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Full Stack Engineer - Fraud Team

Full Stack Engineer - Fraud Team

Hybrid in London, UK

The company

Fast, flexible finance empowers small businesses to manage their cash flow better and seize opportunities - making their business and the economy stronger as a whole. At iwoca, we do just that. We help businesses get the funds they need, when they need it, often within minutes. We’ve already made several billion in funding available to more than 100,000 businesses since we launched in 2012, and positioned ourselves as a leading Fintech in Europe. 

Our mission is to finance one million businesses. We’ll get there by continuing to make our finance ever more relevant and accessible to more businesses by combining cutting-edge technology, data science, and a 5-star customer service.

The team

The Fraud team is a new team within iwoca, and owns iwoca’s strategy and tech systems against fraud. The team balances robust fraud prevention with an exceptional customer experience and strong conversion rates.

The team is growing, and currently consists of a principal full-stack engineer and a Team Lead.

The role

We need a full-stack engineer to join the growing Fraud team, to help significantly restructure and simplify iwoca’s fraud systems. This is a high-growth role, with a view that you will grow to take on technical leadership of the team.

Ownership and influence

  • Design and build iwoca’s new fraud system, to achieve a balance between fraud prevention and customer experience.

  • Take ownership of the solutions that feed into this system, covering both in-built capabilities and third-party integrations.

  • Use data to identify opportunities and measure improvements to our systems and processes.

Collaboration

  • Work with product, analytics and strategy team members to ensure technical solutions align with iwoca’s overall fraud strategy.

  • Collaborate with engineers within other parts of iwoca, such as our Operations, Customer Funnel, and Credit Risk teams, to drive fraud tech changes forwards.

Growth and progression

  • Progress to becoming the team’s technical lead within 6-9 months.

The requirements

Essential:

  • Back-end development experience, ideally with Python.

  • Front-end development experience with TypeScript.

  • Experience with Django, PostgreSQL, and designing, building, and managing relational databases.

  • Excellent communication skills, with the ability to translate business needs into effective technical solutions.

Bonus:

  • Experience working with third-party integrations.

  • React framework experience.

  • A strong numerical academic background, i.e. maths, physics, computer science, engineering, or similar.

  • An understanding of data analysis and statistics.

The salary

We expect to pay from £60,000 - £70,000 for this role. But, we’re open-minded, so definitely include your salary goals with your application. We routinely benchmark salaries against market rates, and run quarterly performance and salary reviews. 

The culture

At iwoca, we prioritise a culture of learning, growth, and support, and invest in the professional development of our team members. We value thought and skill diversity, and encourage you to explore new areas of interest to help us innovate and improve our products and services.

The offices

We put a lot of effort into making iwoca a great place to work:

  • Offices in London, Leeds, Frankfurt, and Berlin with plenty of drinks and snacks.

  • Events and clubs, like bingo, comedy nights, yoga classes, football, etc.

The benefits

  • Flexible working.

  • Medical insurance from Vitality, including discounted gym membership. 

  • A private GP service (separate from Vitality) for you, your partner, and your dependents.

  • 25 days’ holiday, an extra day off for your birthday, the option to buy or sell an additional five days of annual leave, and unlimited unpaid leave. 

  • A one-month, fully paid sabbatical after four years.

  • Instant access to external counselling and therapy sessions for team members that need emotional or mental health support.

  • 3% pension contributions on total earnings.

  • An employee equity incentive scheme. 

  • Generous parental leave and a nursery tax benefit scheme to help you save money.

  • Electric car scheme and cycle to work scheme.

  • Two company retreats a year, we’ve been to France, Italy, Spain, and further afield.

And to make sure we all keep learning, we offer:

  • A learning and development budget for everyone.

  • Company-wide talks with internal and external speakers.

  • Access to learning platforms like Treehouse.

Useful links:

iwoca Glassdoor Company Review
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iwoca DE&I Review
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CEO of iwoca
iwoca CEO photo
Christoph Rieche
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Average salary estimate

$65000 / YEARLY (est.)
min
max
$60000K
$70000K

If an employer mentions a salary or salary range on their job, we display it as an "Employer Estimate". If a job has no salary data, Rise displays an estimate if available.

What You Should Know About Full Stack Engineer - Fraud Team, iwoca

Join iwoca as a Full Stack Engineer on the Fraud Team in London, where you will play a key role in creating innovative financial solutions for small businesses. At iwoca, we believe that fast and flexible finance can empower businesses to manage their cash flow more effectively and seize opportunities as they arise. With our cutting-edge technology and data science expertise, we have provided billions in funding to over 100,000 businesses since our inception in 2012. As part of our new Fraud Team, you'll have the opportunity to reshape our fraud systems, balancing robust prevention measures with an exceptional customer experience. This position allows you significant ownership as you design and build iwoca's new fraud system, collaborating with various internal teams to align technical solutions with our broader fraud strategy. Your technical expertise in Python for back-end development and TypeScript for front-end development, along with experience in Django and PostgreSQL, will be essential for this role. We are looking for someone who is driven and eager to progress to a technical leadership position. At iwoca, our culture emphasizes growth, support, and continuous learning, ensuring that you have access to development budgets, mentoring opportunities, and a vibrant workplace atmosphere. If you're ready to make an impact while enjoying the benefits of flexible working, generous leave, and team retreats, apply now to take your career to the next level!

Frequently Asked Questions (FAQs) for Full Stack Engineer - Fraud Team Role at iwoca
What are the primary responsibilities of a Full Stack Engineer on the Fraud Team at iwoca?

As a Full Stack Engineer in the Fraud Team at iwoca, your primary responsibilities include designing and building a new fraud system that balances prevention and customer experience. You will take ownership of integrating both in-built capabilities and third-party solutions while using data to identify opportunities for improvement. Collaboration with various internal teams such as product, analytics, and engineering to align technical solutions with iwoca's fraud strategy is crucial.

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What qualifications are required for the Full Stack Engineer position at iwoca?

To qualify for the Full Stack Engineer position at iwoca, candidates should possess back-end development experience, preferably with Python, and front-end experience with TypeScript. Experience with frameworks like Django and PostgreSQL is essential, along with strong communication skills to effectively translate business needs into technical solutions. Bonus qualifications include familiarity with third-party integrations and experience with the React framework.

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What career growth opportunities exist for Full Stack Engineers at iwoca?

At iwoca, Full Stack Engineers have significant career growth opportunities. You will be joining a growing Fraud Team where after 6-9 months of performance, you will have the chance to evolve into a technical leadership role. The company also prioritizes professional development, offering budgets for learning and access to talks that enhance your knowledge and skills.

Join Rise to see the full answer
How does iwoca support work-life balance for Full Stack Engineers?

iwoca emphasizes work-life balance for Full Stack Engineers by offering flexible working options and generous holiday allowances, including an extra day off for your birthday and the possibility to buy or sell additional leave. Additionally, the company provides a one-month fully paid sabbatical after four years to recharge and follow personal interests.

Join Rise to see the full answer
What benefits package does iwoca offer to Full Stack Engineers?

The benefits package for Full Stack Engineers at iwoca is comprehensive, including medical insurance, a private GP service, a pension scheme with contributions, and an employee equity incentive. Moreover, you can enjoy a robust learning and development budget, along with unique perks like company retreats and wellness programs.

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Common Interview Questions for Full Stack Engineer - Fraud Team
How can you design a fraud prevention system that maintains a good customer experience?

When answering this question, focus on your ability to balance security measures with user experience. Discuss strategies such as using data analytics to monitor and predict fraudulent activities while implementing user-friendly verification processes, thus ensuring safety without sacrificing convenience.

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What experience do you have with back-end technologies, particularly Python?

Highlight your practical experience in Python, focusing on projects where you successfully utilized it within a full-stack environment. Discuss any frameworks associated with Python, such as Django, and explain how you leveraged these technologies to solve complex problems.

Join Rise to see the full answer
Can you describe a time when you collaborated with cross-functional teams on a project?

Share a specific example where collaboration was key to project success. Emphasize your role, the teams you worked with, and how communication contributed to achieving the project’s objectives effectively, showcasing your collaborative skills.

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How do you prioritize tasks when working on multiple projects?

Discuss your strategies for time management, such as utilizing project management tools or methodologies like Agile. Provide examples of how these methods have helped you stay organized and focused while delivering quality work on time.

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What strategies do you use to stay up-to-date with emerging technologies?

Explain your methods for keeping current with tech trends, such as following industry blogs, participating in forums, attending webinars, or enrolling in courses. This shows your commitment to continual learning, which is vital in a dynamic field like tech.

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How would you handle a situation where you disagree with a team member about a technical solution?

Demonstrate your problem-solving and communication skills by discussing your approach to conflict resolution. Highlight the importance of listening and finding common ground, while also backing your arguments with data-driven insights for effective debates.

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Have you ever worked with third-party integrations? If so, how did you ensure they aligned with project goals?

Share your experience with third-party integrations, detailing specific tools or APIs you have implemented. Discuss how you assessed the impact of these integrations on overall project goals and ensured compatibility with existing systems.

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What challenges have you faced while working with databases, and how did you overcome them?

Talk about specific database challenges, such as optimizing query performance or managing data integrity. Discuss the solutions you implemented and the impact of your actions on the project, showcasing your problem-solving abilities.

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How do you approach user feedback when developing features?

Emphasize your commitment to user-centered design by explaining how you gather and analyze user feedback to inform feature development. Discuss the importance of iterative development and adjustments based on real user experiences.

Join Rise to see the full answer
What is your understanding of statistical analysis, and how do you apply it in your work?

Detail your knowledge of statistical concepts and describe how you apply data analysis to optimize system performance. Mention specific tools or software you use, and give concrete examples of how data-driven decisions have enhanced project outcomes.

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iwoca allows small businesses to access the type of short-term funding previously only available to their larger peers. From taking advantage of new trade opportunities to bridging cashflow gaps, we believe flexible access to finance is crucial to...

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March 26, 2025

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