Top Software Engineer Jobs in Washington DC,

Provides technical leadership for enterprise-scale software supporting healthcare revenue cycle operations. Designs scalable applications, APIs, microservices, integrations, cloud-native solutions, and healthcare interoperability workflows using HL7, FHIR, and EDI/X12. Leads architecture, automation, security, performance, code reviews, troubleshooting, modernization, and technical strategy while collaborating with product, operations, analytics, infrastructure, and engineering teams.

Maintain and enhance mid-office technology, agent systems, scripts, applications, and automated quality-control systems. Gather requirements, translate them into technical specifications, write and deploy code, test and debug solutions, monitor system performance, provide support, document processes, and coordinate projects across departments and supplier partners. The role also recommends automation and process improvements, participates in code reviews, manages stakeholder communication, and supports operational efficiency within corporate travel systems.

Build and evolve OpenRouter’s public REST API, TypeScript and Python SDKs, Agent SDK, CLI, documentation, examples, and starter repositories. Own developer-facing product surfaces, improve API ergonomics and agent compatibility, and collaborate with DevRel, Product, and Platform teams to expand the developer ecosystem. The role requires strong API and SDK design judgment, autonomy, written communication, and experience shipping widely used developer products.

Designs and develops scalable customer-facing web applications and microservices APIs. Responsibilities include complex system architecture, code reviews, mentoring, technical design, stakeholder collaboration, database optimization, system maintenance, compliance support, and promoting engineering best practices. The role requires Java and enterprise web development experience, with exposure to cloud technologies, front-end frameworks, Docker, REST APIs, event-driven architecture, and CI/CD.

Design and build Temporal Cloud’s multi-cloud infrastructure platform across AWS, GCP, and Azure. Own platform architecture, declarative infrastructure modeling, Kubernetes reconciliation, deployment control planes, reliability, recovery, and safe production rollouts. Lead system design, roadmap development, incident response, technical reviews, coaching, hiring, and cross-team collaboration while continuing to write production code in Go or another systems language.

Build and support complex features across C#/.NET back-end services and React front ends. Responsibilities include technical design, API and data modeling, secure and tested coding, production troubleshooting, code reviews, mentoring, documentation, and improving engineering practices. Collaborate with Product, QA, DevOps, Technical Leads, and architecture teams while balancing delivery, maintainability, performance, accessibility, observability, and security.

Build and own a greenfield mobile application for iOS and Android, including architecture, features, security, accessibility, testing, telemetry, and App Store and Play Store releases. Use AI coding agents throughout development, establish CI/CD and rollout processes, solve secure fintech problems, and collaborate with Product, Design, and backend engineers. Mentor teammates and drive high-quality, reliable customer experiences.

Leads SAP manufacturing and production planning technology strategy, process design, configuration, integration, reporting, and release planning. Manages IT analysts and subject matter experts, oversees software engineering delivery, allocates resources, manages vendors, and drives continuous improvement through KPIs and stakeholder reporting. Requires expertise in manufacturing planning, ERP platforms, project management, and enterprise integration. Travel may reach 40% during the transformation.

Partner with clients to design, develop, modernize, and support production full-stack applications using .NET/C#. Lead feature delivery from discovery through deployment, contribute to architecture and DevOps practices, improve engineering quality (TDD, CI/CD, IaC), and mentor client teams to leave them better equipped to maintain and evolve software.

Designs, develops, tests, and maintains scalable software applications, backend services, RESTful APIs, and distributed systems. Builds real-time and time-series data solutions using Go, Python, JavaScript, TypeScript, PostgreSQL, and TimescaleDB. Collaborates with product, design, QA, and DevOps teams in an Agile environment; performs code reviews, debugging, optimization, documentation, and production support. Uses cloud, containerization, CI/CD, and AI-assisted development tools to improve software quality and productivity.