Java Developer

Job: 2091369 Job Description: Senior Java Developer Credit Card Processing Systems Location: Onsite Hopkins, Minnesota Contract Type: Hourly Contractor (Non-Exempt) Duration: 12-Month Contract Hours: Full-Time (40 hoursweek) Team: Credit Card Processing Systems Program Team: Application Development Job Overview: A leading financial institution is seeking a Senior Java Developer to support its Credit Card Processing Systems team. This role is part of a strategic modernization initiative requiring onshore engineering support for real-time data streaming, automation, and validation tasks. The ideal candidate will have strong experience in Java development, Kafka-based streaming architectures, and automation testing, with the ability to collaborate across infrastructure and security teams. Key Responsibilities: Design, develop, and deploy real-time data streaming pipelines using Kafka, Flink, or similar technologies. Develop and optimize high-throughput, low-latency streaming workflows for financial applications. Design, develop, and maintain Java-based microservices and automation frameworks. Integrate Real Agentic AI models into streaming architectures to enable intelligent, autonomous decision-making. Implement and manage CICD pipelines, infrastructure automation, and Liquibase for database version control. Collaborate with infrastructure teams on API security, container orchestration, and observability. Ensure compliance with banking industry standards for data governance, security, and reliability. Provide production support and post-deployment assistance for streaming and microservices systems. Monitor and troubleshoot production streaming systems to ensure high availability and performance. Mentor junior engineers and contribute to the development of best practices and reusable frameworks. Required Qualifications: Bachelors or Masters degree in Computer Science, Engineering, or a related field. 5 years of experience in Java and Spring Boot development. 3 years of hands-on experience with Kafka, Flink, or similar streaming platforms. Proven expertise in managing and scaling complex streaming workflows. Experience with Selenium, RestAssured, Cucumber (BDD), and CICD tools. Solid understanding of distributed systems, event-driven architectures, and stream processing patterns. Experience with Liquibase or similar tools for database change management. Preferred Skills: Experience with Real Agentic AI frameworks or architectures. Familiarity with API Gateways, Service Mesh (ISTIO), OAuth2, JWT, and mTLS. Knowledge of Oracle, Postgres, Cassandra, MongoDB, Kafka, and SQL Server. Experience with Docker, Kubernetes, Splunk, Datadog, and cloud platforms like AWS or Azure. Strong communication and leadership skills with a collaborative mindset. EEO Employer Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at email protected or 844-463-6178. Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership coursesbooksseminars once you have 6 months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our Welcome Packet as well, which an Apex team member can provide. Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership coursesbooksseminars once you have 6 months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our Welcome Packet as well, which an Apex team member can provide. Apex Systems is part of the Commercial Segment of ASGN Incorporated. NYSE: ASGN 4400 Cox Road Suite 200 Glen Allen, Virginia 23060 Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at email protected (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Apex Systems.