Top Remote Senior Level Software Engineer Jobs in Washington DC,

Design, develop, and maintain scalable SaaS platform features using C#, PostgreSQL, React/TypeScript, and AWS. Lead architectural decisions, ensure code quality through testing and reviews, troubleshoot production issues, mentor engineers, collaborate with cross-functional teams, and participate in on-call incident response to maintain reliability and performance.

Join as an early founding full-stack engineer to architect, build, and deploy a scalable platform serving AI-driven voice applications. You will own frontend and backend development, design infrastructure with the CTO, and deliver reliable production systems for enterprise customers.

Lead design and delivery of agentic-first capabilities in Nexus Repository Manager: architect multi-agent subsystems, own product area execution, define verification and eval harnesses, ensure security/reliability for software supply chain features, and mentor senior engineers while coordinating cross-functional stakeholders.

Manage an overseas Agile sprint team, bridge business and engineering with clear technical requirements, contribute as a senior engineer (architecture, code, reviews), develop cloud-hosted and on‑prem and front-end applications, and perform people, project, and software development management.

Lead development and maintenance of Customer.io SDKs across platforms, improve SDK delivery infrastructure (CI, testing, release), partner with product/design, use AI agents to make multi-file code changes, and engage with developer customers to improve experience.

Design, develop, customize and maintain enterprise Sitecore solutions (versions 9/10, SXA, JSS, XM Cloud). Produce technical specs, implement components, test and debug in test and production, support teammates, perform demos to customers, and escalate/resolve issues.

Lead the long-term technical vision and architecture for ServiceTitan's iOS platform. Design scalable mobile frameworks, define data access patterns via GraphQL, champion TCA, adopt Apple platform capabilities, integrate AI-assisted developer tools, drive cross-org alignment, mentor senior engineers, and set engineering standards for code quality, performance, testing, and extensibility.

Lead end-to-end design, development, testing, deployment and production support of enterprise web applications. Own architecture, mentor teammates, translate business requirements into secure technical designs, resolve production issues, and ensure on-time delivery and cross-team communication.

Full‑stack staff engineer to ship web products end-to-end, iterate on and expand a suite of sales/CRM-focused tools, define engineering culture and best practices, and hire/mentor future engineers. Must move fast in a small team, engage with users, and solve new problems creatively.

Build and maintain the AI-powered learning platform across a TypeScript/React frontend and Python/FastAPI backend. Integrate LLMs for classification, extraction, personalization, and conversation practice. Design scalable APIs, develop real-time interactive features, apply AI-assisted development workflows, write well-tested code, and collaborate with product, design, and education teams to optimize learning experiences and A/B tests.