Insights

Strategic Partnership SESTEK is part of a larger ecosystem through acquisition by Unifonic and has a track record of strategic collaborations with major CPaaS and enterprise players, signaling openness to channel and integration partnerships that can accelerate joint sales with CSPs, BNPLs, and large banks.

Enterprise Footprint With 500+ enterprise clients across 20 countries and a focus on AI-powered customer service automation, SESTEK offers a proven reference base and potential upsell opportunities for deepening deployments in contact centers, healthcare, banking, and telecom sectors.

Product Leadership In-house speech recognition and NLU capabilities position SESTEK as a differentiator in automating simple tasks and self-service, creating cross-sell potential to customers seeking higher accuracy, lower latency, and robust analytics through SESTEK Analytics and Biometrics.

Analytics and Care SESTEK Analytics delivers end-to-end insight and quality management, enabling supervisors to score agents and improve experiences; this creates opportunities to bundle performance management, coaching, and agent enablement services with existing deployments.

Growth Signals Recent partnerships and product expansions such as Agentic AI capabilities and collaborations with CallTower, Five9, ING, and CCCglobal indicate momentum in expanding go-to-market channels and verticals, suggesting ripe opportunities for co-sell motions and regional expansion.

SESTEK Tech Stack

SESTEK uses 8 technology products and services including Qlik, Amazon Web Services, Microsoft SharePoint, and more. Explore SESTEK's tech stack below.

SESTEK's Email Address Formats

SESTEK uses at least 1 format(s):
SESTEK Email FormatsExamplePercentage
First.Last@sestek.comJohn.Doe@sestek.com
96%
First.Middle@sestek.comJohn.Michael@sestek.com
1%
Last@sestek.comDoe@sestek.com
2%
Last.First@sestek.comDoe.John@sestek.com
1%

Frequently Asked Questions

What is SESTEK's official website and social media links?

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SESTEK's official website is sestek.com and has social profiles on LinkedIn.

How much revenue does SESTEK generate?

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As of August 2026, SESTEK's annual revenue is estimated to be $500M - $1B.

What is SESTEK's NAICS code?

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SESTEK's NAICS code is 5112 - Software Publishers.

How many employees does SESTEK have currently?

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As of August 2026, SESTEK has approximately 200 employees across 4 continents, including AsiaEuropeNorth America. Key team members include President: S. K.Head Of Pmo: A. A.Founder & Ceo: L. A.. Explore SESTEK's employee directory with LeadIQ.

What industry does SESTEK belong to?

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SESTEK operates in the Software Development industry.

What technology does SESTEK use?

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SESTEK's tech stack includes QlikAmazon Web ServicesMicrosoft SharePointMicrosoft SQL ServerPostgreSQLFigmaWP EngineCursor Code Editor.

What is SESTEK's email format?

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SESTEK's email format typically follows the pattern of First.Last@sestek.com. Find more SESTEK email formats with LeadIQ.

When was SESTEK founded?

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SESTEK was founded in 2000.
SESTEK logo

SESTEK

Software DevelopmentIstanbul, Turkey51-200 Employees

SESTEK is a mid-sized software development company based in Istanbul, Marmara Region, that has focused on AI-powered conversational automation for customer service since 2000. Its research and development team, consisting of more than 100 engineers, builds end-to-end conversational solutions designed to understand and respond to customer inquiries. The company serves more than 500 enterprise clients across about 20 countries, helping them digitize and streamline their customer service operations. 

SESTEK offers a product portfolio that includes a virtual agent for handling routine interactions, analytics for extracting insights from customer conversations, and a biometric-based caller verification capability. In 2022, SESTEK was acquired by Unifonic, a leading CPaaS provider, placing it within a broader communications platform ecosystem.

Section iconCompany Overview

Website
sestek.com
NAICS Code
5112 - Software Publishers
Founded
2000
Employees
51-200

Section iconFunding & Financials

  • $500M - $1B

    SESTEK's revenue is estimated to be in the range of $500M - $1B

Section iconFunding & Financials

  • $500M - $1B

    SESTEK's revenue is estimated to be in the range of $500M - $1B

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