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

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

Freelance No home office possible
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At a Glance

  • Tasks: Design and build robust backend services using Java, Python, and Rust.
  • Company: Join a fast-moving global client with a tech-driven team.
  • Benefits: Enjoy a fully remote role with competitive pay of £550-650pd.
  • Why this job: Make a high impact in a modern backend environment while collaborating with talented teams.
  • Qualifications: Senior-level experience in backend development with Java and Python; Rust experience preferred.
  • Other info: This is a 12-month contract, outside IR35, with long-term engagement potential.

Opportunity: We are 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:

  • 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:

  • 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:

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

If interested, please apply here and we will contact you if it's a good match!

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Contact Detail:

Owen Thomas | Pending B Corp™ Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

Tip Number 1

Make sure to showcase your experience with Java and Ruby prominently in your discussions. Highlight specific projects where you've successfully implemented these technologies, as this will demonstrate your capability to handle the responsibilities of the role.

Tip Number 2

Familiarise yourself with the latest trends in backend development, especially around cloud-native systems and scalable architecture. Being able to discuss current best practices and how you’ve applied them in past roles can set you apart from other candidates.

Tip Number 3

Prepare to discuss your freelance mindset and how you can quickly adapt to new environments. Share examples of how you've added value to previous teams right from the start, as this is crucial for a contractor role.

Tip Number 4

If you have experience with Rust or legacy Ruby codebases, be ready to talk about it. Even if it's not your primary focus, showing willingness to support these areas can make you a more attractive candidate for the position.

We think you need these skills to ace Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

Java Programming
Ruby Programming
Python Programming
Rust Programming
Backend Development
API Design and Development
Cloud-Native Architecture
Performance Optimisation
Secure Coding Practices
Clean Architecture Principles
Collaboration with Product Teams
Scalable Systems Design
Freelance Mindset
Effective Communication Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with Java, Ruby, and any relevant backend technologies. Focus on specific projects where you've designed and built robust backend services.

Craft a Compelling Cover Letter: In your cover letter, explain why you're the perfect fit for this role. Mention your freelance mindset and ability to quickly add value, as well as your experience with cloud-native systems and scalable architecture.

Showcase Relevant Projects: Include examples of past projects that demonstrate your skills in performance optimisation, secure coding, and clean architecture. If you have experience with Rust or legacy Ruby codebases, be sure to mention that too.

Highlight Communication Skills: Since this is a remote position, emphasise your communication skills and ability to collaborate with product and platform teams. Provide examples of how you've successfully worked in a remote environment before.

How to prepare for a job interview at Owen Thomas | Pending B Corp™

Showcase Your Technical Skills

Be prepared to discuss your experience with Java, Ruby, and Python in detail. Highlight specific projects where you've designed and built backend services, and be ready to explain your approach to performance optimisation and secure coding.

Demonstrate Your Freelance Mindset

Since this is a contractor role, it's crucial to convey your ability to hit the ground running. Share examples of how you've quickly adapted to new environments and added value in previous freelance positions.

Discuss Collaboration Experience

Emphasise your experience working with product and platform teams. Be ready to provide examples of how you've collaborated to scale infrastructure and contributed to architectural decisions in a team setting.

Prepare for Legacy Code Discussions

Given the need for supporting legacy Ruby codebases, be prepared to discuss your familiarity with Ruby and any past experiences you've had with maintaining or integrating legacy systems. This will show your versatility and willingness to tackle challenges.

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

    Freelance
  • O

    Owen Thomas | Pending B Corp™

    50-100
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