Senior Software Engineer | Backend

Apron; Greater London; Hybrid; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Stock options

Pension plan

Health insurance

Parental leave

Deliveroo allowance

29 days holidays

Flexible working hours

Hybrid work in London

Job summary

Apron is hiring a senior backend engineer to build and scale the core product lines like Bill Pay and Apron Card. You’ll work cross-functionally with frontend, product managers and designers to ship features from discovery to production.

We prize JVM Kotlin expertise, scalable relational databases and high-quality, fast code. With 8+ years in a product-led, fast-paced environment, you’ll help design secure, performant systems and mentor others in a growing fintech.

Qualifications

• 8+ years of backend engineering experience in a product-led, fast-paced environment.
• Proficient in JVM languages, especially Kotlin, for server-side development.
• Experience with relational databases at scale.
• Strong focus on code quality and performance.
• Nice to have hands-on Kotlin, Kubernetes, Terraform, and Postgres (GIST indexes, partitioning, replication).

Responsibilities

• Build and scale the backend powering core product lines like Bill Pay and Apron Card.
• Collaborate with Frontend Engineers, Product Managers and Designers to ship features from discovery to production.
• Design financial integrations where security and speed both matter.
• Share experience, drive innovation and raise the bar for the team.

Skills

Backend engineering

Kotlin

Relational databases

Code quality

Performance optimization

Kubernetes

Terraform

PostgreSQL

Tools

Kubernetes

Terraform

PostgreSQL

Job description

About Apron

Small businesses are the backbone of the economy, but the systems they rely on for payments are slow, manual and were never built for them. Apron is fixing that. We digitise and simplify how SMBs manage cash flow: capturing invoices, issuing expense cards, and moving money in one place.

About Apron

Small businesses are the backbone of the economy, but the systems they rely on for payments are slow, manual and were never built for them. Apron is fixing that. We digitise and simplify how SMBs manage cash flow: capturing invoices, issuing expense cards, and moving money in one place.

Founded in 2021, we've grown to ~100 people across the UK, Germany, Spain and raised $50M, backed by Index Ventures, Bessemer Venture Partners, Zinal Grow and Tony Fadell.

Our next phase of growth isn’t incremental. We’re building a category-defining, global fintech business with a clear path to significant revenue scale and international expansion. This phase requires not just a great product but a world-class engineering team.

Our engineering culture

• We build with the customer in mind. Top-tier technology, in service of making their lives genuinely easier.
• We own our work. We plan, break it down, and ship it end to end.
• We embrace the complexity of finance. Money means intricate business logic and real edge cases. Precision matters here.
• We write code we're proud of. Fast doesn't mean sloppy, we build for the long term.
• We use AI where it helps. The best tools available, used to build better products faster.

What You’ll Own

• You’ll build and scale the backend powering our core product lines like Bill Pay or Apron Card and the systems our business depends on like fraud detection.
• You’ll work cross-functionally with Frontend Engineers, Product Managers and Product Designers to ship new features from discovery through to production.
• You’ll design financial integrations where security and speed both matter.
• You’ll share your experience with others, driving innovation, proactively suggesting improvements and raising the bar for the team.

What You’ll Need

• 8+ years of continuous experience as a backend engineer.
• Previous in-house experience working in a product-led + fast-paced environment (startup or Tech company).
• Proficient in JVM-based languages, ideally Kotlin, for server-side development.
• Comfort with relational databases and the trade-offs that come with them at scale.
• Keen attention to code quality, passion for efficient architecture, and commitment to optimising performance.
• Would be a plus if you have:
  • Hands-on Kotlin experience.
  • Kubernetes and Terraform experience.
  • Deep Postgres experience: GIST indexes, partitioning, replication.

What We Offer

• Highly competitive salary + meaningful stock options
• Pension plan with Nest
• Health insurance (including Optical and Dental cover), Life Assurance
• Enhanced parental leave
• Weekly Deliveroo allowance
• 29 days of holidays (on top of Bank holidays)
• Flexible working hours
• Hybrid work 3 days a week in our London (Liverpool Street) offices.
• Cycle to Work scheme, Electric vehicle scheme
• Visa sponsorship (when applicable)

Our hiring process

• Interview with our Recruiting team
• 2 Technical Interviews
• 2 Final Interviews with our Leadership team
• Offer in 24hrs