Top Senior Software Engineer Jobs

Design, develop, test, integrate, operate, and maintain secure cloud-based software solutions in a containerized microservices environment. The role involves architecture reviews, troubleshooting, performance and reliability improvements, system administration, and collaboration with customers and cross-agency teams. Required technologies include Java, Python, Docker, Kubernetes, Linux, databases, Ansible, Terraform, and related cloud tooling. The position requires five years of software engineering experience, an active TS/SCI clearance with polygraph, Security+ or higher, and an approved technical certification.

Develop, integrate, test, and sustain cloud software and AI/ML capabilities for national security missions. Responsibilities include AWS architecture, Java-based distributed systems, RESTful services, containerized microservices, Kubernetes, infrastructure as code, CI/CD, Linux scripting, big-data technologies, analytics, LLMs, RAG, and agentic workflows. The role also involves requirements analysis, technical documentation, software integration, testing, issue resolution, and designing solutions using distributed computation and cloud-scale data technologies.

Develops and enhances advanced software systems while leading release management, CI/CD automation, configuration management, version control, and build processes. Designs repeatable software builds, manages hardware/software integration environments, maintains configuration documentation and artifact repositories, and collaborates with technical stakeholders. Requires extensive software engineering experience, expertise in Java, C, C++, UNIX/Linux environments, and an active TS/SCI clearance with polygraph.

Develop and enhance a prototype RF spectrum planning and monitoring system for DoD clients. Build full-stack features using React, FastAPI, and TypeScript/Node.js; create REST APIs and Dockerized services; write testable code; design databases; document architecture and integrations; collaborate with engineers, domain experts, program leadership, and stakeholders; and contribute to reviews and testing.

Develop and maintain full-stack cloud software supporting Peraton’s Cyber Mission business. Responsibilities include requirements analysis, software development, installation, evaluation, enhancement, maintenance, and troubleshooting. The role uses Agile and DevOps practices and technologies including Java, JavaScript, React or Vue, AWS, Docker, Kubernetes, CI/CD pipelines, NoSQL databases, Elasticsearch, Redis, and Atlassian tools. Work is performed at a contractor facility with potential telework based on tasking and customer approval.

Design, develop, integrate, test, troubleshoot, and sustain cloud-based software solutions supporting mission-critical national security services. Build and maintain microservices and containerized applications, contribute to architecture and design reviews, optimize performance and reliability, resolve system issues, and collaborate on technical approaches, timelines, and project scope.

Develop and integrate cloud software supporting cyber intelligence and AI/ML capabilities on AWS and large-scale compute clusters. Responsibilities include requirements analysis, Java development, RESTful services, distributed systems, cloud deployment, DevOps, container orchestration, testing, integration, Linux scripting, and troubleshooting. The role also involves big-data technologies, Hadoop ecosystems, LLMs, RAG, analytics, and secure software engineering for national security missions.

Designs, develops, modernizes, integrates, tests, and deploys front-end and full-stack software for RF SIGINT collection, processing, visualization, and mission systems. Builds real-time dashboards and interfaces, integrates back-end services and signal-processing pipelines, optimizes distributed systems, supports multiple operating environments, and maintains technical documentation. Provides technical leadership, mentors development teams, supports deployed-system validation, and ensures secure, high-reliability software meets mission performance and accreditation requirements.

Develop, test, debug, document, integrate, and sustain mission-critical software systems for a Department of Energy program. The role focuses on DDS-based real-time distributed systems, including RTI Connext DDS, architecture analysis, legacy-system modernization, migration to new platforms, and translating existing functionality into target architectures. The engineer will collaborate with systems and hardware teams, ensure software standards, support Windows and Linux applications, and contribute to testing, installation, CI/CD, and agile development.

Develop and maintain highly usable user interfaces for data tracking and metrics solutions. Collaborate with customers, analysts, systems engineers, developers, and product designers to define requirements, conduct research, create design specifications, and perform usability testing. Support full software lifecycle activities, including analysis, design, implementation, integration, testing, deployment, Agile ceremonies, and Jira management. Apply UI, UX, accessibility, and software engineering best practices within a national security program.

Design, develop, test, maintain, and troubleshoot software applications and system integrations. Analyze requirements, optimize database interactions and algorithms, support testing, and maintain technical documentation. Collaborate with systems and hardware engineers, coordinate Agile/Scrum development activities, uphold coding standards, and improve development processes. The role requires an active TS/SCI clearance with a current polygraph and extensive software engineering experience.

Develop, test, maintain, and modernize cloud-enabled software applications supporting FAA and National Airspace System programs. Translate requirements into maintainable code, conduct design and code reviews, create automated tests, troubleshoot defects, and integrate applications into CI/CD and DevSecOps pipelines. Collaborate with systems engineers, cybersecurity professionals, architects, and stakeholders while supporting compliance, verification, documentation, performance, and scalability objectives.

Design, develop, integrate, test, deploy, monitor, and maintain cloud-based software for distributed, multi-threaded mission systems in Linux environments. Build scalable microservices, CI/CD pipelines, and automated deployments; integrate COTS and GOTS solutions; participate in Agile development; troubleshoot production applications; create technical documentation; mentor junior engineers; and support rotating Tier III on-call and mission surge requirements.

Develop and maintain mission-critical Java web applications supporting Intelligence Community data workflows. Responsibilities include backend and frontend development with Java, Quarkus, and PrimeFaces; requirements analysis; testing; troubleshooting; integration; deployment; documentation; code reviews; and Agile collaboration with engineers and mission stakeholders. The role requires extensive software engineering experience, Java expertise, cloud certification, and a TS/SCI clearance with polygraph.

Develop and maintain scalable React front-end applications using Redux and TypeScript. Responsibilities include translating UI/UX designs into accessible responsive interfaces, integrating RESTful APIs, testing, debugging, performance optimization, CI/CD support, version control, and production support. The role collaborates with designers and backend developers across the software development lifecycle and supports mission-critical Department of State modernization applications.

Develop and maintain Java applications for large-scale distributed computing environments supporting the Intelligence Community. Responsibilities include full lifecycle software development, system integration, testing, deployment, CI/CD, Infrastructure as Code, containerized microservices, production monitoring, troubleshooting, performance optimization, and Tier III on-call support. The role also involves code and architecture reviews, stakeholder collaboration, and mentoring junior developers.

Design, develop, test, and maintain cloud-based applications supporting national security missions. Responsibilities include full software lifecycle participation, requirements analysis, integration, testing, troubleshooting, system enhancements, CI/CD automation, and resolving distributed-system issues. The role operates in an Agile DevOps environment using AWS, Kubernetes, Docker, Java, JavaScript, and related cloud technologies. The position is onsite in Annapolis Junction with telework flexibility subject to tasking and approval.

Develop and maintain mission-critical Java web applications for Intelligence Community data workflows. Responsibilities include backend and frontend development with Quarkus and PrimeFaces, requirements analysis, testing, troubleshooting, integration, deployment, documentation, code reviews, and collaboration within an Agile team. The role requires an active TS/SCI clearance with polygraph and one approved technical certification.

Develop, deploy, secure, monitor, maintain, and troubleshoot a cloud-based microservices platform supporting national security missions. Collaborate on software design, development, testing, architecture reviews, technical planning, production support, and system sustainment. The role requires expertise in cloud technologies, Kubernetes, Linux, Python, infrastructure automation, databases, AWS resource management, and software development lifecycle practices.

Leads software systems engineering for SATCOM mission planning supporting military NC3 networks. Responsibilities include requirements, architecture, API and backend development, user interface implementation, integration, testing, deployment, code reviews, security, performance improvements, mentoring, and Agile DevSecOps delivery. The role requires onsite work in Colorado Springs, active U.S. Secret clearance, U.S. Person status, and up to 10% travel.

Develop, customize, and integrate Guidewire PolicyCenter, BillingCenter, ClaimCenter, and Guidewire Cloud solutions. Responsibilities include Gosu development, data model configuration, system integrations, cloud upgrades, SQL-based troubleshooting, and analytical problem-solving within the property and casualty insurance domain.

Design and optimize high-performance CUDA kernels and GPU workloads for AI, HPC, and data-processing applications. Profile GPU code, tune memory and execution efficiency, develop ML primitives and custom operators, optimize distributed multi-GPU training, and contribute to compiler-level improvements. Collaborate with ML and engineering teams, create benchmarks and regression tests, evaluate new GPU architectures, document tuning practices, and mentor engineers.

Developers and partners integrate with Walmart Marketplace APIs. Responsibilities include troubleshooting integrations, providing architectural guidance, building diagnostics and monitoring tools, optimizing API usage, contributing to SDKs and documentation, and collaborating with engineering, product, and business teams to improve platform capabilities and developer experience.

Lead the design, development, testing, and delivery of scalable backend software and distributed systems. Translate business requirements into technical designs, write secure and maintainable code, troubleshoot performance issues, support high availability, and collaborate with cross-functional stakeholders. The role emphasizes software architecture, continuous integration and delivery, testing, defect resolution, telemetry, and operational improvement for Walmart’s eCommerce and supply chain platforms.

Design, code, test, debug, and document complex software projects and enterprise technology solutions. Lead companywide engineering initiatives, develop technical standards and best practices, resolve complex technical issues, and collaborate with technical experts and external groups. Mentor associates, guide projects, and support strategic technology objectives while applying software development, database, integration, testing, deployment, monitoring, and security expertise.