Top Senior Software Engineer Jobs

Develop and maintain secure, data-driven backend systems supporting national security missions. Build applications with Python or JavaScript/TypeScript, APIs and microservices with Flask or FastAPI, and data ingestion and retrieval services. Conduct exploratory data analysis, work with Postgres and Elasticsearch, and implement DevSecOps, CI/CD, cloud infrastructure, containerization, and infrastructure-as-code. The role is fully onsite at Fort Bragg and requires a current Top Secret/SCI clearance, U.S. citizenship, and 5+ years of experience.

Build and maintain full-stack workflow applications and event-driven systems using Java or Node.js, Angular or React, Kafka, and workflow orchestration platforms. Design APIs, distributed services, retries, state management, observability, and long-running processes. Optimize reliability and performance, troubleshoot production issues, lead technical initiatives, collaborate cross-functionally, mentor engineers, and promote strong development practices.

Develop and maintain performant frontend web applications for real-time, mission-critical data. Responsibilities include UI architecture, API integration, responsive design, automated testing, performance optimization, security remediation, code reviews, Agile collaboration, documentation, and frontend reliability improvements.

Leads the end-to-end development of scalable front-end applications using React, JavaScript, and TypeScript, while developing Node.js, Java, and Spring Boot backend services. Responsibilities include UI architecture, performance optimization, API integration, testing, deployment, monitoring, documentation, Agile delivery, and mentoring engineers. The role also involves cloud deployment, CI/CD, DevOps collaboration, observability, and integrating AI/ML APIs.

Develop and maintain real-time and digital missile defense modeling and simulation software. Responsibilities include building simulation infrastructure, integrating component models, developing interfaces, testing, troubleshooting, containerizing deployments, managing code with Git, analyzing simulation results, and collaborating with engineers and technical personnel. The role supports reliable simulation products across development, verification, validation, and delivery lifecycles.

Build and operate scalable Ruby on Rails APIs and React interfaces for data activation. Responsibilities include API design, performance and reliability improvements, automated testing, production troubleshooting, documentation, architecture discussions, incident response, and cross-functional collaboration. The role requires secure, maintainable software development and responsible use of AI-assisted tools, with opportunities to establish API standards and mentor engineers.

Design and implement DSP solutions for intelligence and defense applications. Research advanced DSP and machine learning algorithms for radar, electronic warfare, SIGINT, and RF geo-location. Develop signal-processing neural networks and transition them into real-time, field-ready software. Work end-to-end across signal collection, processing, software implementation, deployment, and operational integration in collaboration with multidisciplinary teams.

Develop and maintain scalable software solutions using Java, Spring Boot, Groovy/Grails, REST APIs, microservices, and AWS. Analyze requirements, design architectures, deploy applications, integrate databases, support cloud migration, and promote secure DevSecOps practices. Lead project delivery across teams, mentor engineers, provide technical direction, and manage multiple priorities and deadlines.

Develop, maintain, troubleshoot, and enhance mission-critical enterprise web applications supporting Intelligence Community customers. Responsibilities include software design, development, testing, deployment, user support, application integration, documentation, and participation in Agile ceremonies. The engineer will work with Ruby on Rails, JavaScript frameworks, AWS, Linux, Git/GitHub, and secure DevSecOps environments while supporting application performance, reliability, and security.

Develop and maintain mission-critical cloud applications supporting national security customers. Build Java-based applications using AWS, Linux, Terraform, Git, Jenkins, microservices, web services, and DevOps practices. Collaborate across organizations, translate requirements into application interfaces, conduct code reviews and automated testing, support Agile teams, integrate applications across platforms, and communicate project status to stakeholders.

Develop and optimize firmware, SDKs, simulators, and P4 compiler components for Cisco Silicon One networking hardware. Design and test C, C++, and P4 programs, optimize programmable packet-processing pipelines, collaborate with ASIC engineers, implement language features, and create Python-based testing frameworks. Troubleshoot complex issues across distributed codebases and support Layer 2 and Layer 3 networking functionality.

Build and deploy cloud-native full-stack web applications, advanced data analysis tools, and AI/ML capabilities for Department of Defense and Intelligence Community customers. Develop solutions using object-oriented languages, MVC frameworks, relational databases, Linux, and web technologies. Collaborate with users and engineering teams in Agile and DevOps environments while learning new technologies quickly. The role requires an active Secret clearance, U.S. citizenship, and onsite work in the DMV area.

Build and deploy cloud-native full-stack web applications, advanced data analysis tools, and AI/ML capabilities for Department of Defense and Intelligence Community customers. Responsibilities include language-agnostic software development, MVC frameworks, relational databases, Linux environments, RESTful web applications, DevOps, Agile development, and frequent end-user collaboration. Engineers must work onsite two to five days weekly and hold an active Top Secret or TS/SCI clearance.

Develop scalable Java and Python applications for mortgage trading, quantitative analytics, workflows, and reporting. Integrate AI and generative AI capabilities, collaborate with business and technology teams, and oversee application development from analysis through production. Responsibilities include coding, testing, CI/CD, debugging, operational support, process improvement, and resolving complex technical initiatives. The role also advises stakeholders and coaches junior analysts while working with limited supervision.

Build and own high-volume backend services for automated jobs, including scheduling, queues, retries, and third-party integrations. Design scalable infrastructure, maintain data integrity and uptime, manage production performance, and deliver features from scoping through deployment. The role involves shaping platform architecture, handling heavy traffic, and collaborating closely with the technical lead. Candidates need startup experience, large-scale background processing expertise, Effect or functional TypeScript experience, and the ability to work hybrid in San Francisco.

Develop and enhance Ferguson’s custom Trilogie ERP system across multiple functional areas. Responsibilities include designing business-process solutions, owning software projects through implementation, integrating APIs and web services, collaborating with analysts, product owners, QA teams, administrators, and vendors, writing unit tests, reviewing code, and optimizing performance in high-transaction environments. The role also supports Trilogie’s migration from Unix to Linux and requires extensive UniBasic or Pick-based development experience.

Develop, test, deploy, maintain, and support software applications, APIs, web services, and microservices using C#, .NET, Azure, and SQL. Analyze requirements, design scalable solutions, troubleshoot production issues, optimize performance, participate in code reviews, document technical processes, and collaborate with business, QA, IT operations, and service desk teams. The role also promotes Agile practices, Test-Driven Development, continuous improvement, and adoption of emerging technologies.

Leads the design and development of full-stack SaaS features, including backend services, APIs, integrations, and frontend experiences. Makes technical decisions, facilitates design discussions, mentors engineers, and promotes secure, scalable, testable, observable systems. The role includes breaking down complex work, participating in code reviews, using CI/CD and automated testing, and owning software through production support.

Develop and maintain Splunk-integrated applications, APIs, scripts, services, and DevOps automation. Build data routing and transformation workflows, manage Git repositories, troubleshoot defects and escalated issues, and improve system reliability and performance. The role supports mission-critical intelligence operations and requires collaboration with data providers, consumers, technical teams, and stakeholders.

Design, develop, and maintain scalable backend systems and APIs using Java, Python, or other programming languages. Collaborate with cross-functional teams, product managers, and designers to deliver reliable software solutions. Troubleshoot application issues, ensure performance, and mentor junior engineers. The role requires strong software design, cloud technology, analytical, communication, and teamwork skills.

Design, develop, test, and operate large-scale distributed software services within Microsoft Security. Responsibilities include system and interface design, code and design reviews, secure and reliable modular components, integration testing, monitoring, troubleshooting, automation, and Live Site optimization. Engineers collaborate with product and engineering teams to deliver data-driven customer experiences and may work on cloud, secure software, and AI/ML-powered systems.

Design and implement C++ features for MongoDB’s replication infrastructure, improving availability, recovery, consistency, performance, and fault tolerance. Diagnose distributed-systems issues, develop comprehensive tests, collaborate across engineering teams, participate in design and code reviews, and mentor junior engineers. The role involves owning technical work from investigation through delivery and contributing to major MongoDB releases.

Own and evolve core transaction platform services handling global remittances at scale. Responsibilities include designing resilient APIs and distributed systems, improving delivery estimates, leading multi-engineer initiatives, migrating production systems, managing reliability and on-call operations, evaluating AI-generated code, collaborating cross-functionally, and mentoring engineers.

Develop, test, integrate, verify, and deploy safety-critical ground software for lunar mission operations. Responsibilities include mission-control systems, telemetry processing, spacecraft monitoring, fault detection, system integration, simulations, deployment, documentation, and operator training support. The role collaborates across spacecraft, infrastructure, and operations teams while maintaining software safety, reliability, and certification standards.

Design, build, test, and release secure shared services, libraries, pipelines, APIs, and platform capabilities for data and AI products. Partner with product managers, evaluate technologies, create design proposals, develop reusable versioned interfaces, and support production operations. Contribute to architecture and roadmap decisions, conduct code and design reviews, mentor engineers, and establish engineering practices for a new team.