Top Software Engineer Jobs in Philadelphia, PA

Build and ship full-stack software for CoreWeave’s internal data infrastructure and operational applications. Develop TypeScript, React, and Next.js frontends; Python services on Kubernetes; SQL queries and data models; and AI-enabled interfaces such as text-to-SQL tools, retrieval systems, and agents. Own scoped features through production, including testing and post-release fixes, while collaborating with senior engineers and internal users.

Design, develop, test, and maintain full-stack software applications for a secure financial-services compliance platform. Responsibilities include building database objects and data pipelines, optimizing performance across application layers, developing server-side web features, testing and debugging, participating in code reviews and agile ceremonies, documenting systems, and following secure coding and regulatory compliance practices.

Design, architect, build, and deliver core identity and access management services for MongoDB Atlas. Lead complex technical projects from specification through delivery, improve engineering practices and code quality, define priorities, and mentor team members. The role focuses on authentication, authorization, backend systems, and secure customer-facing IAM features while supporting FedRAMP requirements.

Develop and maintain scalable full-stack applications using ReactJS, Java Spring Boot APIs, Microsoft SQL Server, and IIS. Build responsive front-end experiences, optimize backend services and database queries, and translate business requirements into technical solutions. Collaborate with product managers, QA, UX, DevOps, vendors, and engineering teams to deliver reliable, maintainable software supporting oncology pathways and clinical workflows.

Develop and maintain scalable full-stack applications using ReactJS and Java Spring Boot APIs. Build RESTful backend services, optimize Microsoft SQL Server queries and schemas, and ensure application performance, reliability, and data integrity. Translate business requirements into technical solutions, write maintainable code, and collaborate with product, QA, UX, DevOps, vendors, and engineering teams within an agile software development environment.

Build and maintain metadata capture, transformation, and delivery pipelines for a data management platform. Develop backend services with Python, Java, and Node.js; integrate relational databases and REST APIs; implement Terraform infrastructure; and support GitLab CI/CD. Optimize distributed systems for performance, reliability, scalability, and secure asynchronous processing. Write automated tests, troubleshoot services using operational metrics, and contribute to AI/ML metadata pipelines, search, data lake, and LLM-powered initiatives.

Build and operate full-stack applications and AI-facing features for CoreWeave’s internal data platform. Responsibilities include developing TypeScript, React, Next.js, and Python services; designing APIs and relational data models; integrating analytical data platforms; deploying on Kubernetes; and owning production reliability, testing, observability, and on-call support. The role also involves collaborating with non-engineers to define processes, shipping LLM-backed applications, and evaluating AI output quality.

Designs and deploys enterprise-scale software, AI-powered data solutions, cloud databases, and automated ETL/ELT pipelines. Builds distributed data platforms using Spark, Scala, Python, and Java; develops SQL procedures; manages Azure data technologies; and implements CI/CD, DevOps automation, testing, performance tuning, and code reviews. Collaborates with engineering and architecture teams in an agile cloud environment while applying responsible AI practices.

Provides hands-on technical leadership for Comcast’s Enterprise Decision Engine. Designs, develops, and operates scalable Java and Spring platform services, drives architectural evolution, translates complex requirements into technical solutions, and leads cross-team initiatives. Responsibilities include technical design, coding, reviews, mentoring, documentation, reliability and performance improvements, deployment support, incident response, and adoption of modern engineering practices.

Design, develop, and maintain backend APIs including payment and subscription systems, collaborate on B2B solutions, ensure performance and scalability.

Senior technical developer responsible for administering, configuring, developing, and troubleshooting OSIsoft PI/AVEVA PI System environments. The role integrates laboratory and manufacturing equipment, manages PI tags and data collection, assesses system compatibility, resolves networking and connectivity issues, and supports documentation, testing, change control, and validation in GMP-regulated environments. The developer collaborates with IT, engineering, laboratory, and manufacturing stakeholders to maintain reliable data integration.

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.

Develop and maintain ecommerce software across the full software development lifecycle. Design microservices and event-driven systems, build customer-facing features, improve existing applications, troubleshoot production issues, and collaborate with architects, developers, QA, business analysts, and end users. The role requires Python or Golang, RESTful services, asynchronous processing, data modeling, web technologies, databases, testing, cloud platforms, and professional experience using AI coding agents.

Develop and evolve Nuuly’s stable, scalable services platform. Responsibilities include designing and delivering features, collaborating with product and QA teams, contributing to architecture and roadmaps, supporting deployments, and participating in technical decision-making. The role requires JVM development, cloud and Kubernetes integration, streaming and distributed-systems knowledge, testing expertise, and the ability to provide technical leadership and mentorship.

Performs manual and automated end-to-end testing for iOS and web applications. Designs and maintains WebdriverIO automation scripts, executes functional, regression, and integration tests, reports and tracks defects, and analyzes quality results. Collaborates with developers, product managers, and cross-functional teams on test strategies, documentation, code reviews, and test planning. Supports CI/CD automation integration and continuously improves QA tools, frameworks, and processes.

Develop, test, document, deploy, and maintain software applications using engineering best practices. Collaborate with Scrum team members, developers, quality engineers, operations, and support engineers to deliver reliable solutions. Participate in software development planning, design discussions, process improvement, continuous integration and deployment, automation, and legacy code modernization. Apply object-oriented design, data structures, algorithms, RESTful services, unit testing, and Agile development practices while protecting confidential information.

Build and maintain developer-facing tools and APIs for MongoDB Atlas and Compass. Work full-stack on customer-facing UIs and backend services, design scalable, highly available web applications, collaborate cross-functionally, troubleshoot distributed systems, and improve performance and developer experience.

Design, develop, test, deploy, and support enterprise applications and databases. Translate business requirements into maintainable code, integrate third-party solutions, participate in design and code reviews, resolve complex technical issues, mentor junior staff, and ensure compliance with IT and security policies.

Lead architecture and implementation of large-scale, carrier-grade distributed network software. Drive design, development, validation, deployment, and operational support; mentor engineers; troubleshoot production incidents; collaborate with QA, vendors, and partners; and monitor performance, scalability, and security.

Designs, develops, integrates, customizes, updates, and releases software applications. Responsibilities include requirements analysis, bug triage, complex troubleshooting, QA collaboration, technical mentoring, user training, and researching industry trends. The role requires independent judgment, punctual attendance, and flexibility to work nights, weekends, and variable schedules.

Develop and execute software integration and test plans for space mission systems. Responsibilities include requirements verification, automated test scripting, software integration, defect troubleshooting, performance analysis, test execution, and technical communication. The role also involves building full-stack features, writing unit and integration tests, supporting CI/CD and cloud deployments, reviewing code, and mentoring junior engineers.

Develop and deploy full-stack software for mission-critical space systems. Responsibilities include implementing features independently, writing unit and integration tests, participating in code reviews, troubleshooting applications, working with RESTful APIs and microservices, deploying to cloud platforms, supporting CI/CD pipelines, collaborating cross-functionally, and mentoring junior engineers.

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.

Performs manual and automated software, hardware, and firmware testing across smoke, regression, integration, and end-to-end scenarios. Creates test plans, procedures, and cases; analyzes results; documents defects; reviews requirements and designs; collaborates with developers; and manages testing timelines and documentation. The role is full-time and on-site, with up to 25% customer travel.

Designs, develops, tests, implements, and supports enterprise applications and services. Partners with stakeholders, product owners, architects, vendors, and distributed engineering teams to deliver scalable, secure solutions. Responsibilities include technical analysis, architecture discussions, API and systems integration, production troubleshooting, solution evaluation, technical presentations, and mentoring engineers. The role also contributes to modernization, cloud migration, continuous improvement, and agile delivery.