company logo

.NET Backend Developer

A1 Telekom Austria Group.com

Office

София, ул. Кукуш 1, сграда 7, етаж 7, Bulgaria

Full Time

Strength. Care. Growth

Did you know that A1 Bulgaria is working on international projects as well?

Our wide portfolio has long past the telecom services, and we are now offering digital solutions to millions of corporate, public, and private customers.

State-of-the-art technology, the latest innovations, and extremely talented professionals in various areas help us deliver the best-in-class products, services, and customer experience. 

You’ll know A1 Bulgaria is 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.
  • Would you like to join us?
  • Daniel Yordanov is looking for a new team member.
  • 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.
  • Would you like to join us?
  • Daniel Yordanov is looking for a new team member.

We are looking for a talented engineer passionate in .NET technology to join our growing software development team in Sofia.

Your Daily Routine Would Include:

  • Analyzing code, requirements, system risks, and software reliability;
  • Developing new features of software products for our clients;
  • Bug fixing, customizations and software support;
  • Taking responsibility of code quality and on-time completion of tasks;
  • Communicating with business consultants and participating ins daily meeting with your team.

We’ll know you can make it if you have:

  • Experience with.NET Core with C Sharp;
  • Knowledge in ASP.NET Core Web API and REST APIs;
  • Experience with PostgreSQL or MSSQL or other relational DB;
  • Familiarity with messaging systems such as ActiveMQ;
  • Experience with caching mechanisms (e.g., in-memory, Redis);
  • Understanding of Algorithms, Data Structures, OOP, and Design Patterns;
  • Experience with containers (Docker/Kubernetes) will be considered an advantage.

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

  • Innovative technologies and platforms to “play” with;
  • Modern working environment for your comfort;
  • Friendly, ambitious, and motivated teammates to support each other;
  • Thousands of online and in-person learning opportunities to grow;
  • Challenging assignments and career development opportunities in multinational environment;
  • Attractive remuneration package;
  • Flexible working schedule and opportunity for home office;
  • Numerous additional goodies, including, but not limited to free A1 services, discounts, health insurance and services, sports center, childcare, team and family events, etc.
  • Not sure yet? See us in action in our A1 Blog.
  • Any questions? Contact Nadya Georgieva.
  • Sounds good? Apply now!
  • Deadline for application: 07.11.2025
  • Only shortlisted candidates will be contacted.

.NET Backend Developer

Office

София, ул. Кукуш 1, сграда 7, етаж 7, Bulgaria

Full Time

October 2, 2025

company logo

A1 Telekom Austria Group