Top Senior Software Engineer Jobs

Lead an agile engineering team to design, build, and operate secure, scalable software. Provide technical direction, write and review production code, champion enterprise AI-assisted development practices, drive SDLC improvements, and manage cloud-native deployments and monitoring across AWS and data platforms.

Lead backend engineer responsible for designing, building, and operating scalable, secure microservices for equities broker-dealer and prime finance platforms. Integrate AI/ML and GenAI (LLMs, RAG, embeddings, vector DBs) into production, drive architecture decisions, ensure SDLC and operational stability, mentor teams on responsible AI use, and collaborate with product and operations to deliver high-volume, low-latency financial systems.

Develop and deploy cloud and edge software for command-and-control and autonomous systems. Integrate heterogeneous sensors and effectors, build real-time state estimation and AI/LLM-driven decision systems, and engineer scalable, reliable solutions for high-stakes operational and tactical missions.

Design, implement, and optimize cloud and edge software for mission-critical autonomous systems. Process heterogeneous sensor data for real-time state estimation and threat detection, integrate sensors and effectors, build LLM/AI-driven decision systems, and engineer scalable, reliable, fail-safe solutions for tactical and operational missions while collaborating with multidisciplinary teams.

Design, implement, and deploy cloud and edge software to command and control autonomous systems. Integrate heterogeneous sensors and effectors, develop real-time state estimation and threat-detection algorithms, build LLM/AI-driven decision systems, and collaborate with multidisciplinary teams to deliver scalable, reliable mission-critical autonomy solutions.

Lead cross-team data platform initiatives focused on the Data Lake. Drive architecture and roadmaps for lakehouse storage, compute, orchestration, modeled data layers, and operational automation. Own large, complex programs end-to-end, make high-judgment architectural decisions, establish standards and paved paths, respond to incidents, and mentor senior engineers while aligning stakeholders across engineering, product, analytics, and AI/ML.

The Senior Software Engineer will develop a financial ecosystem, managing complex projects and building APIs for high-scale systems while collaborating across teams.

Design, build, and operate distributed, real-time advertising and fan-engagement systems across the full stack. Lead architecture, implement end-to-end features, improve scalability, reliability, testing and release strategies, and mentor engineering teams. Integrate APIs, databases, messaging/streaming, real-time model inference, and on-site hardware while supporting production deployments and operational excellence.

Design and build scalable backend systems, APIs, dashboards, and safeguards for safe, reliable, high-volume API deployments. Partner with Safety Research and Integrity teams to mitigate emerging risks, while balancing developer experience, latency, reliability, and risk. Own projects from technical design through launch and iteration, and contribute to engineering standards. The role requires production backend, infrastructure, platform, or product engineering experience and strong distributed-systems fundamentals.

Design, develop, implement, integrate, and test real-time communications software, primarily in C++. Define software architectures, protocols, and state machines; collaborate with multidisciplinary teams; support laboratory and field experiments; optimize algorithms and performance; and prepare technical documentation. The role supports large-scale communications demonstrations and advanced laser communication systems for national security and space defense applications.

Design, develop, test, debug, and maintain production-quality software applications and cloud services. Make technical trade-offs involving scalability, reliability, performance, and security; build RESTful APIs; support customer issues; and work in continuous integration and deployment environments. Collaborate with architecture, product, and development teams, contribute to technical research and documentation, review designs and code, lead complex initiatives, and mentor junior developers.

Designs, builds, and maintains enterprise data APIs using .NET; architects scalable API and database solutions; integrates MongoDB, PostgreSQL, MySQL, OpenSearch, and Kafka; documents APIs with OpenAPI; supports API catalog and developer portal initiatives; advances AI-assisted development; troubleshoots production systems with Grafana; remediates vulnerabilities using SAST, DAST, and OWASP practices; and coordinates requirements, estimates, and delivery planning across teams.

Design, develop, test, troubleshoot, and implement complex Java software capabilities for computer-based systems. Build enterprise APIs, RESTful services, and microservices while collaborating in an agile environment. Use AI coding agents for feature development, refactoring, testing, and codebase navigation. Maintain code quality, security, performance, and architectural alignment while working independently and with engineering teams.

Design, develop, and implement complex Java software capabilities for computer-based systems. Build enterprise APIs, RESTful services, and microservices while applying object-oriented design and agile practices. Integrate AI coding agents for feature development, refactoring, testing, and codebase management. Troubleshoot issues, test software, review agent-generated code, and collaborate with engineers in a fast-paced environment. Work onsite at Fort Meade and Columbia, Maryland, at least one day weekly, with potential for increased onsite work.

Design, develop, test, and maintain modern C++ mission-critical software for fire control, flight, ground, and command-and-control systems. Work on Linux-based embedded and edge platforms, hardware and sensor interfaces, distributed networks, and secure system architectures. Troubleshoot issues across software, hardware, networking, and deployment environments while collaborating with multidisciplinary engineering teams. Support field testing, customer demonstrations, system integration, and travel of up to 20%.

Own a product area end to end, making independent architecture, scope, and engineering investment decisions. Collaborate with leadership on product direction, improve the engineering team through reviews and design discussions, and work across backend, web, mobile, and infrastructure layers. The role requires strong judgment, autonomy, communication with non-engineers, and a history of owning outcomes in production software.

Develop spacecraft simulation software across the full software lifecycle. Responsibilities include establishing requirements, modeling spacecraft components and space environments, integrating and validating simulations, developing simulation frameworks and graphical interfaces, supporting real-time operations and mission analysis, performing trade studies, and preparing technical documentation. The role is fully onsite in Dulles, Virginia, requires an active TS/SCI clearance, and may be filled at Principal or Senior Principal level.

Develop and maintain brokerage platform software across the full lifecycle, including design, coding, implementation, testing, documentation, deployment, debugging, and user requirements gathering. Work may involve Java Swing front-end trading platforms or Core Java back-end data and transport layers requiring multithreading and high throughput. Candidates should understand complex systems, propose solutions, and collaborate effectively with users and the development team.

Design, develop, implement, test, and support high-quality internal software and customer-facing products. Enhance existing products and design APIs that integrate systems. Ensure security measures and perform code testing and reviews.

Design and build the control plane for Postgres clusters, ensure data protection, automate database operations, and collaborate with customers to enhance the platform.

The Software Engineer will develop web applications using Elixir and Phoenix, mentor other engineers, and improve code quality and platform engagement.

As a Senior Advanced Software Engineer, you will lead the development and quality assurance of slot game software, mentor junior engineers, and ensure compliance with standards.

Develop, modify, and maintain full-stack applications on Windows; design databases, write Java code, perform test automation, work in Agile teams, and participate across the software development lifecycle while communicating with stakeholders.

The job requires a Software Engineer with a minimum of 5 years experience in C# and WPF development, along with knowledge of BLE and XAMARIN.

This role requires a Bachelor's degree in Computer Science and over 5 years of software industry experience focusing on technical support, C++, SQL, databases, and Linux.