T Hub – Senior QA / Test Engineer (API & E2E)

T Hub – Senior QA / Test Engineer (API & E2E)
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ENTER SUPERPOSITION

Location: Warszawa, ul. Marynarska 12

Form of employment: CoE

T Hub is a dynamic, forward-thinking initiative where technology truly matters. We are the innovation core of our organization – a place where top talents ideate, prototype, and deliver cutting-edge solutions in international projects across Deutsche Telekom Group.

Have you ever wondered whether you’d rather work in a big-tech company, a software house, or a startup? From home or the office? In telco or IT? With international or local teams?

At T Hub, the answer is one – YES!

What’s next?

Find yourself a super position Apply Talk with us Find yourself in a superposition!

What tasks await you?

The Project: We are launching a strategic technology project to enable seamless global IoT connectivity by simplifying how international partner platforms are integrated and operated. The initiative focuses on building a common integration layer that abstracts the complexity of diverse external APIs and allows connectivity services to be delivered in a consistent, scalable, and automated way.

At the heart of the project is the development of a Connectivity Management Platform Adapter – a modern, extensible solution that connects multiple partner networks with internal systems, and directly supports the delivery of global IoT services for enterprise customers.

• What you will do

• Define and own the end-to-end quality strategy for a greenfield Connectivity Management Platform integration layer.

• Build and maintain a fully automated API and E2E test suite integrated with the GitLab CI/CD pipeline.

• Ensure accuracy and resilience of API “translations” between external MNO platforms and internal systems.

• Design tests that validate behavior against changing external partner APIs and prevent regressions.

• Monitor production logs, identify edge cases, and proactively simulate real-world failure scenarios.

• Collaborate closely with developers and product teams to embed quality into the delivery lifecycle.
  What skills will be appreciated?

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• What do you bring

• 4+ years of professional experience in QA Automation, with a strong focus on API-first products.

• Hands-on expertise in testing REST and SOAP APIs using tools such as Postman, Newman, or custom scripts (Node.js / Go).

• Experience with Playwright or Cypress for end-to-end frontend testing.

• Familiarity with contract testing concepts and tools such as Pact or similar solutions.

• Experience with performance and load testing tools (e.g. K6, JMeter).

• Very good command of English (working language of the project).

• A quality-first mindset combined with the ability to work autonomously in a greenfield environment.
  Our offer for you

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• Benefits

• Stable employment based on an employment contract.

• Medical package and life insurance.

• Access to training platforms – Percipio, Coursera, Rodos.

• Benefit platform – you choose what you want to use.

• Additional day off for your birthday or nameday.

• Free parking space.

• Flexible home/office work model.

• Our offer for you

Working at T Hub at T-Mobile will offer you a unique and highly rewarding experience on the IT market. As a leader in the telecommunications industry, T-Mobile provides an opportunity to define quality standards for platforms that enable global IoT connectivity.

You will work on a strategic, international project from day one, with real ownership over testing strategy, tooling, and automation. We foster a culture of trust, continuous improvement, and technical excellence, supporting your growth through learning opportunities, mentorship, and meaningful impact.

Benefits

• No dress code

  • you can just be yourself here

• Medical,

sport and life insurance

packages at preferential terms

• Access to: Percipio, Coursera, Rodos learning platforms

• Access to our products and

services at preferential terms

• Employment contract-based cooperation

• Know Talent - receive training

or financial bonus for

recommending new

employees

What will your recruitment process be like?

A fair approach to all people who want to join T Hub means that:

• The recruitment process is transparent;
• Our recruitment decision is based solely on an assessment of your skills (your race, skin color, sexual orientation, gender identity, origin, disability, political view, appearance, or religion will not have any influence on yhe outcome of the process);
• Regardless of the outcome of the process, you will get detailed feedback.
  Who are we?

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We're one of the four European technological hubs of the Deutsche Telekom group, to which T-Mobile belongs. Thanks to this, you have the opportunity to work on global projects as well as collaborate with business partners from various industries. Whether it's automotive, security, banking, or countless other options - be sure to explore them all!