Staff Back End Engineer, iwoca
Finance Technology
£100-140k
+ Employee equity incentive scheme
Online loans for small businesses
Open for applications
Online loans for small businesses
201-500 employees
Open for applications
£100-140k
+ Employee equity incentive scheme
201-500 employees
Company mission
To fund one million small businesses.
Role
Who you are
- Experience designing and building scalable back-end systems for payments or financial ledgers
- Proficiency in Python, writing clean, efficient, and well-tested code
- Experience designing data models for payments systems, ensuring accuracy, scalability, and maintainability, ideally using PostgreSQL
- Experience architecting highly available systems that process large transaction volumes (10,000+ per day)
- Experience leading projects end to end, from scoping and design through to production
- Experience mentoring engineers and setting technical standards
- Clear, concise written and verbal communication, focusing on outcomes and impact
- Numerical or technical background, ideally with a degree in maths, physics, computer science, engineering, or a related field
Desirable
- Experience with Django
- Experience with infrastructure-as-code and CI/CD pipelines
- Experience with Rust
What the job involves
- You’ll combine deep technical knowledge with business context to help us launch a credit card and scale our financial systems
- The Finance Technology team builds and maintains the payment infrastructure and financial data systems that power iwoca’s growth
- We partner with Finance to build scalable tools and support other product teams to launch new products with the right payment and data foundations
- The team is currently six engineers working closely with a Tech Lead and Product Manager, using Agile methods to ship code frequently and solve complex problems together
- Three of the team work remotely and five are hybrid, based in London
- As a Staff Back End Engineer in the Finance Technology team, you’ll lead the technical design and development of iwoca’s financial data systems, starting with a new credit card ledger — a critical component for product expansion
- You’ll work with stakeholders across Finance to shape architecture, ensure accuracy and scalability, and mentor engineers while staying hands-on with code
- You’ll work on engineering projects that give you scope to own architecture, solve complex problems, and influence how iwoca’s financial systems evolve, such as:
- Credit card ledger: Scale a new ledger system to process hundreds of thousands of daily transactions with precision and resilience, enabling accurate real-time reporting and reconciliation
- Payments infrastructure: Extend and improve the systems that power real-time payments, ensuring reliability, scalability, and seamless integration with new products
- Financial data systems: Build and maintain services that provide Finance, Accounting, and Capital Markets teams with accurate, timely data for reporting, planning, and compliance
- Technical leadership: Guide engineers through complex design decisions, mentor team members, and set standards that raise quality, documentation, and performance across the group
Salary benchmarks
Our take
UK SMEs are the backbone of a complex economy that is constantly changing, so the need for fast and responsive access to finance is becoming more and more important to ensure their success and growth. iwoca allows SMEs access to business loans in less than a minute, with its API and business marketplace partnerships.
With offerings like iwoca's, gone are the days where waiting up to eight weeks for a loan decision was viable. Its simplified business loans of £1,000 - £500,000 come with no fees attached, and applying online takes no more than five minutes. The ready availability of iwoca loans gives business owners a level of certainty, so that they can make instant decisions to help their business grow.
iwoca has made a number of partnerships with other players in the business finance space, including an impressive industry-first invoice checkout integration with QuickBooks. Funding raised by the company, which is now operating at net profitability, will enable it to meet a recent surge in demand for corporate loans and offer more to larger SMB businesses. And the company has made several billion in funding available to over 100,000 businesses since launching, positioning itself as a leading European fintech.
Steph
Company Specialist at Welcome to the Jungle
Insights
Company
Employee endorsements
Opportunities to learn
"Great opportunities available to learn from both individuals through shadowing, and teams through presentations and even secondment opportunities -..."
Funding (last 2 of 8 rounds)
Aug 2025
$15.8m
SERIES D
Aug 2019
$13.4m
GRANT
Total funding: $113.5m
Company benefits
- Work where you work best: Twice a year we rent houses in places like Sicily and the French Alps where each team can work together for a week poolside. We champion flexible working in all our teams
- Invest in iwoca: We want people to be invested in iwoca's success so after six months you'll be awarded share options
- Keep yourself healthy: We offer comprehensive health insurance and cash plans. You'll also get gym discounts and we host yoga classes in the office every week
- Start (and end) your day right: Each floor of iwoca HQ has a fully stocked fridge for breakfast and every Friday we unwind with beers and wine
- Life-work balance: We know your life outside of work comes first. We offer enhanced maternity and paternity leave for new parents plus a nursery benefit. We also have unlimited unpaid leave
- Learning and development: Whether you want to learn to code, experiment with motion design, or beat cognitive biases, you'll have time and budget to invest in your professional development
Company values
- Motivated: Going to work shouldn't feel like a slog, so we want everyone in the team to personally care about what they're working on. We stay motivated by celebrating our wins, learning from our mistakes, and always looking for new gaps to step into
- Smart: At iwoca being smart isn't about what you know, it's about how you think. Smart thinking means looking at each problem by asking ‘why’ first, then figuring out ‘how’
- Humble: We know all ideas are flawed, all code has bugs, and everyone makes mistakes - it’s how we learn. For us, being humble means you question yourself first, rather than your team
- Growth Mindset: We think there's always a better way to solve a problem. So we never let ourselves get comfortable with being good enough
Company HQ
Fitzrovia, London, UK
Articles
Leadership
Christoph Rieche
(Co-Founder & CEO)Previously spent 7 years at Goldman Sachs as a Vice President before co-founding iwoca in 2011.
Joost Versteeg
(CMO)Joost initially joined iwoca in 2017 as an Intern. Since then, they have held a number of roles, from Growth Analyst to Head of Commercial Strategy and became CMO in 2024.
People progressing
Serita joined as a Customer Onboarder, before moving into the Broker Team. Most recently they have been promoted to Partnership Manager.
Leo joined in 2018 as a Client Onboarder. Since then, they have worked in a number of roles and now serve as the Product Manager.
Jenny originally joined the Client Onboarding team and now leads the Customer Success department for the German business.
Diversity, Equity & Inclusion at iwoca
- We work hard to make iwoca a place where everyone feels welcome, where you can confidently be yourself. We understand that diversity isn't an optional add-on, it's the core ingredient of what makes us great.
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