Top Senior Software Engineer Jobs in Philadelphia, PA

Design, implement, and maintain embedded firmware and cloud-ready microservices/APIs. Develop embedded Linux using Yocto, integrate hardware and device drivers, improve CI/CD pipelines, mentor junior engineers, troubleshoot performance issues, and collaborate with cross-functional teams to deliver scalable, secure software for connected devices.

Leads software airworthiness certification for military aerospace programs, including certification strategy, regulatory engagement, audits, compliance documentation, cost and schedule oversight, and mentoring certification personnel. Applies EMAR 21, DO-178C, MIL-HDBK-516C, and FAA standards while providing technical consultation, executive reporting, training, and regulatory advocacy. The role supports multidisciplinary programs and may require up to 25% travel.

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.

Develops and supports enterprise software and the Atlassian Jira platform. Responsibilities include writing and testing Java-based applications, troubleshooting production and integration issues, administering Jira configurations and automations, supporting cloud-native applications, and collaborating with development, DevOps, database, and technical operations teams. The role also involves platform upgrades, deployments, documentation, process improvements, and integration with source control, CI/CD, monitoring, and other enterprise tools.

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.

Designs, develops, and implements automated test software and techniques for complex RF electronic assemblies and systems. Develops test applications for FPGA- and CPU-based systems, hardware interfaces, communication protocols, and RF test equipment. Supports integration, qualification, acceptance testing, product development, customer requirements, test procedures, and cross-functional engineering operations. Requires extensive test engineering and programming experience, RF measurement expertise, U.S. person eligibility, and the ability to obtain and maintain a security clearance.

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.

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.

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.

Lead the design, development, testing, and delivery of complex Java software solutions for government and national security customers. Build RESTful microservices, collaborate on frontend and backend systems, establish quality standards, conduct code reviews, explore new technologies, and mentor junior engineers. The role involves technical leadership, Agile delivery, DevOps, cloud infrastructure, and working onsite at client locations three to four days per week after obtaining security clearance.

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.

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.

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.

Own quality engineering for a hardware-integrated kiosk system through manual, exploratory, regression, integration, and automated testing. Lead UAT and release validation, investigate hardware/software defects, assess release risks, maintain Cypress and TypeScript automation, and mentor QA engineers. Partner with engineering and product teams to improve testability, coverage, and quality standards across kiosk hardware, software integrations, client configurations, and releases.

Leads embedded software development for optical networking products, designing features, resolving legacy issues, and improving product performance. Drives code reviews, design practices, documentation, and customer and field application support. Requires expertise in C/C++, embedded Linux, networking protocols, optical networking systems, Agile development, CI/CD, DevOps, virtualization, and container technologies. The role is onsite in Horsham, Pennsylvania, with occasional travel.

Design, develop, test, and maintain full-stack software applications for a secure financial-services compliance platform. Responsibilities include building database objects and data pipelines, optimizing performance across application layers, developing server-side web features, testing and debugging, participating in code reviews and agile ceremonies, documenting systems, and following secure coding and regulatory compliance practices.

Designs, builds, and scales cloud-native healthcare solutions and distributed systems. Responsibilities include architecture, API integration, performance optimization, CI/CD, infrastructure automation, containerization, monitoring, security, testing, documentation, root cause analysis, and mentoring engineers. The role partners with product, design, infrastructure, and business teams while owning significant product features and improving engineering practices.

Design, build, and scale cloud-native healthcare software and distributed systems. Own architecture, API integrations, performance, reliability, security, CI/CD, observability, and technical documentation. Mentor engineers, establish engineering best practices, collaborate with product and cross-functional teams, and deliver customer-focused features that improve healthcare discharge workflows.

Lead the architecture, development, testing, deployment, and maintenance of Android applications supporting Philadelphia City services. Build Kotlin-based applications with modern Android frameworks, integrate APIs and backend services, ensure accessibility, security, and performance, and support Google Play submissions. Collaborate with product, design, engineering, and City stakeholders; conduct code reviews, mentor developers, troubleshoot mobile issues, and contribute to CI/CD, monitoring, and agile delivery practices.

Design, architect, build, and deliver core identity and access management services for MongoDB Atlas. Lead complex technical projects from specification through delivery, improve engineering practices and code quality, define priorities, and mentor team members. The role focuses on authentication, authorization, backend systems, and secure customer-facing IAM features while supporting FedRAMP requirements.

Lead the architecture, development, optimization, and production support of URBN’s inventory management platform. Design scalable APIs, event-driven systems, data stores, caching, testing, observability, and resilient deployment practices. Own technical roadmaps and delivery outcomes, lead incident response, establish engineering standards, coordinate with cross-functional teams, and mentor engineers. The role requires hands-on backend expertise and ownership of complex systems from design through production.

Develop and support corporate tax workstation products using .NET, C#, Dynamics 365, Power Automate, ASP.NET, and SQL Server. Responsibilities include technical design, coding, testing, troubleshooting, deployment, performance and security improvements, documentation, code reviews, and mentoring developers. The role collaborates with stakeholders and international teams to deliver reliable solutions on schedule.