Senior Engineer - Java / Spring Boot / React - Hybrid

Genesis10 is currently seeking a Senior Engineer - Java / Spring Boot / React / Open Systems for a contract position with a Regional Financial Institution located in Columbus, OH. This is a contract, hybrid opportunity. Compensation: $50.00 - $60.00 per hour, W2, based on qualifications Position Overview: This role involves designing, developing, testing, and deploying highly scalable enterprise applications. The ideal candidate will lead the development of full-stack applications, including RESTful APIs, microservices, and responsive React-based user interfaces, translating business requirements into secure and maintainable software solutions. Key Responsibilities: Design, develop, test, deploy, and support highly scalable enterprise applications using Java, Spring Boot, React, and modern open-system technologies Lead the development of full-stack applications, including RESTful APIs, microservices, backend services, and responsive React-based user interfaces Translate business and technical requirements into scalable, maintainable, and secure software solutions Design and implement cloud-ready, distributed, and service-oriented applications Develop high-quality Java applications using Spring Boot, Spring Framework, JPA/Hibernate, and REST APIs Build reusable and maintainable React components and integrate front-end applications with backend APIs Participate in application architecture and technical design activities Lead or contribute to the modernization of legacy applications into open-system, API-driven, and microservices-based architectures Develop unit, integration, and automated tests to ensure application quality and performance Perform code reviews and provide technical guidance and mentoring to junior and mid-level engineers Troubleshoot complex application, integration, performance, and production issues Collaborate with product owners, business analysts, architects, and other technology teams Participate in Agile/Scrum ceremonies Implement secure coding practices and support CI/CD pipelines Monitor application performance and identify opportunities for improvement Create and maintain technical documentation, architecture diagrams, and API specifications Stay current with emerging technologies and recommend improvements Primary Requirements: Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent experience 7+ years of software engineering experience with enterprise application development Strong hands-on experience with Java and Spring Boot Strong experience developing RESTful APIs and microservices Professional experience with React, JavaScript, HTML, and CSS Strong understanding of object-oriented programming, design patterns, data structures, and software engineering principles Experience with relational databases and SQL, such as Oracle, PostgreSQL, or SQL Server Experience with Git and modern source-control practices Experience with unit testing and automated testing frameworks Experience working in an Agile/Scrum software development environment Strong troubleshooting, analytical, and problem-solving skills Ability to work independently while collaborating effectively with cross-functional teams Strong verbal and written communication skills Desired Skills: Experience designing and developing cloud-native applications using AWS, Azure, or Google Cloud Experience with microservices architecture, event-driven architecture, and distributed systems Experience with Docker, Kubernetes, and containerized application development Experience with messaging and streaming technologies such as Kafka, RabbitMQ, or IBM MQ Experience with CI/CD and DevOps tools such as Jenkins, GitHub Actions, GitLab, or Azure DevOps Experience with Spring Cloud, Spring Security, OAuth2, and JWT Experience with TypeScript, Redux, React Query, or other modern React technologies Experience with NoSQL databases such as MongoDB, DynamoDB, or Redis Experience with API management, API gateways, and enterprise integration patterns Knowledge of AWS services, cloud security, observability, and application monitoring Experience modernizing legacy applications Experience with performance tuning, scalability, resiliency, and high-availability architectures Experience working in financial services, banking, insurance, or other highly regulated industries Experience providing technical leadership and mentoring engineers Familiarity with AI-assisted software development and modern developer productivity tools 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 apply! 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 of 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. #DIG10-OH