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Lorien

Back End Developer

Hybrid

Leeds, United kingdom

Freelance

09-01-2026

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Skills

Communication Java SQL NoSQL CI/CD DevOps Docker Architecture Programming AWS Agile Spring CI/CD Pipelines Kafka Microservices

Job Specifications

Senior Backend Developer

Contract – 6 month

Leeds (1 day a week in the office)

Outside IR35

Are you a talented and experienced Senior Backend Developer looking to join a dynamic team and contribute to the growth of an innovative technology company? If so, we have an incredible opportunity that you won't want to miss!

About the Senior Backend Developer Role

This Senior Backend Developer role is a unique chance to be a part of a forward-thinking team that is shaping the future of retail technology. As a Senior Backend Developer, you will be responsible for designing and building Java microservices using the latest frameworks and best practices. You will also have the opportunity to mentor junior developers, influence the technical direction of the team, and help drive the evolution of next-generation sports betting technology.

Key Responsibilities of the Senior Backend Developer

Design and build scalable, fault-tolerant, and high-performance Java microservices
Lead initiatives to improve code quality, reduce technical debt, and enhance CI/CD pipelines
Promote functional programming and internal open-source practices
Mentor junior and mid-level developers, fostering a culture of growth and excellence
Contribute to a culture of continuous improvement and innovation

What We're Looking for in a Senior Backend Developer

Professional Java development experience
Deep expertise in Spring Framework and microservices architecture
Proven ability to mentor and develop engineering talent
Strong background in messaging systems (Kafka, RabbitMQ)
Proficiency with AWS, Docker, SQL/NoSQL, and automated testing
Experience in Agile environments with a DevOps mindset
Excellent communication and collaboration skills

About the Company

Lorien is a technology, transformation and telecom talent solutions specialist. We combine tech expertise with the scope, depth and breadth of large-scale talent solutions. Driven by both clients and candidates, covering Europe and the US, we work with all sectors, sizes and tech needs – from start-up to established, tech companies and those who use tech to propel them further - we work with them all. Our unique position in the market means we have the insight to create tailored solutions – keeping our clients ahead of t... Know more