Top Software Engineer Jobs in Philadelphia, PA

Own the reliability, performance, architecture, and platform integrations of Mattermost’s React Native mobile application. Improve behavior in disconnected and constrained environments, synchronization, recovery, crash-free performance, observability, native iOS and Android capabilities, secure storage, notifications, background execution, and enterprise distribution. Mentor engineers, guide architectural decisions, debug production issues, support security and compliance requirements, and contribute to the open-source codebase.

Lead LaunchDarkly’s Data Platform engineering team, overseeing high-throughput ingestion, streaming and batch pipelines, analytical data stores, reliability, observability, incident response, and operational excellence. Partner with product and engineering teams on roadmap planning, technical tradeoffs, and delivery. Coach engineers, manage performance and career growth, establish collaborative team practices, and participate in hiring.

Build core digital banking experiences for bank administrators and customers, including user flows, robust APIs, and third-party integrations. Design and implement scalable backend services using microservice architecture and domain-driven design. Write clean, documented, tested code with strong error handling, logging, and performance considerations. Contribute to system design, architectural decisions, code reviews, and technical guidance within an Agile Scrum environment.

Leads end-to-end modernization from a monolith to microservices, including legacy analysis, architecture, estimation, data migration, deployment, and production support. Guides .NET services, databases, messaging, containerization, and frontend integrations. Acts as the technical escalation point for complex issues while improving Jira tracking, estimation accuracy, QA collaboration, release predictability, and engineering processes. Manages and develops the team through one-on-ones, performance reviews, feedback, and career-focused objectives.

Paid technology internship providing exposure to enterprise systems, data management, infrastructure, digital technologies, security, networking, web technologies, and business applications. Interns may contribute across areas including enterprise architecture, corporate systems, quality and vendor management, retirement services, wealth management, and employee benefits. The role seeks students with technical coursework, analytical ability, communication skills, collaboration, and eagerness to learn.

Develop enterprise software solutions using Microsoft Power Platform, .NET, React.js, Azure services, and relational databases. Work within Agile, Scrum, and SAFe teams, participating in PI Planning, iteration planning, system demos, and Inspect & Adapt events. Strong Power Apps canvas expertise is essential, alongside Power Automate, Azure DevOps, SQL, and low-code/no-code development. SharePoint experience is preferred, while AI-assisted development using Copilot or Vibe coding is a plus.

Own and evolve the Salesforce platform through administration, security and user management, data governance, reporting, Flow automation, CPQ configuration, integrations, and platform documentation. Partner with Sales, Finance, and Operations to translate business needs into scalable solutions. Provide light Apex and Lightning Web Components development when declarative tools are insufficient, while maintaining platform governance and best practices.

Design, build, and operate scalable APIs and event-driven backend services using TypeScript, Node.js, Python, Kafka, and PostgreSQL. Develop infrastructure as code and CI/CD pipelines, troubleshoot production systems, and participate in on-call support. Provide technical leadership through architecture reviews, API and event standards, code reviews, mentoring, and cross-team guidance. Help improve engineering quality, reliability, scalability, development tooling, and adoption of AI-assisted development practices.

Own the architecture, product direction, and hands-on development of Phoenix’s payments infrastructure across processors, gateways, vaults, tokenization, wallets, routing, authorization, disputes, fraud, reconciliation, and reliability. Lead merchant and processor integrations, improve approval rates, manage payment-method portability, maintain PCI-compliant systems, and own incident response. The role combines principal engineering with payments product ownership, requiring direct customer engagement, roadmap decisions, technical design, coding, and accountability for business outcomes.

Lead a four-week project to launch a production inventory table and artifact-detail experience for an AI security platform. Build frontend-heavy, data-dense workflows with large tables, filtering, paging, and resilient state management. Contribute across TypeScript, React, Next.js, Node.js, Postgres, REST APIs, and background jobs. Partner with technical and design leadership, review code, and potentially develop deduplication, reporting, and knowledge-graph features.