Senior Java & Spring Boot Engineer – Acting Tech Lead - remote

Client Project | 3-Month Full-Time Engagement

About the Opportunity

We are hiring on behalf of our client for a Senior Java & Spring Boot Engineer to take on an Acting Tech Lead role within a fintech project.

This is a 3-month project-based engagement, with the selected candidate working full-time throughout the project duration. The role requires strong hands-on backend engineering capabilities, combined with technical leadership and a solid understanding of fintech systems and financial transaction flows.

Key Responsibilities

• Design, develop, and maintain scalable backend services using Java and Spring Boot.
• Take on Acting Tech Lead responsibilities, providing technical guidance and supporting the team in delivering high-quality solutions.
• Work extensively with Hibernate/JPA, including entity mapping, transaction management, relationships, and query performance tuning.
• Develop, optimize, and troubleshoot MySQL queries, with a focus on performance, data integrity, and scalability.
• Implement and manage Redis for caching, session management, and distributed locking mechanisms.
• Develop and maintain solutions for critical fintech workflows, including payments, ledgers, reconciliation, audit trails, and lending/loan processes.
• Apply appropriate software engineering and design practices to ensure solutions are maintainable, secure, reliable, and scalable.
• Write and maintain unit tests to ensure code quality and system reliability.
• Participate in code reviews and contribute to technical decision-making and engineering best practices.
• Collaborate closely with product, QA, and other technical stakeholders throughout the development lifecycle.
• Work within an Agile environment, participating in sprint planning, daily stand-ups, reviews, retrospectives, and other Agile ceremonies.
• Use Git for source control, branching, collaboration, and code management.

Required Skills & Experience

• Strong professional experience with Java and Spring Boot.
• Solid hands-on experience with Hibernate/JPA, including:
• Entity and relationship mapping
• Transaction management
• Query optimization and performance tuning
• Strong experience with MySQL, including writing, analyzing, and optimizing complex queries.
• Practical experience with Redis, particularly caching, session management, and distributed locks.
• Strong understanding of fintech and financial services systems, with hands-on experience in areas such as:
• Payments
• Financial ledgers
• Reconciliation
• Audit and transaction tracking
• Loans / lending
• Experience writing effective unit tests and applying testing best practices.
• Strong experience with Git and modern software development workflows.
• Experience working in an Agile/Scrum environment.
• Previous experience providing technical leadership, mentoring, or acting as a technical lead is highly preferred.
• Strong problem-solving, communication, and technical decision-making skills.