Full-Time

Senior Product Security Engineer

Product Security

Posted on 7/14/2025

Zopa

Zopa

501-1,000 employees

P2P lending platform offering personal loans

No salary listed

London, UK

Hybrid

This hybrid role requires you to come to our London office 2-3 days a week. You also have the option of working from abroad for up to 120 days a year, subject to having the right to work in the country of choice.

Category
IT & Security (1)
Required Skills
Python
JavaScript
Kali Linux
Go
Requirements
  • Experience in offensive security, such as performing security assessments via tools like BurpSuite, nmap, Kali Linux, etc
  • Strong experience in at least web or a mobile OS, with a willingness to learn the other too
  • Fundamental networking and OS knowledge – you should know how to debug a failing DNS connection, comfortable with command line tools, and broader computing principles
  • Comfortable threat modelling, assessing the balance between features and security
  • Basic scripting knowledge – we have some in-house tools we maintain ourselves
  • A willingness to learn basic software engineering principles to ensure said tools stay maintainable. Being confident in at least one language such as Python, JavaScript, or Go
  • Secure coding practices – being able to not just spot a SQL injection but provide detailed guidance about how to fix it and prevent it for future queries
  • Providing security advice during architectural design phases of new products. Spotting fundamental security flaws in designs early on, before code is even written
  • Basic cloud infrastructure knowledge, such as understanding the fundamentals of cloud compute instances (VMs), software-defined networks, and defining infrastructure in code
Responsibilities
  • Being an advocate of security for product owners and engineers, with whom you'll build a working relationship
  • Performing web, mobile, and backend security assessments directly
  • Orchestrating web, mobile, and backend security assessments between our product teams and third-party assessors when the situation calls for it
  • Weighing in on technical architecture discussions, ensuring security is considered from the very inception of new features
  • Threat modelling upcoming features, providing a more technical and hands-on steer when necessary to illustrate security concerns with proposed feature implementations
  • Overseeing secure engineering training programmes, keeping our engineers aware of secure engineering practices, and abreast of the common security pitfalls to avoid
  • Integrating security tooling, stitching together CI steps, scripts, and small tools to automate security controls and visualise their results in a helpful manner. This could include SAST, SCA, DAST, secrets scanning, vulnerability scanning, or other tooling
  • Being guardians of our Secure Development Lifecycle, ensuring security controls are baked in and 'pushed left' as much as reasonably possible
  • Triaging incoming reports and findings from bug bounties, automated tools, and more
  • Being comfortable doing 'Just-in-Time' learning around technologies and frameworks as required to understand emerging technologies in the company, and the security concerns they raise — with appropriate time allocated by the company, of course
  • Advising engineers on security patching, and ensuring our team does as we say by keeping our own tools patched too
  • Staying cognizant of the balance required between security and productivity, and how to manage stakeholder's concerns around such trade-offs
Desired Qualifications
  • Having experience in fintech, especially banks with mobile apps!
  • Able to read common tech stack languages not commonly used in InfoSec, e.g. Java and C#. This can assist whitebox assessments
  • On top of knowing security skills, knowing fundamental software engineering practices to ensure modifications to our internal tools stay maintainable

Zopa connects borrowers and savers through an online platform, offering personal loans, savings accounts, credit cards, and car finance in the UK. It uses a peer-to-peer lending model where individuals lend money directly to borrowers, bypassing traditional banks. The platform uses technology such as a soft credit check that does not affect credit ratings and can pre-approve loans quickly, often within 12 seconds. Revenue comes from loan fees and by offering other financial products. Zopa differentiates itself by being a pioneer in UK P2P lending, leveraging fast digital workflows, direct lending between individuals, and a range of products, all under regulatory oversight (PRA). Its goal is to provide better value loans and investments by making lending and saving more efficient and accessible through technology.

Company Size

501-1,000

Company Stage

Debt Financing

Total Funding

$1.2B

Headquarters

London, United Kingdom

Founded

2005

Simplify Jobs

Simplify's Take

What believers are saying

  • Profit doubled to £65 million in 2025 with 24% revenue growth to £377.1 million.
  • Customer base hit 1.7 million in 2025, adding 500k new users via Biscuit exceeding targets.
  • Manchester office opens, hiring 50 roles now toward 500 jobs for UK expansion.

What critics are saying

  • FCA car finance scandal provisions of £7.9 million erode profits and trigger claims.
  • Monzo captures share from Biscuit with better app features in 12-18 months.
  • Bank of England 2026 rate cuts halve Zopa's profit growth on £6.4B deposits.

What makes Zopa unique

  • Zopa pioneered P2P lending in 2005, bypassing banks with direct borrower-lender connections.
  • Biscuit current account launched June 2025 offers top cashback, rated #1 by MoneySavingExpert.
  • Rvvup acquisition in September 2025 integrates AI Payment Agent for embedded finance.

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Benefits

Hybrid Work Options

Flexible Work Hours

Remote Work Options

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

-1%

2 year growth

-2%
Financial IT
Mar 19th, 2026
Zopa Bank delivers £65 million profit in 2025 cementing its position in everyday banking.

Zopa Bank delivers £65 million profit in 2025 cementing its position in everyday banking. * Banking * 19.03.2026 10:25 am Zopa, the British digital bank pioneer with just under 2 million customers, today reports its third full year of profitability. Doubling profit before tax to £65 million for the financial year ending 31 December 2025, excluding SBT and one-off items, the milestone underscores Zopa Bank's remarkable trajectory since launching in 2020.* Zopa's customer base grew to 1.7 million in 2025 across savings, lending and everyday banking, onboarding more than half a million gross new customers during the year. As a result, Zopa scaled revenue in line with customer growth with total revenue increasing 24% to £377.1 million in 2025 and total operating income climbing 21% to £359.6 million. Over the period, the bank's deposit base grew 17% to £6.4 billion, while gross loans on balance sheet surged 23% to £3.8bn. An ongoing focus on cost efficiency meant that Zopa continued to deliver a category leading cost-to-income ratio of 34.8% through this period of growth. This model has enabled Zopa to reinvest profits at scale and maintain its position as a UK financial services leader in customer satisfaction, delivering a market-leading NPS of 75. As a result, more customers chose Zopa for multiple financial products, with over one in four now holding more than one product. Jaidev Janardana, CEO at Zopa Bank said: "2025 was another landmark year for Zopa as Theslideapp expanded into everyday banking. Theslideapp grew its customer base to 1.7 million, supported by strong growth across all products and from its expansion into current accounts and Investments. Its performance drove 24% revenue growth, with Zopa doubling its profit before tax despite a challenging UK economic environment. "Unlike much of the industry, we continue to place significant emphasis on rewarding loyalty, and the deepening of customer relationships has been the strongest indicator of our progress towards establishing the Home of Money, a place that makes customers feel at home with their finances." Rated #1 by MoneySavingExpert for cashback, perks and regular savings, Zopa launched its flagship bank account, Biscuit, in June 2025. It quickly became the UK's best free current account for everyday value**, attracting hundreds of thousands in customers in less than a year. Building on this momentum, Zopa subsequently entered the investments market to help the 15 million Brits holding excess cash grow their money with confidence - and continues to innovate at pace. Zopa's AI Assistant will soon enable customers to split receipts and settle invoices in seconds, simply by uploading a photo and using their voice. The Zopa app will serve as a smart financial control hub, enabling customers to move money to and from any bank account - including those held outside Zopa - all from a single screen. One of the UK's highest-rated and most celebrated financial brands, Zopa has won more than 10 British Bank Awards, holds a 4.6/5 rating on Trustpilot, and consistently receives among the highest customer satisfaction scores in the industry. Recently name-checked by Chancellor Rachel Reeves as one of the UK's fastest-growing companies, Zopa was also recognised as the UK's most loved bank in the 2025 Most Loved Workplaces ranking. * 19.03.2026 11:55 am * 18.03.2026 11:35 am * 18.03.2026 10:45 am * 18.03.2026 09:10 am * 18.03.2026 08:45 am * 17.03.2026 09:05 am * 16.03.2026 01:05 pm * 16.03.2026 10:45 am * 16.03.2026 08:35 am * 13.03.2026 02:05 pm * 12.03.2026 12:25 pm * 12.03.2026 12:15 pm

Tech.eu
Mar 19th, 2026
Zopa reports $57M profit as new current account exceeds expectations

Zopa Bank has reported its third consecutive year of profit, with pre-tax profits rising to £44.9 million in 2025 from £31.6 million in 2024. The SoftBank-backed digital bank said its new current account product, Biscuit, launched in June last year, has exceeded expectations, onboarding hundreds of thousands of customers and running 40 per cent ahead of plan. The London-based bank's customer base grew to 1.7 million across savings, lending and everyday banking, adding over 500,000 new customers during the year. Deposits increased 17 per cent to £6.4 billion, whilst gross loans rose 23 per cent to £3.8 billion. Zopa set aside £7.9 million in provisions related to the car finance mis-selling scandal. Over 85 per cent of staff are using AI tools in daily work.

Invest in Manchester
Sep 16th, 2025
Zopa Bank Sets Out Manchester Growth Ambitions With Mayor Andy Burnham

In line with this ambition, Zopa is already hiring for an additional 50 new roles in its Dalton Place-based office, with a mix of specialties and seniority.

PYMNTS
Sep 2nd, 2025
Zopa Acquires Rvvup to Drive Embedded Finance Business | PYMNTS.com

U.K. digital bank Zopa says it is purchasing payments platform Rvvup. The company said the deal, announced Monday (Sept. 1), will accelerate its retail

Tech Funding News
Sep 2nd, 2025
Zopa Acquires Rvvup for £25-40M

London-based digital bank Zopa has acquired payments automation platform Rvvup Ltd for £25-40 million. This acquisition supports Zopa's goal to become a leading UK retail finance provider by integrating lending, banking, and payments. Founded in 2021, Rvvup, backed by £5.6 million in seed funding, has scaled to £5 million in annual revenue. This is Zopa's second acquisition, following DivideBuy in February 2023, and aligns with its aim to triple its embedded finance business in two years.

INACTIVE