T‑Systems is part of the Deutsche Telekom Group, with around 30.000 employees worldwide. We create technology with purpose to generate a positive impact on society. We are looking for curious talent, eager to learn, take on challenges, and contribute ideas that transform our customers’ experience.

We trust people: we offer autonomy, continuous support, and a collaborative environment where you can grow without limits. We are one global team, guided by respect, integrity, and a passion for doing better every day.

Job Description The application supports the digital management and documentation of technical infrastructure in telecommunications facilities. The solution enables field and office personnel to capture, visualize and maintain technical asset data directly on Android devices, improving data quality, operational efficiency and planning accuracy.

The application plays an important role in supporting infrastructure modernization, transparency and regulatory compliance initiatives.

Flutter, Dart, Kotlin, Python

Android SDK

Microsoft Intune

GitLab, JIRA, Confluence, Tardis

Activity description and concrete tasks

Collaborate with the Product Owner and cross-functional teams to design, develop, maintain, and continuously improve enterprise-grade Android mobile applications.

Take technical ownership of mobile application components and contribute to the overall mobile architecture. Design and implement new features with a focus on usability, maintainability, performance, and operational excellence.

Key responsibilities include

Develop Android applications using Flutter and native Android technologies where appropriate.

Design and implement scalable mobile architectures.

Ensure quality through automated testing,



code reviews and documentation.

Integrate backend services and enterprise APIs.

Manage CI/CD pipelines and release processes.

Support Intune/MDM deployment and enterprise distribution.

Implement crash reporting and analytics.

Support operational handover and maintenance activities.

Work in an agile environment.

Qualifications Must to have skills

Flutter, Dart, Kotlin, Python

GitLab, JIRA, Confluence

Senior experience in frontend development / Design

Senior experience in Android App Developement incl. Android SDK

Debugging Skills

Test automation/Test-driven development

Advanced English Level

Nice to have skills

German Language.

Experience in iOS App Developement.

Microsoft Intune.

Additional Information Work environment & flexibility

International, dynamic and collaborative environment.

T-Social: social initiatives (sports, community, health, ...).

Hybrid work model (remote/on-site).

Adaptable working hours.

Growth & development

Customized training: access to Coursera to learn whatever you want, whenever you want.

Weekly language classes (English & German).

International Mentoring Sessions & Experience Days.

Compensation & benefits

Flexible compensation plan (health insurance, meal vouchers, childcare, transport).

Telemedicine.

Life and accident insurance.

Social fund.

Wellbeing & time off

26+ working days of vacation per year.

Free access to specialist services (medical, legal, wellness).

100% salary coverage during medical leave.

And many more advantages of being part of T-Systems!

T-Systems Iberia will only process the CVs of candidates who meet the requirements specified for each offer.

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📌 Senior Flutter Developer with English (m/f/d) (Madrid)
🏢 T-Systems Iberia
📍 Madrid