Senior Java Backend Developer
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 highperformance 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.