Senior Front-End Engineer (React / TypeScript / Next.js)

Our Company

This is Contiant! We are an open banking services provider that specialises in payments initiation and account information services in the EU. We are based in Sofia, Bulgaria. Our aim is to provide payments that are faster, cheaper and more secure than credit cards. Contiant is yet not just another open banking provider, but one that increases merchant conversions while they stay in full control throughout the whole payments journey. And all this complemented with the best in class API and reporting platform. Built from developers for developers.

Join Contiant, where we tackle complex challenges, and relentlessly improve our products while delivering exceptional merchant services. As a crucial member of our development team, you will be responsible for building robust and scalable web applications that enhance the user experience of our financial products.

Contiant is seeking a talented Senior Level Developer to join our dynamic team. As such you will be instrumental in crafting cutting-edge software solutions, leveraging your expertise in technologies such as React, TypeScript and Next.js. If you are passionate about creating innovative and scalable applications, we encourage you to apply.

The Role

We’re looking for a Senior Front-End Engineer to craft modern, performant front-end experiences using React, TypeScript, and Next.js. You’ll own features end-to-end—from design discussions to deployment—and set a high bar for code quality and UX.

What you’ll do

• Collaborate with product managers and backend engineers to design and ship responsive, user-friendly web applications
• Build clean, maintainable, modular, and reusable React + TypeScript components
• Implement state management (e.g., Redux) and robust async data flows
• Integrate with RESTful APIs and partner closely with backend services
• Optimise for performance, reliability, accessibility, and scalability
• Conduct thoughtful code reviews; improve standards, patterns, and developer experience
• Maintain CI/CD pipelines and automated tests to ensure high-confidence releases
• Stay current on best practices and bring ideas that elevate our front-end architecture
• About the stack: React, Next.js, TypeScript, Redux and MUI

What makes you a great fit

• Strong, production-level React, TypeScript & Next.js experience—generally ~2–4 years or equivalent proficiency; we’re flexible on total years
• Solid grasp of front-end fundamentals: responsive design, cross-browser compatibility, web performance, and accessibility
• Experience with state management patterns/libraries and asynchronous programming
• Comfortable integrating REST APIs and handling real-world data/edge cases
• You own outcomes: plan, execute, and deliver with minimal supervision
• You turn product requirements into technical plans, proactively break work down, and unblock yourself
• You debug across the stack when needed and drive issues to closure
• You leave the codebase better than you found it and mentor others by example
• Proficient with Git and GitLab: advanced branching strategies, rebasing, resolving complex conflicts, code review via merge requests, and leveraging GitLab CI/CD
• Familiarity with agile ways of working
• Excellent problem-solving, communication, and collaboration skills
• Fintech experience (VERY strong plus — but not required)

Bonus points

• Comfortable with financial data visualisation and currency precision (formatting, rounding)
• Understanding of risk/fraud signals and observability around money movement
• Built UIs for payments, wallets, settlements, reconciliation, or ledger-like data
• Experience with Axios and react-i18next
• Familiarity with AWS services for front-end delivery and observability

Why Contiant

Join us to build innovative payment solutions that move our mission forward. We offer a collaborative environment, real ownership, and room to grow. If you’re passionate about building scalable, delightful front-end software, we’d love to hear from you.

Apply now and be part of our journey!