Senior Software Engineer - Backend
Senior Software Engineer - Backend

Senior Software Engineer - Backend

Full-Time 60000 - 80000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Build innovative billing features and develop AI-powered workflows for modern companies.
  • Company: Fast-growing B2B FinTech with a small, dynamic team.
  • Benefits: Competitive salary, flexible work environment, and opportunities for real impact.
  • Other info: Join a small team where your contributions truly matter.
  • Why this job: Shape the product and architecture while owning critical revenue systems.
  • Qualifications: Strong backend experience and comfort in fast-paced, ambiguous settings.

The predicted salary is between 60000 - 80000 £ per year.

We’re working with a fast-growing B2B FinTech building billing infrastructure for modern companies. Small team, high ownership, and real impact, you’ll shape both the product and core architecture.

What You’ll Work On:

  • Build end-to-end product features used daily
  • Develop AI-powered workflows for approvals and collections
  • Scale billing infrastructure to handle 10x growth
  • Own revenue-critical systems where reliability matters

What You’ll Need:

  • Strong backend experience across any language and be happy to work with Kotlin moving forwards
  • Experience with distributed systems
  • Focus on reliability and performance
  • Comfortable in fast-moving, ambiguous environments
  • Real ownership in a small team
  • Strong mix of product + deep engineering challenges

Senior Software Engineer - Backend employer: Atarus

Join a dynamic and innovative B2B FinTech company where your contributions as a Senior Software Engineer will directly influence the development of cutting-edge billing infrastructure. With a small, agile team, you'll enjoy a culture of high ownership and collaboration, alongside opportunities for professional growth and the chance to work on impactful projects that drive real change in the industry.
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Contact Detail:

Atarus Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Software Engineer - Backend

✨Tip Number 1

Network like a pro! Reach out to folks in the FinTech space, especially those who work at companies you're interested in. A friendly chat can open doors and give you insights that job descriptions just can't.

✨Tip Number 2

Show off your skills! If you've got a GitHub or portfolio, make sure it's up to date with your best projects. We want to see your backend magic in action, especially anything related to distributed systems or billing infrastructure.

✨Tip Number 3

Prepare for the interview by diving deep into the company's tech stack. Familiarise yourself with Kotlin and any other tools they use. We love seeing candidates who are genuinely excited about the tech they’ll be working with!

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we’re always on the lookout for passionate engineers ready to take ownership and make an impact.

We think you need these skills to ace Senior Software Engineer - Backend

Backend Development
Kotlin
Distributed Systems
Reliability Engineering
Performance Optimisation
Product Ownership
Team Collaboration
Adaptability in Ambiguous Environments

Some tips for your application 🫡

Show Your Passion for Backend Development: When you’re writing your application, let us see your enthusiasm for backend development shine through. Share specific projects or experiences that highlight your strong backend skills and how they relate to the role we’re offering.

Tailor Your Application: Make sure to customise your application to fit our job description. Highlight your experience with distributed systems and any work you've done in fast-paced environments. We want to see how you can bring real ownership to our small team!

Be Clear About Your Technical Skills: We’re looking for someone with a solid background in various programming languages, especially Kotlin. Don’t just list your skills; explain how you’ve used them in past projects. This helps us understand your depth of knowledge and how you can contribute to our billing infrastructure.

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates. Plus, it shows us you’re keen to join our team!

How to prepare for a job interview at Atarus

✨Know Your Tech Stack

Make sure you’re well-versed in backend technologies, especially Kotlin, as it’s a key part of the role. Brush up on your experience with distributed systems and be ready to discuss how you've tackled reliability and performance challenges in past projects.

✨Showcase Your Problem-Solving Skills

Prepare to share specific examples of how you've built end-to-end product features or scaled infrastructure in previous roles. Highlight any AI-powered workflows you've developed, as this aligns with what the company is looking for.

✨Emphasise Ownership and Impact

Since this role involves real ownership in a small team, be ready to discuss times when you took charge of a project or system. Talk about the impact your contributions had on the product and how you navigated ambiguous situations.

✨Cultural Fit Matters

Research the company culture and values. Be prepared to discuss how you thrive in fast-moving environments and how your approach aligns with their mission. This will show that you’re not just a technical fit but also a cultural one.

Senior Software Engineer - Backend
Atarus

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