Bohdan StarosivetsHire me
Portrait of Bohdan Starosivets

Bohdan Starosivets · Full-stack engineer, Kyiv

I build AI agents, web apps and .NET platforms.

Shipping for clients in the US, UK and Israel since 2022.

Building products
Since 2022
Companies and clients
9
Job Success
100%
Earned
$60K+
Hours
3,000+
Badge
Top Rated Plus

Selected work

The ones I'm allowed to show

Experience

Where I've shipped

I own features end to end, from the database to the UI. I've worked inside product teams and as a freelancer, shipping AI agent platforms, SaaS sites, checkouts and software law firms use every day.

Education
BSc Software Engineering
Taras Shevchenko National University of Kyiv · 2022 — 2026
Languages
Ukrainian · English

  1. Timeslice

    Sep 2025 — Now

    I work on LawOne, the practice management platform law firms run their day on — matters, time, billing and documents. I ship features end to end, from .NET 8 APIs to Blazor screens.

    .NET 8 · ASP.NET Core · Blazor WebAssembly · Telerik UI

  2. Confidential client

    Oct 2023 — Now

    Full-stack and machine learning work on a computer vision platform, from model training to the apps around it. It's under NDA, so that's all I can say here.

    Python · Machine learning · React Native · PHP

  3. Softcery

    Jan — Jul 2025

    Built checkout and payment flows plus merchant dashboards for large stores on 2 platforms, Shopify and BigCommerce. Frontend and back end.

    Go · React · TypeScript · Next.js · PostgreSQL

  4. ACT Labs

    2025

    Shipped 2 AI products: an on-chain marketplace where people and AI agents take on tasks paid through smart-contract escrow, and a platform where autonomous agents run DeFi strategies.

    Next.js · NestJS · ElizaOS · Solidity · Vercel

    Act Flow →Figment →

  5. OtterDev

    2025

    Built fast, responsive marketing sites for client products — an animated landing page for an AI fashion app and a pet grooming SaaS site with 6 audience landing pages.

    Next.js · Sanity · Tailwind CSS · Framer Motion · Firebase

    AI Fashion Discovery →Pet Grooming SaaS Website →

  6. AcuPower

    2024

    New user features and technical SEO for the website of an Acumatica cloud ERP consultancy.

    Web · SEO · Open Graph

  7. Prosper AI

    2024

    Built admin dashboards, client pages and security for an AI platform that values properties and recommends investments, with OpenAI-powered analysis.

    OpenAI API · Cloud functions

  8. Flurium

    2023 — 2024

    Delivered client web apps: e-commerce stores, content management systems and business automation tools.

  9. Jooble

    2022 — 2023

    Joined after we won a university hackathon. Wrote unit tests, built job listing features and tuned the candidate matching algorithms.

Stack

Tools I build with

One engineer across the product — from .NET and Python back ends to React and React Native front ends.

backend

  • Python
  • FastAPI
  • .NET 8
  • ASP.NET Core
  • NestJS
  • Go

frontend

  • TypeScript
  • React
  • Next.js
  • Blazor
  • Tailwind

mobile

  • React Native
  • Expo

data

  • PostgreSQL
  • MongoDB
  • Redis
  • Docker

ai & web3

  • AI agents
  • ElizaOS
  • OpenAI API
  • Solidity

Reviews

What clients say

★★★★★

“Great developer! would definitely recommend and will use his services again in the future when needed.”
Shahar B. · Israel · Upwork · Sept 2025

★★★★★

“I recommend Bohdan, he does the work and is a solid developer. I'm closing the contract because we don't have any need for him at the moment, but I would rehire him.”
Frederic H. · Upwork · Nov 2024

★★★★★

“High quality developer, a very nice guy and a responsible person 🔥 Strongly recommend him and looking forward to working again in the future. Thanks for your work 🤝”
Volodymyr D. · Upwork · Sept 2024

Top Rated Plus · 100% Job Success · Verified on Upwork, as of Sept 2026.

Contact

Have a product that needs building?

I'm based in Kyiv and work remotely with clients worldwide. Tell me what you're building.

Hire me on Upwork

Kyiv ·