Full Stack Java/API Developer - Onsite#26-08286 Pittsburgh, PA Charlotte, NC Phoenix, AZ Dallas, TX Birmingham, AL Cleveland, OH Onsite Contract Starts 4/27/2026 Ends 12/31/2026 Job Description Genesis10 is currently seeking a Full Stack Java/API Developer for a contract position with a Major Financial Institution located in Pittsburgh, PA, Cleveland, OH, Birmingham, AL, Dallas, TX, Phoenix, AZ or Charlotte, NC. This is an 8 month contract opportunity. We are seeking a Full Stack Java/API Developer to join a large-scale modernization initiative focused on transforming legacy banking and credit card applications into modern, API-driven solutions. This role will be heavily involved in new development, building microservices and REST APIs from the ground up while contributing across both backend and frontend technologies. The ideal candidate is a hands-on developer who can independently deliver high-quality code, troubleshootplex issues, and contribute throughout the entire software development lifecycle.

Responsibilities:

Design, develop, and support Java-based applications and microservices Build REST APIs from scratch using Spring Boot and modern development frameworks Develop and enhance Angular-based user interfaces Create scalable, maintainable, and high-performing applications Participate in architecture discussions and technical design reviews Develop unit tests and support automated testing efforts Troubleshoot application, API, and database issues Support deployments, release activities, and production environments Collaborate with Architects, Product Owners, and cross-functional teams Follow organizational coding standards and development best practices Participate in modernization projects involving legacy systems and data migration efforts

Requirements:

5 years (Mid-Level) or 8 years (Senior) of software development experience Strong Java 17 experience (Java 21 exposure is a plus) Strong Core Java and J2EE background Experience with Spring Framework and Spring Boot

REST API

development experience Microservices architecture experience Strong SQL skills Experience with MongoDB or Oracle databases Experience creating applications and services from scratch Strong troubleshooting and debugging skills Experience supporting CI/CD and release processes Ability to explain previous projects in detail and demonstrate hands-on development contributions Desired skills: Angular development experience Kafka development experience Banking or financial services experience Credit card processing or rewards platform experience Experience modernizing legacy applications Familiarity with COBOL, DB2, VSAM, or mainframe environments Pay range: $42.44 - $50.44 per hour Only candidates available and ready to work directly as Genesis10 employees will be considered for this position. If you have the described qualifications and are interested in this exciting opportunity, please ! Ranked a Top Staffing Firm in the U.S. by Staffing Industry Analysts for six consecutive years, Genesis10 puts thousands of consultants and employees to work across the United States every year in contract, contract-for-hire, and permanent placement roles. With more than 300 active clients, Genesis10 provides access to many of the Fortune 100 firms and a variety of mid-market organizations across the full spectrum of industry verticals. For contract roles, Genesis10 offers the benefits listed below. If this is a perm-placement opportunity, our recruiter can talk you through the unique benefits offered for that particular client. Benefits of Working with Genesis10: Access to hundreds of clients, most who have been working with Genesis10 for 5-20 years. The opportunity to have a career-home in Genesis10; many of our consultants have been working exclusively with Genesis10 for years. Access to an experienced, caring recruiting team (more than 7 years of experience, on average.) Behavioral Health Platform Medical, Dental, Vision Health Savings Account Voluntary Hospital Indemnity (Critical Illness & Accident) Voluntary Term Life Insurance 401K Sick Pay (for applicable states/municipalities) Commuter Benefits (Dallas, NYC, SF, and Illinois) For multiple years running, Genesis10 has been recognized as a Top Staffing Firm in the U.S., as a Best Company for Work-Life Balance, as a Best Company for Career Growth, for Diversity, and for Leadership, amongst others. To learn more and to view all our available career opportunities, please visit us at our website. Genesis10 is an Equal Opportunity Employer. Candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.