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System One

Lead API Developer

Pittsburgh, PA, United States

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Job details

Apply by: Feb 4, 2027
Posting language: English
Posted: Nov 6, 2026

Original job description

Job Title: Lead API Developer Location: Pittsburgh, PA | Cleveland, OH | Dallas, TX Type: Full-time Work Model: Hybrid – onsite and remote

We are seeking a Lead API Developer with strong expertise in Java, Spring Boot, and Microservices to lead the design, development, and support of enterprise-scale APIs and backend services. This role will provide technical leadership, mentor developers, and drive best practices across API development initiatives.

Responsibilities

Design, develop, and maintain scalable APIs, microservices, and backend applications
Lead API development efforts and provide technical mentorship to team members
Build and support Java-based RESTful services integrated with internal and external systems
Drive API standards, architecture decisions, and development best practices
Participate in solution design, code reviews, and technical planning
Create technical designs and translate business requirements into scalable solutions
Support release planning, change management, production deployments, and post-release validation
Troubleshoot and optimize applications across multiple environments
Collaborate with business, product, and technical stakeholders in an Agile environment

Requirements

10+ years of Java/J2EE development experience
Strong experience with Spring Boot and Microservices Architecture
8+ years of RESTful and/or SOAP web services development
Experience with REST APIs, XML, JSON, and Swagger/OpenAPI
5+ years of Angular, JavaScript, HTML, and CSS
5+ years of GitHub, Jenkins, and CI/CD pipeline experience
Experience writing and maintaining unit tests
Experience with Agile software development methodologies
Experience with Release Management and production deployment

Preferred Qualifications

Experience with API management platforms such as Apigee
Knowledge of DevOps and deployment automation tools
Experience supporting large-scale enterprise applications
Strong communication and leadership skills with the ability to work across cross-functional teams

System One, and its subsidiaries including 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.

#LI- Ref: #404-IT Pittsburgh

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More about this job

Skills

Oracle Java
Spring Boot
Microservices
Leadership
API development
Change management
Troubleshoot
Agile
Microservices Architecture
JavaScript
HTML
CSS
GitHub
Jenkins
CI/CD
DevOps
Communication skills

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