Senior Java (Spring Boot) Engineer at KINZ Global Consult

Position Overview

A reputable organization seeks a dedicated Senior Java (Spring Boot) Engineer for a 3-month renewable contract role based in Lagos, Nigeria.

Key Responsibilities

• Build Java-based ETL and ELT pipelines to extract, transform, and load data from source systems
• Extract data from source systems and clean/transform it for analytics purposes
• Load processed data efficiently into ClickHouse data warehouse
• Structure data pipelines using ELT principles
• Develop efficient, well-tested, and reusable Java (Spring Boot) backend services to query, organize, and expose processed data through APIs
• Collaborate with frontend, mobile, and analytics teams to ensure the data layer supports dashboard visualizations and alerts
• Integrate user-facing elements developed by frontend and mobile app engineers
• Participate in brainstorming sessions to define, design, test, and ship application features
• Identify and resolve bottlenecks and bugs in new and existing applications

Required Experience & Skills

• 5-7 years of experience in a similar role
• Strong experience with Java, particularly Spring Boot for service development
• Strong experience building ETL/ELT pipelines and working with data integration
• Solid understanding of SQL, data modeling, and analytical querying
• Familiarity with APIs, JSON, and integrating external systems
• Proficiency with version control (Git) and collaborative development practices

Nice-to-Have Skills

• Exposure to predictive modeling with Python
• Familiarity with ClickHouse or other columnar databases
• AWS or cloud deployment experience