Kantox

Senior Front End Software Engineer

  • Barcelona
  • 40 hours
  • senior
  • Kantox
  • Spain
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Description

You will be part of our top-notch team of Barcelona beach-based developers (ocean views from your workspace ??). You’ll help build the user interface of our award-winning FX platform working shoulder to shoulder with the UX, Product, and Tech teams.


We are seeking a developer who is comfortable working with frameworks like Angular, React, Vue, or similar and is excited to explore the world of Ember. No prior Ember experience is necessary—we'll provide you with all the resources and support you need to master it, eventually enabling you to teach us a thing or two!


This role extends far beyond just working with Ember. We are actively developing a platform-agnostic component library using Stencil.js and web components. This library is designed to provide reusable components that seamlessly integrate across an expanding UI ecosystem, which includes frameworks like Ruby on Rails (RoR), Phoenix, and others we plan to adopt. Our backend is primarily built using Ruby on Rails, with additional services developed in Elixir (Phoenix) to handle specific functionalities.


At Kantox, we value a self-driven mindset and a strong desire to learn and grow. Asking questions and embracing mistakes as learning opportunities are essential traits for thriving in our culture. With a flat management structure, we place great trust in the expertise and contributions of every team member. You’ll collaborate with a highly motivated, diverse, and multidisciplinary team that sees software development as the ultimate team sport.


Your mission within Kantox

As a Senior UX/Front-End Developer, your primary responsibility will be to ensure seamless and intuitive user interactions within our platform. You will collaborate closely with the UX team during daily Stand-Up Meetings (SUMs) to maintain alignment on our shared vision. In this role, you will serve as a key support to the team lead, offering leadership and mentorship to junior and mid-level engineers. Active participation in collaboration with product, QA, and other technical teams will be required for reviewing requirements, drafting specifications, and coordinating development and releases. We are seeking a candidate who demonstrates the potential to eventually assume the role of Tech Lead.


While English is the official working language, our multicultural and diverse environment frequently features Spanish, Catalan, French, Russian, Italian, Bulgarian, and various other languages in common areas. Prior financial background is not a prerequisite; comprehensive training will be provided to facilitate understanding of our platform and its underlying processes.


Maintain and improve the code base, make sure that all the applications are running correctly

Develop and test new features, solve issues as they appear, perform due maintenance and upgrades

Review peer's code and help them improve. Review requirements and make sure they are valid and efficient.

Raise improvement suggestions, participate in technical discussions, prepare and maintain technical documentation.

Catering to the clients’ understanding of an intuitive FX platform

Writing efficient and highly readable code

Working closely with the UX team and providing own suggestions

Being responsible for the BE-FE integration and owning frontend projects

As a senior engineer you will act as a mentor to junior and mid level engineers.

You will be the de facto right arm to the tech lead.


Who you are

At least 5 years of professional experience with modern frontend frameworks such as Ember, Angular, React, or Vue.

Great testing skills: Proven experience in creating and maintaining tests to ensure code quality.

Experience working with web components (Stencil JS) is a strong plus.

Self-motivated and eager to learn and improve continuously.

Open to making mistakes but committed to doing things the right way.

Strong team player who values collaboration and isn’t afraid to ask questions.

Permission to work within the EU is a plus

Interested in leading and mentoring more junior engineers

Fluency in English




JavaScript Ember Angular React Vue StencilJS