Top Software Engineer Jobs in Washington DC,

Design, build, and maintain backend services in TypeScript for millions of users; develop full‑stack features with React/React Native; participate in code reviews; provide technical leadership, mentorship, and architecture guidance; collaborate with PM and design; use monitoring/metrics and Agile practices to deliver scalable, user-focused products.

Lead design and delivery of scalable, secure backend platform services. Build services in C# or TypeScript, work with SQL/NoSQL databases (PostgreSQL preferred), maintain CI/CD and IaC, optimize performance and reliability, apply security best practices, mentor engineers, collaborate cross-functionally, and shape long-term platform architecture and engineering standards.

Lead cloud-native architecture for enterprise SaaS: design, develop, and deploy scalable microservices, APIs, frontend apps, CI/CD pipelines, and integrations; drive security-by-design, performance engineering, cost optimization, incident triage, documentation, and mentor engineering teams while aligning architecture to product goals.

Develop, maintain, and scale user-focused web and mobile applications. Write clean HTML/CSS/JavaScript, integrate back-end services and databases, collaborate with designers, document solutions, apply security and best practices, and stay current with web technologies.

Lead ServiceNow platform architecture and governance, define standards and CI/CD pipelines, design secure integrations with ERP/HR/security/data-protection systems, guide development partners, and drive automation using Flow Designer, IntegrationHub, and Orchestration across ITSM/ITOM/SecOps modules.

Design, build, and maintain scalable web applications for payroll and accounting. Collaborate with engineers and product partners, write tested code, participate in code reviews, contribute to architecture, improve CI/CD and monitoring, support production (including on-call), and communicate progress while continuously learning.

Design, build, and maintain Ruby on Rails APIs and React frontends; architect and optimize PostgreSQL schemas and queries; manage Docker/Kubernetes services and Terraform IaC; implement PKI/mTLS and secure authentication; solve offline data serialization/synchronization; own CI/CD pipelines and support mission-critical field deployments.

Build and improve Rare Candy's iOS app: implement Swift/SwiftUI features, integrate with GraphQL APIs, fix bugs, raise UI polish, collaborate with product/design/backend, and grow quickly under CTO mentorship to own meaningful product areas.

Build and maintain Python backend services and serverless architectures for a restaurant operations platform. Ship end-to-end features, design robust systems, and help define product roadmap. Implement CI/CD and productionization, collaborate with product and GTM teams, and contribute to team culture and technical execution.

As a Senior Solutions Architect, you will design API solutions for strategic merchants, lead technical presentations, and collaborate with internal teams to address fraud and data challenges.