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Portrait of Iveta Simonyi

Senior frontend developer · Product owner

I build the frontend a company then runs on.

From junior to senior frontend developer and product owner in three years. I write the code and the spec, and I can tell you what is not worth building.

Ivet.snaselova@gmail.com →
Brno / Vracov · remote LinkedIn ↗ CV ↓

About

I see the product and the code at once

I am Iveta Simonyi (formerly Snášelová). I do frontend at Speedlo Pro, a system for restaurants and delivery, where since 2023 I have gone from junior to senior developer and product owner.

The strongest thing I do is not a particular framework. It is refusing to take a brief as given: questioning it, estimating how hard it will be and how long it will take, and finding a simpler route to the same goal. That is why I write specs as often as I write code.

Beyond the development itself, I also shaped how frontend gets done at Speedlo in the first place. I wrote the FE Philosophy, coding guidelines, development lifecycle and deployment process, so that the work is not only consistent but so that anyone joining us can actually find their way around it. I run code reviews, onboarded a senior colleague, lead a mid-level developer, and wrote the technical assignments used in our interviews. And for a while I was the only frontend developer, in a company of around twenty-five people.

I am a perfectionist who can still consciously decide what to leave alone when it is not worth it.

Off screen

  • The gym and long walks
  • Time with friends
  • Travelling. We rode the whole length of Vietnam, which is why working from anywhere matters to me.
Iveta Simonyi leaning against a wall, turned towards the camera

Iveta Simonyi · formerly Snášelová

Experience

From junior to product owner

  1. 2023–now

    Speedlo Pro

    Freelance · remote · Pardubice

    Senior Frontend Developer & Product Owner

    • I am tech lead on several products: a universal branded e-shop, the waiter app with QR ordering, kiosk applications and the backoffice.
    • I set the frontend technical direction and standards for the company, and run code reviews.
    • Onboarded a senior colleague; currently leading a mid-level developer.
    • I propose solution options, estimate effort and time, and argue both sides.
    • Product owner side: client meetings, prioritisation, roadmap, writing specifications.
    • Beyond web, mobile and kiosk applications in React Native.
  2. 2023–2024

    Soleqa s.r.o.

    Mobile app for IoT device management

    Junior React Developer

    • I designed the interface and built the entire React Native frontend, wired up over GraphQL.
    • Overview and sensor dashboards, including historical charts with switchable ranges and a two-period overlay.
    • A condition system for automation: groups of conditions over sensors and actuators, with priority to resolve conflicts.
    • The app was also my bachelor thesis at Brno University of Technology, built to Soleqa’s requirements.
  3. 2021–2022

    3Pillar Global Czechia

    Brno · hybrid · part-time

    Junior Golang Developer

    • Started as a backend and DevOps developer in Go.
    • Gradually realised backend was not my direction and moved to frontend for good.
  4. 2019

    The Perfectionist’s Café, Heathrow Airport

    London, UK · summer job during secondary school · outside the field

    Hostess

    • During a summer holiday at secondary school I went to London on my own and worked in a restaurant at Heathrow Airport.
    • Whole shifts in English, with guests from all over the world, in an operation where you have to be quick and courteous at the same time.
    • Not a technical role, but the most concrete evidence I have that I will step into the unknown and make myself understood.
  5. Freelance alongside

    • For the Mlsáme spolu patisserie I built a complete visual identity from scratch in 2025: logo, colour system, brand manual, product catalogue and website. Case study →
    • Frontend support on a website for a fitness brand, and Shopify setup for a supplements brand.
    • Consulting on frontend and technical direction for smaller projects.

Selected work

Five projects

These case studies stand on decisions and numbers rather than screenshots. For client projects that is also a requirement, because some of it I am not allowed to show.

Outcome

Numbers, not adjectives

The strongest evidence I have comes from the first project above, the rewrite of a customer ordering platform for one of Speedlo’s largest clients, a Czech fast-food chain. We launched it in September 2025, into live trading. This is how the first day went.

active users on day one
~1,100 active users on day one
of all visitors completed a purchase
50% of all visitors completed a purchase
completed the order after reaching checkout
82% completed the order after reaching checkout
of visits came from mobile
85% of visits came from mobile

Figures from Google Analytics. The client’s revenue figures are not published here.

Read the full case study →

Skills

What I work with

Daily stack

We fetch data through GraphQL and Apollo rather than REST.

  • Next.js
  • React
  • TypeScript
  • GraphQL + Apollo
  • Zustand
  • Tailwind CSS
  • Chakra UI
  • React Native

Quality and operations

  • CI/CD pipeline
  • Vitest
  • Code review
  • Documentation

Product

  • Backlog and prioritisation
  • Effort and time estimation
  • Writing specifications
  • Client meetings
  • Roadmap

Tools

  • Bitbucket
  • Notion
  • YouTrack
  • Figma

Design

Including visual identity from scratch: logo, colour system, brand manual.

  • Visual identity
  • Brand manual
  • Product catalogue

Working knowledge

Listed honestly as fundamentals, not as a headline skill.

  • Go
  • Docker
  • Kubernetes
  • PostgreSQL
  • MySQL
  • MongoDB

AI in the workflow

I use Claude Code and GitHub Copilot daily. More interesting than the tools is the degree of control, and for me that follows from how long the code has to live.

On a small static site that will not be maintained, writing everything by hand or reviewing every line is not worth it; instructing the AI well is enough. On complex long-lived systems it is a different situation: AI makes hidden mistakes that only surface a year later. There, the output has to be reviewed rigorously.

What I use it for

  • Writing repetitive parts of the code faster.
  • Navigating unfamiliar code, typically finding the cause of a bug. This is where it is most effective.
  • Documentation.
  • Checking my own code before sending it to review.
  • Drafting briefs for developers, though I review those too, because AI writes needlessly long descriptions.

Education

Engineering and management

  1. 2016–2020

    Klvaňovo gymnázium, Kyjov

    Maturita Secondary school leaving examination
  2. 2020–2024

    Brno University of Technology, Faculty of Information Technology

    Bachelor's degree (Bc.) Information Technology
  3. 2025–2026

    University of Economics and Management

    Three micro-diplomas Management

Languages

Czech
native
English
A full working day, meetings and client conversations included.
German
beginner

References

What people say

“ I want to express sincere thanks to everyone involved. Above all to Ivet, who gave it everything over the last six months and more, and in the final two months also took on project management and responsibility for client communication. ”
Speedlo leadership, September 2025
▸ Show the original
Screenshot of the original Slack message
“ The greatest thanks go to Ivet, who kept a firm hand on the project from beginning to end. Thanks to her the site is polished down to the last detail, and in the final phase she also took over as Product Owner. ”
A colleague from the team, September 2025
▸ Show the original
Screenshot of the original Slack message
“ This is above all the result of your good work. It is a great feature with a fundamental impact on the client’s business. ”
Speedlo leadership
▸ Show the original
Screenshot of the original Slack message
“ Big thanks to Ivet, who took the project over from me in the final weeks and carried it to the finish with the necessary commitment and rigour. ”
A colleague from the team
▸ Show the original
Screenshot of the original Slack message

Contact

Got a product worth building?

I am looking for a role where frontend and product meet: senior frontend developer, tech lead or product owner. Write to me and I will get back to you.

Primarily remote, Czechia or abroad. Employment or freelance. Happy to travel for onboarding and regular meetings.