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

Full-Time 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 client at a global scale in a tech-driven environment.
  • Benefits: Enjoy a fully remote role with competitive pay and long-term engagement potential.
  • Why this job: Make a high impact in a modern backend team while working on scalable systems.
  • Qualifications: Senior-level experience in backend development with Java, Python, and Rust required.
  • Other info: Must be EU-based for legal reasons; start ASAP!

Opportunity: 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:

  • 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!

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

As a Senior Backend Engineer Contractor with us, you'll join a dynamic and tech-driven team that values innovation and collaboration, all while enjoying the flexibility of fully remote work within the EU. We offer competitive rates and a supportive environment that fosters professional growth, allowing you to enhance your skills in modern backend technologies while contributing to high-impact projects at a global scale.
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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 used these languages, especially in a production environment, as this will demonstrate your capability to hit the ground running.

Tip Number 2

Familiarise yourself with the latest trends in backend development, particularly around scalable systems and cloud-native architectures. Being able to discuss these topics confidently can set you apart during conversations with our team.

Tip Number 3

Prepare to discuss your approach to performance optimisation and secure coding practices. Sharing examples of how you've implemented these in past roles will show that you understand the importance of clean architecture and best practices.

Tip Number 4

Since this role requires a freelance mindset, be ready to demonstrate your ability to communicate effectively and add value quickly. Share instances where you've successfully collaborated with teams or adapted to new environments swiftly.

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 Skills
Freelance Mindset
Scalable Systems Design
Legacy Code Support

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with Java, Ruby, and any other relevant technologies mentioned in the job description. Use specific examples of projects where you've designed and built backend services.

Craft a Compelling Cover Letter: Write a cover letter that showcases your freelance mindset and ability to hit the ground running. Mention your familiarity with cloud-native systems and scalable architecture, and how you can contribute to the team.

Showcase Relevant Projects: Include links or descriptions of past projects that demonstrate your expertise in backend engineering, particularly with Java, Ruby, and Rust. Highlight any performance optimisation or secure coding practices you've implemented.

Proofread Your Application: Before submitting, carefully proofread your application for any spelling or grammatical errors. A polished application reflects your attention to detail and professionalism.

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 Rust in detail. Highlight specific projects where you've designed and built backend services, and be ready to explain the challenges you faced and how you overcame them.

Demonstrate Your Problem-Solving Abilities

Expect technical questions that assess your problem-solving skills. Practice coding challenges or system design scenarios relevant to backend engineering, as this will help you articulate your thought process during the interview.

Communicate Clearly and Effectively

As a contractor, clear communication is key. Be ready to discuss how you collaborate with product and platform teams, and provide examples of how you've contributed to optimising performance and ensuring secure coding practices.

Familiarise Yourself with Legacy Systems

Since the role may involve supporting legacy Ruby codebases, brush up on your knowledge of Ruby and be prepared to discuss how you would approach maintaining and integrating with older systems while implementing best practices.

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

    Full-Time

    Application deadline: 2027-06-22

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    Owen Thomas | Pending B Corp™

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