Lisbon, Portugal

Join the fastest growing Android App Store and distribution platform in the world, with over 400 million users and 1 million apps. With offices in Portugal, Singapore and China, this company works with end-users as well as OEMs and telecoms. Our mission is to bring back the freedom of choice to the world of apps. And to shape the future of the app economy by creating unmatched value for developers and users globally. The way you play, the way you get your apps - we're making everything easier, better for you.

We also know that our success is dependent on the success of everyone working with us. That’s why, being a tech company, we do have real human people as the center of it all - of who we are, really. The App Store team’s talent and skills - that’s the algorithm of our success. This is where you come in!


Our Values:

  • Innovation - meaning, we build our own way to the future
  • Ambition - we always go beyond
  • Integrity - we are transparent and trustworthy
  • Results-driven - we are strong on delivering
  • Collaboration - the superpower is ‘We’, not ‘I’


What you are going to do?

We are looking for a Senior Python Developer with at least 5 years of experience who will become a part of the Backend Team. This team explores and develops AppCoins Protocol and integration of blockchain technology in our payment and loyalty systems. 

The main challenges of this role will be to develop tools and APIs to support transactions on and off chain, always aiming top class scalability and resilience.

You will also be responsible for:

  • Contributing to the technical architecture design
  • Guiding and mentoring their team through technical issues and challenges


What we’re looking for?

  • Bachelor's or MSc Degree in Computer Science or compatible
  • 5+ years of experience
  • Proficiency in Python 
  • PostgreSQL and Redis
  • FastAPI or Flask
  • Celery
  • Git
  • Experience with Webservices and Microservices architectures
  • Deep knowledge of security challenges

Nice to have:

  • Blockchain knowledge, in technologies like Ethereum, Solana or Polygon
  • Interest in high scaling systems 


Why join us?

  • Be a key member of a team building innovative, next-level products and solutions reaching hundreds of millions worldwide
  • The impact of helping shape the biggest company in Portugal by number of users
  • A continuous bet in your skills development, with access to online platforms and courses, such as Udemy and related
  • Work in a globally successful, fast-growing industry
  • Life and Health Insurance
  • IT Equipment (laptop + smartphone)
  • Hybrid work policy - work 80% of your time at home and 20% at the office
  • A company culture focused on talent’s growth - we have a career development plan customized for you
  • Multicultural and exciting work environment
  • Creative team building activities and workshops with amazing, fun experts
  • Awesome (all dietary religions covered) free snacks and breakfast at the office


You will always - we promise - be excited to start your day here!

About us

Caixa Mágica Software is a leading Portuguese company in the Open Source market segments in Portugal. We provide various services, from specialized business consultancy, software project development and research and innovation. We have developed several projects with different implementation targets. We are actively involved with the Open Source communities, organizing a popular event in Lisbon and participating in several research projects funded by the European Union. Caixa Mágica maintains strong ties with the Portuguese public administration, participating in the development of middleware for the Portuguese Citizen Card system and extending the concept to standardization and compliance with other European systems. We also maintain a close connection with the Innovation and Research departments in various sectors, such as telecommunications and media, energy, mobile systems and cloud-based platforms to support manufacturing systems.

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