Top Software Engineer Jobs in Philadelphia, PA

Manages and grows a mobile software engineering team, oversees mobile application development and deployment, enforces coding and testing standards, mentors engineers, supports production systems, and coordinates with web, infrastructure, UX, and design teams. The role also manages project timelines, SLAs, technical issues, software development processes, and partnerships while contributing code and improving delivery practices.

Lead the end-to-end architecture and development of safety-critical embedded device software for energy products. Responsibilities include metering, real-time control, communications, hardware-software co-design, secure firmware updates, certification, CI/CD, testing, and production scaling. The role combines hands-on firmware development in C, C++, or Rust with technical leadership, workstream delegation, code review, and collaboration across electrical engineering and external certification organizations.

Build and maintain Python services and APIs within a Kafka-based event streaming platform. Develop enterprise integration services, support migration from legacy systems to cloud-native platforms, write automated tests, participate in code reviews, troubleshoot defects, and document service patterns. Collaborate with product, platform, and engineering teams while developing expertise in distributed systems, Kafka topic design, schema evolution, and agentic coding tools.

Develop, test, debug, optimize, and support desktop, web, and client-server applications for CATV and satellite set-top box and modem testing platforms. Create technical documentation, troubleshoot hardware and software issues, configure routers, analyze test results, maintain lab systems, release products to production, and collaborate with engineering leads, subject matter experts, and customers.

Build and support file-based client data integrations, troubleshoot data flows and production issues, manage SFTP and authentication workflows, monitor recurring jobs, validate and transform structured files, automate reporting and operational tasks, and collaborate with engineering, infrastructure, security, operations, and client teams to improve reliability and service continuity.

Leads software architecture and engineering for complex classified government systems. Responsibilities include designing cloud-native distributed architectures, establishing APIs and interface standards, guiding DevOps and CI/CD adoption, governing software quality and resilience, managing technical risks, conducting customer technical exchanges, and mentoring distributed engineering teams. The role requires collaboration with government customers and subcontractors and supports mission-critical space and national security applications.

Develops, tests, deploys, and maintains scalable software applications across the full SDLC. Responsibilities include writing clean code, building microservices and REST APIs, creating automated tests, troubleshooting issues, optimizing performance, and collaborating with product managers, architects, and engineers in an Agile/Scrum environment. The role requires active Secret clearance and primarily onsite work in King of Prussia, Pennsylvania.

Leads interdisciplinary teams developing and deploying advanced algorithms for signal and image processing, space domain awareness, satellite communications, and signals intelligence. Responsibilities include applying data structures and algorithms, using cloud services, researching cutting-edge concepts, guiding software from prototype to operations, and preparing technical documentation. The role is on-site in King of Prussia, Pennsylvania, requires an active TS/SCI clearance, and does not offer visa sponsorship.

Develop and maintain scalable .NET software through the full SDLC. Responsibilities include designing applications and APIs, contributing to microservices and cloud-native architecture, implementing DevOps and CI/CD practices, building automated tests, supporting observability and incident response, applying secure coding, and collaborating in Agile teams. The role is fully onsite in Warren, Michigan, Monday through Friday.

Develop and maintain scalable .NET software through the full SDLC. Responsibilities include building REST APIs and integrations, contributing to microservices and cloud-native architecture, applying DevOps and containerization practices, creating automated tests, supporting observability and incident response, implementing secure coding practices, and collaborating in Agile/Scrum teams. The role is fully onsite in Warren, Michigan.

Develop and maintain scalable .NET software throughout the SDLC. Responsibilities include designing RESTful integrations, contributing to microservices and event-driven architecture, implementing Azure cloud solutions, applying DevOps and containerization, building automated tests, monitoring applications, practicing secure coding, and collaborating within Agile teams. The position is fully onsite in Warren, Michigan, Monday through Friday.

Develop, test, and release customer-facing and internal software features. Write clean, maintainable, testable code; participate in design and code reviews; collaborate with product, design, data, analytics, and operations teams; and contribute to software architecture and engineering processes. This onsite new-graduate role emphasizes full-stack development, learning, communication, and rapid professional growth.

Build and operate full-stack applications and AI-facing features for CoreWeave’s internal data platform. Responsibilities include developing TypeScript, React, Next.js, and Python services; designing APIs and relational data models; integrating analytical data platforms; deploying on Kubernetes; and owning production reliability, testing, observability, and on-call support. The role also involves collaborating with non-engineers to define processes, shipping LLM-backed applications, and evaluating AI output quality.

Designs and implements scalable software solutions, translates client requirements into technical designs, writes and reviews code, solves complex development and support problems, estimates tasks, collaborates with clients and stakeholders, improves development processes, and mentors developers. Requires experience with C#, web technologies, REST APIs, relational databases, Git, Agile methodologies, and Jira or Azure DevOps.

Leads software engineering teams in designing, developing, testing, and supporting web and cloud-based applications. Responsibilities include system architecture, Java and API development, database design, microservices, CI/CD, cloud technologies, technical mentoring, solution analysis, standards development, and collaboration with business product owners and offshore developers in an agile environment.

Develop and test web and mobile platform features, write maintainable code, manage SQL Server databases, integrate APIs and third-party tools, participate in code reviews, troubleshoot bugs, and improve accessibility and user experience.

Designs, develops, and delivers secure, scalable software solutions. Responsibilities include system architecture, code reviews, performance optimization, cloud solution development, CI/CD automation, containerization, monitoring, security compliance, vendor integrations, technical evaluations, and mentoring engineers.

Build and maintain backend services and metadata pipelines supporting data discovery, governance, and AI/ML workflows. Responsibilities include integrating relational databases, developing Java, Node.js, and Python services, optimizing distributed pipelines, implementing Terraform infrastructure, supporting GitLab CI/CD, and writing comprehensive tests. The role also involves troubleshooting scalability and reliability issues, designing asynchronous workflows, and collaborating on modern data lake, search, metadata, and LLM-enabled technologies.

Develops, customizes, tests, deploys, and supports Guidewire applications across the full stack. Responsibilities include Java/Gosu coding, SQL development, integrations, APIs, front-end and back-end systems, production support, release management, SDLC enforcement, testing, and technical guidance for junior and offshore developers. Requires on-call support for critical issues and project go-lives.

Build and maintain full-stack behavioral health technology features and services. Responsibilities include translating team goals into technical plans, designing APIs and services, evaluating technical tradeoffs, identifying risks, contributing to architecture, collaborating with product and QA, mentoring junior engineers, and improving testing and engineering practices. The role requires C#, TypeScript, .NET, modern frontend frameworks, databases, CI/CD, Docker, Kubernetes, and automated testing experience.

Evaluate AI coding-agent interactions for usefulness, correctness, engineering judgment, reasoning quality, and developer trust. Provide clear, opinionated feedback, distinguish response-quality levels, and help define standards for excellent interactions with tools such as OpenAI Codex, Claude Code, and Cursor. This contract role requires staff- or principal-level software engineering experience and familiarity with modern AI-assisted development workflows.

Leads embedded software development for optical networking products, including feature design, legacy issue resolution, code reviews, documentation, and system performance improvements. Collaborates with validation, integration, hardware, test, documentation, field applications, and customers. Requires expertise in C/C++, embedded Linux, networking protocols, optical networking systems, Agile development, CI/CD, and DevOps practices.

Designs and develops embedded software and firmware for optical networking products, resolves legacy product issues, and improves performance with cross-functional engineering teams. The role includes maintaining documentation, coaching junior engineers, leading code reviews, supporting customer and field application interactions, and contributing throughout the Agile and DevOps lifecycle. Requires expertise in C/C++, embedded Linux, networking protocols, optical networking systems, and system-level software functions.

Develop and maintain embedded software and firmware for optical networking products. Design features, resolve legacy-product issues, improve performance, maintain documentation, and collaborate with validation, hardware, optical, and test engineering teams. Coach junior engineers, lead code reviews, support customer and field application interactions, and contribute across Agile, CI/CD, and DevOps workflows. The role requires expertise in C/C++, embedded Linux, networking protocols, optical networking systems, and multi-process and multi-threaded design.

Develops and supports Python- and .NET-based applications, APIs, automation tools, ETL processes, and cloud solutions. Responsibilities include software design, coding, testing, troubleshooting, production support, root cause analysis, data validation, and continuous improvement in an agile environment. The role uses AWS, databases, integration frameworks, CI/CD tools, distributed computing technologies, and scripting languages while collaborating with internal, offshore, and contract development teams.