Top Senior Software Engineer Jobs in Philadelphia, PA

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.

Develop and manage mission-critical infrastructure services for cloud development and testing. Build Python backend services, APIs, automation, virtual machine environments, reservation systems, reporting tools, and resilient test frameworks. Improve reliability, scalability, deployment performance, and observability across physical and virtual infrastructure. Provide technical leadership and mentorship while collaborating with global Development and SRE teams.

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.

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.

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.

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.

Develop and maintain complex full-stack web applications using React and Node.js. Lead software through the full SDLC, from requirements and system design through deployment and maintenance. Build accessible, performant client-side applications, micro-frontends, and services; integrate frontend and backend components; and ensure quality through continuous integration, code reviews, and automated testing. Collaborate with Product, UX, engineering teams, and healthcare-domain professionals using Agile delivery practices.

Develop and maintain complex full-stack web applications using React and Node.js. Collaborate with Product, UX, and engineering teams to deliver accessible, scalable, secure applications across monoliths, micro-frontends, and services. Lead work through the full SDLC, including requirements, system design, deployment, maintenance, code reviews, continuous integration, and automated testing.

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.

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.

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.

Design and deliver secure, scalable cloud-native software in agile teams. Shape architecture and technical direction, establish engineering standards, mentor colleagues, collaborate directly with public-sector customers, and solve complex technical problems. The role requires hands-on development, modern engineering practices including CI/CD and DevSecOps, and experience with cloud, containers, and production systems in complex environments.

Design, develop, test, debug, and maintain production-quality software applications and cloud services. Make technical trade-offs involving scalability, reliability, performance, and security; build RESTful APIs; support customer issues; and work in continuous integration and deployment environments. Collaborate with architecture, product, and development teams, contribute to technical research and documentation, review designs and code, lead complex initiatives, and mentor junior developers.

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

Build and enhance FinTech alternative-investment platforms across the full application stack. Develop Angular and backend solutions, REST APIs, and event-driven microservices using Node.js and related technologies. Participate in design meetings and Agile ceremonies, collaborate with product managers, testers, sales, support, and third-party API teams, and apply AI-assisted development workflows, system design, cybersecurity practices, TDD, and continuous delivery.

Design, develop, test, and deploy scalable Salesforce solutions and integrations (including MuleSoft). Perform Salesforce administration, support, troubleshooting, and performance monitoring. Mentor junior developers, collaborate with stakeholders, and drive continuous improvement and automation within the CRM environment.

Design, develop, test, release, and maintain scalable full-stack SaaS applications, APIs, integrations, backend services, and data-access components. Guide architecture and technical decisions, diagnose complex production issues, and improve security, reliability, performance, and maintainability. Use AI-assisted and agentic tools responsibly, collaborate across engineering and business teams, and mentor developers. The role owns software through the full lifecycle, from discovery and implementation to production support and continuous improvement.

Lead database and application migration projects using Golang and PostgreSQL. Define migration strategy, ensure data integrity and security, coordinate cross-functional teams, perform testing and optimization, document processes, and provide technical support during and after migrations.

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, develop, and own full-stack digital applications using .NET and Angular. Lead partner integrations and insurance product capabilities, build secure cloud-native solutions on Microsoft Azure, and deliver reliable customer-facing experiences. Collaborate with product, design, and business stakeholders; mentor engineers; and promote engineering excellence through code reviews, automated testing, secure coding, and AI-assisted development tools.

Design, implement, and deploy real-time manipulation pipelines for multi-DOF arms on legged robots. Develop task and motion planning, grasping, control, and simulation workflows, debug across simulation and hardware, collaborate with cross-functional teams, and own performance from architecture through hardware validation.

Design, implement, and optimize SLAM, localization, and computer vision pipelines for real robots. Fuse multi-sensor data (cameras, IMUs, lidars), build estimation algorithms, evaluate performance on real-world data, and produce production-quality, well-tested code integrated with ROS/ROS2. Collaborate with controls and planning teams and contribute to datasets, tooling, and evaluation frameworks.

Senior-level developer responsible for designing, developing, and maintaining Microsoft/Oracle-based applications. Work on a Scrum team to plan designs, review requirements, and deliver software using VB.NET, C#, ASP.NET, WinForms, WCF, jQuery, and AJAX. Expected to apply Agile/Scrum practices and collaborate with peers, IT management, and end-users.