Top Remote Senior Level Software Engineer Jobs in Washington DC,

Design, build, and maintain payment integrations and a reconciliation data platform for high-volume restaurant transactions. Implement terminal-to-cloud flows, ingestion pipelines, matching engines, reporting UIs, and payment analytics. Provide technical leadership, documentation, and mentor teammates to ensure reliable settlement and reconciliation.

Lead software design, architecture, and delivery for a defense-focused program: gather requirements, drive technical vision, coordinate cross-functional teams, implement front-end data-visualization features, integrate analytics/optimization, and manage unclassified-to-secure deployment and CI/CD to deliver working, government-deployable software.

Manage day-to-day telecom operations and a team supporting enterprise voice, unified communications, and contact center platforms. Oversee implementations, upgrades, vendor/carrier relationships, telecom expense management, incident resolution, reporting, and cost optimization to ensure reliable, secure, and scalable telecom services across stores, contact centers, and corporate locations.

Design, implement, test, deploy, and operate core protocol features and Rust-based consensus clients. Own full lifecycle delivery, build conformance and adversarial tests, execute safe protocol upgrades, resolve availability/performance issues, and collaborate cross-functionally while maintaining high standards for correctness and security.

The Senior Front-End Engineer will develop and maintain the UI application using React and TypeScript, ensure code quality, debug issues, and collaborate with design teams.

Founding iOS Engineer to build the app's core intelligence layer. Must implement production CallKit and on-device continuous Speech Framework recognition, integrate with SwiftUI/CoreData, and optionally add Dynamic Island Live Activity via WidgetKit. Equity-only founding role; product details under NDA.

Design, architect, test, and demonstrate Windchill and ThingWorx solutions for DoD customers. Translate business requirements into technical/process solutions, support integrations, perform testing and debugging, develop documentation, provide end-user training, and collaborate with cross-functional teams and PTC support to deliver PLM/ThingWorx implementations.

Analyze, design, program, test, implement and support application software and system interfaces (notably Epic and lab integrations). Lead projects, train and supervise staff, develop specifications and documentation, evaluate vendor products, coordinate installations, and maintain system improvements and quality assurance.

Design, build, and maintain scalable full-stack web applications. Implement backend APIs and responsive frontends, deploy to cloud, ensure security/performance, write tests, debug issues, participate in reviews, and mentor junior developers.

Own and build a new advisor mobile app end-to-end (native shell, hybrid/web views, and Rails APIs). Ship weekly, implement release and monitoring pipelines, extend Rails APIs, and establish mobile patterns, on-call, and production ownership for a fast-moving startup.