Top Software Engineer Jobs in Philadelphia, PA

Own backend performance and scalability improvements for a mature Java-based Athlete Management System. Diagnose bottlenecks across APIs, databases, calculations, and background jobs; improve data access, asynchronous processing, observability, containerization, and reliability. Develop technical plans, drive changes through production, collaborate with the Data Platform team, review architecture, mentor engineers, and participate in on-call support.

Designs, develops, and maintains complex ServiceNow applications, workflows, integrations, and portals across ITSM, ITOM, HRSD, and CSM. The role provides technical architecture, troubleshooting, performance optimization, deployment governance, documentation, code reviews, and mentorship. It requires collaboration with technical and business stakeholders in an Agile environment, management of REST and SOAP integrations, adherence to security and change-control standards, and participation as a technical subject matter expert.

Lead design and delivery of enhancements to a next-generation AI agent platform. Own large features and infrastructure, mentor engineers, set technical standards, drive cross-team initiatives, improve reliability and SLOs, and influence product and process decisions to scale systems supporting millions of interactions.

Develop and maintain scalable, secure .NET and Angular web applications for a career and college planning SaaS platform. Collaborate with product managers, QA, and stakeholders to translate requirements into technical solutions, troubleshoot complex issues, optimize performance, and adopt relevant technologies. The role requires full-stack expertise across Angular, C#, ASP.NET, MVC, REST APIs, .NET Core, and SQL, along with strong communication and ownership in a remote environment.

Design and implement backend features in Go, build data pipelines and REST APIs, work with PostgreSQL and AWS, contribute to scalable system design, and optionally develop React.js user-facing features while collaborating in a fast-paced AI-focused startup.

Build and ship high-quality product features, design robust architectures, lead technical execution, collaborate on product roadmap with leadership and GTM, and take projects end-to-end from planning through CI/CD and productionization.

As a founding full-stack engineer, design, build, and deploy core backend services, oracle/watchtower infrastructure, and borrower-facing applications. Integrate Bitcoin transactions, PSBTs, and Discreet Log Contracts, manage SQL/NoSQL databases, contribute to architecture decisions, and wear multiple hats in a fast-paced, early-stage environment.

Build, maintain, and deploy a high-volume, fault-tolerant observability platform. Architect and develop OpenTelemetry-based systems, implement services in Go (concurrency/gRPC), work with ClickHouse/Postgres, Kafka/Redis streaming, and containerized deployments on Kubernetes/Docker. Evaluate new tools and improve platform reliability and performance.

Full-stack product engineer (backend-focused) who builds scalable NodeJS services, crafts React/TypeScript UIs, designs APIs, writes well-tested code, optimizes PostgreSQL queries and data pipelines, improves observability, and contributes to architecture and engineering practices for a fintech platform.

Architect and refine scalable cloud infrastructure software for enterprise and internet-scale environments. Responsibilities include developing robust software, designing systems supporting 1,000+ nodes, optimizing performance, and collaborating with distributed technical teams in agile environments.