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Front-end Developer | Payments Web Application (Security Product)

Vilnius - Tesonet

Job description

We're building a web app of the Global Payments Gateway (Checkout System) using React. Front-end developers work closely with back-end engineers, payment specialists, designers, business analysts, and product managers. Our team is responsible for the overall quality and direction of the front-end side of the project. We acknowledge that success starts with having the right people in the right place.

As a front-end developer, you'll use React, Redux, Monorepo, Webpack, Babel and other modern front-end tools. Also, you'll use in-house tooling, such as custom UI components library, common utilities that are needed to develop in-app business logic & user flows, add integrations and collect data. If you breathe technologies, join us and expand our front-end forces!

What you will do

  • Solve multi-product, cross-sell, up-sell puzzles, 3rd party integration, and complex features;
  • Integrate layers of multi-dimensional personalization, A/B experimentation, and analytics;
  • Strive for blazing fast application performance.

What we expect

  • A good grasp of React usage patterns and it's ecosystem;
  • Proven experience in developing front-end web applications that perform well;
  • Strong knowledge of JavaScript.
  • Be proficient with modern CSS, it's tooling, and patterns (i.e. SCSS, BEM, utility classes, etc.);
  • Hands-on experience with modern tooling: transpilers (Babel), bundlers (Webpack and/or Rollup), CI configurations;
  • Optimized performance of complex client-side applications;
  • Knowledge of covering apps with automated tests or practiced TDD;
  • Experience of working in a team and with cross-functional specialists;
  • Understanding how to provide highly effective code reviews and peer support;
  • An eye for detail and good UX;
  • That you are passionate about code quality and constant self-improvement.

What we offer

  • Great conditions for work - flexible hours, separate workspaces for teams, no unnecessary distractions;
  • Top-notch technologies and tools to work on world-renowned products;
  • Need to unwind? We have what you need: chill zone, F-1 simulator, table tennis, foosball, basketball, xbox, and more;
  • Professional in-house physiotherapist who will help you take care of your health;
  • Always fully stocked kitchen to fuel your productivity;
  • Professional growth opportunities (training courses of your choice, books, global conferences, business trips, etc.);
  • Awesome team. Seriously - the best! We do regular internal events, knowledge sharing talks, team retreats & workation trips like nobody else;
  • Gross salary starting at 2000 EUR/month.


Tesonet is home to a number of innovative projects that are taking the tech world by storm. We are driven to succeed and see no boundaries in reaching the heights we have envisioned. That said, the success of our projects rests on the shoulders of our great team that's on the way to a digital revolution.
Among the products we have developed, there’s a world-renowned cybersecurity service, data intelligence service and unique business solutions powered by machine learning. No matter if it’s B2C or B2B projects, we always challenge the norm, invest in the latest technology and strive to achieve what others believe impossible.