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Timothy TereshchenkoTT

Timothy Tereshchenko

Software Engineer

€125/day
Krakow, PL
3-7 years

Average response time: 1 hour

About Timothy

I am a final-year Applied Informatics student at the Cracow University of Economics (UEK). I have been interested in software development and IT security since the age of 15. I've worked with many programming languages—Go, Rust, JavaScript (Node.js, TypeScript, and different frameworks), and C#—mostly for backend development, though recently I have been working on the frontend a lot too. I've used SQL and NoSQL databases (PostgreSQL and MongoDB), Redis, and I'm familiar with queues, concurrency, etc.

I think the most important skill in software development is the ability to understand architecture, so I like to think of myself as an engineer.

I was always especially interested in Information Systems Security: understanding and finding vulnerabilities, stress-testing applications, data security, etc. For the past six months, I've been working at a company where I focus heavily on that.

I am studying right now, but my classes don't take up too much time, so I am usually free most of the day. I would gladly help anyone who needs a hand with their projects or if you need to develop something from scratch!

I also like to play golf. If you happen to live in Krakow, we can always discuss your project on the golf course with class and no hustle!
  • English

    Native or bilingual

  • Russian

    Native or bilingual

  • Polish

    Fluent

  • Ukrainian

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Reference Business Consulting
    Software Engineer
    TECH
    October 2025 - Today (10 months)
    Website: rbcl.sa
    I am the only Software Engineer in this Saudi Arabia Business Consulting company. I architected and built their public-facing website and all internal enterprise systems completely from scratch.


    What I have done:

    1). Custom Website: Developed the company site from the ground up, implementing features like full internationalization (i18n), a smart search function, and a dynamic Insights blog.
    2). Secure Client Communication: Set up an internal tool that unifies WhatsApp Cloud and email channels into one centralized platform for client communications. Because data security is a priority for me, I avoided third-party SaaS providers entirely—the system is 100% self-hosted, meaning sensitive client data never leaves our servers.
    3). Self-Hosted CMS: Deployed and integrated a custom content management system to give the team easy control over the website's content.
    CMS Customization IT Architecture Content Integration Software Architecture Back-End development

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Skill set

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