Crown Interactive delivers innovative, cost-effective, service aggregation solutions to the Telecom, Media and Technology-based sectors. Starting in 2005, this London-based business has gained ground-breaking expertise integrating business systems with evolving information technology. Based on the local demands of emerging markets, a new operation has been launched with its head office in Lagos, Nigeria. We also have a base in Washington DC. Our uniquely qualified and highly skilled team includes a diverse make-up of international technology professionals. The company is guided by our operating principles of professionalism, integrity, efficiency, innovation, and unsurpassed customer service. Crown Interactive is launching a world-class Service Aggregator platform in Nigeria using cutting-edge Business Support Systems (BSS) platform. The service offering includes comprehensive order-to-cash services for local and international service providers who are seeking to outsource their business support systems with a minimum of capital expenditure. Additionally, Crown Interactive has established a Nigerian-based products operation with exclusive distribution rights to provide highly innovative 3G data and voice Customer Premise Equipment (CPE) for individual consumers and small-to-medium businesses.
Job Objective
- Are you passionate about building robust, scalable backend systems? Do you enjoy solving complex problems and creating efficient, high-quality solutions?
- We are looking for a talented Java Developer to contribute to the design, development, and maintenance of our software applications. As a key member of the engineering team, you will be responsible for building and enhancing backend services that power our products and support business growth.
- You should have a solid foundation in Java development and be eager to contribute across the full software development lifecycle from requirements analysis and design to development, testing, deployment, and ongoing support while collaborating closely with cross-functional teams.
Key Roles & Responsibilities:
- Develop and maintain backend applications using Java 8+, Spring Framework, and Spring Boot
- Design, implement, and consume RESTful APIs
- Implement business logic with a focus on performance, scalability, and reliability
- Work with JPA/Hibernate to map domain models and optimize database interactions
- Write clean, maintainable, and well-documented code
- Perform unit and integration testing using JUnit and Mockito
- Debug and resolve application defects and production issues
- Participate in code reviews and contribute to technical improvements
- Collaborate with DevOps, QA, and frontend teams to deliver features end-to-end
Skill Requirements
- Experience working in agile or cross-functional teams Java application architecture
- REST API design principles
- Database query optimization
- Exception handling and logging
- Basic understanding of security concepts (JWT, authentication, authorization)
- Exposure to microservices architectures
- Experience with Docker
- Knowledge of application performance tuning
- Experience with Undertow or Tomcat configuration
Required Qualification
- Experience working with cross-functional product teams in an agile environment. Bachelor’s degree in Computer Science, Engineering, or a related field
- 5 to 7 years professional experience in Java backend development
- Strong experience with Spring Boot, Spring MVC, and Spring Data JPA
- Experience building and consuming REST APIs
- Proficiency with MySQL or similar relational databases
- Experience using Maven or Gradle
- Experience, preferably in energy, power, or utilities-focused software projects.
- Proven experience with software solutions for power distribution, metering, or energy billing systems.
- Strong proficiency in one or more programming languages: Java, C#, Python, or JavaScript (Node.js, React, or Angular).
- Familiarity with Linux-based deployment environments
Method of Application
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