AI-native application builder

Cofounder @ Ignostiq· Building AI-native products for HR

AI-native
application builder

Cofounder @ Ignostiq

Design + Code + AI agentsPulse360 live with EU pilots20+ yrs

Now

Cofounder & CTO @ Ignostiq · Pulse360 live with EU pilot organizations

Recently shipped

AI WooCommerce — solo-built design, code, deploy

Stack

Next.js · NestJS · TypeScript · React Native · LLM agents

Talk to Sergei

Free 30-min consultation. Honest feedback, no obligation.

Biography

THE PERSON
BEHIND

I'm cofounder & CTO at Ignostiq, an AI-native company building products for HR. Our first product, Pulse360, is live with EU pilot organizations — backed by Tehnopol AI Accelerator and the University of Milan, built with 80+ HR leaders. The combination I bring is rare: senior-level design at scale + two SaaS products shipped solo + currently building AI-native products end-to-end. 20+ years across design, full-stack engineering, and AI agents. Real products in real markets — not theory, not consulting.

Scenarios

When founders
bring me in

AI prototype to production

I'll audit your prototype, harden the architecture for reliability and scale, tighten retry / rate-limit handling, optimize token budgets, and ship to production with proper CI/CD. You get a real working system users will pay for — not a demo that breaks on the third user.

EngagementFrom 4 weeks

InvestmentFrom $6,360

SavingsCut API costs 50-70%, ship production-ready

Need to impress investors in 4 weeks

I'll identify what investors actually examine, polish the UX issues that hurt credibility, fix performance, sharpen the visual design, ship the demo flow, and rehearse the live walkthrough with you. You get an investor-ready product fast.

EngagementFrom 4 weeks

InvestmentFrom $6,360

SavingsBetter valuation, faster close

Behind schedule, need senior help NOW

I'll start day one — pick up urgent work, unblock the team, ship the critical features (design and code), and stabilize the runway. You get immediate impact without onboarding delay.

EngagementFrom 1 month

InvestmentFrom $6,360

SavingsBack on track in 3-4 weeks, avoid hiring delays

Technical debt slowing AI experiments

I'll audit the codebase, identify the choke points blocking AI iteration, refactor where it pays off fastest, modernize the architecture without breaking existing features, and set the quality bar for what comes next. You get experiment velocity back without a risky rewrite.

EngagementFrom 6 weeks

InvestmentFrom $9,540

Savings2-3x faster experiment cycles, avoid full rewrite

Non-tech founder needs product owner

I'll validate your idea with users, design the UX, build the full-stack product including AI agents where they fit, deploy to production, and iterate based on real usage. You get weekly progress and a product that evolves with the market.

EngagementFrom 3 months

InvestmentFrom $19,080

Savings70% cheaper than building a team, preserve equity

What I don't do

—Design-only work without engineering
—Work in cultures that treat time as a cheap resource
—Full-time roles

Testimonials

WHAT OTHERS
SAY

I brought Sergei in as cofounder because he covers what usually takes three people — product design, full-stack engineering, and AI agents — and actually ships. Pulse360 went from concept to live EU pilots on his architecture. You hand him an outcome, not a spec.

Cofounder & CEO @ Ignostiq

Sergei designed the real-time infrastructure dashboard thousands of us relied on every day. He worked inside heavy legacy and security constraints without ever losing sight of the user — adoption went up, troubleshooting and support load came down. Calm, precise, genuinely senior.

Agile Product Owner @ Swedbank

Sergei built our design team from nothing and set the standard for the Paxful brand. He led with a system and real ownership instead of micromanagement, and made everyone around him better. The best design lead I have worked under.

Product Designer @ Paxful

Use of
modern tech

AI + Design

AI expands the solution space — layout variants, palettes, component ideas in seconds. Taste and intuition decide which to keep. I use AI to enumerate, judgment to choose. The goal is better outcomes, not faster settling.

AI + Leadership

AI handles the mechanical: meeting notes, drafts, progress tracking, follow-ups. That frees me for the work that needs a human — strategy, people, hard calls. I control the AI. The AI does not control me.

AI + Code

Code has become cheap. Knowledge, experience, and the ability to orchestrate AI are what matter now. I accept generated code only when I understand what it should do. Everything else: verified or rejected. No-trust by default.

Skills

KNOWLEDGE
I USE

AI & AGENTS

LLM Providers

AnthropicOpenAI

Agent Stack

- Tool use & function calling
- Structured outputs & evals
- Streaming + multi-step agents
- Prompt caching & RAG

Reliability

- Retry & rate-limit handling
- Token budget control
- Error recovery & fallbacks
- Output validation

Patterns

Tool useStructured outputsRAGStreaming

ENGINEERING

Frontend

Next.jsReactReact NativeExpo

Backend

NestJSNode.jsApollo GraphQLREST APIs

Data & Real-time

PostgreSQLDrizzleMongoDBElasticsearchSocket.io

Languages & Styling

TypeScriptTailwind CSSShadcn

DevOps

- Docker & Docker Compose
- CI/CD pipelines (GitHub Actions)
- Self-hosted deploys at scale
- Standalone Next.js output

DESIGN AT SCALE

Tools

Figma

Systems

- Component libraries & docs
- Design tokens (color, typography, spacing)
- Atomic design methodology
- Cross-team handoff workflows

Research

- User research & usability testing
- Journey mapping & personas
- Information architecture
- Wireframing & prototyping

Earned at scale

- Bank dashboard for 5,000+ employees daily
- Crypto exchange used by millions
- Design team built from zero (Paxful)
- Cross-functional design leadership

Portfolio

detailed
use cases

Full StackAI AgentsCofounderProduct

Call to Action

LET'S
TALK

book a free 30-minute consultation.
i'll audit your situation and give you honest feedback — even if you don't hire me.

→ AVAILABILITY: GLOBAL, TIMEZONE-FLEXIBLE

→ CURRENT LOCATION: ESTONIA 🇪🇪