
Capital on Tap · Porto
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 sm...
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!
🏡🏢This is a hybrid role, our engineering teams work from our Matosinhos office Office 2 days per week.
Salary: €55,000-70,000
This is a multiple-headcount role, so please don't be put off if you've seen it advertised for a while.
What You’ll Be Doing
We’re looking for Senior Full stack Engineers to help us build the best credit card and payment products for small businesses. If
you’re looking for an environment where you’re given the freedom to make empowered decisions, research new technologies, and
learn/share knowledge with your peers. Then keep on reading!
work, they feel great to use
We’re Looking For 🔎
Our Tech Stack
Interview Process 🤝
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
🏥 Private Healthcare through AdvanceCare
🎁 Anniversary Rewards (€280, €570, €860, 4-week fully paid sabbatical)
🚘 Paid Car Parking
🏖️ 36 days holiday (inclusive of public holidays with public holidays carried over if they fall on a weekend)
📖 Annual Learning and Wellbeing Budget
💬 6 free therapy sessions per year
🍫 Free drinks and snacks in our offices
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.)
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 | €50,000 - €65,000 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. 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 Check out our benefits: 🏥 Private Healthcare through AdvanceCare 🎁 Anniversary Rewards (€280, €570, €860, 4-week fully paid sabbatical) 🚘 Paid Car Parking 🏖️ 36 days holiday (inclusive of public holidays with public holidays carried over if they fall on a weekend) 📖 Annual Learning and Wellbeing Budget 💬 6 free therapy sessions per year 🍫 Free drinks and snacks in our offices 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.)
About the company Raidium is building a foundation Model for precision medicine in radiology. Our first release, Curia is already state of the art. Our model is embedded in a new type of solution for the radiologist that enables a revolutionary AI-native workflow. Thanks to a 16M€ seed round raised in November 2024, Raidium is expanding its team. The team The founders of Raidium are experts in radiology and machine learning from Owkin, bringing together extensive experience from both fields. Paul Herent, CEO, is a radiologist and former interne des hôpitaux de Paris, with a Cogmaster (ENS) and PSL background, and has published pioneering research on deep learning in radiology. Pierre Manceron, CTO, is a Centrale Paris engineer specialized in Applied Mathematics and Machine Learning, who previously led machine learning projects at Owkin. Sebastian Schwarz, COO, holds a double degree in X-HEC Data Science & Business, who previously worked as a Strategy & Operations Director at Owkin, where he developed Owkin’s strategic vision and operational agency. Our team brings together strong academic foundations (Polytechnique, Ponts, MVA) and deep medical, AI, and business experience from leading medical and tech companies such as Owkin, Cardiologs, Datadog, and Meta, all united by a mission to revolutionize radiology through cutting-edge technology. The role As a Full-stack Software engineer at Raidium, play a pivotal role in developing the Raidium product and integrating Machine Learning models. Design, implement, and maintain both front-end and back-end components of Raidium product, involving serving ML models and manipulating radiological images Collaborate with ML Engineers to integrate advanced ML/Deep Learning models into the platform, ensuring the system is highly accurate and efficient. Build the infrastructure and pipelines to support rapid growth in users and data volume without compromising performance. Enforce the best practices to ensure code quality and system soundness: automatic testing, linting, typing… You will work with the R&D team, composed of Software engineers and ML Engineers and you will be managed by Alexandre Blondin, our Lead Software Engineer.
This is an opportunity in the exciting and fast-growing transportation technology industry. Public transit is being transformed from a system of static, scheduled fixed-routes, to a dynamic on-demand network, and you will be one of the pioneers shaping this transformation. As a Senior Full Stack Developer at RideCo, you will play a key role in shaping the architecture, design, and delivery of our industry-leading ride sharing platform. You will own features end-to-end across the stack, mentor team members, and drive technical decisions that directly influence product direction. This role is ideal for a developer who thrives in a fast-paced environment and is motivated by building impactful, scalable solutions for real-world challenges. Your day-to-day responsibilities will include: Backend Development: * Design, build and maintain robust, scalable APIs using Django to power web and mobile applications. * Implement data models and business logic to manage complex interactions and handle high transaction volumes efficiently. * Ensure backend systems are secure, reliable, and optimized for performance. Frontend Development: * Develop dynamic, user-friendly interfaces with Angular, ensuring seamless user experiences across desktop and mobile platforms. * Create reusable UI components and implement responsive designs that adapt across different devices and screen sizes. * Optimize front-end performance for fast load times and smooth interactions. Mobile Application Development: * Design and develop hybrid mobile applications using Ionic for Android and iOS platforms. * Enhance mobile app functionality with new features while ensuring cross-platform compatibility. * Collaborate with the design team to create visually appealing and intuitive mobile user interfaces. Collaboration and Communication: * Work closely with product managers, designers, and other developers to translate business requirements into technical solutions. * Take ownership in sprint planning, daily stand-ups, retrospectives and cross-team collaboration to ensure alignment and timely delivery. * Provide technical mentorship and guidance to junior and mid-level developers. Testing and Maintenance: * Write unit, integration, and end-to-end tests to ensure code quality and system stability. * Perform debugging and troubleshooting to resolve issues across the stack quickly. * Maintain and enhance existing codebases, ensuring they stay up-to-date with modern practices and technologies. Continuous Improvement: * Lead code reviews to raise the bar for code quality and team knowledge. * Stay ahead of industry trends and recommend new tools, frameworks and processes. * Contribute to improving team workflows, tools, and processes for greater efficiency. Your Toolbox / What You’ll Master: At RideCo you’ll get a chance to play, learn, and build with the following tools and technologies as part of a cross-functional team that is the world’s foremost innovator in on-demand transit software. * Languages: Python, JavaScript/Typescript (Angular) * Frameworks: Django, Flask * Web & Mobile: Ionic, hybrid apps for Android and iOS * Infrastructure: AWS, Terraform, Redis, PostgreSQL, Celery, RabbitMQ * Monitoring & Analytics: Prometheus, Grafana, Elasticsearch, Kibana * Development Practices: Agile, CI/CD, Jenkins Qualifications and Experience: * Degree in Computer Science, Software Engineering, or a related discipline. * 5+ years of professional software development experience, with at least 3+ years in a senior role * Proven expertise in building and maintaining responsive web applications. * Strong experience designing, building, and maintaining RESTful APIs. * Solid understanding of HTML5, CSS3, and modern JavaScript (ES6+). * Experience developing hybrid mobile applications using Ionic. * Proficiency in Python (Django or Flask) and Angular frameworks. * Experience with databases such as PostgreSQL and Redis. * Familiarity with cloud services (AWS, EC2, RDS). * Knowledge of Agile methodologies and CI/CD processes. * Excitement for learning new technologies and solving complex problems. 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If you require special accommodation to complete any portion of the application or interview process, please mention this in your application. #Li-Hybrid Why is this role open? Existing Vacancy RideCo is committed to a fair and transparent recruitment process. We do not use artificial intelligence (AI) or automated decision-making tools to screen, evaluate, or select candidates. All applications are reviewed and assessed by our hiring team.