Bringing ideas to life.


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.

All about our company is just a click away @

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

Spasimir Arsov is looking for a new team member:

Senior Linux Administrator (messaging services)

We are looking for new colleague as a Senior Linux Engineer (messaging services) to contribute with unique expertise and ideas and to help us continue growing and developing together as part of our team in Sofia.

Your daily routine would include:

  • Supporting your colleagues in activities in the operating phase of various services based on open source (Enterprise E-Mail Cluster, NextCloud, Linux ELK Stack, Ansible, Splunk etc.);
  • Working on solution-oriented, complex, cross-topic customer enquiries/problems and use your expertise to solve these in direct contact with our customers;
  • To be responsible for the regular implementation of the patch strategy, create reports, compliance checks, and coordinate these with the respective peers;
  • To be responsible for technical documentation and updates of service-related information;
  • Ensuring operational compliance with service level agreements (SLA) and quality key performance indicators (KPI) and deal with complex, cross-thematic customer problems in a solution-oriented manner.

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

  • At least 5 years of professional experience in Enterprise LINUX environments;
  • Good technical knowledge of the operating system Debian, RHEL etc.;
  • In-depth knowledge of open-source applications, primarily Postfix Dovecot, rSpamD, Apache, Nginx, Git and Firewalld;
  • An interest in further training opportunities is required;
  • Experience with agile working methods (Scrum, Kanban etc.);
  • Basic understanding of scripting or programming languages (Lua, Python, PHP) will be considered as advantage;
  • Very good written and spoken English.

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.

PS It’s all very real, we’ve got all kinds of awards as well to prove it.

Deadline for applications:
5 October 2023

Only shortlisted candidates will be contacted.