Software Engineer - Senior

Job Description

Location: Chantilly, VA

Clearance: Active TS/SCI required. Agency polygraph will be sponsored.

Salary Range: $135,000 – $155,000 DOE + Comprehensive Benefits Package

*MUST be a US Citizen

Overview:

Osprey Talent Solutions is supporting a mission-focused national security partner seeking a Senior Software Engineer with strong GraphQL expertise to design and implement secure, scalable applications within a multi-enclave enterprise environment.

This role supports advanced data-driven and investigative systems operating across classified domains. The selected candidate will contribute to architecture, API design, backend services, and frontend integration while ensuring performance, security, and long-term maintainability.

Key Responsibilities:

Design and implement GraphQL APIs supporting enterprise mission systems

Develop backend services using Python and related technologies

Integrate GraphQL services with React-based frontend applications (React Relay preferred)

Contribute to system architecture decisions for distributed applications

Ensure secure API design, versioning, and integration best practices

Optimize application performance, scalability, and reliability

Integrate applications with databases, search platforms, and messaging systems

Participate in Agile planning and release activities

Collaborate across engineering, infrastructure, and security teams

Required Qualifications:

Bachelors degree in Computer Science, Software Engineering, or related field

Eight or more years of experience in software engineering

Active TS/SCI clearance

Strong experience designing and implementing GraphQL APIs

Experience integrating GraphQL with React or React Relay

Proficiency in Python

Experience building and integrating RESTful services

Experience with relational databases and SQL

Hands-on experience with containerization technologies (Docker, Kubernetes)

Strong understanding of secure coding practices and DevSecOps principles

Preferred Experience:

Experience with Elasticsearch or similar search/indexing platforms

Experience integrating messaging systems such as Kafka, RabbitMQ, or Redis

Experience working within cloud environments supporting national security missions

Experience working in classified, multi-enclave environments

Work Environment:

On-site in Chantilly, VA

U.S. citizenship required. Must be eligible to complete agency-specific polygraph requirements