Top Remote Senior Level Software Engineer Jobs in Washington DC,

Lead development and improvement of a production iOS app used by tens of thousands. Own architecture, UI, networking, local persistence, and automated tests. Collaborate with Android and backend teams, diagnose async and device-specific issues, use Xcode Instruments, CI, and crash/analytics tooling, and drive product-minded technical decisions.

Lead a full-stack engineering team, balancing hands-on coding and technical leadership. Partner with Product to align priorities, drive quality practices, hire and coach engineers, improve engineering processes, contribute to the codebase, and ensure scalable, testable, and user-focused product delivery.

Lead technical direction for patient-facing mobile and web products, rapidly prototype and ship features with product/design/clinical teams, mentor engineers, set architecture and development standards, and use AI tools to improve patient engagement, retention, and outcomes.

Lead software design, architecture, and delivery for a government program: own end-to-end build, integrate optimization/analytics, manage unclassified-to-secure transfer, coordinate PM/SMEs/data scientists, lead a small engineering team, and ensure deployments with CI/CD and security practices. Customer-facing role requiring hands-on coding and program accountability.

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.