Staff Back End Engineer, iwoca
Finance Tech Team
£90-120k
+ Share Options
Online loans for small businesses
Job no longer available
Online loans for small businesses
201-500 employees
Job no longer available
£90-120k
+ Share Options
201-500 employees
Company mission
To fund one million small businesses.
Role
Who you are
- Experience leading large-scale initiatives in complex business domains
- Has been responsible for a large system, including critically assessing weaknesses and delivering an architectural vision
- Excels in engaging stakeholders and developing a deep business understanding to drive decision-making
- A strong numerical or technical background, ideally with a degree in maths, physics, computer science, engineering, or a related field
Desirable
- Experience mentoring junior engineers and raising the bar on code quality across a team
- Experience in finance, financial technology, payments, or accounting
- Experience with our technologies: Python, Postgres, Pandas/Polars, RabbitMQ, Rust
What the job involves
- You’ll be building flexibility and scalability into our product offering, payment systems and financial data pipelines
- The Finance tech team works closely with our CFO, Head of Capital Markets and Financial Operations Lead
- Our team’s mission is to enable growth through seamless customer payments and reliable financial data
- Frictionless payments are core to iwoca’s excellent customer service
- Financial data is used by Finance, other business stakeholders as well as investors, so it is crucial it is up-to-date and accurate
- The Finance tech team has a Tech Lead, PM and six developers, predominantly back-end, although we have been becoming more full-stack this year
- We follow Agile-inspired processes, using continuous integration and delivery, so that features go live in days or weeks, not months or years
- Lead projects to solve our most technically challenging business problems
- Write high quality code that is an example to other developers, and improve overall code quality through detailed code reviews
- Proactively identify weaknesses in our infrastructure and systems. You will lead efforts to strengthen and optimise our technology stack, ensuring it is scalable, secure, and future-proof
- Build relationships with stakeholders across the Finance team and influence the business domain
- Drive architectural improvements across the platform, in collaboration with other tech leads, to build a cohesive platform
- Mentor junior engineers, fostering a learning environment that encourages growth and innovation within the team
- Develop a strong business context around payments, accounting and financial metrics, which you can apply to your work
- Research emerging technologies: you will recommend and lead the adoption of new technologies that provide a competitive edge and improve operations
- Perform detailed technical scoping and prototyping to support the Product Manager in feasibility testing and decision-making
- The projects:
- Payment providers: We will be integrating several new payment partners to facilitate payments to and from our customers. Each new partner provides an opportunity for refactoring to make our systems more scalable and steer our architectural vision
- Loan features: We have new loan product features planned, building on previous additions like revenue-based repayments, interest-only periods, and government guarantees. Feature work will involve updates to our Rust-based loan calculators, data models, and data warehouse
- Data warehouse improvements: Improving the availability of data and the speed of ETL pipelines to provide analysts and other business stakeholders with effortless access to up-to-date financial data. This will involve designing new data tables and pipelines as well as enhancing existing ones
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
$15.6m
SERIES D
Aug 2019
$13.2m
GRANT
Total funding: $112.5m
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.
Share this job
View 58 more jobs at iwoca