Top 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.

Support program-level software quality engineering for BDS Vertical Lift: define processes, perform audits, plan/verify test activities, ensure test integrity, manage supplier software performance, support configuration management, drive corrective actions, and report quality metrics to reduce risk and improve software quality.

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

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.

As a Software Engineer at Oncora, you will develop and maintain our data platform, integrating various data sources, optimizing data infrastructure, and enhancing de-identification capabilities for machine learning and clinical research.

Build and maintain performant, well-tested front-end UI for an AdTech platform using JavaScript/TypeScript and React. Integrate with internal/external APIs, collaborate with product and design, decompose features, estimate work, and improve systems and processes to ensure reliability and scalability.

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

Join an agile delivery team to design, build and test secure, scalable software services using cloud-native technologies. Contribute to prototyping, code reviews, and customer collaboration while learning from experienced engineers and applying modern frameworks, containers, and CI/CD practices.

Develop and maintain Salesforce Service Cloud solutions using Apex and Lightning Web Components. Collaborate with product owners, architects, and DevOps to design, integrate, test, and deploy scalable, secure software. Participate in Agile processes, CI/CD pipelines, troubleshooting, and continuous improvement to deliver high-quality applications and integrations.

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

Develop and operate core data platforms, improve frontend architecture, add functionalities to APIs, integrate data sources, and provide feedback to the team.

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

As a Lead Software Engineer, you will develop and enhance applications, collaborate closely with team members, and apply advanced technical expertise to deliver innovative solutions and products.

The Associate Software Engineer supports design, development, and maintenance of applications and automation tools for the Philadelphia Department of Prisons, focusing on enhancing departmental operations.

Entry-level Software Engineer supporting design, development, testing, and maintenance of Java-based enterprise applications. Work with senior engineers, QA, and stakeholders to implement features, write unit tests, troubleshoot defects, follow Agile/SDLC practices, use source control and DevOps tools, and learn cloud/CI/CD and application support under guidance.

Design, develop, and maintain backend services and RESTful APIs for the Oseries product. Manage authentication (OAuth/JWT), cloud and on-prem environments, data configurations, reporting, and CI/CD reliability. Write SQL, unit/integration tests (JUnit5, Mockito), troubleshoot production/QA issues, and support deployments and automation (AWS Lambda, GitHub Actions). Participate in Agile ceremonies and use Postman, Swagger, and Jira for testing and delivery.

Design, implement, and lead medium-to-complex platform projects end-to-end. Make architectural decisions, build APIs and backend systems, ensure reliability, observability, and high availability; write automated tests; triage bugs; mentor junior engineers; collaborate with product, design, and customers; and drive continuous improvement initiatives.

Lead AppOps Engineer responsible for end-to-end application runtime health and reliability. Own production reliability, incident response, release/change operations, observability, automation, capacity and DR planning, security-by-default, runbook and SOP development, and mentor AppOps engineers while partnering with Engineering, CloudOps, Security, and Compliance.

Design, build, test, and maintain cloud-native enterprise software and microservices on Azure. Integrate LLMs and RAG/GraphRAG solutions, apply AI frameworks and prompt engineering, use Kubernetes/Docker and CI/CD, work in Agile teams, mentor engineers, and support production incidents and architecture decisions.

Design, build, and operate resilient distributed integration services and APIs using Java and Node.js. Manage Kong API gateway via declarative YAML and CI/CD, implement FHIR data facades, integrate with REST/gRPC/messaging systems, own API lifecycle (OpenAPI, tests, versioning), and apply security (OAuth2/OIDC, mTLS) and cloud/container ops (Docker/Kubernetes).

Join Perpay as a Software Engineering New Grad. Contribute to coding, testing, and releasing features, while learning in a supportive and collaborative environment. Ideal for candidates with internships in full-stack development interested in a mission-driven role.

Design, develop, test, debug, and deliver software applications while making technical trade-offs for scalability and performance. Provide technical/customer support, document implementations, collaborate on priorities, review code, mentor junior developers, and follow team processes and best practices.

Design, build, and operate scalable backend integration services and APIs. Configure and manage Kong API Gateway via declarative YAML and CI/CD. Implement FHIR data facades, backend integrations (REST/gRPC/messaging), OpenAPI-driven lifecycle, automated testing, and secure service-to-service auth (OAuth2/OIDC). Deploy and operate containerized cloud services with observability and reliability patterns.