Top Software Engineer Jobs in Washington DC,

Build and own user-facing features and core platform architecture across frontend, backend, and ML pipelines. Integrate AI workflows (LLMs, embeddings) for curriculum generation and automated evaluation. Manage end-to-end development: requirements, design, implementation, CI/CD, testing, observability, and iteration while collaborating with product, design, ML, and customer teams.

Support building and redesigning responsive, mobile-friendly websites; create wireframes and sitemaps; develop front-end UIs and assist with back-end tasks; optimize for performance, scalability, and SEO; participate in brainstorming, debugging, testing, and follow clean coding and version-control best practices under developer mentorship.

Supports development of Microsoft Power Platform solutions, including Power Apps applications, Power Automate workflows, Power BI dashboards, and SharePoint integrations. Collaborates with stakeholders to automate business processes, manage and validate data, test and deploy solutions, document functionality, and provide customer support. Works with Microsoft 365, Dataverse, Excel, SQL databases, and Agile project teams.

Application Engineer responsible for installing, upgrading, configuring, supporting, and maintaining compliance applications in UNIX, Java, Oracle, and AIX environments. The role includes troubleshooting, root cause analysis, vendor and business coordination, SLA-driven issue resolution, Jira and incident-ticket management, requirements analysis, SDLC project support, vulnerability remediation, and SME support for L1 teams.

Configure Manhattan Active Warehouse Management, develop REST and event-driven integrations, create data mappings and cloud-native extensions, and support API testing, SIT, UAT, and production troubleshooting. The role integrates MAWM with ERP, OMS, and material handling systems while collaborating with architects and functional teams in an Agile offshore engineering environment.

Own and accelerate ELSA’s B2B Dashboard during a three-month contract. Build production-ready full-stack features across Go, Python, and Vue.js; shape product requirements; make UI/UX decisions; improve APIs and user experiences; use AI development tools; and collaborate with product, design, business, and engineering stakeholders to deliver high-impact improvements autonomously.

Seeking an expert senior software engineer with 10+ years of experience at top U.S. technology firms to improve foundational AI model capabilities on complex software engineering tasks. The role requires approximately 20 hours per week for a 2–3 week contract. Candidates must complete a 30-minute AI interview and a paid asynchronous software engineering exercise and project-instructions quiz. Compensation varies by geography and experience.

Full Stack Engineer responsible for building responsive frontends (JS/TS, React preferred) and backend services (Python, Go, or Node.js/TypeScript), designing RESTful APIs, managing databases (Postgres/MongoDB), and deploying on cloud (AWS). Collaborate with teams, optimize performance, and apply DevOps practices (Docker, Kubernetes, CI/CD). Requires strong problem-solving, communication, and 3+ years of experience.

Develops, tests, troubleshoots, documents, and maintains PeopleSoft customizations. Responsibilities include resolving defects and configuration issues, advising on technical solutions, collaborating with functional analysts, migrating projects through development and test environments, and preparing production migration requests. The role requires expertise in PeopleSoft modules, development tools, integrations, reporting, security configuration, databases, web servers, upgrades, and selective adoption processes.

Lead development and reliability of real-time and batch payment-processing systems across authorization, clearing, settlement, disputes, and card-network integrations. Build scalable, secure, low-latency services using Java, Python, Kotlin, and AWS; improve network peering infrastructure, failover, and capacity. Own initiatives from planning through launch, participate in on-call rotations, reduce technical debt, and drive cross-functional engineering improvements and strategic planning.