Senior Back End Developer


Senior Back End Developer

  • Plný úvazek 
  • Brussels, 1050
  • Vzdělání: 3 rok VŠ
  • zkušenosti: > 5 let




  • Digital
  • Od 50 do 250 zaměstnanců


Senior Back End Developer

  • Plný úvazek 
  • Brussels, 1050

  • Vzdělání: 3 rok VŠ
  • zkušenosti: > 5 let

Who are they?

We’re waiting for you!
Looking for a meaningful experience in a fast-growing tech company with a human-centric approach? Join our amazing team to help grow the world’s most popular apps and games.

Who we are?
Launched in 2014, AppTweak is a team made of 70+ passionate people who serve customers from all corners of the world, with offices in Brussels, San Francisco, Tokyo and Bengaluru. Leading ASO (App Store Optimization) 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.

Want to know more about AppTweak?Company culture, jobs... Let's go for an immersion!
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Job description

We are looking for an amazing Senior Back End Developer to join our joyful team to skyrocket our projects in 2022-2023 and beyond!

About the Role

To help us bring AppTweak to the next level, you will work closely in a small 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.

Once the technical design is complete, we expect you to take part in the implementation with the rest of your team. 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 SAAS product is a Ruby on Rails application serving a React Single Page Application.
  • 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 Sinatra lightweight 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.
  • Preferred experience

    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 (design data models, not only writing SQL queries) that represent and support business processes
    • Data migration, transformation, and scripting doesn't scare you
    • Experience with AWS / Kubernetes / Docker is a plus

    Bonus points

    • GitHub profile or link to open source work
    • Full-stack experience
    • You love food! 

    What's in it for you?

    1. We care about you

    • An exciting and fast-growing company with a people-first culture. “Diversity” and “work-life balance” are not just buzzwords at AppTweak.
    • Flexibility in your work and opportunities for continuous learning and creative thinking.
    • Supportive and collaborative environment focused on personal growth.
    • Hybrid remote/work policy: 3 days at the Office (Tuesday/Thursday being mandatory days), 2 days of remote work. 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.
    • Bi-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.

      Don't forget to check our ✨Tech Stack page✨.

    Package: monthly gross salary paid 13,92 times per year (13th month & holiday paid) + copyrights (15% tax) + 6% and 17% of the value of the salary in benefits. Competitive salary based on the profile and experiences.

    Our recruitment process

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


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