Job Description

Company Description

As Hungary’s most attractive employer in 2025 (according to Randstad’s representative survey), Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group. The company provides a wide portfolio of IT and telecommunications services with more than 5300 employees. We have hundreds of large customers, corporations in Germany and in other European countries.

DT-ITS recieved the Best in Educational Cooperation award from HIPA in 2019, acknowledged as the the Most Ethical Multinational Company in 2019. The company continuously develops its four sites in Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team.

Job Description

The Project: Internal Support Tools Evolution

You are joining an initiative focused on the evolution, modernization of the Internal Application Landscape. This project involves the strategic transition of well-known cloud services and legacy .NET architectures into a next-generation, AI-augmented, and cloud-native software landscape.

Our goal is not simply to "maintain" the existing system, but to proactively transform it—ensuring sovereignty, high-performance scalability, and seamless handover readiness through disciplined engineering.

Our Engineering Philosophy

We operate at the intersection of Legacy Stability and Modern Innovation. Our approach is defined by:

• AI-Augmented Engineering: We utilize advanced AI development environments (such as Cursor, Windsurf, and Claude Code) and cutting-edge model families to accelerate code comprehension, refactoring, and documentation.
• Disciplined SDLC Patterns: We move beyond traditional development by implementing repeatable, evidence-based SDLC patterns. Every change is backed by structured engineering evidence and rigorous automated testing.
• The "Strangler Fig" Modernization: We prioritize risk-mitigated evolution, using sophisticated patterns to wrap, refactor, and eventually replace legacy components.
• High-Seniority Autonomy: We operate as a lean, highly autonomous unit. We value "technical detectives" who can navigate ambiguity and perform deep reverse engineering.

Mission

To build the automated safety net that makes our modernization efforts possible. You will ensure that as we evolve the Internal Application Landscape, we maintain absolute functional parity and prevent any regressions in our mission-critical business logic.

Role Focus

This role focuses on building scalable automation frameworks and implementing AI-driven testing strategies. You will verify that modernized components produce identical business outcomes to the legacy systems they replace, using both traditional and AI-augmented testing techniques.

Key Responsibilities

• Automated Regression & Parity Testing: Design and maintain comprehensive automated regression suites to protect legacy functionality and verify functional parity during migration.
• AI-Augmented Testing: Leverage AI-powered tools for automated test generation, self-healing test scripts, and intelligent visual regression testing.
• Framework Development: Build and optimize scalable automation frameworks (UI, API, and Integration levels) specifically tailored for .NET and modern cloud-native environments.
• Continuous Testing (CI/CD): Integrate automated test suites into DevOps pipelines (GitLab/GitHub/Jenkins) to provide immediate, high-confidence feedback.
• API & Integration Testing: Validate complex data flows and integrations between legacy monoliths and new, modern services.
• Collaboration: Work side-by-side with Developers and Architects to identify "testable" areas in legacy code and advocate for improved testability.

Qualifications

• Experience: 5+ years in automated software testing, with a strong background in software engineering/SDET.
• Automation Mastery: Proficiency with Playwright, Selenium, or Cypress, and API testing frameworks (RestSharp, etc.).
• AI/Modern Testing: Hands-on familiarity with AI coding/testing assistants and the ability to implement automated regression strategies in complex environments.
• Programming Proficiency: Strong coding skills in C# to build and maintain sophisticated test automation code.
• Analytical Rigor: A detective mindset with the ability to translate undocumented legacy behaviors into precise, automated test scenarios.

Additional Information

• Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation.