Java/Golang Developer for Cacoo

Location: Amsterdam, NL

Type: Full Time

Salary: Negotiable

* Must have at least 3 years professional experience.

Job Description

We are looking for a Back-End Java Developer (Java/Golang) responsible for managing the interchange of data between the server and the users. Your primary focus will be development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your coworkers into the application. A solid understanding of front-end technologies is therefore useful as well.


  • Integration of user-facing elements developed by a front-end developers with server side logic
  • Optimization of the application for maximum speed and scalability
  • Design and Implementation of security and data protection
  • Design and implementation of data storage solutions and multi threaded Web Application (Java) 
  • Develops applications using dependency injection and configuration driven behaviors
  • Conduct Unit tests, code review, refactoring current source code, assessment and improvement of performance.
  • Settings and improvement on CI (ex.Jenkins)

Skills and Qualifications

  • Strong knowledge of developing back-end services using Golang and/or Java
  • Strong knowledge on API connection security such as Token-based and Oauth2 authentication.
  • Integration of multiple data sources and databases into one system
  • Understanding accessibility and security compliance
  • Management of hosting environment, including database administration and scaling an application to support load changes
  • Data migration, transformation, scripting, setup and administration of backups
  • Creating database schemas that represent and support business processes
  • Implementing automated testing platforms and unit tests (JUnit, Jenkins)
  • Proficient understanding of code versioning tools, such as Git
  • Understanding of “session management” in a distributed server environment
  • JDBC, SQL, PostgreSQL, Redis
  • Excellent understanding of OOP, Design Patterns.
  • Build tool: Maven, Gradle, Dep for Go
  • Microservice architecture: Graphql and Grpc
  • Web Services development experience, knowledge of Linux/UNIX, SQL.
  • Good understanding of front-end technologies and platforms, such as JavaScript, HTML5, and CSS3 (BEM)
  • Experience working in an agile development environment


  • Autonomous and hands-on role that will truly make an impact; join Nulab at an exciting time of growth.
  • A great workplace in one of Amsterdam’s coolest co-working spaces
  • A permanent contract
  • Be one of the first members of a new team, get a say in everything!
  • Travel expenses
  • Office snacks, happy hours, and more…!