Top Senior Software Engineer Jobs in Philadelphia, PA

Build scalable, high-concurrency backend services in Go on AWS to integrate third-party IoT devices via cloud-to-cloud APIs and event-driven patterns. Design integrations handling auth/token lifecycles, rate limits, retries, idempotency, and state reconciliation. Support existing Java/Spring Boot platform during transition, participate in architecture discussions, improve observability and reliability, and own features end-to-end.

Lead cross-domain technical engagements across cloud, payments, observability, and ML. Provide hands-on architecture, prototypes, and code reviews; set technical direction; mentor engineers; build relationships with senior stakeholders; decompose ambiguous problems; ensure performance, scalability, operability, and security; and operate in a rapid SWAT-style model to unblock teams and transition work to long-term owners.

The Software Engineer, III collaborates with the development team to enhance a healthcare technology platform by developing features, resolving issues, and maintaining code quality, while also mentoring junior developers.

Design and build software tooling, firmware, and infrastructure for semiconductor design, verification, manufacturing, and post-silicon validation. Develop drivers, BSPs, compute/cloud/HPC infrastructure, data pipelines, test orchestration, and debug tooling. Partner with hardware and EDA teams, optimize performance and scalability, produce documentation, and mentor junior engineers.

Design, build, and integrate robotics software across the full stack: sensor integration, perception, localization/SLAM, sensor fusion, motion planning, control, behavior systems, ROS/ROS2 integration, simulation, field testing, safety patterns, and documentation; mentor junior engineers and collaborate cross-functionally.

Lead technical delivery across short-term, high-priority engineering engagements: write production code, make architecture decisions, mentor small teams, ensure quality, and rapidly onboard to unfamiliar systems spanning full-stack, cloud/DevOps, SRE, and ML domains.

Design and build a Go/AWS-first platform for scalable third-party device onboarding. Lead architecture for cloud-to-cloud API and event-driven integrations, implement high-concurrency backend services, ensure reliability and observability, support legacy Java platform during transition, own end-to-end delivery, and mentor the team.

Design, build, test, deploy, and maintain scalable Java and Python microservices. Lead requirements analysis, automated testing, CI/CD, containerization, and collaborate with engineering teams to deliver cloud-based services.

Design and develop complex software solutions for the FedNow service, leveraging cloud technologies, Java, and Agile methodologies, ensuring high-quality and timely infrastructure support.

The Advanced Software Engineer designs, develops, and maintains scalable software solutions, integrating AI capabilities across the software lifecycle while collaborating with cross-functional teams.

Design, deploy, and test modular front-end user interfaces; gather user requirements via customer working groups and wireframes; coordinate with backend developers; create end-to-end tests and participate in usability events to validate UI functionality within mission software deployments.

Design, develop, and implement C# microservices and a containerized simulator for verification/validation. Build and run unit, system, and end-to-end tests, manage CI/CD, containerize and deploy with Docker/Kubernetes, participate in agile events, support integration and installation events, and engage with customer working groups.

Design, build, and support Salesforce solutions using Apex and Lightning Web Components. Configure and customize Salesforce, integrate third-party tools, follow development lifecycle and best practices, mentor junior developers, commit code to Git, and advise government healthcare clients on modernization and platform improvements while meeting vetting requirements.

Leads software application development, from requirements and design to coding and testing, focusing on web applications using Next.js and ASP.NET Core.

Develop enterprise solutions using AWS, manage data workflows, mentor junior staff, and ensure secure coding practices while collaborating with various teams.

The role involves data collection for AI model training, managing cloud infrastructure, and collaborating with scientists to enhance data quality and processing.

Design, develop, and maintain software solutions. Responsibilities include full-stack development, microservices architecture, CI/CD implementation, and data management.

Design and develop embedded firmware for Honeywell SmartLine industrial transmitters. Lead architecture, coding (C), unit/integration testing, certification alignment, root-cause analysis, and mentor junior engineers. Collaborate with global teams, test, manufacturing, and standards bodies to deliver compliant, production-ready products.

Design, develop, test, and debug scalable software systems; make technical trade-offs; build microservices; work with SQL/NoSQL and cloud platforms; mentor junior developers; provide technical support and participate in recruiting and documentation.

Design and develop complex applications and microservices, configure Kubernetes clusters, optimize CI/CD pipelines, and troubleshoot application bugs and infrastructure issues.

Senior-level developer responsible for designing, developing, and maintaining Microsoft/Oracle-based applications. Work on a Scrum team to plan designs, review requirements, and deliver software using VB.NET, C#, ASP.NET, WinForms, WCF, jQuery, and AJAX. Expected to apply Agile/Scrum practices and collaborate with peers, IT management, and end-users.

Develop and scale web applications, manage large datasets, design APIs, ensure security, and collaborate in agile teams.

The Senior Backend Software Engineer will design and maintain backend services, develop scalable solutions using Java, and collaborate in an Agile environment.

Develop multithreaded C/C++ application software for embedded Linux platforms, primarily for cable TV set-top boxes. Collaborate with distributed teams, apply embedded systems expertise, and deliver solutions aligned with cable industry standards.

The Senior Software Engineer will design, develop, and maintain software solutions, manage the entire development lifecycle, and collaborate with teams to enhance features and performance.