Top Software Engineer Jobs in Washington, DC

Freelance Senior Software Engineer to deliver full‑stack TypeScript/Next.js features for a fintech‑adjacent platform. Build accessible React UIs, transactional workflows, auth-aware data access, and clean service boundaries. Work with PostgreSQL/Prisma or Supabase, integrate CMS, write tests, maintain CI/CD (GitHub Actions → Vercel), and collaborate with product and design.

The role involves developing cross-platform API abstractions for the Unity Editor using modern C++. Responsibilities include maintaining codebases and collaborating with worldwide teams.

The Senior Embedded Software Engineer designs and develops low-level software for ARM-based hardware platforms, focusing on bare-metal development and security controls.

Lead the design and development of Windows desktop applications, focusing on architecture, accessibility, and best practices, ensuring quality and performance across releases.

The Senior Software Engineer will enhance Speechify's product experiences by building and optimizing services and SDKs, collaborating with product teams, and improving system efficiency.

As a Software Engineer, you will design and build backend services for Relativity's generative AI platform, focusing on scalability and reliability in distributed systems.

Lead design and development of backend systems for satellite operations, focusing on automation, performance, and collaboration with aerospace teams. Responsible for algorithm validation and cloud integration.

Lead engineering teams in developing command and control software for mission systems. Manage technical execution, software architecture, and mentor engineers.

As a Senior Software Engineer in Test Automation, you'll design automation frameworks, develop CI/CD pipelines, and ensure the quality of VR training products.

The role involves leading software development for mission-critical applications, focusing on design, development, and maintenance using various technologies in a cloud environment.

The Senior Software Engineer will lead technical efforts for DOT's CMS, focusing on Drupal platform engineering, operations, and security compliance, ensuring high-performance and accessible environments.

As a Staff Wireless Software Engineer, you will develop and architect wireless protocol stacks, optimize performance, and lead design implementations for real-time communication systems, collaborating closely with hardware and firmware teams.

Senior Software Developers lead projects by combining front-end and back-end technologies, guiding teams, and ensuring high-quality digital solutions that meet client needs. They mentor junior engineers and engage with stakeholders to improve processes and promote best practices.

The Senior Software Developer II - Full Stack will design and develop scalable systems, leading projects while mentoring junior staff and engaging with stakeholders. The role emphasizes technical leadership, problem-solving in software development, and innovative processes in cloud and AI technologies.

The role involves design and development of a database application, migrating data, and enhancing search tools using Azure AI Search and MS Power Suite technologies.

Lead the design and development of Windows desktop applications, ensuring performance, accessibility, and collaboration with various teams. Oversee the entire feature lifecycle and address complex issues in a user-centric manner.

The Senior Software Engineer will enhance Speechify's product by developing core services, optimizing functionalities, and collaborating with product teams, primarily using Kotlin for cross-platform SDK.

The Senior Software Engineer will develop and maintain Angular applications, collaborate with teams, implement features, and optimize front-end performance for a federal education program.

As a Senior Software Engineer, you will develop features for AI security capabilities, enhance workflows, and integrate systems while collaborating across teams.

Design, develop, test, secure, integrate, and maintain enterprise applications; support CI/CD pipelines and DevSecOps practices; perform code reviews, troubleshoot production issues, integrate APIs, and collaborate with stakeholders in a classified or sensitive federal IT environment.

Lead design, delivery, and operation of business-critical distributed systems. Build and maintain enterprise-grade, full-stack solutions, drive technical initiatives, mentor teammates, adopt new technologies, and deliver iterative customer-focused releases with emphasis on maintainability, performance, and scalability.

Designs, develops, and implements digital solutions and systems, collaborates with teams, writes code, conducts testing, and ensures software quality and scalability.

Analyze complex system requirements; design software tools and subsystems; manage development using formal specifications; implement, integrate, and test software components; estimate costs and schedules; may supervise programmers; work independently and support web application development with cloud or low-code platforms.

Lead and mentor engineering teams to design, build, and ship scalable, production-grade software. Own major features, drive technical decisions, collaborate with product and design, and ensure reliable distributed systems supporting real-time collaboration, high-scale data ingestion, and ML-powered features.

Design, build, and operate petabyte-scale data infrastructure: real-time ingestion, storage (open table formats), and serving. Lead performance, reliability, and cost optimization across Spark and streaming pipelines (Kafka/Flink), define data contracts, and establish best practices and tooling. Collaborate with platform, product, and deployment teams to deliver production-grade data systems on AWS GovCloud, Kubernetes, and Airflow.