HubMub
-
United Digital Group

Junior / Advanced Backend Developer (Java) (all genders)

United Digital Group
Spain · Full-time · Entry
Do you want to build scalable backend systems and develop powerful APIs for modern digital platforms? Then you’re the perfect fit for our team – working with German corporate clients and global B2B market leaders!

What We Offer.

  • The chance to become part of a large, international agency group: approx. 350 great employees in Germany, a modern, customer-centric business model and a true New Work environment. As part of MSQ with a further 1500 colleagues, we offer an international perspective with offices and sister agencies in the UK, USA and Asia
  • Flexible working environment: Hybrid or in one of our beautiful offices in Mainz, Ludwigsburg or Barcelona
  • Agile organization: Self-organized teams, extensive onboarding, personal buddy and lots of support from experienced colleagues
  • Work & life balance: job bike leasing, Smart'n'fit weeks, fitness and self-care offers via EGYM Wellpass
  • And of course: modern hardware, well-equipped tool landscape, company pension scheme, further training budget, in-house training, company events, drinks flat rate and good coffee

What you do.

  • Development and maintenance of backend services using Java and Spring Boot
  • Implementation and further development of REST and GraphQL APIs for modern web applications
  • Support in building microservice-based architectures
  • Integration of databases and external systems
  • Close collaboration with frontend developers, UX/UI designers and project management in agile environments (Scrum/Kanban)
  • Writing clean, maintainable and well-documented code
  • Supporting testing, debugging and optimization of backend services

What you bring along.

  • 1–3 years of professional experience in backend development with Java (or strong project experience)
  • Basic knowledge of Spring Boot and API development (REST or GraphQL)
  • Interest in microservices and modern backend architectures
  • Understanding of clean code principles and software development best practices
  • Familiarity with Git and modern development workflows
  • Motivation to learn, grow and take ownership in a collaborative team
  • Good written and spoken German or English skills

Key Skills

Ranked by relevance

java microservices spring boot graphql git
Login to Apply
🇪🇸

Country Guide

Spain

Strong city options with excellent lifestyle

Posted
Mar 06, 2026
Type
Full-time
Level
Entry
Location
Barcelona
Company
United Digital Group

Industries

Technology Information Internet

Categories

Engineering Information Technology

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
United Digital Group
Related

Junior / Advanced Backend Developer (Java) (all genders)

2026-04-16

Full-time
Mid-Senior
Spain
Advertising Services
Information Technology
View Job Details
Youwe
Related

Senior Symfony/Laravel Developer

2026-06-12

Full-time
Not Applicable
Netherlands
Technology
Engineering
View Job Details
Youwe
Related

Senior Symfony/Laravel Developer

2026-06-12

Full-time
Not Applicable
Netherlands
Technology
Engineering