Java Developer - Backend

Experis - ManpowerGroup; Greater London; On-site; GBP 182,000 - 208,000; Full time

Job summary

ManpowerGroup seeks a Senior Backend Engineer in London to design, build and maintain scalable Java backends for our new games. You will collaborate with Unity developers and cross‑functional teams to translate game requirements into robust technical solutions.

The role involves working on live services with a large user base, mentoring junior engineers, and delivering high‑quality code in a fast-paced environment. Hybrid/remote options are available in the London area.

Qualifications

• Architect and implement Java components and systems.
• Balance SOLID and KISS in designs.
• Experience with live game backend serving large user bases.
• Experience with databases and general web development.
• Support game servers from a Level 3 perspective.
• Unix environments and Git experience.
• Experience with custom tech stacks and collaborating with external developers.
• Mentor junior developers.
• Experience backend for mobile apps.

Responsibilities

• Build and maintain backend Java services to support games.
• Integrate with existing tech and develop new solutions for our games.
• Investigate issues reported by game teams and escalate where needed.
• Collaborate with Unity developers to deliver a cohesive gameplay experience.

Skills

Java backend

System design

Live service

Communication

Mentoring

Tools

Kubernetes

Docker

Jenkins

CI/CD

Gradle

GCP

Kafka

BigQuery

Job description

Senior Backend Engineer
Location: London
Full Time - 40 hours pw
Rate: £700 - £800
Duration: 6 months
Hybrid - 2-3 days in London offer OR 100% remote

Work supporting our new generation of games. You will challenge and refine our way of working with internal technology.

YOUR ROLE

As our Java Backend Developer you will be a part of a team with the mission to build and maintain technology to support the studio in creating our new games. This includes integrating with existing tech, developing new creative solutions for our games, investigating problems reported by the game teams and coaching fellow developers. You will work in close collaboration with our Unity developers to enjoy a creative, challenging and collaborative workplace where your ideas will be every bit as valued as your programming expertise.

SKILLS TO CREATE THRILLS

You have great passion for system development, new technologies, large scale systems and games in particular. You\'re an excellent communicator, happy dealing with people from different business units and with varying degrees of technical savvy. Therefore, you\'re able to translate business needs to technical requirements and implementation.

• Able to architect, design and implement components, features and systems in Java.
• Able to design technical solutions that follow a good balance between SOLID and KISS principles.
• Excited about working on a live game product with a massive number of active users.
• Knowledge of databases and general web development.
• Able to support game servers from a Level 3 support perspective, investigating issues when escalated.
• Experienced working with UNIX environments and Git.
• Experience working with custom tech stacks, reaching out to developers outside of the immediate team when needed.
• Great communication between our dedicated ops team, client developers and other backend developers.
• Ability to work with different teams and provide mentorship to junior developers
• Experience with developing backend for mobile apps.

Desired

• Experience with C# and Unity engine.
• Experience with Gradle build systems.
• Experience using Jenkins or other CI systems for automation.
• Experience with Kubernetes and Docker
• Experience with GCP/GKE
• Experience with Kafka and Big query

If you receive suspicious outreach claiming to be from us, please contact us via the ManpowerGroup website.