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Senior Software Engineer - CTJ - Poly

United States, Virginia, Reston💼 Full-time🗓 2026-07-20 → 2026-09-26

Core

Design, implement, test, and maintain cloud-scale services and platform components for security-critical, highly regulated government environments.

Role type

Senior Software Engineer (Security & Cloud Infrastructure)

Builds

Cloud-scale services, platform components, and integrated security solutions for US federal, state, and local government agencies.

Domain

Cybersecurity, Cloud Infrastructure, Government Contracting

Deliverable

production ML models | product features | infrastructure

Required skills

Cloud computing fundamentals, distributed systems design, DevOps systems (CI/CD, source control), security operations (threat modeling, vulnerability management), debugging and systems thinking, large-scale service reliability, architecture leadership, stakeholder alignment

Preferred skills

Experience with C, C++, C#, Java, JavaScript, or Python, 24x7 on-call practices, incident response, defense-in-depth principles

Technologies

C, C++, C#, Java, JavaScript, Python, Cloud environments, Virtual machines, Networking, Identity management

Responsibilities

Lead design and implementation of cloud-scale services in regulated environments, mentor engineers through design guidance and code reviews, lead investigations and resolution of complex live-site issues, apply secure-by-design principles throughout the development lifecycle, drive clarity in ambiguous problem spaces balancing customer needs and compliance, participate in maturing on-call practices and incident response processes

Seniority

Senior, hands-on IC with leadership responsibilities

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