Java Platform Engineer - Xist4

Vacancy

Java Platform Engineer

£90k - 110k per year
London
Permanent - Full-time

Job Description

Java Platform Engineer

Location: London (Hybrid – 2 days onsite)

A UK-based electric vehicle and energy technology company is looking for a Java Platform Engineer to help build and evolve the backend platforms that support battery technology, EV charging networks, and energy data services.

This is a hands-on engineering role focused on designing, building, and operating Java-based systems that sit behind real-world infrastructure — from charging availability and energy optimisation to battery performance and telemetry data.

Why this role?

EV charging and battery platforms demand software that is robust, scalable, and operationally sound. As a Java Platform Engineer, you’ll work on backend services that must perform reliably in live environments, handling high volumes of data and integrating with physical systems.

You’ll join a team that values clean design, strong fundamentals, and pragmatic engineering over unnecessary complexity.

Key Skills & Experience

You don’t need prior experience in EV, battery, or energy systems. If you’ve built and supported reliable backend platforms and enjoy working close to infrastructure-level challenges, your background will translate well.

Essential

  • Strong commercial experience with Java (Java 11+)
  • Building backend services using Spring / Spring Boot
  • Experience designing and operating distributed systems
  • Strong API development experience (REST, service-to-service integration)
  • Solid SQL skills and relational database experience
  • Experience working in cloud environments (AWS, Azure, or GCP)

Useful to have

  • Experience with event-driven architectures or messaging
  • Handling high-volume, time-series, or telemetry data
  • Exposure to charging platforms, energy systems, or IoT-style integrations
  • Familiarity with containers (Docker) and CI/CD pipelines
  • Interest in clean energy, EV infrastructure, or battery technology

What you’ll be doing

As a Java Platform Engineer, you’ll be hands-on across design, build, and run:

  • Designing and developing Java services that underpin battery and EV charging platforms
  • Building APIs used by charging systems, operational tools, and partner integrations
  • Improving system scalability, reliability, and data integrity
  • Collaborating with engineers across software, data, and platform teams
  • Contributing to technical decisions and improving platform standards
  • Supporting production systems and continuously improving how they operate

The Opportunity

  • Work on EV charging, battery tech, and energy platforms with real-world impact
  • Hands-on senior engineering role with meaningful technical ownership
  • Modern Java stack with cloud-native development
  • Long-term platform engineering rather than short-term delivery
  • Hybrid London working with a technically grounded team

Salary & Benefits (London-weighted)

  • Salary: £90,000 – £110,000 (depending on experience)
  • Hybrid working (London)
  • Pension and benefits package
  • Learning budget and support for professional development
  • Opportunity to grow with a scaling EV and energy technology business

Interested?
If you’re a Java Platform Engineer who enjoys building reliable systems behind EV charging or energy platforms, apply now or reach out for a confidential conversation.



Apply Now

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