Top Software Engineer Jobs

Develop, test, debug, document, integrate, and deploy software applications and systems in an Agile environment. Responsibilities include designing secure APIs, analyzing user and system requirements, developing software using mathematical models, supporting frontend and database development, coordinating installations, and monitoring cloud-deployed applications. The role collaborates with systems engineers, analysts, programmers, agencies, and industry partners while supporting a national security mission.

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.

Develop and maintain COBOL applications supporting Medicare Fee-for-Service claims processing in a legacy mainframe environment. Responsibilities include designing, coding, debugging, unit testing, implementing enhancements, troubleshooting defects, documenting changes, and supporting Agile/Scrum delivery commitments. The role collaborates with technical teams, clients, and vendors while contributing to solutions of moderate complexity and maintaining reliable healthcare system operations.

Develop and enhance web-based applications using C# and .NET, integrating relational databases and supporting Finance-related business functions. Responsibilities include translating requirements into functionality, troubleshooting production issues, implementing fixes and security remediations, writing tests, and participating across the full software development lifecycle. The engineer will collaborate with technical teams and business stakeholders while maintaining multiple applications through deployment, production support, and ongoing enhancements.

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.

Develops, tests, documents, enhances, and maintains software applications supporting business requirements. Collaborates with internal teams to define specifications, writes and debugs code, monitors performance, prepares status reports, trains end users, and supports application improvements. The role uses C#, .NET, React, AWS, databases, shell scripting, source control, and development tools. On-call availability and some travel may be required.

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.

Designs, develops, troubleshoots, and tests software supporting reference architectures. Analyzes architecture designs, defines integration requirements, develops validation procedures, coordinates CI/CD pipelines, and updates hardware specifications as systems reach end of life or new capabilities become available.

Supports the NSWC Crane Model-Based Engineering Assessment Division on electromagnetic spectrum operations efforts. Executes technical instructions under government direction for research, development, test and evaluation, mission engineering, modeling and simulation, and fleet-support activities. Applies software engineering practices while complying with quality, configuration-management, and security requirements.

Support sustainment and modernization of a Full Motion Video platform. Develop, test, and maintain backend services and automation (Node.js, Python, PostgreSQL), assist CI/CD and deployment, troubleshoot defects, perform security remediation, participate in Agile development and documentation, and work with senior engineers on feature implementation and infrastructure modernization.

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, 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.

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.

Build and support full-stack applications, automation tools, AI-powered solutions, data pipelines, and backend services for Walmart Marketplace. Develop production-grade code using Python, Java, React, and React Native; design scalable distributed systems; investigate complex operational issues; and own projects from requirements through production support. Collaborate with business, product, operations, support, and engineering teams while influencing architecture and improving reliability, efficiency, and customer experiences.

Build and improve DeepL’s API platform and developer experience through self-service onboarding, configuration flows, reusable platform components, documentation, SDKs, and starter templates. Collaborate across product and engineering teams, write tested production code, contribute to monitoring and alerting, and participate in incident response. The role emphasizes backend development, RESTful APIs, reliability, developer-centric design, and occasional full-stack work with React and TypeScript.

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.

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.