Top Remote Senior Level Software Engineer Jobs in Washington DC,

Own and deliver reliable, secure software in a regulated healthcare environment. Drive solutions from ambiguity to production, build automation to reduce developer toil, mentor engineers, champion AI-assisted coding, and optimize database performance and schemas.

Senior full‑stack engineer focused on .NET and UI/UX modernization for cleared federal systems. Design and build C#/.NET enterprise apps, integrate with MS SQL/Oracle, conduct user research, create wireframes/prototypes, improve workflows and usability, and collaborate across engineering, QA, and operations within secure environments.

Lead and develop the Payments Engineering team, ensuring the delivery of reliable, secure payment systems while collaborating cross-functionally and managing projects.

Lead design and implementation of user interfaces for applications, collaborating with UX designers and developers to create responsive, scalable architectures and establishing best practices.

As a Senior Implementation Engineer, you'll own technical projects, enhance the Java codebase, automate processes, integrate systems, and collaborate with customers on infrastructure design.

Build and operate full-stack, production-ready systems: design and ship AI-native mortgage automation, integrate third-party lending APIs, and architect scalable AWS infrastructure and job processing. Mentor engineers and ensure security, observability, and high reliability.

Lead individual contributor on the KDE Query team to design, scale, and optimize a high-performance distributed query layer. Improve query speed, throughput, and latency, collaborate with product, support, and sales, and solve high-visibility, data-intensive engineering problems for large-scale network telemetry.

The Salesforce Developer designs and maintains Salesforce solutions to enhance business processes, integrates applications, ensures data integrity, and stays updated on best practices.

Design, implement, and maintain scalable microservices and cloud-based systems in Python/Go; build data pipelines and online services; collaborate on security, reliability, and automation; own projects end-to-end and support testing and troubleshooting.

Lead architecture and development of a scalable React Native mobile banking app. Design solutions, guide teams on React Native and native mobile tech, ensure security, performance, CI/CD, and integration with backend APIs and cloud services. Mentor developers and collaborate with product, QA, and UX in an Agile environment.