We’re a FinTech company reinventing high-risk-market payments with an integrated digital identity layer. Our team is expanding, and we are looking for a highly experienced Senior Java Backend Developer to join our team and help us with the designing, developing and maintaining high-performance backend services, APIs, and database systems that power mission-critical applications. This role requires deep expertise in Java, modern backend architecture, scalable APIs, and relational databases.
Key Responsibilities:
Design, develop, and maintain robust, scalable backend services using Java
Build and enhance RESTful APIs consumed by internal and external applications
Lead database design, optimization, and query performance tuning (PostgreSQL, MySQL, or similar)
Write clean, testable, and maintainable code; participate in code reviews
Troubleshoot, debug, and resolve production issues with a strong focus on reliability and performance
Contribute to CI/CD processes and help improve software development workflows
Collaborate with cross-functional teams including Frontend, DevOps, and Product to deliver high-quality features
Mentor junior developers and contribute to architectural decisions and best practices
Key Requirements:
5+ years of professional experience in backend development using Java
Strong understanding of core Java and JVM internals
Hands-on experience with RESTful API design and development
Proven experience with relational databases (e.g., PostgreSQL, MySQL) and SQL performance tuning
Solid understanding of software engineering principles and best practices
Excellent problem-solving skills and ability to work independently and in a remote setting
Strong communication skills in English
What would differentiate you:
Experience with Spring Boot or similar frameworks
Knowledge of message queues (Kafka, RabbitMQ)
Familiarity with cloud-native architectures and containerization (e.g., Docker, Kubernetes)
Familiarity with microservices architecture
Experience with automated testing and test frameworks
What we offer:
Competitive base salary
100% remote working model & flexible hours
Hardware of your choice, and a culture of async documentation
Possibility to participate in a critical part of our business and make a real impact
If the above sounds a lot like you, please send your CV to job@tantumpay.com.
Only shortlisted candidates will be contacted.