Kodart

Estonia-based software and AI engineering studio

Japan-grade Software Engineering from an Estonian Studio

Kodart helps companies build secure, scalable mobile, backend, AI, and realtime voice systems led by a senior engineer with 20+ years of production experience and 11 years of Japan-based engineering discipline.

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Positioning

Founder-led technical ownership for serious software products

Kodart is a founder-led boutique software and AI engineering studio based in Estonia. We help companies worldwide build secure, scalable mobile, backend, AI, and realtime voice systems through direct senior technical collaboration, clear communication, and practical product execution.

The practical initial focus is Turkey and Europe, with a company structure and communication model that also welcomes global clients, including teams in the US.

Service Packages

Clear ways to bring senior engineering into your product

Voice Agent Production Audit

Our flagship specialist offer. One week, fixed scope, fixed price from €2,900. For teams shipping voice agents or realtime audio features to production, we review the system that actually decides whether users stay on the call.

  • Latency budget: end-to-end measurement and where the milliseconds go
  • Interruption and barge-in handling
  • Audio pipeline review: capture, encoding, transport, playback
  • Cost controls: per-provider budgets, model routing, runaway-spend protection
  • Failure modes: region loss, TURN fallback, provider outages, reconnection
  • Deliverables: production-readiness report plus a prioritized fix list

Software Health Check

A focused technical audit for companies that want to understand the real condition of their software product. The outcome is a prioritized technical risk report and a practical 90-day action plan.

  • Architecture review
  • Backend/API review
  • Mobile app review
  • Security and data handling review
  • Deployment and infrastructure review
  • Technical debt map
  • 90-day improvement roadmap

Secure Software Training

Practical secure software development training for engineering teams. Covers OWASP principles, API security, authentication, token handling, mobile app security, logging, data privacy, AI usage risks, and production-ready security habits.

  • Software teams
  • Product teams
  • CTOs and technical managers
  • Startups and SMEs handling customer data

Fractional CTO / Technical Advisory

Senior technical leadership for companies that need stronger technical direction, better architecture decisions, and clearer engineering execution.

  • Monthly advisory sessions
  • Architecture decision support
  • Code and system reviews
  • Technical roadmap review
  • Hiring/interview support if needed
  • Engineering process improvement

AI, Mobile & Realtime Product Studio

Design and development support for mobile apps, backend systems, AI assistants, voice-first products, realtime communication, and production-grade MVPs.

  • Realtime voice and communication systems
  • LiveKit/WebRTC realtime architecture
  • AI assistants and LLM integrations
  • iOS / Flutter apps
  • Node.js / backend systems
  • SaaS/product MVPs

Engagement Options

Flexible ways to bring senior technical ownership into your product, team, or roadmap.

Who is behind Kodart?

Direct collaboration with Nesim Tunc

Nesim Tunc, Founder & Principal Engineer

Kodart is led by Nesim Tunc, a senior software engineer with 20+ years of professional software development experience. Nesim spent 11 years in Japan, working across mobile, backend, realtime systems, product architecture, and production-grade software delivery.

His engineering style combines practical execution, clean architecture, security awareness, and Japan-inspired discipline around quality and reliability.

Clients work directly with Nesim Tunc, the founder and principal engineer behind Kodart. This keeps communication clear, decisions fast, and technical ownership close to the product.

Learn more about Nesim
20+ years Professional software engineering experience
11 years Japan-based engineering experience
Founder-led Direct senior technical collaboration
Remote + in person Available remotely and for useful Turkey/EU meetings

Case Study

What Kodart builds when it owns a product end to end

RotaTalk — multi-region realtime voice platform

Kodart designed and shipped RotaTalk end to end: a voice-first communication platform for truck drivers, live on the App Store and Google Play in 11 UI languages. Architecture, audio pipeline, backend, mobile apps, and AI assistant were all built in-house.

  • Custom PCM streaming pipeline with <200 ms average end-to-end latency
  • LiveKit multi-region clusters with TURN relays and automatic failover
  • Microphone floor-control state machines on Node.js + Redis, keeping one speaker per channel under concurrency
  • Multi-LLM agentic assistant across Gemini, OpenAI, and Anthropic with automatic provider fallback, per-provider budget controls, and SSE streaming
  • Shipped to production on iOS and Android in 11 UI languages
Realtime voice LiveKit / WebRTC Multi-LLM agents Mobile rotatalk.com

Need senior technical help for your product or engineering team?

Whether you need a voice agent production audit, a software audit, secure software training, fractional CTO support, or product development help, Kodart can help you move faster with clearer technical direction and stronger engineering execution.

Book a Kodart technical consultation with Nesim Contact Kodart
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