Working at ista is all about rethinking the use of energy and resources. For today. For tomorrow and the day after tomorrow. We provide smart solutions for a sustainable future, make complex data more transparent and have the courage to flip the switch to change. In our company with its family-like corporate culture and strong values, our 5700 colleagues in 22 countries make switching to smart devices and digital services in the real estate sector easy. As one of the market leaders, we offer the benefits and reliability of a large corporation combined with the open-minded atmosphere of a modern tech company.


At ista, your ideas can make a real difference. Apply now and join us at our international head office in Essen as:

At ista, your ideas can make a real difference. Apply now and join us at our international head office in Essen as:

(Senior) Software Developer - Java (*)

Your responsibilities

  • Software development in an agile team in the IT department of ista International
  • Further development and modernization of an application created in Java for heating cost statements - the centrepiece of ista to secure our core business
  • Execution of intensive developer tests and support for test automation
  • Support and development of interfaces with other systems such as SAP or master data systems
  • Advising our specialist departments on technological issues
  • Co-design of the software architecture
  • 3rd level support

Your background

  • Successfully completed university degree (e.g. computer science, business informatics) or similar qualification
  • Practical experience in agile ways of working (e.g. Scrum or Kanban) also across teams and scales
  • Very good knowledge of Spring Boot, JPA, SQL as well as good knowledge of Docker, XML/XSLT, REST/SOAP, Angular 2, typescript
  • A basic understanding of Jenkins, Maven, GIT(CI) and Linux is an advantage
  • Knowledge of test automation
  • Experience with continuous integration/continuous delivery
  • Experience in agile software architecture and refactoring projects
  • Ability to work in a team, strong communication skills as well as a goal-oriented work style
  • A high degree of willingness to learn, sense of responsibility and openness to new topics
  • Good written and spoken German and English skills

Our offer

  • Flexible working hours in a modern office building with height-adjustable desks and the possibility to work remotely
  • Compensation in line with the market, 30 days of holiday per year and a sustainable, long-term employment relationship
  • You are joining a successful company in a future-oriented industry – our services help to reduce the consumption of precious resources and protect the environment
  • A wide range of learning opportunities and time to try things out
  • Responsibility from the first day – we create results and invite you to be a part of it
  • Agility and the ability to make quick decisions as well as an open communication display our corporate culture
  • Employee events such as barbecue on our roof-top terrace, international soccer cups or even just free ice cream in the summer

Our team

  • Offers diverse approaches and ways of thinking for best results
  • Is passionate about what it does
  • Consists of highly skilled and well-educated experts
  • Relies on teamwork and a cooperative environment – knowledge transfer and lively exchange within the team is important to us

As we are an international TecCrew, you will find our job advertisements in English. However, we leave it up to you to choose whether you want to submit your application in English or German. So don’t worry about the language, it’s your application that counts.

We look forward to receiving your application online. Should you have any questions, please do not hesitate to get in touch.

ista International GmbH
Hilda Murday
Luxemburger Straße 1
45131 Essen
Tel. +49 (0)201 459-5913

*This job ad is addressed to potential new colleagues whether they are female, male or diverse. At ista we are proud of our diverse workforce and we are committed in enhancing it further. We welcome all applicants, regardless of gender, age, disability, nationality, religion or sexual orientation.

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