Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-[...]

JR United Kingdom; Greater Manchester; Remote; GBP 80,000 - 100,000; Full time

Job summary

A leading company is seeking a Senior Backend Engineer Contractor with expertise in Java and Ruby. This fully remote role involves designing robust backend services, collaborating with teams, and optimising performance. Ideal candidates will have experience in production systems and a freelance mindset.

Qualifications

• Senior-level backend experience with Java and Python in production systems.
• Proven work with Rust, familiarity with Ruby preferred.

Responsibilities

• Designing and building robust backend services across Java, Python, and Rust.
• Collaborating with product and platform teams to scale critical infrastructure.
• Contributing to performance optimisation and clean architecture decisions.

Skills

Java

Python

Rust

Ruby

Job description

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Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length, greater manchester

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Client:

Location:

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

4

Posted:

12.05.2025

Expiry Date:

26.06.2025

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Job Description:

Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

We're supporting a fast-moving client at huge global scale, that is in need of a Senior Backend Contractor with deep experience across Java and Ruby. This is a high-impact freelance role within a tech-driven established team - building scalable systems in a modern backend environment.

What You'll Be Doing as a Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :

• Designing and building robust backend services across Java, Python, and Rust-based systems
• Collaborating with product and platform teams to scale critical infrastructure
• Contributing to performance optimisation, secure coding, and clean architecture decisions
• Bringing in best practices across multiple programming paradigms and languages
• Ideally, supporting legacy Ruby codebases or integrations where needed

Core Skills for the Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :

• Senior-level backend experience with both Java and Python in production systems
• Proven work with Rust (production experience strongly preferred)
• Familiarity with Ruby or willingness to support legacy pieces if required
• Strong grasp of APIs, cloud-native systems, and scalable architecture
• Freelance mindset: able to hit the ground running, communicate clearly, and add value fast

Details for the Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35

• Contract: LTD company (UK) / B2B
• Location: Remote (must be EU-based for legal/timezone reasons)
• Start: ASAP

If interested in this Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35, please apply here and we will contact you if it's a good match! :)