Job Information
Wallester Software Engineer - Frontend in Tallinn, Estonia
About us
Are you looking for an exciting opportunity to join a fast-growing fintech company that is revolutionizing the payment industry? Do you want to work with cutting-edge technologies and a talented team of professionals? If yes, then Wallester AS might be the perfect place for you! Wallester AS is an Estonian licensed payment service provider that develops financial digital technology and issues VISA cards. Since 2018, we have been an official Visa partner and Visa FinTech Fast Track Member issuing physical and virtual cards of any type: debit cards, credit cards, prepaid cards, and cards for business. Our distinctive advantage is a unique REST API created by our in-house development team. Easily integrated with any platform, it allows you to launch your card program in no time! We are looking for passionate and driven individuals who share our vision of creating truly high-quality and profitable products for our clients.
About the role
As a Frontend Software Engineer at Wallester, you will own the user-facing systems that power our fintech platform.
Our frontend engineers are not just feature implementers - they design, build, and evolve complex applications used by thousands of customers. You will shape technical solutions, contribute to architectural decisions, and ensure high standards of performance, reliability, and security in a regulated environment.
This role involves full lifecycle ownership: from understanding product requirements and UX constraints to implementation, testing, deployment, and long-term maintainability.
Depending on your experience and impact, you will contribute to or lead frontend architecture initiatives and help drive engineering standards across the team.
Responsibilities
At Wallester, frontend engineers are system owners. They build and maintain scalable, secure, and reliable web applications that directly impact customer experience. You will take full ownership of the features and modules you work on - from idea to production. This includes understanding business and UX requirements, designing technical solutions, implementing them with high quality, and ensuring they perform reliably in production. Specifically, you will:
Own frontend features end-to-end - from technical design to deployment and continuous improvement
Design and evolve scalable frontend architecture and state management solutions
Implement complex user-facing flows with strong focus on performance, accessibility, and usability
Ensure high standards of code quality, testing, and maintainability
Drive frontend best practices, standards, and tooling improvements
Collaborate closely with Product, Design, and Backend teams to deliver cohesive solutions
Debug and resolve production issues, taking responsibility for frontend reliability
Identify and address technical debt proactively
We expect all engineers - mid and senior - to demonstrate ownership, initiative, and technical leadership within their scope. Senior-level engineers additionally:
Lead frontend architectural decisions and cross-team technical initiatives
Define and evolve frontend technical standards and long-term direction
Mentor other frontend engineers and raise the technical bar
Drive complex, high-impact initiatives with minimal supervision
Requirements
We're looking for engineers who care deeply about user experience, code quality, and long-term maintainability.
You likely have:
3+ years of professional frontend or full-stack experience (5+ years typically for senior level)
Strong experience with JavaScript and TypeScript
Solid production experience building applications with React
Strong understanding of state management and component-based architectures
Experience integrating with REST APIs
Experience working in agile development environments
Good English communication skills
Ability to work independently and drive tasks to completion
Beyond technical skills, we expect you to:
Take ownership of frontend modules and features end-to-end
Be comfortable contributing to architectural decisions
Drive improvements in frontend standards, testing, and tooling
Care about performance, accessibility, and security
Take responsibility for the reliability of frontend systems in production
For Senior-Level Candidates, we additionally expect:
Experience designing scalable frontend architectures
Strong frontend testing strategy knowledge
Experience mentoring engineers
Ability to drive technical decisions under ambiguity
Nice to have
Experience working with Effector or similar state management libraries
Experience working with complex design systems or UI libraries
Experience improving frontend observability and performance monitoring
Experience working in fintech or other regulated industries
Knowledge of frontend security best practices
Experience with internationalization and localization
Experience modernizing or refactoring legacy frontend codebases
Experience contributing to internal frontend standards or shared libraries
A genuine curiosity for technology and attention to detail always stand out.
We offer
Competitive salary
Development and career opportunities
Medical Insurance upon the completion of the probationary period
Supportive and caring Leadership
A modern office in the center of Tallinn
A chance to work as part of a highly motivated and talented team
Referral program
Stebby
Team building and Company Events
Free parking