Top Software Engineer Jobs in Philadelphia, PA

Designs, develops, tests, documents, and debugs embedded and Windows software for ground and test equipment. Follows the full software development lifecycle, participates in technical reviews and audits, resolves software issues, and supports formal testing and delivery. The role requires C or C++ development, software configuration management, Agile practices, and the ability to obtain a Secret clearance.

Develop, review, deploy, monitor, and integrate software in collaborative Linux-based environments. Build front-end interfaces using JavaScript, TypeScript, and React; maintain relational databases such as PostgreSQL; and support DevSecOps and CI/CD workflows. Desired experience includes Docker, Kubernetes, GitLab, cloud platforms, and backend C++ development for image-processing algorithms. An active Secret clearance is required before starting.

Develops web-based applications and backend business logic for JASSM targeting and strike-planning solutions. Participates in the full software engineering lifecycle within an Agile, cross-functional defense environment. Responsibilities include software design, troubleshooting, database development, API and microservices implementation, DevOps, and data architecture. The role supports mission-critical customer solutions and requires eligibility for a DoD Secret clearance and U.S. citizenship.

Design, develop, document, test, and debug software for critical military communication systems. Participate in Agile ceremonies, apply software development lifecycle practices, support model-based engineering and systems integration, and contribute to verification and automated testing. Candidates should understand enterprise integration, infrastructure fundamentals, and software testing techniques. The role requires U.S. citizenship and the ability to obtain a DoD Secret clearance with special facility access.

Develops and troubleshoots software using modern object-oriented programming languages. Works collaboratively on small teams, applies critical thinking to complex hardware and software issues, and uses Agile development practices. The role may involve test automation, infrastructure as code, CI/CD, software design patterns, and C/C++ code comprehension. Candidates must be able to obtain and maintain a Top Secret clearance.

Plans, develops, documents, tests, debugs, and maintains mission-focused software. Applies software engineering standards and development lifecycle practices, resolves programming issues, prepares documentation, and collaborates with users and development teams. The role supports operational mission software and may involve satellite mission planning, spacecraft operations, orbital mechanics, and aerospace systems. Requires experience with object-oriented programming, Agile methods, and modern development tools.

Software Engineer Intern supporting Agile development for secure military communication systems. Responsibilities may include software design, systems engineering, integration, infrastructure, requirements analysis, verification, testing, and maintenance. The intern will participate in Agile ceremonies and apply model-based engineering, enterprise integration, cloud, operating system, networking, virtualization, and automated testing concepts while collaborating with technical teams.

Designs, develops, integrates, tests, documents, and debugs software products for mission applications. Integrates software with Lockheed Martin hardware and National Instruments test modules, develops scripts to convert raw data into test reports, supports flight-unit test-rack integration, and participates in technical reviews and audits. Applies software development standards throughout the lifecycle and resolves programming and system capability issues.

Develop and test software for complex space systems using object-oriented programming, CI/CD, cloud-native tools, and Agile Scrum practices. Responsibilities include designing, documenting, debugging, and deploying mission-focused software; applying software engineering standards; writing unit, integration, and end-to-end tests; resolving program issues; and supporting secure, continuous delivery. The role contributes to space domain awareness, sensor optimization, satellite constellation planning, and future space defense capabilities.

Develops, tests, documents, debugs, and maintains software supporting business or mission applications. Applies software development standards, processes, and tools throughout the lifecycle; analyzes system requirements, resolves programming issues, corrects errors, and prepares operational documentation. The role requires a science or technology degree, U.S. citizenship, and eligibility for a government security clearance. Desired experience includes programming, scripting, web development, system analysis, software design, testing, databases, and system administration.

Performs software engineering assignments during college vacations or short-term breaks. Supports technical and engineering organizations while pursuing a relevant bachelor's degree. Desired experience includes Java or C#, GitLab, Linux, Docker, Kubernetes, Helm, Ansible, cloud technologies, Agile methodology, and Microsoft Office. The role requires collaboration, strong communication, and U.S. citizenship.

Develop and support high-performance computing software and workflows for scientific modeling and simulation. Port, optimize, parallelize, benchmark, and tune user codes and libraries across heterogeneous Linux environments. Provide technical user support, troubleshoot access and workspace issues, configure software environments, analyze performance, and recommend solutions for secure HPC systems. Collaborate with customers, scientists, and technical leads to meet research and data requirements.

Develops and leads satellite mission planning software, including algorithms, scheduling, resource allocation, and operational workflows. Provides technical leadership as a mission planning subject matter expert, supports requirements and architecture activities, leads complex feature implementation, mentors engineers, and collaborates with systems engineers, operators, architects, and customers. Participates in Agile development, testing, technical reviews, demonstrations, and software lifecycle activities while maintaining required security clearance.

Develops and maintains command-and-control web applications supporting space missions and satellite, antenna, and ground hardware assets. Responsibilities include designing, coding, testing, debugging, documenting, and demonstrating software capabilities within an Agile team. The role collaborates with engineers, customers, and subject matter experts, participates in Scrum ceremonies, and applies modern cloud-native, DevSecOps, and CI/CD practices across classified and unclassified environments.

Design, develop, document, test, and debug software for critical military communication systems. Participate in Agile ceremonies and apply software development lifecycle practices across requirements, design, verification, integration, and maintenance. Candidates should understand software testing, systems modeling, enterprise integration, infrastructure fundamentals, and AI prompting. The role requires U.S. citizenship and the ability to obtain a DoD Secret clearance, with special facility access.

Designs, configures, tests, and supports SAP S/4HANA Project Systems, Production Costing, and Manufacturing Earned Value functionality. Translates business processes into technical specifications, ensures enterprise application integration, and provides stable, scalable solutions for Lockheed Martin’s digital transformation program. Collaborates with engineering, IT, and business stakeholders in agile and waterfall environments, supporting requirements definition, system design, configuration, production support, and process optimization.

Design, develop, document, test, and debug software for critical military communication systems. Participate in Agile ceremonies and contribute to requirements, systems design, verification, integration, and maintenance activities. Apply analytical problem-solving across model-based engineering and enterprise integration domains, while supporting secure and uninterrupted mission capabilities.

Software Engineer Intern assigned to a scrum team supporting software design, development, documentation, testing, debugging, and integration for mission applications. Responsibilities include agile development, troubleshooting across Linux and Windows environments, resolving program errors, applying development standards, and supporting COTS/FOSS integration. Candidates need Java experience, strong problem-solving and communication skills, and the ability to obtain a TS/SCI clearance.

Develops, tests, debugs, and maintains software for spaceborne and ground-based systems, including satellite payloads, ground segments, on-orbit servicing, and space domain awareness tools. Collaborates with systems engineering and mission operations teams on requirements and architecture, supports software verification and lifecycle activities, resolves software anomalies, and improves development processes, tooling, and coding standards.

Serves as both Scrum Master and software developer, leading cross-functional Agile teams while designing, developing, testing, debugging, and documenting software. Applies software development standards and lifecycle processes to mission and business applications. Collaborates across organizational and geographic boundaries, supports systems integration and testing, and works with technical teams and government stakeholders. The role requires knowledge of ground systems, networks, cloud platforms, microservices, APIs, DevOps, containerization, and modern data architecture.

Develops, tests, deploys, maintains, and upgrades software applications throughout the full SDLC. Responsibilities include writing scalable and testable code, building microservices and RESTful APIs, creating automated tests, troubleshooting issues, optimizing performance, and collaborating in Agile/Scrum teams. The role requires full-time onsite work in King of Prussia, an active TS/SCI clearance with a fully adjudicated CI polygraph, and software development experience primarily in Python, JavaScript, or TypeScript.

Develop and support enterprise applications using Java, Python, AWS, Spring, APIs, microservices, and database technologies. Responsibilities include refining requirements, writing and testing code, deploying across environments, troubleshooting production issues, evaluating scalable and secure solutions, collaborating with QA, product owners, vendors, and offshore teams, and documenting and presenting technical work in an agile environment.

Designs, develops, integrates, and supports Murex solutions across trading, risk, accounting, datamart, and reporting functions. Builds integrations, ETL pipelines, reports, and data flows using Java, SQL, cloud, and enterprise technologies. Troubleshoots production issues, supports testing, releases, upgrades, and modernization initiatives, while collaborating with business and technology teams and mentoring developers.

Develop and deploy full-stack software for mission-critical space systems. Responsibilities include implementing features, writing unit and integration tests, participating in code reviews, troubleshooting issues, working with RESTful APIs and microservices, deploying to cloud platforms, using CI/CD practices, and collaborating across teams. The role also includes mentoring junior engineers, documenting work, participating in Agile ceremonies, and contributing to code quality and process improvements.

Develop and deploy full-stack software for mission-critical space systems. Responsibilities include implementing features, writing unit and integration tests, participating in code reviews, troubleshooting applications, working with RESTful APIs and microservices, deploying to cloud platforms, supporting CI/CD, and collaborating in Agile teams. The role also involves mentoring junior engineers, documenting work, and contributing to code quality and process improvements.