Mobile Engineer

Hello. We’re Teya. Teya was founded on a simple belief: local businesses deserve better. They are the cafés, restaurants, salons, shops and entrepreneurs that bring character to our high streets, create jobs and keep communities moving. Yet for too long, financial services has made life harder for them - with clunky tools, poor support and complexity that gets in the way of running a business. Teya exists to change that. We’re building a financial platform for local businesses across Europe - one built around simple tools, thoughtful design and real human support. Our Members rely on us to help them run their business with confidence, and that responsibility shapes the way we work. We move fast. We care about quality. We stay close to the detail. And we believe great performance and genuine hospitality should go hand in hand. If you want to build meaningful products, solve real problems and make a genuine difference for local businesses, we’d love to hear from you Key Responsibilities * Lead the design, development, and delivery of scalable, responsive full stack features for the Business Account portal using React, TypeScript, and GraphQL, with ownership spanning both frontend implementation and integration with backend services. * Work closely with product and design teams to understand merchant needs and translate complex financial workflows—such as transfers, scheduled payments, account management, and Strong Customer Authentication (SCA) flows—into secure, end-to-end user experiences backed by reliable APIs. * Build and maintain data-rich, high-performance interfaces for transaction feeds, balances, statements, and multi-currency views, ensuring efficient data fetching, state management, and seamless interaction with backend services. * Develop and maintain GraphQL schemas, resolvers, and API integrations, ensuring consistency between frontend requirements and backend data models while promoting type safety and end-to-end reliability. * Write clean, maintainable, and well-tested code across the stack, applying strong TypeScript practices and contributing to overall system stability, security, and scalability. * Actively participate in code reviews across frontend and backend contributions, helping establish engineering best practices in a team transitioning from a mobile-first to a full stack, web-capable organization. * Identify and resolve performance bottlenecks, data inefficiencies, and production issues across the full stack, ensuring a smooth, reliable experience for merchant users. * Stay up-to-date with the latest frontend technologies, trends, and best practices, applying them to enhance our merchant-facing web platform. Your Story * 5+ years of professional experience in frontend/web development. * Expert-level proficiency in TypeScript, including advanced type manipulation, generics, and understanding of complex type inference. * Strong proficiency in React.js and its core principles, developed with a type-safe approach. * Experience supporting Backend services in Java and Spring Boot * Extensive experience with Next.js for server-side rendering, static site generation, and API routes, with a focus on TypeScript integration. * Solid understanding of modern JavaScript (ES6+), HTML5, and CSS3. * Experience with state management libraries (e.g., Redux, Context API, Zustand) in a TypeScript environment. * Strong experience consuming GraphQL APIs (e.g., Apollo Client), with an understanding of how to define and use types for API responses. * Strong understanding of web performance optimisation techniques. * Experience with version control systems (e.g., Git). * Excellent problem-solving skills and attention to detail. * Strong communication and collaboration abilities, especially when working within cross-functional teams spanning product, design, backend, and mobile engineering. Differentiators (What Sets You Apart) * Experience in fintech or banking web applications, including secure and compliant interfaces with SCA/2FA, PSD2, and RBAC * Proven ability to build and translate mobile-first products into responsive web experiences * Practical use of AI coding tools (e.g. GitHub Copilot, Claude Code, Cursor) to accelerate development while maintaining code quality * Experience launching and localising web products across multiple European markets, including currency, regulatory, and language requirements Teya is proud to be an equal opportunity employer. We are committed to creating an inclusive environment where everyone regardless of race, ethnicity, gender identity or expression, sexual orientation, age, disability, religion, or background can thrive and do their best work. We believe that a diverse team leads to better ideas, stronger outcomes, and a more supportive workplace for all. If you require any reasonable adjustments at any stage of the recruitment process whether for interviews, assessments, or other parts of the application—we encourage you to let us know. We are committed to ensuring that every candidate has a fair and accessible experience with us.

We’re Capital on Tap 👋 💳 Capital on Tap started because small businesses were underserved. Big banks were slow, their products weren't fit for purpose, and small business owners often couldn't access what they needed. We set out to fix that. Today we're a financial platform - not just a credit card company. We offer a best-in-class business credit card, SME-focused spend management platform, a savings product that hit £1 billion in funds within its first year, and a growing suite of tools and financial products that make running a small business easier.  1,000+ employees, £20bn in annual card spend, 200,000+ customers, 17,000+ Trustpilot reviews averaging 4.7 stars, and we're profitable. We’ve done a pretty good job so far, but we’re just getting started!  📍 Porto Matosinhos | 🏢 2 Days in the Office | €40,000 - €50,000 QA at Capital On Tap 🚀 Our QA team thrives on a culture of shared success, where every voice helps shape the quality of our products. Rather than working in isolation, we are fully integrated into diverse product squads, ensuring that everyone is a valued technical partner. The team is currently driving an "automation-first" testing strategy. It’s a collaborative, supportive environment where we prioritise learning from each other and ensuring that everyone has the opportunity to thrive and grow. What You'll Be Doing 🗃️ * Own manual and automated testing across the SDLC, working closely with Software Engineers and Product Managers to ensure product quality. * Contribute to and expand automated test coverage within an agile team. * Drive continuous improvement through POCs, refining QA processes, tools, and best practices. * Investigate user-reported issues, perform hands-on technical testing, and create, manage, and track bug reports. * Develop deep product and domain knowledge, supporting engineers and promoting shared responsibility for quality. * Effectively prioritise work, manage risks, and escalate issues in a fast-paced environment. Our Values & Culture 🌞 * Just Pilot: We never settle for “good enough”. We pilot new ideas fast, ask questions to figure it out, and scale quickly. * Why Not Today? Fast is as slow as we go - speed and simplicity gives us a competitive advantage. * Be a Buddy: We tap in from day one to help the team, we do the right thing even if it’s hard. * Owners and Dates: We don’t chase people. If you own a task and agree to a date, the expectation is that it gets done. * Feedback: We want our employees to flourish, so we regularly provide direct and constructive feedback. We’re Looking For 🔎 * QA experience across web/mobile applications, covering functional, regression, performance, exploratory, manual, and automated testing. * Understanding of end-to-end impact, risk, dependencies, and pragmatic bug prioritisation to inform QA strategy. * Hands-on experience with test automation tools and frameworks (e.g. Playwright, Selenium, Appium, Postman, RestSharp, xUnit/NUnit) and REST API testing. * Proficiency in C# (or similar OOP languages) and JavaScript/TypeScript, with solid SQL Server querying and scripting skills. * Experience working in CI/CD environments, implementing continuous testing practices across multiple teams. * Highly detail-oriented, methodical, and proactive, with a strong bias for problem-solving, exploratory testing, and taking initiative. Even if you don’t have all of the necessary skills, we still encourage you to apply. Interview Process 🤝  * First stage: 30-minute intro, CV review, and values with Talent Partner * Second stage: 45-minute “Tech Chat” with Team Manager * Final stage: 60-minute Code Pairing + 30-minute Stakeholder Interview with Engineering & Product   Diversity & Inclusion 🌈 We welcome, consider and encourage applications from anyone who shares our commitment to inclusivity. Join us in creating a space where authenticity thrives, and everyone can do their best work. Great Work Deserves Great Perks We try not to take ourselves too seriously (all the time) so we make sure our office is decked out with a pool table, arcade machine, beer tap, and a couple of office dogs thrown in for good measure. Check out our benefits: 🏥 Private Healthcare including dental and opticians services through Vitality ✈️ Worldwide travel insurance through Vitality 🎁 Anniversary Rewards (£250, £500, £750, 4-week fully paid sabbatical) 👛 Salary Sacrifice Pension Scheme up to 7% match 🚘 Octopus EV Salary Sacrifice Scheme 🏖️ 28 days holiday (plus bank holidays) 📖 Annual Learning and Wellbeing Budget 👪 Enhanced Parental Leave 🚲 Cycle to Work Scheme 🚂 Season Ticket Loan 💬 6 free therapy sessions per year 🐶 Dog Friendly Offices 🍫 Free drinks and snacks in our offices Check out more of our benefits, values and mission here.   Other Info 👍Check out our ‘Top Tips’ for interviewing. ✔️Keep updated on new job opportunities by following us on Linkedin. 📧Email careers@capitalontap.com if you have any questions. Excited to work here? Apply! If you’d like to progress your career within our fast growing, profitable fintech then click apply and we will aim to get back to you within 3 working days (during busy periods this could take up to 5 working days.)