Junior Front-End Developer

We are looking for a passionate Junior Front-end Developer to join our second-stage rocket ship 🚀 Working hand-in-hand with back-end web developers to build all client-side logic, you will also be bridging the gap between the visual elements and the server-side infrastructure. You'll report to our Head of Front-End and work with a team of Developers.

Your Responsibilities:

Develop new user-facing features Build reusable code and libraries for future use Ensure the technical feasibility of UI/UX designs Find elegant solutions to usability problems Optimize applications for maximum speed and scalability Stay up-to-date on new Web technologies that will make AppTweak better, faster, and stronger. Participate in code review, pairing, and other forms of knowledge sharing

[Please note you will need a Belgian (European) valid visa/work permit to be eligible for the role]

Our Tech team Technologies we use We're mainly relying on three different languages: Ruby in the backend (for APIs and crawlers). Typescript in the frontend (for our React SPA). Python (mainly used by our Data Science team).

Everything is hosted on AWS and running on K8s, and we have created a robust CI system to develop and deploy our code quickly. We deploy directly from Slack!

We are organized by squads

One year and a half ago, we changed our internal organization by moving from a structure split by stack to something more features-oriented. We created cross-skill squads that are focused on specific parts of the tool to develop and maintain them more efficiently and quickly. Each of them is responsible for its roadmap, and everyone in the squad can participate in product discussions. We value ownership and an entrepreneurial mindset




Computer Science Engineering, Electrical Engineering, Mathematical Engineering, Mechanical Engineering








We care about you! Flexibility in your work and opportunities for continuous learning and creative thinking. Supportive and collaborative environment focused on personal growth. Hybrid “office/work from home” policy (We go to the office 3x per week and 2x we work from home). 20 paid holidays per year + 12 days RTT on top of the fundamentals (meal vouchers, annual “éco-cheques”, hospitalization & group insurance, end-of-the-year bonus, etc.) Fresh fruits, nuts, and snacks self-serve in the office. 1 volunteering day every quarter dedicated to helping a Brussels-based organization. Chance to discover new food recipes, because yes, we love food!

An inspiring environment Chance to connect with a variety of high-profile apps and games across different verticals. A unique company culture based on 4 values: Learn, Play, Perform, Friendly. A diverse team within a flat hierarchy. Altogether we speak more than 15 languages. Yearly company-wide team building in Europe to meet your colleagues from all over the world. A combination of personal and company growth to accelerate your career and help you reach your goals. Regular general team meetings and demo days to make sure everyone is aligned with AppTweak's growth path, mission and vision.

Wanted Profile


Recently graduated with a bachelor's or master's degree in computer science or engineering. You are fluent in English. An understanding of asynchronous request handling and API's. Eager to learn about modern Web technologies. Strong entrepreneurial mindset: you're hands-on and autonomous. You find creative solutions to problems in a fast-moving environment. Team player: you enjoy working with others. You have a proactive attitude and you like to make things move forward. Sensitivity to design in general and user experience.

Nice-to-have Some experience in Web development using modern frameworks (React, Angular, Vue). GitHub profile or link to open source work Full-stack experience You love food!