Top Remote Senior Level Software Engineer Jobs in Washington DC,

Build scalable, high-performance systems for an AI-powered Web3 trading platform. Develop blockchain and AI features, design reliable architectures, solve complex engineering challenges, and collaborate with a global, remote team. Senior candidates expected to have strong technical expertise and autonomy.

Design, build, and maintain scalable, secure backend services in Python. Implement SQL and NoSQL data models, CI/CD pipelines, and containerized deployments. Collaborate with product, front-end, and design teams, perform code reviews, optimize performance, troubleshoot production issues, mentor junior engineers, and improve development processes and infrastructure.

Build end-to-end AI integrations in a cybersecurity platform: gather contextual security data, call and optimize AI services, map responses to actionable UI (React), implement error/fallback handling, monitoring, caching, and user feedback loops while working directly with customers.

Lead and scale engineering teams building Protect, a real-time multi-signal fraud detection platform. Set technical strategy, develop managers and senior engineers, deliver distributed systems and APIs, improve architecture, observability, reliability, and developer productivity while partnering with Product, Research, Security, and exec stakeholders.

Drive customer engagements to architect, deploy, tune, and operate Couchbase-based data platforms. Solve complex technical issues, enable AI-ready architectures, advise stakeholders, collaborate with sales, and author technical collateral.

Build, scale, and operate Elixir/Phoenix services for the treasury platform. Own features end-to-end from product framing to front-end, ensure reliability and observability, and collaborate with founders and a senior cross-functional team.

Own and build frontend experiences across Air's web platform: translate product/design needs into high-quality UI, architect and ship features, improve component design and rendering performance, maintain a scalable design system, enforce accessibility and code quality, mentor engineers, and participate in reviews and hiring.

Lead design and delivery of provider-facing backend services and frontend applications. Own features end-to-end, mentor engineers, build React/TypeScript interfaces, design DRF REST APIs and database schemas, use LLM tooling (Claude) to accelerate development, and operate services on Kubernetes/GCP with Datadog for monitoring.

Design, build, operate, and maintain petabyte-scale Product Metrics systems that store and serve trillions of records. Ensure performance, reliability, availability, and cost-efficiency; deliver features, mentor teammates, participate in on-call rotation, and collaborate across teams to support billing, dashboards, and customer analytics.

Design, develop, and maintain scalable, secure backend services and APIs for a healthcare caregiver platform. Drive cloud-native modernization (microservices, serverless), ensure compliance (HIPAA, OWASP), troubleshoot production issues, optimize performance, mentor junior engineers, and collaborate with product and architecture teams to deliver reliable, high-performing solutions.