Top Software Engineer Jobs in Washington DC,

Design, build, and operate full‑stack features and platforms for Horizon. Work across frontend, backend, infrastructure, data, and developer tooling; formulate solutions, ship production code, improve reliability and developer productivity, and expand AI/agent-assisted workflows. Collaborate with product, customers, and cross-functional teams, review code (including agent-generated), and improve internal tooling, observability, and deployment workflows.

The Principal Software Engineer will architect and oversee the development of distributed systems, mentor engineers, and drive architectural initiatives for large platforms.

The Associate Staff Engineer will leverage their technical knowledge to address client challenges and guide teammates towards enhanced solutions, focusing on continual improvement and innovation.

Senior full‑stack engineer responsible for designing, building, testing, and supporting scalable backend services and user-facing UIs for a healthcare data platform. Works across Agile teams on data ingestion/transformation, APIs, cloud infrastructure, containers, and CI/CD. Leads major initiatives, mentors team members, participates in on-call rotation, and ensures HIPAA/compliance and engineering best practices.

Deploy and test Sycurio solutions, perform 3rd-line support, build and validate customer deployments, update as-built documentation, troubleshoot integrations, prototype new features, and train support engineers.

Build and architect insurance and data infrastructure for eligibility, verification, and claims. Lead partner implementations to get employers, health plans, and channels live. Make technical decisions at the 0-to-1 stage, write clear documentation, maintain production systems, and use AI tools to scale impact on a fully remote team.

Senior software engineer role to maintain and modernize CMS Hospital Quality Reporting systems using FHIR standards. Design and deliver medium-to-large features, automate CI/CD and testing, ensure compliance and data quality, integrate FHIR-based APIs and healthcare data formats, and reduce technical debt while collaborating with cross-functional teams and stakeholders.

Freelance WordPress Developer to maintain, improve, and expand a healthcare website. Responsibilities include fixing bugs, updating core/themes/plugins, building custom pages and integrations, developing/maintaining REST APIs, implementing security best practices, ensuring HIPAA-aware handling of sensitive data, configuring forms/booking/CRM integrations, and documenting technical changes.

Lead design and implementation of structured content models, metadata, and authoring frameworks for the Authentic Work Platform. Collaborate with engineers, designers, and product teams to enable reusable content, decoupled rendering, and consistent print/digital experiences. Provide technical leadership on content APIs, prototype solutions, and integrate content across workflows. Drive long-term content architecture, migrations, governance, and tooling to improve editorial efficiency and scalable delivery.

Design, build, and maintain shared backend platform services (C#/.NET, Node/TypeScript, Postgres/Redis, AWS). Improve reliability, performance, observability, and CI/CD for high-throughput, transaction-heavy workflows. Collaborate with product, payments, data, and infra teams, drive architecture and rollout, mentor engineers, and adopt AI-assisted development practices.