Yettel.Bulgaria Tech Stack

Telecom operator modernizing BSS and 5G infrastructure with cloud-native observability

Telecommunications Sofia, Sofia 1,001–5,000 employees Privately Held

Yettel Bulgaria operates a regional telecom network across Central and Eastern Europe with 1,800+ employees and 99% population coverage. The tech stack reveals a modernization push: heavy Kubernetes + GCP adoption paired with observability tooling (Grafana, Loki, Tempo, OpenTelemetry), security scanning (OPA, Checkov, Trivy, CrowdStrike), and RAG/LLM components suggest active migration from legacy billing systems toward cloud-native infrastructure. Active hiring in security (4 roles) and engineering (9 roles) directly maps to stated projects around 5G core governance, cloud-native transformation, and business support system overhaul.

Tech Stack 46 technologies

Core StackOracle PL/SQL Kubernetes Swift Python BigQuery Vertex AI FastAPI Docker Terraform LangChain RAG Grafana Loki OpenTelemetry Helm AWS Adobe Premiere Pro After Effects SQL GitOps Objective-C Xcode XCTest Git GCP LlamaIndex Tempo Mimir CapCut+9 more

AdoptingCrowdStrike OPA Checkov Trivy

What Yettel.Bulgaria Is Building

◆Challenges

Optimizing business support systems
Ensuring compliance with bulgarian legislation
Ensuring compliance with telecom cybersecurity standards
Transition to cloud-native workflows
Performance and cost optimization across cloud environments
Improving customer service speed
Boosting agent productivity
Identifying inefficiencies and bottlenecks
Optimizing total cost of ownership
Ensuring accuracy of new solutions

▲Active Projects

Functional specification documentation of new bss
Cloud-native observability platform
Long-term strategic initiatives for billing and order management
Integration of third-party systems into bss
Observability component integration
Lead security governance for 5g core and edge deployments
Ai-powered applications for cloud-native transformation
Rag-based virtual assistants
Call analytics and ocr solutions
Performance and cost optimization

Hiring Activity

Accelerating30 roles · 15 in 30d

Department

Engineering

Sales

Security

Marketing

Data

Ops

Construction

Design

Seniority

Mid

Senior

Junior

Manager

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About Yettel.Bulgaria

Yettel Bulgaria is a telecommunications operator within the e&PPF Telecom Group, serving customers across Central and Eastern Europe. The company operates over 180 retail locations, serves mobile subscribers across Bulgaria with >99% network coverage, and has launched 4G (2015), VoLTE (2018), and 5G networks. Its 1,800-person workforce manages mobile infrastructure, customer service, and billing operations. Current strategic focus areas include modernizing legacy billing and order-management systems, deploying cloud-native observability, securing 5G edge deployments, and implementing AI-powered customer service tools.

HeadquartersSofia, Sofia

Company Size1,001–5,000 employees

Hiring MarketsBulgaria

Frequently Asked Questions

What tech stack does Yettel Bulgaria use?

Oracle, PL/SQL, SQL, Python, GCP, BigQuery, Kubernetes, Docker, Terraform, Grafana, and observability tools (Loki, Tempo, OpenTelemetry). Adopting OPA, Checkov, Trivy, CrowdStrike for security and compliance.

What is Yettel Bulgaria working on?

Cloud-native observability platform, billing/order management system modernization, 5G security governance, RAG-based virtual assistants, call analytics, and cost optimization across cloud environments.