Kozak Technologies Inc

00Kozak Technologies IncEst. 2025

Advanced engineering for AI-enabled product systems.

Independent engineering and applied-AI consultancy in Los Angeles, founded by Nazar Kozak — IEEE Senior Member.

Independent engineering and applied-AI consultancy in Los Angeles, founded by Nazar Kozak (IEEE Senior Member). 11 years across founding-engineer, mobile architecture lead, and staff-IC roles at companies including Yahoo, American Honda, Datasya, and Appodeal.

Los Angeles, California·Est. 2025·IEEE #101490965

01Products

One product, shipping.

Kozak Technologies builds where engineering rigor and clinical evidence meet on-device AI.

Disfluo

Speech AI · iOS + Web
Live · v1.0

Clinically-aware on-device speech AI for fluency therapy across the lifespan. Two-sided iOS patient app and Next.js therapist dashboard.

  • ArchitectureAll inference runs on the patient's iPhone — audio never leaves the device, by schema design
  • Research basisBacked by four research papers in flight (Computer Speech & Language, Speech Communication, IEEE/ACM TASLP, plus published prior work)
  • Open weightsOpen-source models released on Hugging Face Hub
  • IPPatent pending on anxiety-aware multimodal fusion methodology
Therapist dashboard→whisper-small-disfluent-smoothed-lora↗whisper-small-disfluent-verbatim-lora↗

02Engineering services

Selective consulting and senior-IC engagements.

Capability areas. Engagements are scoped tightly and chosen for technical fit.

  1. 01 ⁄ 05iOS / macOS native development — Swift 6, SwiftUI, on-device ML via CoreML and the Apple Neural Engine
  2. 02 ⁄ 05Cross-platform mobile — React Native, Flutter
  3. 03 ⁄ 05Mobile SDK architecture and distribution at scale
  4. 04 ⁄ 05Speech and audio signal processing
  5. 05 ⁄ 05AI / ML model training, optimization, and on-device deployment

03Selected engagements

Named clients. Real metrics.

Five strongest engagements from approximately ten across the past decade.

October 2025 – present

Yahoo Inc.

Staff Software Engineer, Orion Browser team

Real-time tab clustering, AI-powered browser features, OrionClusteringSuite testing framework.

March – October 2025

American Honda Motors

Mobile Tech Lead

Vehicle companion app architecture and release management.

2022 – 2024

Datasya Inc.

Lead Mobile Engineer → Head of Mobile

Built and led a 6-engineer team. 10× inference improvement. Helped secure $3M seed.

2023 – 2024

Shader Inc.

Senior iOS Engineer (part-time)

40% GPU cost reduction. Contributor on a $610K seed round.

2014 – 2018

Appodeal Inc.

Founding Engineer

Built the Unity SDK responsible for ~80% of company revenue and the dynamic multidex loader serving millions of apps. Independent Carta 409A valuation: $98.6M company, $97,520 founder equity.

Additional engagements available on request.

04Founder

Nazar Kozak.

Engineer, IEEE Senior Member.

Engineer; IEEE Senior Member (peer-reviewed elevation). Currently Staff Software Engineer at Yahoo Inc. (Orion Browser team). Fellow of the Institution of Engineering and Technology (FIET) — application under assessment, 2026.

Independent research on pediatric speech AI through the Disfluo platform. Four research papers in flight (Computer Speech & Language, Speech Communication, IEEE/ACM TASLP, plus prior published work on cross-platform SDK architecture). Personal background: stuttered from age 7 — direct motivation for the speech-AI work.

  • →IEEE Senior Member · peer-reviewed elevation
  • →FIET · application under assessment, 2026
  • →Toptal · Top 3% network member since 2021
  • →Patent pending · anxiety-aware multimodal fusion methodology (Disfluo)

Academic publications and research detail at nazarkozak.github.io.