Java Engineer

There’s always another way of seeing things

Job details

  • Full-time
  • map markerBarcelona, ES
  • cardRequires Work Permit
    Requires that you're a citizen or have a valid work permit / visa sponsorship to work in the country in which this position is based.
  • routeIntermediate
  • routeRequired language: Spanish

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 Created to change the world, Holaluz leads the way in the transformation of the Spanish Energy Sector with a clear investment in self-consumption and electric mobility. And with a not-negotiable goal: to put the customer at the center of their decisions in order to build a long-term relationship based on trust.

We sell electricity that is from 100% renewable sources and offer savings with personalized products that, thanks to technology, can be tailored to the power needs of each customer. As a platform for energy exchange, we will make it possible for users who are producing more energy than they need to be able to feed it back into our system, allowing other users to “reserve energy”.

We are a team of people which the main goal is to change the world. Ambition and enthusiasm are fundamental when it comes to having the positive attitude that lets us change our surroundings. At Holaluz we don’t only sell energy. Our main challenge is to create a system that allows a new standard of living for people, by supporting the rational use of energy, storage and self-production.

At Holaluz we are looking for a Java Engineer to help us evolve our ERP. The ERP is a very important part of Holaluz as critical processes are managed from there, such as the ATR (light commercialization switching process), billing or all accounting and finance processes. If you are looking for a large project to develop and grow as a professional we are looking for you. 

At the technology level, we develop with Java8 and SQL Server as a database and we have all our infrastructure in AWS. We use several Amazon Web Services products from the ERP like S3, SQS, etc. and we have automated the Windows Server 2012 infrastructure where the ERP runs with tools like Powershell, Ansible, Packer and Terraform. We are not going to lie to you, there is a lot of work to do and a lot of code to fix / improve / optimize, but we want to make a leap in quality with engineers hungry and wanting to do things right.

As a Java Engineer you will:

  • Manage queue systems with SQS
  • Work with AWS, all our infrastructure is in code with version control. We will help you have the infrastructure resources that your team needs at each moment
  • Configuring servers with Ansible - Automation of AWS with Packer and Terraform
  • Aggregation of logs in ELK - Monitoring / alerting using technologies such as Cloudwatch, InfluxDB, Grafana or Telegraf 

Main requirements

  • Experience in Java 8
  • ERP (S3, SQS, etc)
  • Experience in SQL databases (SQL Server ideally)
  • Intermediate Spanish level

Nice to have

  • Modern development methodologies (Testing, Pair Programming, Extreme Programming, BDD)
  • Hexagonal Architecture and DDD
  • Interest in DevOps culture where development and systems work together to improve the stack
  • Interest in learning system automation and AWS
  • Professionalism, teamwork, #rigor and desire to learn and share knowledge 


  • Join a company where people come first, with an unbeatable work environment and great talent where we live our values
  • Flexible schedule, as a result of our mentality for responsibility and autonomy
  • Nursery to help integrate life and work for new parents. "Casal" those weeks of the year in which combining children holidays and work becomes a little more complicated
  • English and Catalan classes in the office
  • Continuous learning with internal training, courses, conference attendance
  • Subscription with very small fee in G4L, which includes yoga and crossfit classes in the office
  • Subscription with very reduced share of medical mutual
  • Organic fruit every day
  • Professional development without limits in an exciting company and a team with constant challenges
  • Work focused on results, using agile methodologies, while enjoying the flexibility and valuing the sense of responsibility and enhancing the culture of feedback
  • The opportunity to contribute to the growth of a company that wants to change the world 

Apply now

Sign up to apply

Or sign up to refer and earn a reward of €300