Top Software Engineer Jobs in Washington DC,

Lead end-to-end development of secure, scalable web applications and data solutions supporting clinical trial operations. Design frontend and backend components using C#/.NET, Angular, AWS, and relational or non-relational databases. Guide architecture, testing, deployment, CI/CD, security, cloud optimization, and regulatory compliance. Mentor developers, oversee technical delivery, troubleshoot complex issues, and lead migration and modernization of on-premises applications to AWS.

Leads the design, development, configuration, integration, modernization, and production support of Nasdaq Calypso solutions across capital markets functions. Translates business requirements into technical designs, oversees testing and deployments, optimizes performance and resiliency, manages incidents, and ensures compliance with security, regulatory, architecture, and risk standards. Mentors technical teams, coordinates lifecycle initiatives, and partners with business stakeholders, vendors, infrastructure, cybersecurity, and enterprise architecture teams.

Own product features from research and UX design through full-stack production delivery. Design user flows, wireframes, and reusable components while building responsive front-end experiences, APIs, back-end logic, and database solutions. Improve hiring marketplace workflows, dashboards, scheduling, messaging, and integrations. Use user feedback, analytics, funnel metrics, and A/B testing to guide iteration while ensuring performance, accessibility, and security.

Build and maintain full-stack systems for a global monitoring application supporting federal partners and satellite data access. Responsibilities include designing scalable backend services and frontend applications, improving architecture and infrastructure, integrating complex customer requirements, and owning mission-system quality and availability. The role requires collaboration across teams throughout the engineering lifecycle and experience with cloud infrastructure, observability, geospatial data, and complex integrations.

Build and maintain full-stack application features using Laravel, PHP, relational databases, RESTful APIs, and modern frontend technologies. Responsibilities include schema design, query optimization, testing, code review, refactoring, AI-enabled feature integration, and collaboration with product, design, engineering, and external Laravel partners. The role is fully remote within the U.S. and supports a data platform serving oncology and hematology teams.

Leads and mentors an engineering team, overseeing technical decisions, architecture, delivery, quality, testing, CI/CD, support escalations, and continuous improvement. Partners with product, design, customer success, and engineering leadership to deliver roadmap commitments. Manages prioritization, KPIs, delivery health, hiring, onboarding, performance reviews, and career development in a fast-growing SaaS environment.

Designs, configures, develops, and deploys scalable Salesforce solutions across Sales, Service, and Certinia clouds. Translates business requirements into delivery tasks, coordinates with stakeholders and external partners, supports integrations, testing, releases, troubleshooting, documentation, and platform governance. Identifies risks, dependencies, and gaps while ensuring solutions meet architecture, security, integration, and operational standards.

Build and optimize the core of a distributed compute engine in Rust for SQL and AI query processing. Responsibilities include designing and delivering engine capabilities, improving query performance, writing maintainable code, and solving complex systems and concurrency problems. The role requires expertise in data structures, algorithms, performance optimization, systems programming, hardware fundamentals, asynchronous programming, atomics, locks, and cache design.

Develops, tests, maintains, debugs, and modernizes IBM Assembler Language Code applications on z/OS mainframes. Responsibilities include modifying legacy code, conducting trial runs, documenting program logic, resolving issues with analysts and IT staff, interfacing with front-end systems, supporting migrations to Java or MongoDB, and complying with federal security standards.

Design, build, and maintain high-quality Android applications using Kotlin/Java. Collaborate with product, design, backend, and QA teams to implement features, fix bugs, optimize performance, and ensure code quality through testing, code reviews, and CI/CD workflows.