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

Belfast Freelance 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!

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™

Join a dynamic and innovative team that values your expertise as a Senior Backend Engineer Contractor, offering a fully remote role tailored for EU-based professionals. With competitive rates and a focus on cutting-edge technology, you'll thrive in a collaborative environment that encourages growth and the sharing of best practices. This is an exceptional opportunity to make a significant impact while enjoying the flexibility and work-life balance that comes with remote work.
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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 resonate well with the hiring team.

Tip Number 2

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

Tip Number 3

Prepare to demonstrate your problem-solving skills by discussing how you've optimised performance or improved security in past projects. Real-world examples will help illustrate your capabilities effectively.

Tip Number 4

Since this role requires a freelance mindset, be ready to talk about how you quickly adapt to new environments and contribute from day one. Share experiences that highlight your ability to communicate clearly and work collaboratively.

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
Legacy Code Support

Some tips for your application 🫡

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

Craft a Compelling Cover Letter: In your cover letter, emphasise your freelance mindset and ability to hit the ground running. Mention your familiarity with cloud-native systems and scalable architecture, as well as your willingness to support legacy Ruby codebases.

Showcase Relevant Projects: Include a section in your application that showcases specific projects or contributions you've made in previous roles, particularly those involving performance optimisation and secure coding practices.

Highlight Communication Skills: Since this role requires clear communication and collaboration with product and platform teams, make sure to mention any experiences where you successfully communicated complex technical concepts to non-technical stakeholders.

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

Since this role requires collaboration with product and platform teams, demonstrate your communication skills. Be clear and concise when explaining your past experiences and how you can add value to their team.

Familiarise Yourself with Best Practices

Research best practices in backend development, including secure coding and clean architecture. Be ready to discuss how you have implemented these practices in your previous roles and how they can benefit the prospective employer.

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

    Belfast
    Freelance

    Application deadline: 2027-06-29

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    Owen Thomas | Pending B Corp™

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