We're looking for a Senior Frontend Engineer to grow our team where there's room for everyone to improve their core skills and also get better at mentoring and leadership. The Senior Frontend Engineer role is part of our frontend team; the team responsible for building, running, and maintaining all the frontend aspects of our services.

What you'll be working on

  • Build and maintain the next generation of our frontend library.
  • Maintain our existing frontend integration written in React/Redux.
  • Participate in architecture discussions and contribute to technical and architectural decision-making
  • Collaborate with Product Management to define and iterate to develop and perfect our products
  • Improve your own and your fellow developers' skills through design kick-offs, pairing sessions, and code reviews

Who you'll be working with

  • A small, smart, and highly capable team that builds and runs their services themselves
  • A world-class QA team that understands our system better than anyone else
  • A product team that makes decisions based on usability tests and usage data

The majority of our team is located in Budapest, Hungary, but you'll be able to work remotely anywhere in the EU. #LI-remote


As a member of a small team, you must be experienced in some areas to be productive from day one. Everything else is fair game and you will have the opportunity to learn on the job.


  • At least 5 years experience in frontend development positions
  • Experience with modern frontend frameworks, especially with React
  • Ability to build things from scratch
  • Fluency with web technologies
  • An eye for a good product and user experience
  • A strong notion of clean code and good coding practices
  • A strong testing culture

Bonus points

  • Experience with modern frontend frameworks (such as Svelte)
  • You have done cross-site JavaScript development
  • You have used cloud services before
  • You mentored fellow colleagues and helped them improve their skills
  • You are active on GitHub and have contributed back to open-source projects

If the role sounds interesting, apply now and get to know us during the interviews. You can read more about our hiring process on Glassdoor.

Tech Stack

At Secret Sauce, we use the technologies and tools that we believe are right for the job at the time. We're not afraid to replace a technology or rewrite a service if gaining experience and understanding the domain better makes us realize that we made the wrong choice. We embrace change and work in a fast-paced environment which means that the technology stack we work with is what we believe is the best. That makes us quite happy.

Our backend system consists of independent services built using Java and Python that communicate asynchronously through Kafka. We use Avro and a Schema Registry to enforce these interfaces. All our services are packaged using Docker and deployed to our infrastructure in AWS using Kubernetes. Our infrastructure is immutable, we build AMIs with Packer and roll them out with Terraform. We don't have "DevOps" or an Ops team, we think of running services in a cloud environment as part of the software engineering role.

The services we provide to our retail partners are integrated into their existing websites; we provide a single JavaScript library that they can use to unlock all of our products. Analytics, AB testing, error reporting, real-user monitoring is built-in and is available to Fit Predictor, Style Finder, and our future services. The services themselves are built using modern JavaScript, React, and Svelte.

Our data team loves Spark and uses it to process large datasets that we receive from our partners and that we produce ourselves. We don't run a persistent cluster; we process and move data between different data stores: S3, Kafka, PostgreSQL, and Snowflake are all part of the equation and are used where they make the most sense. We rely on Databricks to manage our Spark clusters and use Apache Airflow to orchestrate tasks and to monitor, schedule, and retry jobs.

We started out as a small development team using Ruby and Rails. We ended up with our current architecture and tech stack not because we use technology for technology's sake, but because we believe they are the right choice with the right trade-offs for our expertise, needs, and size.