Job Description At T-Systems, a leading multinational in digital transformation, we are looking for a Java Backend developer to join our development team, with the possibility of working from our offices in Reus, Granada, Valencia, Seville, Gijón or A Coruña. You will be part of the TAO department, a solid, stable and highly specialized team responsible for an ecosystem of critical applications oriented to public administration, with a real impact on society.

Why join this project?

You will participate in long-term projects, with stability and continuous technological evolution.

You'll work in an environment with more than 40 years of experience in digitizing the public sector.

You'll be part of a team where code quality, architecture and good practices are key.

Innovation with AI applied to development At T-Systems, we are firmly committed to Artificial Intelligence as an accelerator of software development, integrating it both into our internal processes and into the products we build.

How we use AI internally Use of corporate tools with their own generative AI licenses to:

Assisted code generation

Intelligent refactoring

Automatic documentation

Improving developer productivity by:

Test automation and test case generation

Debugging and troubleshooting support

AI in our products Development of intelligent functionality in client applications, such as:

Intelligent document classification and processing

Predictive and recommendation systems

Integrating AI as a cross layer to improve:

The user experience

Data-based decision-making

What will you do in your day to day life?

Development and maintenance of backend applications in Java

Design and implementation of new features

Working with Git repositories and GitFlow flows

Participation in agile methodologies (planning, retrospectives)

Incident resolution and continuous improvement

Collaboration with frontend profiles, architecture, QA and DevOps

Requirements What are we looking for?

Backend development experience with Java

Experience or familiarity with Artificial Intelligence tools applied to software development





Knowledge of Git and GitFlow

Analytical capacity and orientation to problem solving

Proactivity, autonomy and organization

Ability to work in a team

Valuable experience in public administration environments

Additional Information What do we offer you?

Stable projects with real impact

Use of Artificial Intelligence applied to development

Collaborative environment with strong technological culture

Opportunities for growth and continuous learning

Environment and flexibility

International, dynamic and collaborative environment

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

Hybrid work model (teleworking/in-person)

Flexible schedule

4 weeks of teleworking per year

Professional Development

Tailor‑made training: access to Coursera so you can learn what you want, when you want

Weekly language classes (English, Spanish and German)

Integral Mentoring Sessions and Experience Days

Compensation and benefits

Flexible compensation plan (health insurance, restaurant tickets, day care, transportation)

Telemedicine

Life and accident insurance

Social fund

Wellness and free time

More than 26 working days of vacation per year

Free access to specialists (health, wellness and legal advice)

100% of the salary in case of sick leave

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

T-Systems, a leading multinational in digital transformation, is seeking a Java Backend Developer to join their development team. This position offers the possibility of working from offices in Reus, Granada, Valencia, Seville, Gijón or A Coruña. You will be part of the TAO department, a solid, stable and highly specialized team responsible for an ecosystem of critical applications oriented to public administration,



with a real impact on society. You will participate in long‑term projects with stability and continuous technological evolution. You will work in an environment with more than 40 years of experience in digitizing the public sector. You will be part of a team where code quality, architecture and good practices are key. At T-Systems, Artificial Intelligence is integrated as an accelerator of software development, both into internal processes and into the products being built. The team uses corporate tools with their own generative AI licenses for assisted code generation, intelligent refactoring, automatic documentation, test automation and test case generation, and debugging and troubleshooting support. You will also be involved in developing intelligent functionality in client applications, such as intelligent document classification and processing, predictive and recommendation systems, and integrating AI as a cross layer to improve the user experience and data‑based decision‑making.

Responsibilities

Development and maintenance of backend applications in Java

Design and implementation of new features

Working with Git repositories and GitFlow flows

Participation in agile methodologies (planning, retrospectives)

Incident resolution and continuous improvement

Collaboration with frontend profiles, architecture, QA and DevOps

Your Profile We are looking for a Java Backend Developer with strong backend development experience, knowledge of AI tools for software development, version control expertise, and excellent problem‑solving abilities to join a specialized team working on critical public administration applications.

Must Have Skills

Backend development experience with Java

Experience or familiarity with Artificial Intelligence tools applied to software development

Knowledge of Git and GitFlow

Analytical capacity and orientation to problem solving

Proactivity

Autonomy

Organization skills

Ability to work in a team

Nice to Have Skills

Experience in public administration environments

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📌 Java Backend Developer (M/F/D) (Reus)
🏢 T-Systems
📍 Reus