Top Software Engineer Jobs in Philadelphia, PA

Lead backend engineering modernization efforts by designing scalable microservices and REST APIs, migrating systems to cloud architectures, optimizing databases, maintaining CI/CD pipelines, and ensuring system security, availability, and reliability. Mentor developers, guide technical strategy, collaborate cross-functionally, and support infrastructure and domain management. The role requires strong C# and .NET expertise, cloud experience, software architecture knowledge, and backend development leadership.

Build and lead full-stack applications using React, Node.js, and REST services. Design APIs and databases, optimize frontend performance, uphold testing and CI/CD practices, and improve observability, scalability, security, and maintainability. Collaborate with product, design, data science, medical, and security teams. Mentor engineers, document technical decisions, and advance secure AI-assisted development workflows.

Build and operate infrastructure for evaluating coding agents and language models. Own end-to-end features across data models, APIs, background workers, and user interfaces; run sandboxed agent trials; develop scoring and task-quality systems; integrate models and benchmarks; optimize performance, concurrency, migrations, and reliability; and review code. The role requires independent ownership of production backend systems and hands-on LLM evaluation experience.

Develop cloud security platform and product services using Golang and Python in a high-traffic environment. Own features from requirements through release, build modular infrastructure, integrate components, solve technical challenges, and collaborate with cloud, product, data science, and DevOps teams. The role also involves designing threat detection solutions, working with distributed systems and NoSQL databases, mentoring junior engineers, and promoting engineering best practices.

Leads architecture, development, deployment, and operations for Python backend services supporting internal penetration testing. Designs scalable ETL pipelines, distributed workflows, relational data models, SQL queries, GraphQL APIs, and graph-based attack-path data systems. Owns reliability, observability, performance, and production operations while coordinating cross-team initiatives. Provides technical direction, writes architecture documentation, mentors engineers, and partners with frontend, product, data, and attack teams to deliver customer-facing security results.

Build and maintain Komodo Health’s WordPress marketing site, including custom themes, blocks, templates, plugins, landing pages, performance, accessibility, security, SEO, tracking, and consent. Develop Python or JavaScript agentic workflows using LLM APIs, connect them to marketing and revenue systems, and establish production standards for testing, monitoring, documentation, secrets, and human review. Collaborate with marketing teams to scope technical work and manage the website engineering backlog.

Implement, maintain, and troubleshoot Adobe Experience Cloud solutions, including Customer Journey Analytics, Journey Optimizer, Target, and Data Collection. Configure data connections, data views, identity stitching, data streams, tracking, experimentation, personalization, and cross-channel reporting. Integrate online and offline data sources, validate measurement accuracy, document configurations, and collaborate with technical, analytics, and marketing stakeholders. Full-time coverage aligned with Mountain Time is preferred.

Develops, configures, tests, documents, deploys, and supports business applications for clinical trial operations. The role involves C# and ASP.NET MVC development, database object design, defect resolution, site support, source control, change management, and collaboration with project and solution teams. Work must follow software development standards, SLAs, SOPs, Good Clinical Practice, 21 CFR Part 11, and other regulatory requirements.

Senior full-stack engineer responsible for designing, building, testing, deploying, and supporting scalable lead capture, routing, tracking, and advisor-facing platform features. The role is approximately 70% frontend and 30% backend, using NestJS, Node.js, React, AWS, databases, event-driven architectures, CI/CD, automated testing, analytics, observability, and LLM-backed functionality. Responsibilities include architecture, production troubleshooting, performance optimization, technical planning, code reviews, documentation, and mentoring.

Provides technical leadership and hands-on engineering for Entellitrak-based Defense Health IT systems. Develops and integrates Java/JEE components, interfaces, APIs, database schemas, and web services; troubleshoots production issues; supports testing, releases, deployments, and documentation. Maintains Microsoft SQL Server environments and ensures compliance with DoD cybersecurity, configuration-management, RMF, STIG, NIST, and testing requirements. Supports Agile delivery, authentication modernization, vulnerability remediation, incident response, and occasional after-hours production operations.