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For Companies At a Glance
- Tasks: Design and develop innovative payment technologies with a focus on microservices.
- Company: Join a forward-thinking company revolutionizing payment solutions for businesses worldwide.
- Benefits: Enjoy a hybrid work model, competitive salary, and bonus opportunities.
- Why this job: Be part of a supportive culture that values innovation and real-world impact.
- Qualifications: 5+ years in software development with experience in .NET C#, Java, or Go.
- Other info: Work in London, collaborating globally while mentoring the next generation of engineers.
The predicted salary is between 57000 - 95000 ÂŁ per year.
Full Stack Developer | Build the Future with Us
Location: Hybrid / London
Ready to make real impact — not just ship code?
We’re on the hunt for a Full Stack Developer who’s hungry to create game-changing digital products and shape the future of client experience. You'll join a small, agile team inside an ambitious, people-first organisation where tech isn't just an add-on — it's at the heart of how we work.
The Company
A future-focused, client-obsessed company that believes brave ideas and brilliant people can achieve incredible things. They're building tools and platforms that make work smarter, relationships stronger, and opportunities bigger.
What You’ll Do
You won’t be just another developer here. You’ll own projects end-to-end, solve real client problems, and see your work out in the wild — fast.
- Collaborate directly with clients, designers, and engineers to bring bold ideas to life
- Rapidly prototype, build, and scale beautiful, reliable products
- Help shape how we architect our systems, choose our tools, and design our processes
- Share ideas, ship fast, and make real impact every single day
What You’ll Bring
- 5+ years of real-world development experience
- A love for solving problems, not just writing code
- Clear communication skills (techy and non-techy people alike will get you)
- A “team-first” mindset — you believe better things happen when we build together
Tech We Use (and love):
- Node.js | TypeScript | React / React Native | Next.js
- GraphQL | AWS / Vercel | Serverless | Docker
- SQL | CI platforms | Microsoft + Azure tooling
- Bonus points if you’ve contributed to open-source projects!
Why You’ll Love Working Here
A culture built on trust, creativity, and inclusion
Real flexibility — hybrid working that actually works
A say in the products you build and the tools you use
A genuine chance to grow your skills, your career, and your impact
Sound Like You?
If you’re ready to do work that matters — and have fun doing it — let’s chat.
Send us a message – annie.palmer@wearenumi.com or apply today.
Senior Software Engineer employer: numi
Contact Detail:
numi Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer
✨Tip Number 1
Familiarize yourself with the latest trends in payment technologies and microservices architecture. This knowledge will not only help you during interviews but also demonstrate your genuine interest in the field.
✨Tip Number 2
Engage with online communities or forums related to .NET, Java, or Go. Networking with other professionals can provide insights into the industry and may even lead to referrals.
✨Tip Number 3
Prepare to discuss specific projects where you've successfully implemented scalable solutions. Highlight your problem-solving skills and adaptability in fast-paced environments to align with our expectations.
✨Tip Number 4
Showcase your leadership and mentoring experiences. We value candidates who can inspire and grow others, so be ready to share examples of how you've contributed to team development.
We think you need these skills to ace Senior Software Engineer
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights relevant experience with .NET C#, Java, or Go. Emphasize your problem-solving skills and any experience you have with payment systems or financial technologies.
Craft a Compelling Cover Letter: In your cover letter, express your passion for innovative payment solutions and how your background aligns with the company's mission. Mention specific projects where you've driven innovation or collaborated across teams.
Showcase Your Technical Skills: Include specific examples of scalable, event-driven microservices you've designed or maintained. Highlight your familiarity with agile methodologies and your ability to deliver high-quality code under deadlines.
Prepare for Interviews: Be ready to discuss your experience in detail, particularly around the full development lifecycle. Prepare to share how you've mentored others and contributed to team success in previous roles.
How to prepare for a job interview at numi
✨Showcase Your Technical Skills
Be prepared to discuss your experience with C# .NET Core, Java, or Go. Highlight specific projects where you designed and built scalable microservices, and be ready to explain the technologies you used and the challenges you faced.
✨Demonstrate Problem-Solving Abilities
Expect questions that assess your problem-solving skills. Prepare examples of complex engineering challenges you've encountered and how you approached them. This will show your adaptability in fast-paced environments.
✨Emphasize Collaboration and Communication
Since the role involves working across teams, be ready to discuss your experience collaborating with diverse groups. Share examples of how you communicated effectively to deliver impactful solutions.
✨Familiarize Yourself with Agile Methodologies
Understanding agile practices is crucial for this position. Be prepared to talk about your experience with agile development, how you manage deadlines, and how you ensure high-quality code delivery.
