Top Senior Software Engineer Jobs in Washington, DC

Develop and ship native iOS software for Ford’s customer-facing mobile app, serving millions of drivers worldwide. Responsibilities include contributing to product architecture and design reviews, evaluating technologies, writing documentation, collaborating with product and design teams, and delivering production-grade software using agile and CI/CD practices. The role emphasizes Swift, SwiftUI, mobile architecture, testing, observability, debugging, and operational support.

Build and maintain backend services and metadata pipelines supporting data discovery, governance, and AI/ML workflows. Responsibilities include integrating relational databases, developing Java, Node.js, and Python services, optimizing distributed pipelines, implementing Terraform infrastructure, supporting GitLab CI/CD, and writing comprehensive tests. The role also involves troubleshooting scalability and reliability issues, designing asynchronous workflows, and collaborating on modern data lake, search, metadata, and LLM-enabled technologies.

Design, implement, and operate production backend services for routing, dispatch, and shipment tracking. Model operational processes through APIs, data structures, and event-driven services in Go. Integrate optimization engines into dependable workflows, handle distributed-system failures and connectivity constraints, and collaborate with users and domain experts to develop scalable solutions from ambiguous requirements.

Develop, integrate, test, and maintain full-stack software from requirements through production. Responsibilities include building backend services, RESTful APIs, data integrations, and user-facing applications; participating in technical design, troubleshooting, code reviews, and software quality improvements; and collaborating with engineers, architects, product owners, and mission stakeholders in an Agile environment.

Develop, integrate, test, and maintain full-stack software from requirements through production. Build backend services, APIs, data integrations, and user-facing web applications using modern frameworks, cloud technologies, and relational databases. Participate in technical design, troubleshooting, code reviews, Agile development, and software quality improvements. Collaborate with engineers, architects, product owners, and mission stakeholders while supporting maintainable, secure, and reliable solutions.

Develop responsive web applications and modernize legacy systems while combining frontend engineering with UI/UX design. Create wireframes, user flows, prototypes, and design standards; conduct user research; present designs; and incorporate stakeholder feedback. Collaborate with product, design, and engineering teams, support RESTful APIs and database design, and implement user stories in Agile/Scrum environments. The role requires occasional classified-facility visits and work with government, DoD, or Intelligence Community systems.

Develops and implements full-stack software solutions from concept through production using agile methods. Designs, modifies, and enhances applications; writes front-end and back-end code; solves complex technical and workflow problems; evaluates architecture and operating environments; collaborates with cross-functional teams; and identifies system improvements. The role requires DHS suitability and participation in a government investigation and skills assessment.

Own the navigation and positioning stack for head-worn and body-worn systems. Develop inertial, GNSS, calibration, sensor-fusion, and attitude-estimation solutions; integrate sensors across hardware and embedded software; and build testing, validation, and data-replay infrastructure. Collaborate with perception, firmware, mechanical, and manufacturing teams to deliver robust production navigation in challenging environments. Validate performance through laboratory and field testing against ground truth.

The Full Stack Software Engineer develops user-facing features using React and Node, manages data workflows, and collaborates with design and product teams. Responsibilities include shipping product slices and enhancing performance for state government data platforms.

Lead the design, development, deployment, and operation of complex production software for Yext’s Competitive Intelligence products. Provide technical leadership, mentor engineers, guide architecture and technical planning, lead incident response, collaborate across teams, participate in recruiting, and promote high engineering standards. Build customer-facing experiences involving data, AI, visualizations, user interfaces, and agentic workflows while responsibly using and evaluating AI-assisted development tools.

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.

Build and maintain metadata capture, transformation, and delivery pipelines for a data management platform. Develop backend services with Python, Java, and Node.js; integrate relational databases and REST APIs; implement Terraform infrastructure; and support GitLab CI/CD. Optimize distributed systems for performance, reliability, scalability, and secure asynchronous processing. Write automated tests, troubleshoot services using operational metrics, and contribute to AI/ML metadata pipelines, search, data lake, and LLM-powered initiatives.

Design, develop, deploy, and maintain scalable customer-facing software, APIs, workflows, and data-driven services. Define technical requirements, create implementation plans, automate and test releases, review code and architecture, and drive technical decisions. The role includes mentoring engineers, identifying technical gaps, maintaining engineering excellence, and serving as a product-domain expert while collaborating with product managers, data scientists, team leads, and managers.

Develop and maintain full-stack enterprise applications using Java, React, and PostgreSQL. Responsibilities include designing front-end and back-end components, integrating APIs, testing, code reviews, architecture participation, CI/CD, deployments, and application maintenance. The engineer will collaborate with product, business analysis, and testing teams in an agile environment while supporting accessibility and security compliance for an FBI system.

The Principal Engineer will lead technical initiatives in AI-driven tax software, mentor engineers, enforce technical standards, and contribute to architectural design and product innovation.

Designs, develops, tests, deploys, and supports scalable enterprise applications using .NET, C#, and MongoDB. Responsibilities include database modeling and optimization, API and microservices integration, architectural decisions, automated testing, CI/CD, production troubleshooting, technical debt reduction, and mentoring junior engineers. The role collaborates with product and engineering teams in an Agile environment to deliver healthcare practice management capabilities.

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.

Design, develop, and maintain automated testing frameworks and scripts for FEMA enterprise grants systems. Perform functional, regression, performance, API, integration, accessibility, and security testing. Integrate automated pipelines with DevSecOps environments, manage test data, analyze defects, define quality metrics, and collaborate with developers, analysts, and product owners in Agile teams. Mentor junior testers and promote quality-focused engineering practices.

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.

Designs and delivers cloud-based software solutions with strategic customers and Microsoft product teams. Leads requirements definition, architecture, dependency identification, design documentation, and development of maintainable code. Mentors engineers, contributes to open-source assets, coordinates project and release plans, and serves as a designated responsible individual for system reliability, monitoring, on-call support, performance, and operational improvements.

Design, build, test, and operate secure, scalable production software and services. Partner with customers and stakeholders to translate needs into technical solutions, lead technical workstreams, and apply engineering best practices including automated testing, CI/CD, observability, and documentation. Develop reusable components and AI- or LLM-based solutions while driving end-to-end delivery and continuous improvement.

Develop and deploy autonomy software for unmanned surface, underwater, and aerial vehicles in maritime missions. Responsibilities include motion planning, localization and tracking, safety assurance, COLREGS adherence, multi-agent coordination, distributed optimization, rigorous software testing, platform integration, deployment support, mission-log analysis, and autonomy R&D. The role also involves cross-functional collaboration, customer and demonstration support, roadmap development, and mentoring junior engineers. Travel is typically approximately 25% annually.

Develops, tests, maintains, and modernizes secure ACWS software components, APIs, integrations, and services. Implements user stories, resolves defects, performs unit testing, supports sprint and release activities, analyzes production issues, and coordinates durable technical solutions. Collaborates with architects, analysts, testers, DevSecOps teams, and stakeholders while supporting refactoring, legacy modernization, documentation, and technical debt reduction.