Expert Full-Stack Developer (M/F/D)

T-Systems

Sevilla

On-site

EUR 65,000 - 85,000

Full time

8 days ago

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Job summary

T-Systems in Sevilla, Spain is seeking a Senior Full Stack Developer to drive end‑to‑end software features. You will work across frontend and backend stacks, shaping architecture, and ensuring robust, secure delivery.

Ideal candidates bring deep Python, Angular and Kotlin/Java experience, strong Postgres skills, and a track record in test automation and debugging within agile teams.

Qualifications

Experience with Python, Angular, Kotlin/Java in full‑stack context.
Strong Postgres design and data modeling skills.
Proficient in GitLab, JIRA, Confluence for development workflows.
Senior-level frontend and backend development experience.
Solid debugging and test automation capabilities.

Responsibilities

Collaborate with product owner and cross-functional team to address engineering challenges.
Contribute to product architecture for new features.
Own and maintain product components; enhance features.

Skills

Python

Angular

Kotlin/Java

Postgres

GitLab

JIRA

Confluence

Frontend development

Frontend design

Backend development

Data analysis

Backend architecture

Database architecture

Test automation

Test-driven development

Debugging

Tools

Flutter

Kubernetes

Observability

Job description

Your Task

The main driver for this service is to reach a consistent state of documentation, where all devices within approximately 8,000 central offices ("Betriebsstelle") will be sufficiently mapped. With this mapping, much improved cost efficiency within energy and space management will be achieved. This will directly benefit the central overview about technical equipment rack-slots including documentation of technology and energy supplies. This is a critical pillar for an overall energy management strategy and therefore contributes to the corporate objectives for carbon dioxide emission reduction. This role is the main enabler for:

Transparent space utilization, energy consumption and energy planning
Managing the technical places
Localization of undocumented legacy systems

Responsibilities

Collaborate with the product owner and the cross-functional team to execute engineering challenges
Contribute to the product architecture to ensure seamless development of new product features
Take the technical ownership for product components and enhance and maintain these
Design and develop new features
Ensure high quality of software artefacts through automated tests, code reviews and documentation
Integrate your software with partner systems, often requiring you to learn new technologies
Ensure that the product is always compliant to security requirements and uses state-of-the-art technologies
Work in an agile and team context

Your Profile

We are seeking a Senior Full Stack Developer with extensive experience in both frontend and backend development, proficiency in modern programming languages and frameworks, and strong skills in database architecture, testing, and debugging.

Must Have Skills