authentication, pagination, rate limiting, retry/backoff, schema mapping, deduplication, and caching

Experience with workflow or task orchestration systems (Airflow, Prefect, Celery, or similar distributed execution frameworks) or comparable agent orchestration patterns

Familiarity with agentic frameworks and an understanding of the underlying concepts (chains, tool calling, agent loops) that transfer across tools

Experience working with LLM APIs (OpenAI, Anthropic, AWS Bedrock, or similar)

Solid grounding in the security concerns specific to agentic and external integration work — secrets management, OAuth and API-key handling, rate-limit etiquette, defensive parsing, and prompt-injection awareness

A product mindset: you think about the end user, not just the technical implementation

Comfort operating with some ambiguity in a fast-moving environment

US Citizenship is a requirement for this position

Nice-to-Haves

Production experience with agent frameworks (LangChain, LangGraph, LlamaIndex, CrewAI, AutoGen, OpenAI Agents SDK, Anthropic tool-use, or comparable) and a sound point of view on when each is the right tool

Experience designing and operating retrieval-augmented generation systems — chunking strategies, embedding models, vector stores, hybrid retrieval, reranking, and grounding/citation patterns

Experience integrating with knowledge graphs, document stores, or curated content repositories as agent-accessible sources

Experience evaluating agent and LLM systems — building eval harnesses, golden datasets, regression testing, and observability for non-deterministic systems

Exposure to orchestration patterns: supervisor agents, parallel tool calls, human-in-the-loop flows, DAG-based pipeline execution

Experience building plugin or extension systems: dynamic code loading, container isolation, API mixin patterns

Familiarity with prompt engineering, evaluation frameworks, or agent observability

Familiarity with federal compliance environments: FedRAMP, FIPS 140-2/3, IronBank container hardening, OPA policy enforcement, or Section 508 accessibility

Experience with observability tooling: OpenTelemetry, Jaeger, Prometheus, Grafana, or similar distributed tracing/metrics stacks

Experience with container orchestration (Docker SDK, Kubernetes) and distributed storage (S3, MinIO, JuiceFS)

Prior work building internal tooling, enterprise automation products, or platforms for government customers

Why Peraton

Peraton is a next-generation national security company delivering mission capabilities across defense, intelligence, space, cyber, and federal civilian markets. The work you do here compounds across every Peraton mission that plugs into our agentic platform.

Ready to Build?

If you've been waiting for an agentic role where the integrations, the tools, and the guardrails all matter equally — apply. We want to see what you'd wire up first.

Target Salary Range $112,000 - $179,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual’s experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

Benefits Statement

Peraton offers eligible employees a variety of benefits including medical, dental, vision, life, health savings account, short/long term disability, EAP, parental leave, 401(k), paid time off (PTO) for vacation, and company paid holidays. A full listing of available benefits can be viewed at https://www.careers.peraton.com/benefits.

Application Statements The application period for the job is estimated to be 30 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates. By applying to this job, you are expressing interest in the role and the Company. During the review of your application, you may be required to participate in an on-camera interview, as well as participate in a process to verify your identity. Use of artificial intelligence (AI) tools of any kind during Peraton interviews is strictly prohibited unless the candidate has obtained prior written authorization. All interview responses must be the candidate’s own.

EEO EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.