Senior Java Engineer

Responsibilities:

• Architect, develop, and maintain scalable Java/Spring Boot microservices powering core banking, lending, and payment processing systems.
• Design and implement RESTful APIs with strong emphasis on security, transaction integrity, and performance at scale.
• Own the full software development lifecycle  from technical design and code review through CI/CD, deployment, and production monitoring.
• Lead migration and modernisation efforts on legacy Java codebases, upgrading libraries, frameworks, and infrastructure.
• Integrate with third-party payment providers, banking APIs (NIBSS, NIP), and NFC hardware partners.
• Establish and enforce engineering best practices: unit/integration testing, code reviews, documentation, and observability (logging, tracing, alerting).
• Collaborate with the product and data teams to build credit decisioning and risk management features.
• Mentor junior engineers and contribute to a high-performance engineering culture.

Requirements:

• A minimum of 5 years of professional software engineering experience with Java as primary language.
• Deep expertise in Spring Boot, Spring Security,Hibernate/JPA, and microservices patterns.
• Hands-on experience with relational databases (PostgreSQL, MySQL) — query optimisation, schema design, and migrations.
• Proven track record deploying and managing services on cloud platforms (AWS, GCP, or Azure) using Docker and Kubernetes.
• Strong understanding of CI/CD pipelines (Jenkins, GitHub Actions, or similar) and DevOps practices.
• Experience with message brokers (Kafka, RabbitMQ) and event-driven architectures is a strong plus.
• Familiarity with fintech/payments domain — transaction processing, reconciliation, and regulatory compliance (CBN guidelines).
• Excellent problem-solving skills with attention to security, scalability, and clean code.