Senior Python Platform Engineer (f/m/d) @ A1 Competence Delivery Center

Strength. Care. Growth

A1 Competence Delivery Center is a vital component of A1’s telecommunications business. Acting as an expertise hub, CDC is dedicated to delivering a full range of high-quality IT, network, financial and other services to support A1’s operations across all OpCos, independent of location.

Using the power of being OneGroup and leveraging synergies, CDC enables transparency of resources, key skills and knowledge expansion and personal career growth opportunities’ enhancement, paired with job stability.

You will know we are the right place for you, if you are driven by:

• •Opportunities to learn and build your career.
• •Meaningful work in a stable and fast-paced company.
• •Diversity of people, projects, and platforms.
• •A supportive, fun, and inspiring place to work.

Role Overview:

Design and evolve A1’s next‑generation Wholesale Billing platform by building scalable Python/Django backend services, driving automation and cloud‑ready engineering practices, and collaborating across teams to deliver reliable, modern and high‑quality solutions.

Role I nsights:

• •Build and evolve A1's future Wholesale Billing platform using Python, Django and modern software engineering practices.
• •Design scalable backend services and APIs while contributing to architecture and technology decisions.
• •Drive automation, observability and cloud-ready solutions to increase reliability and operational excellence.
• •Collaborate closely with business experts, product owners and engineers across the A1 Group.

What M akes Y ou U nique:

• •Strong professional experience with Python backend development and Django.
• •Experience with databases, APIs, Linux environments and modern DevOps practices.
• •Passion for building high-quality software and solving complex technical challenges.
• •Ownership mindset, teamwork and excellent communication skills in English.
• •Experience with cloud, containerization and modern software architecture.
• •Passion for AI, automation and emerging technologies.
• •Previous exposure to large-scale data, billing or transaction processing systems.

Our gratitude for the job done will be eternal, but we’ll also offer you:

• •Innovative technologies and platforms to work with.
• •Modern working environment for your comfort.
• •Friendly, ambitious, and motivated teammates to support each other.
• •Thousands of online and in-person learning opportunities for you to grow.
• •Challenging assignments and career development opportunities in multinational environment.
• •Attractive compensation package.
• •Hybrid working model.
• •Numerous additional benefits, including, but not limited to free A1 services.

If you have any questions, please do not hesitate to contact : Svetlina Vazharova .