You want your work to have an impact. Real impact. Ever thought about where most CO2 emissions come from? It’s not planes. It’s not Bitcoin, either. It’s buildings. So why not join a company that already measures energy worldwide in over 14 million homes and commercial properties? And help transform that data into actionable insights?
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 as:

App Developer – Energy Saving Solutions (*)

Your responsibilities

As a Frontend Developer for our Energy Saving Solutions, you are responsible for the frontend part of our Angular-based mobile app, together with your squad you will be working on continuous improvement and new features of the ista tenant app. Your tasks will mainly be the following:
Collaborate with cross-functional teams to gather requirements and develop a mobile application using Angular and the Ionic Framework
Deploy applications to the iOS App Store and Google Play Store while adhering to respective guidelines and requirements
Ensure application performance, quality and responsiveness
Troubleshoot and debug the application to optimize performance and fix bugs
Continuoual discover, evaluate, and implement new technologies to maximize development efficiency
Stay up-to-date with the latest industry trends, techniques, and best practices in mobile application development
Collaborate with the UX/UI team to create intuitive user interfaces and seamless user experiences

Your background

Bachelor’s degree in Computer Science, Software Engineering or a related field
Proven experience in mobile application development using Angular and the Ionic Framework
Strong knowledge of HTML, CSS, JavaScript and TypeScript
Familiarity with iOS and Android development platforms and their respective guidelines
Experience with version control systems such as Git
Solid understanding of RESTful APIs and backend service integration
Excellent problem-solving skills and attention to detail
Strong communication and collaboration skills to work effectively in a team environment
Ability to quickly adapt and learn new technologies
Fluency in English; German language skills are a plus

Our offer

Enjoy many benefits: Look forward to an attractive salary including vacation pay, 30 days of vacation per year, flexible working hours in a modern office building and the opportunity to work remotely
Stay curious and develop yourself: Standing still is not an option for us, which is why we support you in every aspect of your journey – plenty of learning opportunities await you
Secure your career: With us, a solid international medium-sized company meets a start-up atmosphere – our future course offers you long-term and excellent career options.
Do the right thing with a sense of purpose and future: Our services save CO₂ and protect the environment – we are working towards a sustainable world of tomorrow

Our team

Diversity, flexibility, fun at work and a great team spirit make our team special
We work in a dynamic environment according to agile methods
You can expect an open culture with lots of room for new ideas and impulses
We hold great importance to direct communication and fair cooperation

We look forward to receiving your application online. Should you have any questions, please do not hesitate to get in touch.
ista SE
Hilda Murday
Luxemburger Straße 1
45131 Essen
Mobil +49 201 459 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.

Apply online