Senior Software Engineer - Java

 

At One, every moment counts.

 

Moments when the team connects us, when growth motivates us, when impact inspires us, when recognition pushes us, and when ambition drives us. These moments define our everyday. Everything we do contributes to making the moments we experience truly meaningful.

As part of the 4iG group, our goal is to become Hungary’s leading telecommunications provider. We build on a strong foundation and enrich lives with innovative solutions.

 

Every moment counts. Make the most of yours. Join us!

 

Your place in the team:

Completes application/service developments in a microservice based, containerized environment by coordinating requirements, schedules and activities, contributing to team meetings, troubleshooting development, test and production issues across multiple environments and operating platforms. Supports testing activities and handover to Operation Department. Activities include 3rd line maintenance, issue and incident tracking aligned with SLA’s. Updates knowledge by researching new technologies and software products.

You will be involved in the following tasks:

  • design and implement Java-based microservices for front-end applications aligned with business and IT architecture needs
  • support and coordinate consumer systems and mentor medior/junior colleagues
  • review pull requests and provide feedback to peers and juniors
  • integrate microservices with backend APIs via API Gateway
  • collaborate with product owners to understand business requirements and participate in all development phases
  • ensure compliance with One policies and procedures
  • prepare technical documentation (HLD, IFA, Swagger) and estimate development efforts
  • work in agile or waterfall methodologies and support functional/non-functional testing
  • investigate and resolve defects during development and lifecycle
  • make independent software architecture decisions and collaborate with DevOps on CI/CD design
  • prepare release packages for testing and production environments

We are looking for you, if you have…

  • IT-related degree or developer qualification
  • intermediate English proficiency (spoken and written)
  • 5+ years of experience in software development, particularly Java (preferably Java 11, Spring Boot)
  • experience with caching tools (Redis), container environments (Docker, OpenShift), and RDBMS programming (SQL, PL/SQL, PostgreSQL)
  • skilled in unit testing and mocking frameworks
  • strong knowledge of REST/JSON and network communication solutions
  • familiarity with SDLC, TDD, CI/CD, and DevOps practices, including tools like Artifactory and Azure
  • proficient in time estimation, identifying and refactoring incorrect architectures, and adapting to unfamiliar codebases
  • business-focused, motivated, and experienced in design and development
  • excellent analytical, communication, and organizational skills
  • quick learner with an innovative and proactive mindset

What we offer:

  • cafeteria package & bonus or comission
  • laptop & mobile phone (with unlimited voice and data tariff package)
  • hybrid way of working
  • corporate Health Insurance (Swiss Clinic)
  • employee discounts (e.g. Employee Flotta)
  • wellbeing program in the topics of sport, nutrition, relax and help (spiritual support)  
  • 4 paid days leave/year for charity projects  
  • other discounts (e.g. AYCM card, eye-glass allowance)  
  • learning opportunities (internal trainings) 

Discover Your Future at One

 

If you’re ready to learn more about who we are and what we do:

• Visit our website for more insights.

• Follow our career page for updates and opportunities.

 

At One, we’re dedicated to creating a workplace where every moment counts. Moments when the team connects us, when growth motivates us, when impact inspires us, when recognition pushes us, and when ambition drives us, these moments define who we are.

 

Every moment counts. Make the most of yours. Join us!