Top Senior Software Engineer Jobs

Develop and maintain scalable back-end systems, APIs, custom tools, and web applications using Python and modern architectural approaches. Collaborate cross-functionally to solve complex problems, identify risks, modernize systems, and support agile software development. The role may involve virtualization, CI/CD pipelines, automated testing, middleware, data integration, and API development. A TS/SCI clearance with polygraph is required.

Lead development of a multimedia review tool supporting petabyte-scale data processing, visualization, analytics integration, ingestion workflows, and deployment across operational environments. Serve as the codebase subject matter expert, lead developers, deliver incremental Agile builds, troubleshoot complex issues, and maintain system consistency across hybrid and classified infrastructures. The role requires Java and front-end development expertise, technical leadership, UI/UX awareness, and an active Top Secret clearance with SCI eligibility.

Develop and maintain multiple applications in an agile environment while meeting stringent laboratory security requirements. The role requires strong Java and Spring expertise, with Angular and MySQL experience preferred. Responsibilities include solving complex IT problems, applying test-driven development, planning and coordinating technical work, and contributing to organizational objectives. The position requires a bachelor's degree with five years of related experience or equivalent, U.S. citizenship, and the ability to obtain and maintain a DOE security clearance.

Develops, integrates, tests, documents, and supports complex software applications and systems. Partners with customers and end users to gather requirements, design solutions, and improve processes. Provides technical leadership, mentorship, training, and user support while applying Agile/Scrum methodologies. Responsibilities include system integration, implementation planning, reporting, documentation, capacity planning, risk management, and coordination with analysts, database administrators, and system administrators.

Develops production-ready software and end-to-end solutions in an agile environment. Responsibilities include analyzing architectures, writing and enhancing application code, gathering client requirements, automating workflows, resolving complex problems, collaborating cross-functionally, and using automated testing tools. The role requires TS/SCI clearance with polygraph and supports government defense and intelligence missions.

Develops end-to-end software solutions in an agile environment, from requirements analysis and architecture through production deployment. Responsibilities include writing and enhancing source code, resolving workflow issues through automation, analyzing operating environments, implementing system improvements, and collaborating with cross-functional teams. The role uses open-source frameworks, APIs, analytics, infrastructure, automated testing, and CI/CD practices to deliver secure government mission solutions.

Develop, integrate, test, debug, and optimize RF signal-processing software from concept through production. Design DSP algorithms and apply Fourier transforms, filtering, modulation, communications theory, and error-control coding. Collaborate with systems engineers, analyze requirements, improve software and system performance, and ensure architectural alignment. The role supports mission-critical government capabilities in Linux environments and requires advanced technical expertise in software development and signal processing.

Develop, maintain, test, and enhance complex software systems in an agile environment. Lead software teams in delivering production-ready solutions using Java, Python, APIs, open-source frameworks, containerization, Kubernetes, and CI/CD tools. Analyze system architectures, contribute to software and hardware tradeoff decisions, perform requirements analysis, and implement system improvements. The role requires TS/SCI clearance with polygraph and supports classified government missions.

Develop and maintain complex full-stack software systems for government missions, from requirements and architecture through production. Review and test software components, contribute to system design and technology trade-offs, identify improvements, and work in agile teams. The role requires Java, cloud, containerization, orchestration, and software development methodology experience, with preferred Python, DevOps, CI/CD, and machine learning knowledge.

Develops end-to-end software and systems from design through production. Responsibilities include building Java and Spring Boot microservices, handling real-time data with WebSockets and Kafka, managing SQL and NoSQL databases, using containers and orchestration platforms, evaluating architecture, improving systems, and collaborating in an agile team supporting critical government missions.

Develops, tests, deploys, and maintains enterprise software for life and annuity exchange platforms. Responsibilities include building C#/.NET applications and REST APIs, integrating AI capabilities, managing AWS infrastructure, developing SQL Server solutions, troubleshooting existing platforms, and collaborating with global stakeholders and clients. The role also contributes to architecture, technical documentation, deployment support, and mentoring junior engineers.

Develop and modernize enterprise software for the NCRC program within a government facility. Responsibilities include architecture enhancement, DevSecOps and CI/CD improvement, application coding, debugging, testing, troubleshooting, systems integration, unit and integration testing, and production support. The engineer will work on an agile scrum team using modern web technologies, databases, scripting languages, and containerization tools while supporting classified government systems.

Develops and supports software for the SSEE Family of Systems, including integrating software branches, refactoring Java and JavaScript code, designing reusable components, troubleshooting systems, and implementing new integrations. The role conducts independent research, coordinates technical integration across teams, and supports full software and systems engineering activities. It requires STEM education or equivalent experience, substantial software engineering experience, Security+ certification, virtualization and scripting knowledge, and eligibility for a Top Secret/SCI clearance.

Develop and maintain full-stack cloud applications for Empower data systems, including frontend interfaces, server-side logic, automated testing, troubleshooting, documentation, and technical support. Translate requirements into software tasks, estimate work, review code, mentor junior engineers and contractors, and contribute across frontend, backend, and system levels using Angular, C#/.NET, AWS, Docker, and microservices.

Design, build, and maintain high-performance, scalable Java backend services and microservices for Walmart's catalog platform. Troubleshoot production issues, perform root-cause analysis, mentor junior engineers, work in agile teams, and contribute to cross-functional projects while leveraging cloud, CI/CD, NoSQL, and generative AI/ML technologies.

Lead design, architecture, and implementation of APIs, front-end interfaces, and backend services for satellite and ground systems. Guide Agile/DevSecOps development, CI/CD, automated testing, and security practices; lead code reviews, mentor team members, and own features through full lifecycle to deployment.

Design, develop, test, and integrate software models for SIL/HWIL emulation of hardware components. Build automated test environments, create verification plans and procedures, debug and resolve issues, and implement emulation policies and tooling to accelerate development and reduce program risk.

Lead end-to-end software design, implementation, and testing for the Rocky space program. Drive architecture strategy, oversee code reviews, manage software lifecycle and configuration, mentor teams, and ensure requirements, risk analyses, and industry standards are met. Role is hands-on and 100% onsite.

Develop and maintain software requirements, architecture, algorithms, interfaces, APIs, backend services, and user interfaces for SATCOM mission-planning systems. Work throughout the Agile and DevSecOps lifecycle, including design, coding, integration, testing, deployment, code reviews, automation, security, and performance improvements. Support CI/CD pipelines, Kubernetes optimization, databases, geospatial visualization, and software for space systems and ground segments.

Develop and maintain scalable backend and frontend applications, APIs, integrations, monitoring and automation tools. Contribute to deployments, CI/CD improvements, code reviews, technical documentation, system enhancements, and cross-team technical support while collaborating with analysts, project managers, and stakeholders.

Develop and lead automation platforms for enterprise storage and backup infrastructure. Build Python-based APIs, backend services, integrations, automation workflows, and reusable frameworks. Design secure, scalable architectures; create automated test suites and release processes; and support CI/CD practices. The role also involves technical leadership, architectural influence, mentoring engineers, requirements refinement, proof-of-concept work, and collaboration with infrastructure, operations, architecture, and business teams.

Develop and maintain Windows applications, services, client and server applications, and RESTful APIs using Microsoft .NET technologies. Troubleshoot existing software, optimize performance, scalability, and security, and collaborate with developers, testers, UI/UX designers, product managers, marketing, and QA teams. Participate in technical design discussions, manage work across multiple workstreams, and use AI tools to accelerate code development.

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 and sustains cloud software through requirements analysis, development, integration, testing, validation, enhancement, and issue resolution. The role includes cloud software research, installation, evaluation, and ongoing engineering support. Candidates need at least five years of directly related experience, cloud development certifications, and an active TS/SCI clearance with polygraph. A technical bachelor’s or master’s degree may substitute for portions of the experience requirement.

Design, code, test, debug, document, deploy, and upgrade software applications. Drive moderately complex technology initiatives, evaluate technical challenges, resolve issues, guide teams, collaborate with stakeholders, and contribute to strategic planning while meeting compliance and risk-management requirements.