janbures
Senior React Engineer
Senior Frontend Engineer specializing in high-performance React applications — from
Web3 DApps with complex on-chain/off-chain data flows to cross-platform IoT
dashboards with real-time data visualization. Co-architected DeFi products (automated
rebalancing engine, wallet integrations, embeddable React widget) with a focus on
reliability, performance, and seamless UX. Comfortable close to the backend — Kotlin
APIs, monitoring and observability (Datadog).
Looking for the next challenge where I can take responsibility and have an impact to the product
Core stack: React, TypeScript, TanStack, Wagmi, Viem. Kotlin.
Web3 DApps with complex on-chain/off-chain data flows to cross-platform IoT
dashboards with real-time data visualization. Co-architected DeFi products (automated
rebalancing engine, wallet integrations, embeddable React widget) with a focus on
reliability, performance, and seamless UX. Comfortable close to the backend — Kotlin
APIs, monitoring and observability (Datadog).
Looking for the next challenge where I can take responsibility and have an impact to the product
Core stack: React, TypeScript, TanStack, Wagmi, Viem. Kotlin.
Experience: 6 years
Yearly salary: $74,000
Hourly rate: $35
Nationality: 🇨🇿 Czech Republic
Residency: 🇨🇿 Czech Republic
Experience
Cross-platform Frontend Developer
Heliotics 2024 - 2026
Built a cross-platform industrial IoT monitoring dashboard for high-frequency data streams (LoRaWAN, Helium) and interactive visualizations. Stack: Expo (React Native), Mapbox, ApexCharts, i18n
Senior Software Engineer
MetaLend 2024 - 2026
• Led frontend architecture of the "Web3 Savings Account" DApp — wallet connections, transaction flows, and real-time on-chain state synchronization — serving 1,400+ users, with over $5M in deposits and $3.8M in withdrawals processed through its automated rebalancing engine. • Developed parts of the rebalancer's backend logic in Kotlin, including API endpoints and internal monitoring (Datadog logs, Slack alerting). • Developed an embeddable widget (NPM package) enabling third parties to integrate core protocol functionality. • Helped design and document public APIs (Swagger) and AI-ready integration guides, improving developer onboarding and ecosystem adoption. • Stack: React, TanStack Query/Router, Wagmi, Viem, Privy, OnchainKit, TailwindCSS, Kotlin
Frontend Engineer
Esports Innovation Group 2023 - 2025
Developed a performance analytics dashboard visualizing custom AI-generated metrics for League of Legends gameplay. Stack: Nuxt.js, UnoCSS, Pinia, Python
Co-Founder
Bloxauce s.r.o. 2022 - 2026
Led development of landing and minting pages with smart contract integration, and built hosting infrastructure for high-traffic NFT launches (H4C, Pixel Sounds). Stack: React, Styled-components, Ethers.js, Redux, AWS (S3, Route53, CloudFront, DynamoDB)
Frontend Developer (Web3)
Dobby Labs 2022 - 2023
Developed minting and landing platforms for Dr. Punks, a women's rights initiative in the Dominican Republic. Stack: React, Styled-components, Material UI, AWS (Amplify, DynamoDB)
Test Automation Engineer
Continental Barum 2021 - 2022
Developed and maintained automated UI test suites in Ranorex for an internal company platform, covering regression and functional testing. Stack: Ranorex, C#
Frontend Developer
Tomas Bata University 2020 - 2022
Co-designed and implemented websites for Tomas Bata University, including TBU Ball (custom reservation system) and Majáles UTB (official Zlín music festival site). Stack: React, Styled-components, TailwindCSS, Laravel
Skills
web3
front-end
english