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Bernard – React, JavaScript, Typescript, experts in Lemon.io

Bernard

From Slovakia (UTC+2)

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Front-end Web DeveloperSenior
Full-stack Web DeveloperSenior
9 years of commercial experience
Agritech
AI
Business intelligence
Communications
Cryptocurrency
Data analytics
Fintech
Marketing
Media
Sales
Chatbots
CRM
Lemon.io stats
3
projects done
2727
hours worked
2
offers now 🔥

Bernard – React, JavaScript, Typescript

Bernard is a seasoned Senior Full-stack Developer with a diverse skill set and extensive experience developing web applications of varying complexities. He is a confident team player and creates engaging educational content for developers. Additionally, Bernard has independently built two projects from inception to completion, showcasing his proficiency and dedication in the field.

Main technologies
React
6 years
JavaScript
8 years
Typescript
6 years
Next.js
5 years
Node.js
5 years
Additional skills
Docker
Shopify
HTML
Gatsby.js
GraphQL
Prisma
Vercel
tRPC
CSS
Tailwind CSS
Firebase
AWS
GCP
Cloudflare
Redux
Zustand
Vite
AI
OpenAI API
RAG
Testimonials
#21727402011Senior FE Developer for a life insurance assessment tool; PT to FT
"Bernard’s work was excellent and when we need more tech help we will come to you guys first"
Direct hire
Potentially possible
Ready to get matched with vetted developers fast?
Let’s get started today!

Experience Highlights

Founder & Creator
May 2023 - Ongoing2 years
Project Overview

A curated platform offering powerful AI tools and expertly crafted ChatGPT prompts to help you work faster, think clearer, and create better.

Responsibilities:
  • Built the entire platform from scratch using TypeScript, Next.js, Vercel, and Sanity CMS;
  • Built a custom Sanity CMS tailored specifically for AI integration;
  • Created an AI automation workflow to generate SEO-optimized content that ranks on Google;
  • Grew the platform organically to 100,000+ monthly visitors, with consistent upward growth.
Project Tech stack:
React
Typescript
Next.js
OpenAI API
AI
Sanity
Vercel
PostgreSQL
Senior Front-end Developer
Aug 2024 - Apr 20257 months
Project Overview

An internal CRM platform built for the sales team to manage customer data, track pipelines, and streamline communication. The tool aimed to centralize workflows and increase efficiency in lead handling and deal tracking.

Responsibilities:
  • Overhauled the entire UI using modern design principles;
  • Added end-to-end testing with Cypress;
  • Resolved critical UI/UX bugs, improving performance and reliability;
  • Refactored outdated components and simplified the ViteJS-based architecture.
Project Tech stack:
React
Vite
Typescript
Cypress
Senior Front-end Developer
Mar 2024 - Jun 20242 months
Project Overview

A platform designed to streamline and manage all aspects of the Initiative Tierwohl program. It facilitates real-time monitoring and management of compliance with animal welfare standards, coordinates farm inspections and certifications, and handles financial transactions related to farmer compensation. It also includes features for data analysis and reporting, providing insights into animal welfare improvements and operational efficiencies.

Responsibilities:
  • Implemented critical reporting feature;
  • Debugged and resolved the application's ongoing issues;
  • Extended front-end components library with new UI blocks;
  • Integrated unit testing framework.
Project Tech stack:
React
Typescript
React Query
Zustand
React Hook Form
Senior Full-Stack Developer
Aug 2022 - Aug 20231 year
Project Overview

This is a BI tool that uses metrics to power reports, insights, and actions that drive change. Keep teams accountable for achieving business results.

Responsibilities:
  • Created front-end and back-end architecture;
  • Overhauled the design of the entire application (based on custom Figma designs);
  • Built the reusable front-end UI components;
  • Added features that allowed the product to go from Alpha to Public Beta.
Project Tech stack:
React
Next.js
tRPC
Prisma
Firebase
JavaScript
HTML
CSS
Tailwind CSS
Vercel
Node.js
Creator, Full-Stack Developer
May 2021 - Sep 20221 year 3 months
Project Overview

This is a blog about React and its applications. The blog is visited by 50 thousand developers each month.

Responsibilities:
  • Created overall architecture of the site;
  • Achieved $0 costs to run the site;
  • Hit the goal of 50,000 monthly visitors all through SEO.
Project Tech stack:
React
Typescript
Gatsby.js
GraphQL
GCP
Creator, Full-Stack Developer
Dec 2021 - Sep 20228 months
Project Overview

This solution provides you with search insights directly from your customers. By using it, you can see what your audience wants to know about a specific topic.

Responsibilities:
  • Came up with the idea;
  • Implemented the entire stack of the application;
  • Integrated with Stripe payments to support the subscription model;
  • Reaching $100 MRR within 2 months.
Project Tech stack:
React
Typescript
Next.js
Vercel
Front-End Developer
Dec 2017 - Dec 20214 years
Project Overview

This is a mining management tool. The platform allows cryptocurrency farm owners to manage and monitor their farms.

Responsibilities:
  • Built front-end and architecture;
  • Built front-end components library;
  • Debugged and resolved the application issues;
  • Wrote e2e tests.
Project Tech stack:
React
JavaScript
Vercel
Front-End Developer
Apr 2017 - Nov 20177 months
Project Overview

This solution allows users to trade forex, cryptos, and stocks with up to 1:500 leverage - serving thousands of active daily traders.

Responsibilities:
  • Designed and implemented new front-end components and modules;
  • Debugged and resolved the application issues.
Project Tech stack:
React
JavaScript

Education

2017
Computer Science
Bachelor

Languages

English
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