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Back End Developer in Barcelona

Friend Theory

Est. Salary
35,000 - €50,000
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Job Description

Welcome to the world of Friend Theory!

Founded in Melbourne and based in Barcelona, Friend Theory is a social network that enables you to find a friend who can help you anywhere in the world. We do this by connecting you to your network of friends, friends of friends, and likeminded community members so you can ask and help your network with anything you need.

Need some tips from a friend on your next visit to London? - check.

Moving to a new city and want to connect to your friends' friends? - check.

Looking to find advice about your new favourite hobby? check, check.

We are a young group of friends, travelers, entrepreneurs, creatives & software engineers that are all super ambitious and passionate about what we are building. We really believe that toghether we have the power to inspire people to help each other more.

I'm interested... What Will my role be?

You will be joining a tight and efficient 4 people team where your role will be leading the backend development of Friend Theory where you’ll be able to do what you do best: build software, and build fast. Ideally, you will be based in Barcelona but will have the flexibility to set your own hours and work remotely if you need.

We have ocasinal company retreats form time to time, one time we found a villa in Bali through our own app!

Let's get technical, what will my main responsibilities will be?

– Create the data models required to support the Friend Theory products

– Develop the Friend Theory REST API according to new features needs

– Maintain and improve existing API code base where required

– Ensure software engineering best practices are followed

– Create a test plan for the API, and implement it

– Externalise some code currently in the API code base to run


– Assist with Web/Mobile front-end development if required

Skills we are excited about:

– JAVA development

– Algorithmic

– Spring Boot

– Hibernate

– Relational databases


– Graph databases, graph theory

– Neo4J

– Kubernetes

Nice to have:

– Experience working with Agile methodology


– Data science

– Cloud computing

– Machine learning

– Knowledge of Dart, Flutter, Mobile apps development

– Knowledge of web technologies, NodeJS, Javascript, VueJS

– Experience working with mobile video/audio streaming

If you are looking for an adventure, have a craving for startups, entrepreneurship and working in an international context apply now by sending us an email at with your CV and tell us why we won’t be able to say no to having you on the team!

We look forward to welcoming you to the family :)

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