Top Software Engineer Jobs in Washington DC,

As a Senior Software Engineer, you will design and implement a high-performance Solana validator client in Zig, translate Rust code, optimize performance, and collaborate with a team.

Support development and testing of software applications, troubleshoot issues with the development team, maintain documentation, attend team meetings, and help optimize application performance and user experience.

Remote, unpaid back-end web development internship focused on building and maintaining WordPress sites and web applications. Responsibilities include API integration, server and database management, collaborating with React front-end developers, debugging, and producing technical documentation. Mentorship and hands-on learning provided; part-time (10–30 hrs/week) for approximately 180 days.

Assist in developing and maintaining cross-platform Flutter apps for Android and iOS, implement UI/UX with Flutter widgets, integrate Firebase and REST APIs, debug and optimize performance, and collaborate with the team while staying current with Flutter/Dart technologies.

Work on real-world web applications across frontend and backend. Use modern frontend frameworks (React/Angular/Vue) and backend tech (Node.js, Python, Java, PHP). Integrate RESTful APIs with databases (MongoDB, PostgreSQL, MySQL), debug, test, optimize performance, and collaborate with designers and product teams while gaining hands-on mentorship.

Design and build robust backend services and secure APIs for finance and reader applications. Implement authentication, payments, subscriptions, and finance workflows. Design Postgres/Redis schemas, integrate with financial APIs (BSE Star MF, NSE) and DRM services, and ensure compliance-friendly data handling.

Lead architecture and technical strategy across an infrastructure platform ecosystem. Drive hands-on architectural improvements to graph engine and backend services, reduce technical debt, establish standards, champion AI-first engineering practices, run architecture/code reviews and mentorship, and collaborate with product and leadership to ensure scalable, extensible systems.

Embed with client teams to design, build, and ship production full-stack fintech features and integrations (payments, banking, financial data). Develop AI-powered functionality (LLM-driven workflows, agentic features), translate user insights into product improvements, provide onboarding/documentation, and act as a technical partner to maintain delivered solutions.

The Senior Backend Engineer will lead client projects, build AI solutions, and develop technical standards while mentoring junior engineers.

Build and maintain core backend services and frontend interfaces for a music metadata and royalties platform. Own features end-to-end, collaborate with founders and designers, optimize for performance, security, and scalability, and integrate modern AI and infra tools.

The Senior Google Engineer oversees complex projects involving Google Workspace administration and AI Gemini deployment. This role requires expertise in configuring Google Workspace services, managing user accounts, implementing security policies, and deploying AI solutions for enterprise clients.

Design, build, and optimize high-throughput, highly available backend services in Golang for 24/7 sports and prediction-market applications. Lead architecture decisions, implement features, diagnose and resolve high-concurrency bottlenecks, and provide high-tier operational support for real-time transactional systems.

Manage a team of Solutions Architects to drive customer adoption and deliver technical solutions for Solo's API and Service Mesh products, ensuring effective onboarding and resolving complex technical issues.