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Senior Backend Developer

On-site, Hybrid
  • Brussels, Brussels Hoofdstedelijk Gewest, Belgium
Backend Development

Job description

Looking for a meaningful experience in a fast-growing tech company with a human-centric approach? 

Join our amazing team as a Senior Back End Developer to help us grow the world’s most popular apps and games!

Check our ✨Tech Stack page✨ for more information on our Tech environment and team!

Location: Brussels

About the Role

To help us bring AppTweak to the next level, you will work closely in a multi-skilled team responsible for part of the AppTweak tool and infrastructure.

As a Senior Back-end 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, taking the lead in the design and development of our features. 

Your focus will be to:

  • Architecture and build scrapers and ETL pipelines that ingest the data that power AppTweak

  • Architecture and build API's that make those data available

  • Monitor and optimize our message queue systems

  • Monitor and optimize our infrastructure

Technologies we use

  • Our scrapers and crawlers get their tasks from SQS queues and store data in a mix of MySQL, Redshift, MongoDB, PgSQL, and Elasticsearch databases. They are built using the Ruby programming language (without Rails).

  • Our JSON REST API's are built in Ruby as well using the Grape framework. This (and the scrapers) is where we anticipate you'll be working most of the time.

  • We deploy code using Concourse as a CI/CD pipeline to build Docker images deployed on a Kubernetes cluster hosted on AWS.

  • We also have several Python services, mainly to run ML models developed by our data scientists.

  • 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.

Job requirements

What we expect from you:

  • Bachelor or master's degree in computer science or engineering

  • 5+ years of experience writing backend code

  • Creating database schemas, both SQL and no-SQL, (design data models, not only writing SQL queries) that represent and support business processes

  • Data migration, transformation, and scripting

  • Knowledge of AWS / Kubernetes / Docker

Bonus points

  • GitHub profile or link to open source work

  • 2+ years of experience coding in Ruby

  • Full-stack experience

  • You love food!

What's in it for you?

1. We care about you

  • Flexibility in your work and opportunities for continuous learning and creative thinking.

  • Hybrid remote/work policy: 3x at the Office (Tuesday/Thursday are mandatory days), 2x from home.. Possibility to take 2 weeks of remote work abroad when you first join AppTweak.

  • 20 paid holidays per year + 12 days RTT on top of the fundamentals (meal vouchers, annual “éco-chèques”, hospitalization & group insurance, end-of-the-year bonus, etc.). Attractive salary package with a lot of extra-legal benefits.

  • 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!

2. An inspiring environment

  • 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 with all 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.

Our recruitment process

  • A first video call with Steffany from the HR team to get to know each other and tell you more about AppTweak.

  • A video interview with the Back End Team to deep dive into your past experience and learn more about your aspirations.

  • The Assessment part, to test your skills related to the position.

  • Final call with a C-level or the CEO.

About AppTweak

AppTweak is the trusted app store acquisition partner for mobile leaders worldwide; we provide innovative solutions that help apps and games optimize their app store presence and increase downloads. For 10+ years, companies including Uber, Adobe, and Zynga have trusted our unique metrics, actionable insights, and expertise to make informed decisions and achieve long-term success in the competitive mobile market.

Driven by data science and a human-centered approach, AppTweak is recognized for its innovative features and rapid growth. We have been awarded “ASO Tool of the Year” and “App Data Platform of the Year” by the App Growth Awards, and have been four times recognized as one of the fastest-growing technology companies by Deloitte Belgium.

Today we are a team of +100 people based in 8 offices around the globe (Brussels, San Francisco, Bengaluru, Tokyo, Seoul, London, Montreal and Beijing) supporting more than +2,000 customers worldwide. We’re gearing up for fast growth and are looking for ambitious individuals to join our team!


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