Top Senior Software Engineer Jobs in Washington, DC

As a Senior Software Engineer, you'll develop customer-facing features, ensuring user experiences are intuitive and polished, while collaborating closely with product and design teams.

Designs, integrates, deploys, and troubleshoots autonomy and vehicle-intelligence systems across embedded hardware and software platforms. Responsibilities include integrating sensors, autopilots, datalinks, PNT/GPS/INS, and ground control stations; supporting UAV flight tests; conducting SIL and HIL validation; collaborating with vendors and defense customers; and delivering customer demonstrations. The role requires strong C++ development, robotics integration, networking, embedded Linux, and eligibility for a U.S. security clearance.

Provide technical leadership for Cloudflare’s deployment platform, defining architecture and multi-quarter direction for safe, automated, health-mediated releases at massive scale. Lead RFCs, design reviews, incident retrospectives, technical migrations, and cross-team platform initiatives. Mentor engineers, influence teams without direct authority, develop observability and rollback guardrails, and shape AI integration in a safety-critical deployment system. The role requires autonomy, strong communication, and occasional on-call support.

Serve as the technical anchor for a cross-functional engineering squad building healthcare data platforms. Design and maintain Java Spring Boot, React, and Python data-processing applications; guide architecture, code quality, estimation, releases, integrations, and issue resolution. Build reliable data delivery pipelines, mentor peers, support Agile execution, and promote responsible AI-assisted development using tools such as GitHub Copilot.

Leads development of Python-based mission-planning and scheduling systems for spacecraft operations. Designs optimization algorithms, high-performance APIs, distributed services, and reliable production workflows. Improves scalability, observability, and operational resilience while collaborating across software, flight dynamics, satellite operations, product, and program teams. Provides technical leadership, mentors engineers, and applies automation and AI-assisted development practices.

Design, deploy, operate, and scale GPU/CPU infrastructure for Starshield’s national security missions. Manage Kubernetes and AI clusters, bare-metal and virtualized GPU platforms, operating systems, databases, monitoring, and distributed storage. Develop infrastructure automation, improve service reliability and performance, collaborate with AI engineers and customers, and lead technical excellence while mentoring junior engineers.

Lead the architecture and development of secure, scalable microservices and software components. Build CI/CD automation, automated testing strategies, and performance monitoring solutions. Provide technical leadership in privacy, security, cryptography, and distributed systems while collaborating across teams and communicating complex technical concepts. Drive continuous improvement and integrate Web3 and privacy-preserving technologies into innovative products.

Build responsive Web3 applications, web SDKs, developer tools, reusable frontend components, and internal Customer Success tools. Collaborate with Product, Design, and Engineering to create scalable, accessible user experiences. Contribute to code and design reviews, automated testing, continuous delivery, coding standards, and AI-assisted development practices.

Develop full-stack, user-facing software for distributed autonomous maritime systems. Build real-time data platforms, visualization tools, command-and-control interfaces, external integrations, and cloud-to-embedded system features. Own major engineering projects, make technical architecture decisions, collaborate across hardware and autonomy teams, gather user feedback, mentor engineers, and support software operating in controlled or classified environments.

As a Senior Software Engineer on Substrate, you will design and build managed Kubernetes product offerings, ensuring scale, security, and stability across various environments, while emphasizing automation and operational excellence.

In this role, you will drive infrastructure strategy, build APIs for network infrastructure, and improve Kubernetes networking and observability systems.

Design, implement, and optimize cloud and edge software for mission-critical autonomous systems. Process heterogeneous sensor data for real-time state estimation and threat detection, integrate sensors and effectors, build LLM/AI-driven decision systems, and engineer scalable, reliable, fail-safe solutions for tactical and operational missions while collaborating with multidisciplinary teams.

The Senior Full-Stack Software Engineer will design and develop software products, collaborate with data scientists, and instill development best practices.

Build and maintain scalable full-stack web applications using .NET, React, Next.js, and Azure. Responsibilities include feature delivery, API and microservices development, testing, code reviews, architecture, performance optimization, security, CI/CD support, cloud deployment, and production support. Senior engineers will mentor teammates and influence engineering standards, while early-career engineers receive mentorship and progressively greater ownership.

Design and operate secure, multi-account AWS infrastructure and EKS environments using Terraform. Manage shared developer services, CI/CD pipelines, observability, container platforms, and self-service automation. Support MLOps workloads and agentic AI workflows while collaborating with product teams. Ensure infrastructure and software supply chains meet CMMC Level 2, ATO, NIST, and FIPS requirements.

Design, build, and maintain systems-level Rust software for an AI-powered autonomous drone platform. Integrate AI/ML pipelines, develop networking and protocol components, support autonomy features, and create reliable software for resource-constrained, low-latency environments. Develop and test through simulation while collaborating with ML engineers and contributing across application and systems layers.

As a Software Engineer in Frontier AI Infrastructure, you'll design secure systems for the public sector, improve engineering standards, and collaborate with cross-functional teams to meet government requirements. You'll also participate in customer engagements and contribute to the product strategy while ensuring compliance with federal regulations.

Leads hands-on development of full-stack applications using .NET, React, Next.js, and Azure. Owns architecture, coding, code reviews, testing, security, reliability, observability, production support, and cloud deployment. Integrates AI and GenAI capabilities such as LLM features, RAG, semantic search, and agentic workflows. Mentors engineers, establishes technical standards, collaborates with stakeholders, supports hiring, and helps deliver scalable, secure software.

Design, develop, test, deploy, maintain, and enhance software solutions. Manage priorities and deliverables, participate in design reviews, perform code reviews, triage and debug issues, contribute documentation, and collaborate in cross-functional agile teams to build scalable web applications.

As a Forward Deployed Software Engineer, partner with high-impact public sector customers by developing full-stack applications and providing technical guidance throughout the project lifecycle.

The role involves building AI applications for government, architecting deployments, collaborating with research, and ensuring effective customer integration.

Maintain and improve multi-cloud Kubernetes infrastructure, CI/CD (Argo Workflows/ArgoCD), observability, and networking. Build reliable continuous deployment tooling and onboarding flows, provide internal support, collaborate across Platform Engineering, contribute upstream (open-source/operators), and participate in a 24/7 on-call rotation to resolve deployment infrastructure issues.

The role involves building and managing GCP infrastructure, automating platform tasks, and ensuring efficient deployments and security for the engineering teams.

As a Software Engineer for the ARC team, you'll design and implement secure backend systems, manage model inference layers, improve engineering standards, and collaborate with teams to meet government agency needs.

Design, develop, test, and maintain front-end and back-end components for an enterprise Postgres/Java/React system. Integrate APIs, implement CI/CD and containerized deployments, participate in full SDLC activities, code reviews, architecture sessions, and ensure accessibility and security compliance while collaborating with cross-functional agile teams.