At a Glance
- Tasks: Design and build robust backend services using Java, Python, and Rust.
- Company: Join a fast-moving tech-driven team at Owen Thomas, focused on software and AI/ML.
- Benefits: Enjoy fully remote work with competitive pay of £550-650pd, outside IR35.
- Other info: This is a 12-month contract role, ideal for EU-based freelancers.
- 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, Python, and familiarity with Rust and Ruby.
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
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Co-Founder @ Owen Thomas - Pending B Corp | Scaling teams for all things Software, Data, Cloud & AI/ML
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! :)
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Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-[...] employer: Owen Thomas | Pending B Corp™
Join a pioneering Renewable Energy Innovation Hub as an AI Software Engineer, where you'll enjoy the flexibility of remote work while contributing to impactful projects in sustainable technology. Our collaborative and innovative work culture fosters professional growth, allowing you to mentor junior engineers and lead technical design reviews, all while working with cutting-edge AI technologies. With competitive daily rates and the autonomy of a startup within a major organisation, this role offers a unique opportunity to make a difference in the renewable energy sector.
Contact Details:
Owen Thomas | Pending B Corp™ Recruitment 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-[...]
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We think you need these skills to ace Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-[...]
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Owen Thomas | Pending B Corp™.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Owen Thomas | Pending B Corp™ and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Owen Thomas | Pending B Corp™
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Owen Thomas | Pending B Corp™ uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
