Senior Java Engineer at Stivlon Consulting

Job Summary

We are seeking an experienced Senior Java Engineer to join our client's engineering team in Abuja. The successful candidate will be responsible for designing, developing, and maintaining scalable, secure, and high-performance backend systems using Java and related technologies. You will play a key role in system architecture, code quality, and mentoring junior engineers while collaborating closely with cross-functional teams.

Key Responsibilities

• Design, develop, and maintain robust backend applications using Java
• Build and scale distributed systems, APIs, and microservices
• Lead architectural decisions and contribute to system design discussions
• Write clean, maintainable, and well-tested code following best practices
• Optimize application performance, scalability, and reliability
• Conduct code reviews and enforce engineering standards
• Mentor junior and mid-level engineers, providing technical guidance
• Collaborate with product managers, frontend engineers, QA, and DevOps teams
• Integrate databases, message queues, and third-party services
• Troubleshoot, debug, and resolve complex production issues
• Contribute to technical documentation and system diagrams

Required Qualifications & Experience

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience)
• 6+ years of professional software development experience
• Strong proficiency in Java (Java 8+) and object-oriented programming
• Extensive experience with Spring Boot, Spring MVC, and Spring Security
• Solid understanding of microservices architecture and RESTful APIs
• Experience with relational databases (PostgreSQL, MySQL, Oracle)
• Knowledge of ORM frameworks such as Hibernate/JPA
• Experience with multithreading, concurrency, and JVM performance tuning
• Familiarity with build tools such as Maven or Gradle
• Proficiency with Git and collaborative version control