Petro Hordiienko
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LanguageENPL
  • Independent software engineer
  • Est. 2016
  • 52.41° N · 16.93° E — Poznań

Ideas, engineered.

Software, systems and AI for teams that move fast. Senior engineering, delivered personally, without the agency overhead.

Start a projectWhat I build
Stack
  • Go
  • TypeScript
  • React
  • Next.js
  • Python
  • Kubernetes
  • Terraform
  • PostgreSQL
  • Solidity
  • LLM · RAG
  • WebRTC
  • AWS · GCP
  • Go
  • TypeScript
  • React
  • Next.js
  • Python
  • Kubernetes
  • Terraform
  • PostgreSQL
  • Solidity
  • LLM · RAG
  • WebRTC
  • AWS · GCP
Petro Hordiienko · Software Engineer & Fractional CTO

About

I turn ideas into reliable, user-centric products for startups and growing teams. Bridging technology and business strategy, so every solution works technically and delivers measurable value.

  • 01

    Results-driven engineering

    Years of designing, building and delivering across industries, leading cross-functional teams and turning complex technical challenges into high-impact outcomes.

  • 02

    Startups, from idea to product

    I help startups succeed by transforming ideas into reliable, user-centric products, with every decision tied to business value.

  • 03

    Crypto meets fiat

    I work at the intersection of decentralized and traditional finance, combining crypto and fiat systems to change how people experience and interact with money.

  • 04

    AI that works today

    Narrow AI already improves existing solutions and optimises processes. I build it into products now and design them for the more capable systems to come.

Building since
2016
Former CTO
Crypto exchange
Principal engineer
AI data platform
Works
Remote · CET

Services

Full-cycle IT services

From a first prototype to systems that handle real money and real traffic.

Fractional CTO. Senior technical leadership a few days a month: roadmap, hiring, architecture and investor conversations.

Discuss your project

Work

Selected portfolio

Products across web, mobile and backend, with the workflows behind them. Open any project to step through its screens.

Filter by

Process

Clear steps, working software every week

  1. 01

    Intro call

    30 minutes about your goal, users and constraints. No preparation needed.

    30 MIN

  2. 02

    Scope & estimate

    A short written plan: architecture, milestones, risks and a cost range.

    2–3 DAYS

  3. 03

    Build in increments

    Weekly demos on a staging environment. Progress you can click, not status reports.

    WEEKLY DEMOS

  4. 04

    Launch & handover

    Production release, documentation and support, or a handover to your team.

    1 WEEK

Engagement

Fixed-scope MVP

Agreed scope and price for a first version.

Engagement

Monthly B2B contract

Ongoing engineering, invoiced monthly.

Engagement

Advisory days

Fractional CTO time, audits and reviews.

Contact

Have an idea? Let's build it.

Tell me what you are working on and where you are stuck.

petro@hordiienko.co
Start a project

Every enquiry is read by Petro personally.