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Senior Java Software Engineer at Mintyn Digital Bank

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Employment type not specifiedExperience not specifiedNigeria
Company not specifiedNigeria

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  • Posted: Jun 24, 2026

    Deadline: Not specified

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    Mintyn Digital Bank is the best digital bank in Nigeria that puts you in control. We are a self-service platform developed for customers to carry out a range of digital and mobile banking transactions on their accounts.

    Senior Java Software Engineer

    ABOUT THE ROLE

    • We are looking for a highly skilled and motivated Senior Software Engineer to join our growing engineering team. In this role, you will design, build, and maintain scalable, high-performance backend systems that power our core products. You will work closely with cross-functional teams to deliver robust solutions and help define the technical direction of our platform.
    • This is a hybrid role requiring regular in-office collaboration alongside flexible remote working. The ideal candidate thrives in a fast-paced environment, takes ownership of complex challenges, and demonstrates strong technical leadership within an agile team.

    KEY RESPONSIBILITIES

    • Design, develop, and maintain scalable and resilient microservices using Java and Spring Boot.
    • Build reactive and non-reactive REST APIs leveraging Spring WebFlux and Spring MVC.
    • Manage relational data persistence with PostgreSQL, including schema design and query optimisation.
    • Own and evolve database migration strategies using Liquibase to support continuous delivery.
    • Implement event-driven architectures and asynchronous communication patterns using Apache Kafka.
    • Design and integrate caching strategies using Redis or equivalent caching technologies to improve system performance.
    • Write comprehensive unit and integration tests to maintain high code quality and ensure system reliability.
    • Design, deploy, and manage microservice architectures with a focus on scalability, fault tolerance, and maintainability.
    • Build and maintain CI/CD pipelines to automate testing, builds, and deployments across environments.
    • Participate actively in code reviews, providing constructive feedback and upholding engineering best practices.
    • Collaborate with product managers, architects, and fellow engineers to translate business requirements into technical solutions.
    • Mentor junior and mid-level engineers, fostering a culture of continuous learning and technical excellence.
    • Identify, diagnose, and resolve performance bottlenecks and production incidents.

    REQUIRED QUALIFICATIONS

    • Must have international Passport for Traveling
    • Minimum of 5 years of hands-on software development experience with Java and Spring Boot.
    • Strong proficiency in both Spring WebFlux (Reactive) and Spring MVC frameworks.
    • Proven experience working with PostgreSQL — schema design, indexing, and performance tuning.
    • Hands-on experience with Liquibase or a comparable database migration tool (e.g. Flyway).
    • Practical experience building and consuming Apache Kafka topics in production environments.
    • Experience with Redis or other distributed caching technologies (e.g. Memcached, Hazelcast).
    • Strong command of unit testing frameworks such as JUnit 5 and Mockito, with a TDD-oriented mindset.
    • Deep understanding of microservice architecture patterns — service discovery, circuit breaking, API gateway, distributed tracing.
    • Demonstrated experience setting up and maintaining CI/CD pipelines (e.g. GitHub Actions, Jenkins, GitLab CI).
    • Familiarity with containerisation and orchestration tools such as Docker and Kubernetes.
    • Solid understanding of RESTful API design principles and best practices.
    • Strong problem-solving and analytical skills with the ability to break down complex technical problems.
    • Excellent communication and collaboration abilities, with comfort working across engineering and product teams.
    • Willingness and ability to work in a hybrid arrangement with regular in-office attendance.

    NICE TO HAVE

    • Experience in fintech, payments, or other regulated industries.
    • Knowledge of cloud platforms such as AWS, GCP, or Azure.
    • Experience with observability tooling — Prometheus, Grafana, ELK stack, or OpenTelemetry.
    • Exposure to gRPC or GraphQL as alternative API paradigms.
    • Contributions to open-source projects or active participation in the Java/Spring community.

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1 200 000 ₦

Based on 56 offers with salary for this country

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