SESTEK Tech Stack

AI-powered voice and conversational automation for enterprise customer service

Software Development Sarıyer, İstanbul 51–200 employees Founded 2000 Privately Held

SESTEK builds conversational AI products (speech recognition, NLU, voice biometrics) for enterprise customer service teams. With 100+ engineers developing proprietary speech and language models since 2000, the company serves 500+ clients across 20 countries. Current infrastructure focus—Kubernetes, Prometheus, Terraform, OpenTelemetry—paired with active hiring in support and engineering roles, suggests a scaling phase centered on reliability and deployment automation rather than core product innovation.

Tech Stack 42 technologies

Core StackKubernetes Prometheus Grafana Elasticsearch OpenTelemetry AWS Angular Helm Docker Jenkins Ansible Terraform Linux OpenAI Cursor GitHub Copilot Figma Azure DevOps Postman Jira Miro containerd Git Nexus Vault Logstash Kibana Claude Gemini Azure+11 more

What SESTEK Is Building

◆Challenges

Maintaining stable production environments
Reducing response times
Expanding sales pipeline in gcc
Partner ecosystem sales

▲Active Projects

Ai agent design and development
Reliability testing
Disaster recovery strategy
Sbc configuration
Pipeline development through ecosystem partners
Infrastructure as code automation
Internal deployment pipelines
High availability of live systems
Customer journey optimization for ai agents
Sestek product deployments

Hiring Activity

Steady15 roles · 4 in 30d

Department

Support

Engineering

Product

Sales

Ops

Seniority

Senior

Mid

Intern

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About SESTEK

SESTEK is a conversational automation platform built on proprietary speech recognition and NLP technologies. The company operates three main product lines: Knovvu Virtual Agent (IVR and chatbot automation), Knovvu Analytics (call and interaction data analysis), and Knovvu Biometrics (voice-based identity verification). Founded in 2000, SESTEK was acquired by Unifonic (a CPaaS provider) in 2022. The engineering team is distributed across Turkey, Poland, UK, and UAE, serving enterprise clients in financial services, telecommunications, and customer support operations.

HeadquartersSarıyer, İstanbul

Company Size51–200 employees

Founded2000

Hiring MarketsPoland, Turkey, United Arab Emirates, United Kingdom

Frequently Asked Questions

What tech stack does SESTEK use?

Kubernetes, Docker, AWS, Terraform, Prometheus, Grafana, Elasticsearch, Jenkins, Git, and OpenTelemetry for infrastructure. LLMs (OpenAI, Gemini, Claude) integrated via SDK. Development tools include GitHub Copilot, Cursor, Jira, and Azure DevOps.

Where is SESTEK headquartered?

Sarıyer, İstanbul, Turkey. The company was founded in 2000 and employs 51–200 people across multiple countries.