Full Stack Developer

  • Backend Development
  • Brussels, Belgium

Full Stack Developer

Job description

We're looking for a full stack developer to join our team in Brussels. If you are looking for a key role in a fast-moving start-up, this is for you!

About Us

AppTweak is the leading ASO tool driven by data science. AppTweak empowers +1,500 mobile leaders - such as Amazon, Jam City, Yelp and Adobe - to grow their apps and games with actionable insights in a simple interface. AppTweak’s all-in-one platform offers ASO Intelligence, Ad Intelligence, App Intelligence and Market Intelligence. 

About the Role

To help us bring AppTweak to the next level, you will work in a multi-skilled team responsible for part of the AppTweak tool and infrastructure.
As a full-stack developer, we expect you to have a strong understanding of the current tech environment and help us make the right decisions by understanding business requirements and translating these into strong scalable systems.
We expect you to take part in the implementation and collaborate with other members of your team to bring new features to life from the idealization to the final tests, deployment and maintenance. You will integrate one of our squads and your focus will be to:

- Design and implement client-side and server-side architecture for our new features

- Participate in code review and interact with your colleagues to ensure the best quality for the team's projects

- Troubleshoot, debug and improve previously deployed features

Technologies we use

Our SAAS product is a Ruby on Rails application serving a React Single Page Application. This is where we anticipate you'll be working most of the time.

We also leverage Ruby (without Rails) in our scrapers and crawlers to fetch all the data used to power our tool. Those get their tasks from SQS queues and store data in a mix of MySQL, Redshift, MongoDB, PgSQL, and Elasticsearch databases.  You'll have a chance to see all of that into action.

We expose these data in JSON REST API's are built in Ruby as well using the Sinatra lightweight framework. We deploy code using Concourse as a CI/CD pipeline to build Docker images deployed on a Kubernetes cluster hosted on AWS.

We monitor everything using Prometheus and Grafana to visualize time series and metrics in an efficient manner.

We follow an agile development process inspired by SCRUM, but adapted to our needs.


  • Bachelor or master degree in computer science or engineering, or equivalent experience
  • Experience with a scripting language such as Ruby, Python, Node, ...
  • Experience working with SQL databases
  • Experience with AWS / Kubernetes / Docker is a plus
  • Professional proficiency in English

Bonus points

  • GitHub profile or link to open source work
  • Experience with Rails or equivalent web framework such as Symfony, Django or ExpressJS
  • Love food ! (optional)

What’s in it for you?

  • Opportunity to be a part of a Belgian high-growth company where co-creation is not just a buzzword
  • Learn and grow at an open and fast-paced environment
  • Work-life balance
  • Employee and health care benefits
  • Hybrid office / work from home environment

So if you are motivated, ready to learn, and have a curious and innovative mindset, we’d love to meet you!

Please note you will need a valid visa/work permit to be eligible for the role in the country you are applying for.