Posted May 13, 2026
Sr Python Developer
At Modulr, our vision is a world where all businesses are powered by embedded payments. Modulr enables businesses, from SMEs to Enterprise, initially across the UK and Europe to efficiently pay-in, collect and disburse funds instantly via a range of payment schemes, accounts, and card products. We have created an industry-leading API platform with comprehensive online tools and access, to meet the demands of daily business payments. We have two routes to market. Our Core Business Payments product allows customers in any sector to connect to us and our expanding network of accounting and payroll platforms, including Sage, Xero, BrightPay and IRIS to automate payments. Our Vertical Solutions targets a growing range of industry verticals which directly connect their IT platforms to our APIs and webhooks. We solve complex payment problems for hundreds of clients in a range of industries, including Travel, Lending, Wage Advance, and Investment & Wealth. We are deeply integrated into the payment eco-system. In the UK, we are direct participants of Faster Payments and Bacs. Modulr hold settlement accounts at the Bank of England. Our payment network connectivity includes CHAPS, Open Banking, SEPA, SWIFT and account issuance in multiple currencies. We are principal issuing members of Visa and Mastercard schemes across UK and Europe. Our regulatory permissions and governance structure are the foundations of our business. We are regulated and supervised as an Authorised Electronic Money Institution (AEMI) in the UK by the Financial Conduct Authority and in the Netherlands by De Nederlandsche Bank. Our founding team has a wealth of experience in the payments industry and growing successful businesses. Modulr is backed by the venture arms of payments giants PayPal and FIS, as well as growth investors Blenheim Chalcot, General Atlantic, Frog Capital and Highland Europe. Modulr now has over 400 employees spread globally across offices in London, Edinburgh, Amsterdam, and Mumbai.
At Modulr we are focused on building autonomous squads that are focused on working in the best possible way. We operate in a tribes and squad model with each area focused on a particular growth area. Each squad is small and cross-functional. We have big ambitions and have many interesting challenges ahead. Our strategy is to provide our customers with seamless connectivity into payment schemes both domestically and overseas no matter where they're based. Specific duties
Depending on the project, you will need to be comfortable doing the following:
Design, develop, analyse, document and support testing of products, systems or subsystems
Coordinate with other teams at sub-system and system level to identify software needs and solutions
Improve engineering standards, tooling, and processes
Develop and execute test procedures for software
Proactively identify issues, bottlenecks, gaps, or other areas of concerns or opportunities and work to either directly affect change, or advocate for that change
Work in an agile environment - Scrum or Kanban
Document best practices, guides, systems design, reference architectures and implementations
Participate in design and code reviews
Contribute to the evolution of our architecture to make it more flexible and easier to use
About you
Technical knowledge required
Web Frameworks: Proficiency in Python web frameworks like FastAPI or Django. - Database Management: Thorough understanding of database systems (e.g., PostgreSQL, MySQL) and concepts like triggers, indexing, and query optimization. - Distributed Systems: Familiarity with systems like Redis and Kafka. - Front-End Skills: Basic to intermediate knowledge of front-end technologies, including HTML, CSS, and JavaScript. Familiarity with frameworks like React or Vue.js is a plus. - Problem-Solving: Proven ability to diagnose, debug, and resolve complex technical issues efficiently. - Experimentation: be it at work or a side project be able to demonstrate some experience using LLMs and building agents
Version Control: Experience with Git and collaborative version control workflows. - Collaboration: Excellent communication skills and ability to work effectively in a team. - Autonomy: Ability to work independently and take ownership of tasks and projects. ModInclusion
At Modulr, we are working hard to build a more positive diverse and inclusive culture that helps everyone to feel they belong and can truly bring their whole self to work. Not only is it the right thing to do for everyone in the Modulr team, it’s also the right thing to do for our business, the community we operate in and attracting future talent. As part of our approach, we actively welcome applications from candidates with diverse backgrounds.
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