Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Own and ship core product features, writing clean Ruby on Rails and JavaScript code.
- Company: Join Judge.me, a high-growth e-commerce trust platform with global impact.
- Benefits: Competitive salary, clear career progression, and a high-performance culture.
- Why this job: Make a real difference for over 200,000 merchants worldwide while advancing your career.
- Qualifications: Expertise in Ruby on Rails and modern JavaScript with a focus on quality.
- Other info: Dynamic environment with opportunities for leadership roles as the team grows.
The predicted salary is between 100000 - 105000 £ per year.
Join Judge.me to solve real-world commerce problems for hundreds of thousands of global merchants. You will own core product features end-to-end, writing clean Ruby on Rails and JavaScript code while navigating ambiguity to drive high-impact outcomes. This role offers clear career progression into Staff or Leadership tracks within a results-driven, engineering-first culture.
Location: London, UK
Why this role is remarkable:
- Significant scale and impact, building trust-based commerce tools used by over 200,000 active merchants across the globe.
- Exceptional career mobility with defined growth paths into Staff Engineer or Engineering Management roles as the team scales.
- High-performance culture that prioritises deep work, short feedback loops, and sustainable excellence over long hours and bureaucracy.
What you will do:
- Own and ship core product features end-to-end, from initial design through to delivery on a global scale.
- Drive engineering excellence by writing maintainable code across Rails, JavaScript, SQL, and AWS while improving system reliability.
- Identify and remove friction in the internal developer experience by enhancing tooling, automation, and observability workflows.
The ideal candidate:
- Expert-level experience with Ruby on Rails and modern JavaScript, with a track record of delivering high-quality production systems.
- Strong product intuition and the ability to decompose complex, ambiguous requirements into clear, executable technical steps.
- Pragmatic mindset focused on continuous improvement, utilising AI and automation to accelerate development velocity and team output.
Senior Software Engineer (Fullstack) (£100-105k) at Judge.me employer: Jack and Jill AI
Contact Detail:
Jack and Jill AI Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer (Fullstack) (£100-105k) at Judge.me
✨Tip Number 1
Get to know Jack! He’s your go-to AI for understanding what you’re all about. Have a chat with him on our website, and he’ll help you highlight your skills and ambitions to make you stand out.
✨Tip Number 2
Don’t just wait for opportunities to come to you. Be proactive! Use our platform to connect with Jill and get your name in front of the right people. The more you engage, the better your chances!
✨Tip Number 3
Prepare for your chat with Jack by brushing up on your Ruby on Rails and JavaScript skills. Show him you’re ready to tackle real-world problems and own those core product features at Judge.me.
✨Tip Number 4
Follow up after your conversation with Jack. Keep the momentum going! Whether it’s asking for feedback or exploring other roles, staying engaged shows your enthusiasm and commitment.
We think you need these skills to ace Senior Software Engineer (Fullstack) (£100-105k) at Judge.me
Some tips for your application 🫡
Show Off Your Skills: Make sure to highlight your expertise in Ruby on Rails and JavaScript. We want to see your experience shine through, so don’t hold back on showcasing your best projects and achievements!
Tailor Your Application: Take a moment to customise your application for this role. Mention how your background aligns with the responsibilities at Judge.me, especially around driving engineering excellence and improving developer experiences.
Be Clear and Concise: When writing your application, keep it straightforward. We appreciate clarity, so make sure your points are easy to understand and get straight to the heart of what makes you a great fit for the team.
Apply Through Our Website: Don’t forget to apply through our website! It’s the best way for us to connect you with Jack and ensure your application gets the attention it deserves. Let’s get you started on this exciting journey!
How to prepare for a job interview at Jack and Jill AI
✨Know Your Tech Stack
Make sure you brush up on Ruby on Rails and modern JavaScript before the interview. Be ready to discuss your past projects and how you've used these technologies to solve real-world problems. This will show that you're not just familiar with the tools, but that you can apply them effectively.
✨Demonstrate Problem-Solving Skills
Prepare to talk about how you've tackled ambiguous requirements in previous roles. Think of specific examples where you broke down complex tasks into manageable steps. This will highlight your product intuition and ability to drive high-impact outcomes.
✨Show Your Pragmatic Mindset
Be ready to discuss how you've implemented continuous improvement in your work. Whether it's through AI, automation, or enhancing developer experiences, share concrete examples that demonstrate your focus on efficiency and quality.
✨Ask Insightful Questions
At the end of the interview, don’t shy away from asking questions about the company culture and growth opportunities. Inquire about their engineering-first approach and how they support career progression. This shows your genuine interest in the role and helps you assess if it’s the right fit for you.
