A1 Srbija d.o.o. Tech Stack

Telecom infrastructure and digital services across Central and Eastern Europe

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

A1 Serbia operates as the regional hub of A1 Telekom Austria Group, serving over 25 million users across communications, payments, and entertainment. The tech stack emphasizes distributed systems (Kafka, Cassandra, FoundationDB) and infrastructure automation (ServiceNow, Terraform, GitOps, eBPF), while hiring is split equally between engineering and security roles — a pattern that reflects both modernization of legacy telecom infrastructure and an active compliance posture around NIS2 and regulatory audits.

Tech Stack 93 technologies

Core StackLinux Active Directory ServiceNow Jira Rust Go Python MariaDB Cassandra Kafka Prometheus Java AWS Okta UNIX LDAP PowerShell eBPF watsonX REST API FoundationDB Tibco BusinessWorks TIBCO EMS GitOps SQL Exoscale Active Directory Federation Services Bash HSM Windows+62 more

What A1 Srbija d.o.o. Is Building

◆Challenges

Process bottlenecks
Improving telco sales
Maintaining system availability
Maintaining system performance
Ensuring compliance with nis2
Improving soc workflows
Ensuring correct access
Remediation of security issues
Managing audit findings
Closing control gaps

▲Active Projects

Automation of security processes
Automation solutions for business processes
Automation of security operations
Secure architecture design with cloud providers
Joiner-mover-leaver process automation
Acs platform design and implementation
Contributing to assurance metrics and dashboards
Supporting audits and regulatory inspections
Sdn platform
Continuous training and improvement of our chatbot

Hiring Activity

Steady50 roles · 20 in 30d

Department

Engineering

Security

Ops

Sales

Data

Finance

Product

Support

Seniority

Mid

Senior

Junior

Lead

Intern

Notable leadership hires: Process Automation Lead

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About A1 Srbija d.o.o.

A1 Serbia is a subsidiary of A1 Telekom Austria Group, a Vienna-headquartered telecom operator spanning Central and Eastern Europe. The company provides network infrastructure, communications services, payment solutions, and integrated business offerings to a user base exceeding 25 million across Serbia and neighboring markets (Bulgaria, Croatia, Slovenia, Belarus, Republic of Northern Macedonia). The organization operates as a mid-market telecom operator with 1,001–5,000 employees, structured around engineering, security, and operations-heavy functions.

HeadquartersBelgrade

Company Size1,001–5,000 employees

Hiring MarketsBulgaria, Serbia

Frequently Asked Questions

What tech stack does A1 Serbia use?

A1 Serbia runs UNIX/Linux, Active Directory, ServiceNow, Jira, Kafka, Cassandra, FoundationDB, MariaDB, Prometheus, AWS, and Exoscale. Languages include Python, Java, Go, Rust, and Bash; infrastructure is managed via GitOps and HSM.

What is A1 Serbia working on?

Active projects include security process automation, business process automation, secure cloud architecture design, joiner-mover-leaver workflow automation, access control platform (ACS) implementation, SDN platform development, and SOC workflow improvements.