Software Engineer - Senior in Chantilly

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Job DescriptionJob 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

Overview:

Osprey Talent Solutions is supporting a mission-focused 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 )
• 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

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 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

If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.