Lead API Developer
Pittsburgh, Pennsylvania
Experience: 5
Category: Information Technology
Contractor Work Model: Hybrid
Brand: System One
Job ID: 381273
Date Posted: 09/30/2026
Shortcut: http://jobs.systemone.com/r0lkOU
Job Title: Lead API Developer
Location: Pittsburgh, Pennsylvania, United States
Type: Permanent Full Time
Work Model: Hybrid – onsite and remote
Responsibilities
- Design, develop, and maintain high-performance APIs that power the system.
- Collaborate with cross-functional teams to understand requirements, architect solutions, and ensure scalability, reliability, and security of APIs.
- Mentor junior developers, lead technical discussions, and promote best practices and standards.
- Lead and manage a team of API developers, providing technical guidance and mentorship.
- Drive API standards, best practices, and service improvements.
- Develop and unit test Java-based RESTful services integrating with external client systems.
- Review design documents and provide feedback on architecture, approach, and estimates.
- Create technical designs for new systems and enhancements to existing systems.
- Translate detailed requirements into functional system designs.
- Participate in and drive Release Planning activities.
- Create and manage Change Requests (CRs) for deployments and production releases.
- Support and drive end-to-end release execution, including deployment and post-release validation.
- Troubleshoot, optimize, and support applications across environments.
- Work with DevOps tools such as Jenkins, uDeploy, and Git.
- Knowledge and hands-on experience with API management platforms such as Apigee.
- Research and recommend libraries, tools, and frameworks to accelerate development.
- Collaborate closely with internal and external business, design, and technical stakeholders.
- Prioritize work, meet deadlines, and manage multiple initiatives effectively.
- Establish and maintain strong working relationships with clients, team members, and cross-functional partners.
- Communicate effectively across diverse teams and understand technical challenges.
Requirements
- At least 10+ years overall experience in Java/J2EE development with REST API, Spring Boot, Angular, XML, JSON, Swagger.
- 8+ years of RESTful or SOAP web services.
- 5+ years Angular, CSS, JavaScript, HTML.
- 5+ years of experience with GitHub, Jenkins, and CI/CD servers.
- Experience writing unit tests for JavaScript code.
- Experience using Agile methodologies for application development.
- Experienced with Release Management.
- Ability to participate in and drive Release Planning activities.
- Create and manage Change Requests (CRs) for deployments and production releases.
System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.
System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.
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