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Šimon J.ŠJ

Šimon J.

Senior Software Engineer And SW architect

€420/day
Olomouc, CZ
8-15 years

Average response time: 1 hour

About Šimon

Do you need an engineer who owns the product, not just the tickets?
I design high-performance, secure, and scalable systems. With nearly 20 years of experience (starting at age 8), I bridge the gap between deep technical roots and business growth.

Why hire me?

  • Performance-First: I specialize in memory management, concurrency, and low latency. I write code that respects the hardware, whether for real-time sensors or high-frequency data.
  • AI-Augmented, Human-Architected: I don’t blindly generate code. I leverage AI as a force multiplier to automate boilerplate and accelerate refactoring. This frees me to focus 100% on architecture, edge cases, and complex logic.
  • Greenfield & Distributed Systems: Expert in "zero-to-one" projects. I use event-driven architectures (Kafka), microservices (DAPR), and Go/Rust to ensure scalability from day one.
  • Fullstack: I can deliver the whole application with Go/Rust, NextJS/React/Typescript.
  • Linux & Open Tech: My Linux-based workflow is built for speed. I avoid vendor locks—I use open technologies so your project remains independent. I don't want to lock you in. You will want to stay :)


Tech Stack:
  • Go (Golang), Rust, Zig backend for raw performance
  • React/TypeScript for robust frontends.
  • Expert in both monoliths and cloud microservices.

I am an independent professional who takes full ownership. If you value engineering excellence over mere task-solving, let’s build together.
  • Czech

    Native or bilingual

  • Spanish

    Basic

  • English

    Fluent

  • Russian

    Basic

  • German

    Basic

Remote only
Primarily works remotely

Experience

  • Edhouse s.r.o.,
    Go Developer
    DIGITAL AND IT
    January 2025 - January 2026 (1 year)
    Olomouc, Czechia
    Backend development of cloud application with microservice architecture Go (Fiber, GRPC, GORM), PostgreSQL, and DAPR.

    --------------------------------------------------------

    Developing Golang app for glass furnace optimization with microservices and concurrency.

    Both HTTP and GRPC servers used.
    GO SQL DAPR Microservices Docker
  • Engeto s.r.o.
    Javascript/Typescript lecturer
    DIGITAL AND IT
    November 2021 - Today (4 years and 7 months)
    Brno, Czechia
    Leading lectures on fundamentals from TypeScript and JavaScript. Providing support for students and validating their projects.
  • EcoRoad.CZ s.r.o.
    PHP & SQL Developer
    January 2021 - January 2023 (2 years)
    Olomouc, Czechia
    Maintenance and feature development for estate watching web app in PHP (Nette), MariaDB, Docker, Redis.

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Education

  • Teaching IT and Mathematics
    Palacký University
    2024
    Teaching IT and Mathematics
  • Information Technology
    Faculty of Information Technology
    2020
    Information Technology

Skill set

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