Top Software Engineer Jobs

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.

Develop, maintain, test, and enhance complex software systems for an Intelligence Community mission. Responsibilities include resolving software issues, applying software design methodologies, documenting test results, analyzing requirements, and contributing to system design decisions involving hardware/software trade-offs and COTS/GOTS solutions.

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 and maintain a full-stack cloud-based ELINT data product for the Intelligence community. Responsibilities include designing, developing, testing, documenting, deploying, and supporting new features and updates; collaborating with developers and DevOps teams; participating in architecture and design reviews; and ensuring data accuracy, interoperability, and fidelity for tactical users.

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 large-scale cloud software and distributed systems across the full SDLC. Responsibilities include requirements analysis, system design, full-stack development, issue resolution, NoSQL and parallel-computing implementation, testing, CI/CD, production deployment, documentation, and integration of FOSS/COTS products. Collaborate with data scientists, engineers, and product managers while supporting mission-critical applications.

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, integrate, and test real-time embedded software for military mission systems and avionics architectures. Responsibilities include mission computing, data links, sensors, communications, navigation, displays, electronic warfare, and weapon systems. The role involves software architecture, interoperability testing, protocol implementation, and integration in laboratory and simulated environments. Candidates will collaborate across engineering and deployment teams, work onsite full-time in Fort Worth or Palmdale, and travel approximately 10%.

Develop and maintain COBOL-based Medicare claims processing software in a legacy mainframe environment. Responsibilities include designing, coding, debugging, unit testing, implementing enhancements, troubleshooting defects, supporting Agile/Scrum delivery, preparing estimates, maintaining documentation, and collaborating with team members, clients, and vendors. The role supports Durable Medical Equipment claims processing and requires adherence to structured development standards.

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.

Join Perpay as a Software Engineering New Grad. Contribute to coding, testing, and releasing features, while learning in a supportive and collaborative environment. Ideal for candidates with internships in full-stack development interested in a mission-driven role.

Develop and maintain ecommerce software across the full software development lifecycle. Design microservices and event-driven systems, build customer-facing features, improve existing applications, troubleshoot production issues, and collaborate with architects, developers, QA, business analysts, and end users. The role requires Python or Golang, RESTful services, asynchronous processing, data modeling, web technologies, databases, testing, cloud platforms, and professional experience using AI coding agents.

Develop and evolve Nuuly’s stable, scalable services platform. Responsibilities include designing and delivering features, collaborating with product and QA teams, contributing to architecture and roadmaps, supporting deployments, and participating in technical decision-making. The role requires JVM development, cloud and Kubernetes integration, streaming and distributed-systems knowledge, testing expertise, and the ability to provide technical leadership and mentorship.

Develop and maintain full-stack software supporting cyber-threat intelligence analysis. Responsibilities include designing user interfaces, application services, and data layers; troubleshooting integration issues; testing, documenting, deploying, and operating mission software; participating in code reviews and technical design; and collaborating with engineers, analysts, and mission stakeholders.

Designs, develops, tests, reviews, and maintains scalable identity and access management applications using Java and JavaScript. Collaborates on requirements, software specifications, coding standards, CI/CD workflows, bug fixes, and technical issue resolution in Agile environments. The role supports authentication infrastructure integrating identity providers, entitlement services, and downstream APIs on AWS ECS and EKS, with opportunities to use AI-assisted development tools and infrastructure-as-code practices.

Develop and maintain the 3DCS dimensional variation analysis platform across multiple modules. Responsibilities include translating requirements into technical solutions, designing C++ functionality, maintaining a long-lived codebase, testing numerical accuracy, performing corrective maintenance, supporting customers, reviewing code, and contributing to technical improvements. The role collaborates with product, application engineering, technical leadership, external partners, and globally distributed teams.

Develop, test, maintain, and productize scalable software for national security and federal research programs. Apply software engineering principles, modern programming languages, version control, CI/CD, automated testing, cloud or container technologies, and performance optimization. Troubleshoot operating systems and I/O, understand network protocols, collaborate with researchers and engineering stakeholders, communicate program status, and travel frequently to sponsor and contractor locations. The position is fully on-site in State College, Pennsylvania, with limited hybrid flexibility.

Develop, test, maintain, and productize scalable software for national-security research programs. Collaborate with engineers, researchers, principal investigators, sponsors, and stakeholders; troubleshoot operating systems and I/O issues; apply software architecture, algorithms, version control, cloud, distributed systems, and container technologies. Provide program updates, support transition efforts, and complete project tasks on schedule. The position is fully on-site in Reston, Virginia, with frequent travel to sponsor and contractor locations.

Develop, test, and productize scalable software solutions for defense and federal research programs. Responsibilities include full-lifecycle software engineering, troubleshooting, performance optimization, technical design, documentation, stakeholder collaboration, program updates, and supporting technology transition efforts. The role is fully on-site in State College, Pennsylvania, with frequent travel to sponsor and contractor locations, including trips lasting up to two weeks.

Develop and maintain scalable identity and access management applications using Java and JavaScript. Design moderately complex software components, write quality code, perform unit testing, review specifications, resolve defects, and collaborate in Agile teams. Work with identity providers, authentication flows, OIDC clients, CI/CD pipelines, GitHub workflows, AWS container platforms, and complex data models. Familiarity with AI-assisted development, Terraform, Docker, and Kubernetes is beneficial.

Develop and lead software engineering, architecture, integration, testing, modernization, and sustainment efforts for mission-critical Department of War planning and readiness applications. Analyze legacy systems, develop prototypes, document architectures, assess technical risks, support acquisition decisions, and mentor development teams. The role requires collaboration with government, military, program office, and contractor stakeholders, plus travel of up to 25%.

Design, build, test, and maintain Python applications and RESTful APIs; develop and optimize Microsoft SQL Server databases; troubleshoot production issues; collaborate with stakeholders; create documentation; mentor junior engineers; promote engineering best practices and AI-assisted tooling to improve productivity and quality.

Designs, develops, tests, and supports data-center networking features for Cisco’s 8000 platform using SONiC. Builds forwarding and services data-plane capabilities, control-plane software, and automated kernel-module validation suites. Codes primarily in C++ and Python while working with Linux, networking protocols, open networking APIs, debugging tools, and CI/CD technologies. The role contributes to large-scale distributed systems supporting AI/ML workloads and high-volume internet infrastructure.

Leads technical strategy and software architecture across Streaming Hub application teams. Oversees modernization, API standards, cloud infrastructure, CI/CD, testing, observability, resiliency, and AI-assisted engineering practices. Provides design oversight, drives technical-debt reduction, improves developer productivity and operational performance, mentors senior engineers, and partners with Engineering, Product, Architecture, and Quality Assurance teams to deliver scalable, secure, reliable software.

Build and maintain PHP/Symfony backend services and Vue 3 frontend features for an event and conference platform. Responsibilities include designing modular services, developing REST APIs and UI widgets, modeling Doctrine entities, optimizing MySQL queries, integrating third-party services, writing unit and functional tests, maintaining technical documentation, and deploying and troubleshooting production systems.