Top Senior Software Engineer Jobs

Develop and optimize ServiceNow Catalog solutions, including catalog items, workflows, scripts, integrations, security configurations, testing, releases, troubleshooting, and production support. Translate stakeholder requirements into self-service solutions, document and train users, mentor junior engineers, conduct root-cause analysis, and evaluate new ServiceNow capabilities.

Design, develop, and maintain complex safety-critical software for nuclear energy applications. Responsibilities include software architecture, coding, code reviews, system integration, mentoring engineers, testing, debugging, performance optimization, regulatory compliance, and technical documentation. The role requires collaboration with hardware and control systems teams and may involve disconnected or containerized applications, physical security integrations, and production AI/ML features.

Design, develop, and maintain high-performance networking software using C/C++ and Python. Work across L2-L7 protocols, Linux systems, virtualized environments, and network virtualization technologies. Debug complex distributed-system issues, analyze crash files, configure and test VM-based networking, and collaborate with architecture, QA, and DevOps teams. Participate in design reviews, documentation, and mentoring while delivering scalable, reliable, production-quality software.

Develop and enhance network hardware and software profiling tools using C/C++ and Python. Collaborate with customers, architects, hardware and software engineers, and operations teams to define requirements, design solutions, and deliver tools for optimizing complex GPU, CPU, and networking systems across HPC, cloud, AI, embedded, and automotive environments.

Design, build, deploy, and operate scalable cloud-native microservices and APIs (Java/Spring Boot) on AWS/GCP and Kubernetes. Build event-driven systems with Kafka, ensure reliability via TDD, CI/CD, monitoring, and performance testing, and collaborate with cross-functional teams to deliver production services at global scale.

Designs, develops, tests, integrates, and upgrades software for SM-6 missile defense systems and Aegis platforms. Responsibilities include guidance, navigation, control, targeting algorithms, flight simulations, sensor processing, architecture, requirements, code reviews, flight-test analysis, technical reviews, sprint oversight, backlog management, and long-term software roadmaps. The role supports missile defense capability delivery to the U.S. Navy Fleet.

Support the IBCS System Team by developing and sustaining Agile development environments and continuous delivery pipelines for mission-critical command-and-control software. Collaborate with software, systems, DevOps, networking, cybersecurity, and infrastructure teams to improve delivery workflows, resolve integration issues, coordinate cross-team work, and drive continuous improvement. Apply DevOps practices, manage roadblocks, communicate technical impacts, and balance hands-on engineering with facilitation and coordination.

Develop Java-based software and mathematical algorithms for the C2BMC missile defense program. Create design artifacts, participate in code and design reviews, conduct software testing, resolve defects, and support Agile planning and execution. Collaborate with systems engineering, integration and test, deployment, and warfighter support teams. Work onsite in Huntsville, Alabama, with a current active Secret clearance required to start.

Develop and modernize full-stack mission management and workflow automation systems, with emphasis on backend API development. Build features from customer requirements, support automation teams through code reviews and enabling functions, and migrate systems to Kubernetes infrastructure. Maintain and upgrade applications, implement security enhancements, and collaborate with developers, analysts, subject matter experts, and mission customers.

Develop and support embedded and application-level software for high-performance thermal control systems. Responsibilities include full lifecycle development, control algorithm integration, proof-of-concept studies, maintenance of existing products, application and driver deployment on Linux and Windows, and user interface programming. The role collaborates with multidisciplinary engineering teams and may involve Docker, industrial communication protocols, and high-reliability coding practices.

Design and build scalable software systems, backend APIs, platforms, integrations, and services. Collaborate with cross-functional teams, translate business needs into technical solutions, prototype and iterate rapidly, and make architecture decisions. Write tested code, participate in reviews, mentor teammates, communicate with stakeholders, and own delivery from start to finish while supporting client-focused consulting engagements.

Develop and support software applications for Intelligence Community missions. Responsibilities include guiding the full software development lifecycle, leading Angular development, designing application systems and interfaces, analyzing requirements, producing technical models and reports, conducting quality assurance, and mentoring developers. The role requires Java, Angular, web services, DevOps, CI/CD, test automation, Git, Jenkins, Linux, database connectivity, and Agile experience. Preferred skills include AWS, microservices, distributed data architectures, Terraform, Puppet, REST, SOAP, and ETL.

Develop, modernize, test, debug, and sustain mission-critical desktop analytical applications for the U.S. Navy. The role uses C++ and object-oriented, multithreaded, concurrent, and asynchronous programming techniques. Responsibilities include architecture and design contributions, legacy-system modernization, code reviews, technical documentation, software integration, deployment, and production troubleshooting within Agile Scrum and SAFe teams.

Designs and maintains full-stack software supporting patient-facing, clinical, and customer support applications. Owns backend data processing, RESTful APIs, integrations, storage architectures, and React web functionality while collaborating on Flutter mobile applications. Responsibilities include improving security controls, troubleshooting production systems, leading technical reviews, maintaining regulated development documentation, mentoring engineers, and partnering with product, clinical, quality, regulatory, and support teams.

Design, develop, maintain, debug, and troubleshoot complex full-stack applications. Contribute to architecture, design patterns, code reviews, Agile ceremonies, and software quality practices. Collaborate with product managers, QA engineers, and stakeholders to deliver scalable solutions on schedule. Stay current with technologies, secure coding, and performance optimization, while mentoring junior developers. The role requires full-stack programming, cloud deployment, relational and NoSQL databases, version control, and active Secret clearance.

Design, develop, and maintain scalable full-stack applications; contribute to architecture, design patterns, code reviews, debugging, and performance optimization. Collaborate with product managers, QA engineers, and stakeholders in Agile development processes. Apply software engineering best practices, stay current with technology trends, and mentor junior developers. The role requires experience with programming languages, front-end and back-end frameworks, cloud platforms, databases, version control, and secure coding.

Develop and maintain Python-based microservices integrated with Apache Kafka and Elasticsearch. Build CI/CD pipelines, deploy and monitor services in Kubernetes, write comprehensive tests, troubleshoot production issues, and contribute to architecture, code reviews, documentation, and secure, observable distributed systems. The role supports a DoD/DIA mission in an on-site Bethesda environment with occasional remote work and requires an active TS/SCI clearance with the ability to obtain a CI polygraph.

Designs, develops, and maintains complex full-stack applications; contributes to architecture, design patterns, code reviews, debugging, and performance improvements. Collaborates with product managers, QA engineers, and stakeholders in Agile delivery processes. Maintains coding standards, stays current with technology trends, and mentors junior developers while delivering scalable, high-quality software solutions.

Develop, integrate, and support mission-critical ground software for spacecraft testing, command and telemetry, mission operations, and real-time communications. Build distributed systems, data pipelines, APIs, and operational tooling; contribute to architecture, requirements, verification, testing, CI/CD, deployment, documentation, and operational readiness. Collaborate with flight software, avionics, AI&T, systems engineering, and mission operations teams. Support on-call rotations and critical real-time mission events.

Staff Software Engineers design, develop, test, and improve high-scale programmatic advertising systems handling hundreds of billions of daily transactions. The role may focus on backend, frontend, or full-stack product engineering across application platform, channels, and exchange products. Responsibilities include leading cross-team technical projects, collaborating with product and engineering teams, solving complex low-latency systems problems, estimating work in agile environments, and improving coding standards and practices.

Owns end-to-end development of features for an enterprise public budgeting platform while modernizing a legacy monolith toward AWS. Responsibilities include requirements clarification, design, implementation, testing, code review, production support, and technical documentation. The role develops with C#, VB.NET, .NET Framework, SQL Server, ASP.NET, Telerik UI, and jQuery; mentors junior developers; collaborates with product and design teams; and uses AI coding assistants responsibly.

Develop and maintain Dynamics 365 CRM and Microsoft Power Platform solutions for a federal application. Responsibilities include CRM configuration, plugin and custom application development, Power Apps and Power Automate workflows, cloud migration, API integrations, SQL Server development, production support, requirements gathering, and Agile delivery. The role also leads technical solutions, collaborates with stakeholders, and supports modernization of enterprise applications.

Build and maintain full-stack Identity Governance software for federal customers. Architect scalable backend services, frontend interfaces, cloud and on-premises infrastructure, CI/CD, observability, and secure deployments across classified and air-gapped environments. Ensure audit readiness, security compliance, reliability, and least-privilege access. Partner with Product and Design, address technical debt, make organization-wide architectural decisions, and mentor engineers while applying AI throughout the software development lifecycle.

Develop and support secure, scalable backend applications using C# and .NET. Lead feature development and medium-to-large initiatives, troubleshoot complex technical issues, contribute to architecture, maintain technical documentation, and improve system performance and reliability. Collaborate with QA, Product, and DevOps teams, conduct code reviews, and mentor junior and mid-level engineers while supporting existing applications and evaluating new technologies.

Builds, tests, packages, and maintains containerized software for test and evaluation programs. Responsibilities include developing CI/CD pipelines, debugging Docker containers, writing integration and regression tests, preparing code releases, managing dependencies and reproducible builds, validating leaderboard results, enforcing coding standards, integrating subcontractor contributions, and maintaining technical documentation. The role also supports technical demonstrations and reviews and may involve government research programs, software radio, AI/ML inference, formal methods, and security hardening.