Peraton

Senior Full Stack Engineer — Agentic & External Integrations

Peraton
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3 days ago
Reston, VA, USASenior
H1B sponsor

Base Salary

$112k - $179k/yr

Responsibilities

  • Design and build integrations between agents and public APIs, licensed feeds, partner systems, enterprise systems, document repositories, and structured databases.
  • Package integrations as agent-callable tools with clean interfaces, predictable inputs and outputs, error handling, and documentation.
  • Implement authentication, pagination, rate limiting, retry and backoff, schema mapping, deduplication, caching, and other production data reliability concerns.
  • Build orchestration for multi-step agent workflows, including tool routing, parallel execution, and human-in-the-loop checkpoints.
  • Contribute across FastAPI services, React interfaces, PostgreSQL schemas, and containerized deployments.
  • Add traces, metrics, evaluations, and regression tests for nondeterministic agent behavior.
  • Partner with platform, security, and mission engineers to productionize capabilities within federal compliance boundaries.

Requirements

  • A BS with 8 years of professional experience, an associate degree with 10 years, an MS with 6 years, or a high school diploma/equivalent with 12 years and meaningful AI/ML or LLM product exposure.
  • Hands-on experience building AI agents and integrating LLMs into production or near-production applications.
  • Experience designing and building integrations with external information sources and packaging external capabilities as agent tools.
  • Strong Python skills, including Python 3.12+, async/await, type hints, and modern Python tooling.
  • Experience with FastAPI/Python backends, React frontends, Docker, PostgreSQL, and web APIs such as REST or GraphQL.
  • Experience with workflow or task orchestration systems such as Airflow, Prefect, or Celery, or comparable agent orchestration patterns.
  • Experience with LLM APIs such as OpenAI, Anthropic, or AWS Bedrock and familiarity with agentic concepts including chains, tool calling, and agent loops.
  • Understanding of agentic integration security, including secrets management, OAuth, API keys, defensive parsing, rate-limit etiquette, and prompt-injection awareness.
  • U.S. citizenship is required.
  • Preferred qualifications include experience with agent frameworks, RAG systems, knowledge graphs, document stores, evaluation harnesses, plugin systems, observability tooling, Kubernetes, distributed storage, and federal compliance environments.

Benefits

  • Eligible employees may receive medical, dental, vision, life, health savings account, short- and long-term disability, EAP, parental leave, 401(k), paid time off, and company-paid holidays.
  • The application period is estimated at 30 days from the posting date, subject to business needs and candidate availability.
  • The role is based in Reston, Virginia.

Tech Stack

Apache AirflowDockerFastAPIGrafanaGraphQLKubernetesPostgreSQLPrometheusPythonReact
Peraton

About Peraton

10,000+ employees

Peraton builds and integrates mission systems, cyber, space, and intelligence solutions for U.S. defense, intelligence, and civil agencies. It delivers enterprise IT, satellite and terrestrial communications, and spectrum management under government contracts. Founded in 2017, the company is headquartered in Reston, Virginia and is privately held by Veritas Capital.

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