Top Software Engineer Jobs in Washington DC,

Lead the iOS engineering team and technical architecture for Aave App. Build secure blockchain functionality including wallets, private keys, transaction signing, RPC interactions, gas estimation, and onchain data flows. Establish standards for Swift and UIKit development, testing, observability, performance, release safety, and incident response. Remain hands-on with foundational architecture and security-sensitive features while mentoring engineers and partnering with product, design, backend, protocol, and security teams.

Build, modernize, deploy, and operate CMG’s marketing platform across current and legacy .NET systems. Develop APIs, integrations, background jobs, and loan-data workflows; troubleshoot issues across application code, SQL Server, vendor APIs, and Azure; and improve testing, CI/CD, deployment safety, and architecture. Work hands-on with coding agents, structured requirements, acceptance validation, and production ownership while migrating legacy applications toward modern services and internal APIs.

Build and optimize developer-facing tools, including IDE integrations, CLIs, code-analysis systems, and CI/CD workflows. Integrate transparent, reliable AI capabilities into developer experiences, optimize high-volume production services, and improve availability, latency, and efficiency. Drive engineering best practices through code reviews, automation, documentation, and technical leadership while mentoring junior engineers. The role also requires communicating complex architectures and operating tooling across enterprise deployment environments.

Analyze Linux system performance, design and implement performance enhancements, productize new servers and hardware, extend performance metrics and visualizations, and build diagnostic tooling. The role requires advanced C programming, Linux kernel expertise, virtualization knowledge, hardware enablement and debugging experience, performance analysis skills, and understanding of computer architecture, concurrency, algorithms, and hardware interconnects.

Lead a multi-team engineering organization responsible for delivery, technical quality, production reliability, security, privacy, and AI-native development practices. Build scalable teams and managers, establish cross-team delivery systems, partner with Product and Design, oversee observability and incident response, use engineering metrics to guide improvements, and shape hiring, leveling, and talent development.

Develop high-quality, scalable, and maintainable software solutions as part of a small engineering team. Coach client teams on modern software development practices, apply test-driven development, and participate in ongoing training and professional development. The role is hybrid, requiring onsite work two to three days per week.

Leads engineering teams responsible for Twilio’s Porting, Hosting, and A2P Messaging products. Owns roadmap delivery, architecture collaboration, reliability, incident response, security, AI-assisted development, stakeholder alignment, and operational tooling. Recruits, develops, and retains a high-performing engineering organization while balancing customer commitments, platform needs, and operational investments.

Develop and maintain scalable backend applications, microservices, APIs, integrations, and production-ready client-facing features. Ensure systems are secure, documented, tested, and performant while collaborating with product, engineering, and business stakeholders. Translate business goals into technical architecture, estimate scope and timelines, and contribute across the technology stack in a remote, cross-disciplinary environment.

Lead and implement full-stack architectural foundations across frontend, backend, and AI interfaces. Define API-first patterns, select standardized libraries and monorepo practices, produce system diagrams and documentation, enforce code quality and testing, and mentor developers to improve performance, security, and maintainability.

Build high-performance, responsive, and accessible frontend applications across e-commerce, B2B, and internal tools using Next.js, React, and TypeScript. Implement design-system components, optimize Core Web Vitals, add animations, support A/B testing, collaborate in a monorepo with backend teams, and design interfaces for AI agents with real-time streaming and error handling.

Design end-to-end technical architecture for an integrated supply-chain e-commerce platform (MES→WMS→OMS→Payments→Invoices). Define modular service architecture, API contracts, tenant isolation (Postgres RLS), deployment IaC (Terraform, Docker, Traefik), observability (Prometheus/Grafana/OpenTelemetry), security (JWT, Vault), and integration of production AI agent frameworks (LangChain/LlamaIndex/AutoGen). Mentor teams and deliver compliant, scalable technical blueprints with target SLOs.

Lead and grow engineering teams building blockchain and Web3 products. Drive technical strategy, architecture, delivery, quality, hiring, mentoring, and engineering processes to ensure reliable product delivery and team scaling.

Design and implement smart contracts and blockchain-based applications, build backend integrations with blockchain networks, participate in architecture and security reviews, improve scalability and reliability, mentor engineers, and collaborate with product and design to ship production-ready Web3 products.

Lead architecture and development of mobile apps for Web3 products. Define mobile standards, integrate wallets and blockchain networks, drive performance and reliability, mentor engineers, own releases and product stability, and collaborate with product, design, and backend teams.