Top Software Engineer Jobs in Washington DC,

Develop software in Go and Python, review code, write design documents, and build reliable shared platforms and services for critical government systems. The role requires independent project ownership, strong engineering practices, and the ability to ramp quickly in complex environments. Work is remote-first but must be performed within the United States or its territories.

Enhance, maintain, troubleshoot, and improve existing public-facing geospatial applications for the USGS National Map. Develop with JavaScript, support AWS-based cloud data workflows using services such as Lambda, S3, and EC2, and improve code efficiency, scalability, testing, and maintainability. Collaborate with technical teams to diagnose problems and implement practical solutions. Preferred experience includes Python, modern front-end and Node.js development, REST APIs, additional cloud platforms, and Esri technologies.

Develop and maintain public-facing applications supporting the USGS National Map. Improve existing JavaScript applications, troubleshoot issues, enhance data presentation, and optimize scalable cloud-based workflows using AWS services. Collaborate with technical teams to design maintainable solutions, automate data processing, test software, and improve application efficiency. The role requires strong software engineering fundamentals, analytical problem-solving, and experience with JavaScript and AWS technologies.

Build and architect Alpaca’s high-performance algorithmic trading platform. Responsibilities include writing backend and frontend code, designing distributed and highly available systems, optimizing low-latency and high-throughput performance, and developing scalable databases, messaging systems, concurrency controls, and service-oriented architectures. The role also involves making critical platform decisions and potentially contributing to order and risk management, trading systems, observability, cloud infrastructure, and financial ledger capabilities.

Leads and mentors software engineering teams while coordinating delivery across Product, Quality Engineering, SRE, Security, Architecture, and Operations. Contributes hands-on to coding, debugging, API design, architecture, and scalable platform services. Drives engineering excellence through operational metrics, incident management, technical debt reduction, continuous improvement, and modern development practices. Manages performance, staffing, resource allocation, stakeholder communication, and delivery across global teams.

Implement and maintain full-stack features for a career-intelligence platform: architect NestJS/Next.js applications, manage PostgreSQL schemas and queries, build responsive UIs with Tailwind, integrate LangChain-powered AI, implement authentication with Clerk, and create end-to-end tests and automation with Puppeteer to ensure launch readiness and performance.

Leads development of scalable backend systems and applications for the Mindbody ecosystem. Responsibilities include designing APIs and microservices, owning complex technical projects, collaborating with Product, Design, and QA, promoting engineering best practices, mentoring engineers, conducting code reviews and interviews, and leading incident postmortems. The role requires strong software architecture experience, large-scale SaaS development, cloud and database expertise, and effective cross-functional leadership.

Develop, test, document, and support software applications and integrations. Perform unit, regression, security, and load testing; remediate application security issues; analyze system impacts; support monitoring and on-call operations; assist with architecture, deployments, estimates, and technical documentation. Build scalable, maintainable solutions and reporting dashboards while collaborating with security teams, teammates, and business partners.

Develop and maintain features for the VetSports Java and React Native mobile application. Write documented code, collaborate with engineers and stakeholders, participate in code reviews, assist with testing and debugging, improve application performance, and gain exposure to DevSecOps workflows using Linux environments and GitLab CI pipelines.

Owns the design, development, testing, deployment, and maintenance of production software. Builds C#/.NET backend services, Angular web applications, and .NET MAUI mobile apps; optimizes SQL Server databases; resolves production issues; improves reliability, security, performance, and observability; writes tests and documentation; participates in code reviews; and translates ambiguous business needs into maintainable technical solutions.