Top Senior Software Engineer Jobs in Philadelphia, PA

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.

Provide technical leadership and hands-on development for the Nexity platform. Lead distributed engineering teams, establish architecture and coding standards, run Agile delivery, mentor engineers, drive secure, scalable cloud-based solutions using Azure/.NET and modern web stacks, leverage AI-assisted development tools, and collaborate with product, architecture, QA, and infrastructure to meet business objectives.

Lead database and application migration projects using Golang and PostgreSQL. Define migration strategy, ensure data integrity and security, coordinate cross-functional teams, perform testing and optimization, document processes, and provide technical support during and after migrations.

Lead design and implement DevOps and test automation platforms to improve software delivery lifecycle. Develop cloud-native services, IaC, CI/CD pipelines, monitoring, and automation; document architectures and optimize delivery pipelines across agile teams for SaaS tax solutions.

Design, develop, test, and implement navigation software and algorithms for sensitive navigation sensors. Collaborate with interdisciplinary teams, perform numerical analysis and optimization, deploy software in POSIX and real-time environments, and support lab and field/at-sea testing. Lead responsibilities and documentation expected for higher-level appointments.

Design, develop, and deliver high-quality, secure production software. Lead feature design and implementation, author technical documentation, perform code reviews, troubleshoot production issues, support on-call escalations, and collaborate with cross-functional teams to improve scalability, reliability, and security.

Design and deliver secure, scalable cloud-native software in small agile teams. Influence architecture and technical direction, set engineering standards, mentor engineers, and work directly with customers to solve complex problems using modern cloud, CI/CD, and DevSecOps practices.

Senior backend-focused engineer responsible for designing, building, and supporting high-scale Java/Spring Boot microservices, driving CI/CD and DevOps practices, mentoring teammates, implementing automated tests, troubleshooting performance issues, and contributing to pipeline automation and continuous improvement.

The Senior Software Engineer will design and optimize platform services, enhance automation, collaborate with teams, and ensure robust architecture in a cloud environment.

Lead design and development of Windows desktop applications, ensuring best practices in architecture, accessibility, and performance while collaborating with cross-functional teams.

Design, implement, and maintain high-quality C++ (C++17/20) robotics software. Improve build systems (CMake), configure GitLab CI/CD, maintain Linux development environments, write unit/integration tests, profile and optimize performance, collaborate with controls and hardware engineers, participate in code reviews, and support tooling and CI infrastructure to keep development fast and reliable.

Designs, researches, and implements complex cross-system software; translates customer requirements into solutions; develops and optimizes data models and storage; mentors junior engineers; performs code reviews, TDD, and complex bug fixes; operates in Agile/Waterfall environments and promotes development best practices.

Design, develop, and maintain complex cross-system software; translate user requirements into solutions; implement best practices and development processes; resolve complex technical issues; mentor and train junior engineers; design complex data models and complete difficult bug fixes; participate in specifications, code reviews, and collaborate across teams in various development environments.

Build and own platform APIs and internal tooling for real-time EHR sync and FHIR ingestion. Maintain ingestion pipelines, reliability, normalization, framework upgrades, CI, and observability. Diagnose production issues, ship durable fixes, and take end-to-end ownership of production systems and on-call responsibilities.

Build and own the platform API and internal tooling for real-time EHR sync, FHIR ingestion, and vocabulary normalization. Implement and maintain ingestion pipelines, ensure sync reliability, perform framework upgrades and developer tooling, diagnose production issues, and maintain observability and correctness. Ship production features and own on-call responsibilities for platform subsystems.

The Senior Software Engineer develops software for surgical navigation products, leading projects and ensuring solutions are efficient and scalable.

Design and develop software for medical devices, collaborate with product and UI/UX teams, and ensure project adherence to quality standards.

The Senior Software Engineer leads software development for surgical navigation products, develops prototypes, ensures performance and scalability, and works with a cross-functional engineering team using agile methodologies.

The Senior Software Engineer will develop medical image processing algorithms, manage project timelines, and ensure compliance with medical software standards while collaborating in a team environment.

Design, develop, and maintain embedded firmware for optical networking products. Implement new features, resolve legacy bugs, collaborate with hardware, validation, and test teams, and ensure accurate firmware documentation. Coach junior engineers, lead code reviews, support pre/post sales and field engineers, and apply Agile/CI/CD/DevOps practices for product delivery.

Lead end-to-end delivery of web projects: discovery, architecture, implementation, deployment, and post-launch support. Act as technical lead and client contact, write front- and back-end code, perform reviews, mentor engineers, use AI-assisted workflows, manage scope/timelines, and identify risks early.

Lead design and implementation of cloud-native, event-driven logistics systems. Provide technical leadership, architect AWS services, own IaC, design APIs and EDI integrations, mentor engineers, and ensure scalable, real-time processing to support growth.

The Senior Software Engineer will build and maintain foundational services and SDKs, optimize functionality, and enhance user experience through collaboration and system design.

Classic automation test engineer responsible for building and configuring automated test infrastructure within sprints. Requires coding (Java or Python), strong familiarity with Gherkin/Cucumber, front-end or back-end automation, performance/load testing, and tools like Selenium, Appium, TestNG/JUnit and Spring. Role is roughly 60% coding and 40% test automation setup. 12+ month contract; good communication skills required.