Senior Kotlin/Java Backend Engineer (#4150)

Описание

Work type: Office/Remote Technical Level: Senior Job Category: Software Development Project: OVO Energy

We are looking for a Senior Kotlin/Java Backend Engineer who thrives in complex data-driven environments, learns new frameworks quickly, and contributes to the continuous improvement of our architecture and delivery practices.

The Market-wide Half-Hourly Settlement (MHHS) Program is a key initiative shaping the future of the UK energy market. The system enables the measurement and processing of electricity consumption data every half hour — providing a more accurate view of real energy usage. This drives fairer tariffs, supports renewable integration, and fosters a more efficient, data-driven energy ecosystem.

As a Backend Engineer, you will play a central role in building and maintaining the core data processing flows of the MHHS system, ensuring scalability, reliability, and accuracy of large-scale data operations. You’ll work within the IOps pod, collaborating with cross-functional teams to design, develop, and evolve high-performance backend services running on the JVM stack.

Responsibilities:

Design, build, and maintain core backend components and data processing flows for the MHHS platform Implement reliable, efficient, and scalable services using Kotlin and Java (JVM) Work with frameworks such as Quarkus and Spring (DI) to develop and integrate backend services Apply ORM and persistence best practices using Hibernate Collaborate closely with other engineers, data specialists, and DevOps to ensure smooth system integration Contribute to the CI/CD pipeline and modern software delivery practices Ensure observability, fault tolerance, and performance optimization of backend services Participate in code reviews, architectural discussions, and continuous improvement of engineering practices Support Agile delivery through estimation, planning, and iterative value delivery Promote clean code principles, testing culture, and high engineering standards

Requirements:

5+ years of experience in backend development using Java and/or Kotlin Proficiency with Hibernate and relational databases (SQL, PostgreSQL) Hands-on experience with Spring Boot or Quarkus frameworks Experience with CI/CD pipelines, version control (Git), and Agile delivery practices Experience with Docker and cloud environments (AWS and/or GCP) Knowledge of Kafka, message queues Understanding of event-driven architecture and RESTful APIs Experience building reliable, scalable backend systems with a strong observability and security focus Excellent problem-solving and analytical skills Upper-intermediate English and effective communication in distributed teams

Would be a plus:

TypeScript skills — ability to understand or contribute to backend code when needed Understanding of energy sector data flows

We offer*:

Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits

*not applicable for freelancers