Senior Java Engineer Job at Interswitch Group

Interswitch Group is an Africa-focused integrated digital payments and commerce company. Since 2002, we have built and managed payment infrastructure and developed innovative payment products and transactional services throughout Africa. We strive to attract young, talented professionals who want to make a difference and offer unique career opportunities in an innovative and fun environment. If you're interested in shaping the future of payment technology in Africa, please send us your resume and cover letter stating the department you're interested in.

We are recruiting to fill the position below:

Job Position: Senior Java Engineer

Job Location: Victoria Island, Lagos
Employment Type: Full-time
Department: Engineering
Reports to: Engineering Manager

Job Summary

• We are seeking a highly skilled Senior Java Engineer to design, develop, and maintain high-performance, scalable, and secure Java-based applications. As a key member of our engineering team, you will lead technical initiatives, mentor junior engineers, and contribute to architectural decisions. 
• The ideal candidate has extensive experience with Java ecosystems, microservices, cloud technologies, and a strong understanding of software development best practices.

Key Responsibilities

• Design, develop, and deploy robust, scalable Java applications using Spring Boot, Microservices, and Cloud-Native technologies.
• Lead technical discussions, architecture design, and code reviews to ensure high-quality software delivery.
• Optimize application performance, troubleshoot issues, and implement solutions for scalability and reliability.
• Collaborate with cross-functional teams (Product, DevOps, QA) to deliver features aligned with business goals.
• Mentor junior engineers, promote best practices in coding, testing, and CI/CD pipelines.
• Stay updated with emerging technologies and advocate for improvements in development processes.
• Ensure compliance with security and data protection standards.

Education & Certifications

• Bachelor’s or Master’s Degree in Computer Science, Engineering, or related field.
• Relevant certifications (Spring Professional, etc.) are a plus.

Preferred Qualifications:

• Experience with reactive programming (Project Reactor, RxJava).
• Knowledge of frontend technologies (React) is a plus.
• Contributions to open-source projects or technical blogs.

Required Skills & Qualifications:

• 5+ years of professional experience in Java development (Java 8/11/17+).
• Strong expertise in Spring Framework (Spring Boot, Spring Cloud, Spring Security).
• Experience with microservices architecture, RESTful APIs, and distributed systems.
• Proficiency in SQL/NoSQL databases (MS SQL etc.).
• Hands-on experience with cloud platforms (AWS, Azure, or GCP) and containerization (Docker, Kubernetes).
• Strong understanding of design patterns, OOP, and system architecture.
• Experience with unit / integration testing (JUnit, Mockito, TestNG).
• Familiarity with message brokers (Kafka, RabbitMQ) and caching solutions (Redis).
• Knowledge of DevOps practices (CI/CD, Jenkins, GitLab CI, GitHub Actions).
• Excellent problem-solving skills and ability to work in an Agile environment.

Why Join Us?

• Competitive salary and equity options.
• Flexible work arrangements (hybrid).
• Opportunity to work on cutting-edge technologies with a talented team.
• Career growth and learning & development programs.

Method of Application
Interested and qualified candidates should send their Applications to: olabode.olaleye@interswitchgroup.com using the Job Position as the subject of the email.