Senior Fullstack Engineer (Cards)

We're looking for a Senior Full Stack Engineer to join our new, rapidly growing Cards team. In this role, you'll work on innovative fintech products, helping to solve customer problems by leveraging data and an entrepreneurial spirit. We're looking for someone who is ever-curious and passionate about continuous learning, who can identify and use the right tools for the job, regardless of language or framework.

Responsibilities

Lead the design and delivery of complex features for customer-facing web applications; Drive frontend development using React/VueJS and backend development with Python; Collaborate with data engineers to design, build, and optimize robust data pipelines for analytics and machine learning; Own the full product lifecycle, including development, maintenance, monitoring, alerting, and participating in on-call rotation as required; Mentor junior engineers and champion technical excellence; Collaborate cross-functionally to deliver impactful solutions; Contribute to the technical roadmap, identifying opportunities for innovation; Ensure code is testable with good test coverage; Stay up-to-date with emerging technologies

Requirements

Bachelor's or Master's degree in Computer Science or equivalent experience; 5+ years of fullstack development experience, with a focus on high-performance web applications, modern frontend frameworks (React/VueJS), and microservices architectures; Previous Cards (Card Payment Systems) highly desirable; Proficiency in Python3, REST APIs, FastAPI, or similar technologies; Strong understanding of architecture, design patterns, and building scalable, testable code (unit & integration tests); Comfortable with containerization, monitoring, and cloud infrastructure; Used to working in a fast-paced environment and a self-starter who can autonomously drive complex projects; Excellent communication and collaboration skills in English; Experience in FinTech, banking, or related regulated sectors, with a strong understanding of financial systems; Hands-on experience with event-driven architectures and event sourcing

Nice to have

Previous Cards (Card Payment Systems) experience; Experience working with AI tools like Claude, including prompt engineering, building AI-assisted workflows, or integrating LLMs into production applications; Working knowledge of Terraform; Experience with Mobile Development, ideally in React Native