Service Assurance Engineer

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?

Borislav Kosatev is looking for a new team member.

We are looking for a skilled and proactive Service Assurance Engineer to join our team. In this role, you will be responsible for ensuring the performance, availability, and quality of telecom services across our network infrastructure. You will also drive active service probing and test automation initiatives to proactively detect issues and improve customer experience.

Your daily routine would include:

• Monitor end-to-end network and service performance across mobile and fixed networks (2G/3G/4G/5G, IP, VoIP, etc.).
• Ensure proactive service assurance through monitoring tools, probing systems, and automation.
• Detect, analyze, and resolve service issues and network incidents in a timely manner.
• Perform root cause analysis (RCA) and drive permanent fixes to avoid recurrence.
• Collaborate with NOC, Operations, Engineering, and external vendors to resolve complex issues.
• Maintain and improve service assurance platforms (fault, performance, probing, and service monitoring systems).
• Generate reports and KPIs related to service performance, availability, and customer experience.
• Contribute to continuous improvement initiatives, especially in test automation and service validation.

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

• Bachelor’s degree in Telecommunications, Computer Science, or a related field.
• 3+ years of experience in telecom service assurance, network operations, or support roles.
• Strong understanding of telecom technologies (LTE/5G, IMS/VoLTE, IP networks).
• Hands-on experience with monitoring and service probing tools.
• Experience in test automation, scripting, or service validation frameworks.
• Knowledge of protocols such as TCP/IP, SIP, Diameter, SS7.
• Experience with troubleshooting complex network/service issues.
• Strong analytical skills and attention to detail.

Nice to Have :

• Experience with automation tools and scripting (Python, Bash, etc.).
• Knowledge of cloud-based telecom architectures.
• Experience with data analytics and visualization tools.

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