Ernest

Ernest Prykhodko
Fullstack Developer · React / Node.js | AI/LLM Integration & RAG Systems
Dnipro, Ukraine · [відкрити контакти](див. вище в блоці «контактна інформація») · [відкрити контакти](див. вище в блоці «контактна інформація») · Telegram: @ernest2332
github.com/Ernest0203 · [відкрити контакти](див. вище в блоці «контактна інформація»)

Fullstack Developer with 5+ years of commercial experience building web applications with React and Node.js.
Contributed to the full product lifecycle — from initial platform launch to scaling from 150 to 650 companies.
Independently owned both frontend and backend, integrated CRM systems, and built complex business
workflows. Currently expanding into AI/LLM engineering: RAG pipelines, ChromaDB, LangChain.

SKILLS
Frontend: JavaScript (ES5/ES6+), React, Redux, Apollo Client, HTML5, CSS3
Backend: Node.js, Express.js, Koa.js, Apollo GraphQL, REST API, WebSockets
Databases: MongoDB (Mongoose), PostgreSQL
Integrations: Zoho CRM, Zoho Billing, Facebook API, third-party APIs
DevOps / Cloud: Docker, AWS (EC2, S3, Lambda, SQS), CI/CD, Git
AI / LLM: RAG pipelines, LangChain, ChromaDB, HuggingFace Embeddings, FastAPI, n8n

EXPERIENCE

Fullstack Developer · Kitrum → Unbench (product) · Jan 2022 – Sep 2025
Talent-matching platform for IT companies and developers. In 2023, Unbench was spun off as a standalone product
from Kitrum. For the final year, sole developer on the project.
– 150 to 650 companies — designed and built the core candidate-company matching system
end-to-endScaled the platform from
– Led full rebranding and migration from Kitrum to Unbench, covering UI overhaul, business logic, and data
migration
– Zoho CRM and Zoho Billing — automated company data sync, invoicing, and lead management
workflowsIntegrated
– Built a dynamic project pool system allowing agencies to submit candidates for closed positions
– Implemented automated lead transfer flows enabling monetization of non-relevant inbound requests
– Owned the full development cycle solo: architecture, backend (Node.js, GraphQL), frontend (React, Apollo
Client), MongoDB
– Optimized database queries and server-side operations, improving platform performance and stability

Fullstack Developer · IZI Group · Oct 2020 – Nov 2021
– Built a microservice for Facebook ad campaign management and bulk messaging with Facebook API
integration
– Developed a platform for a 3D room scanning service: order management, scheduling, and user
dashboards

Fullstack Developer · Uran · Nov 2019 – Feb 2020
– Built a US-market marketplace platform on Koa.js + React: product catalog, filtering, and checkout flows

Fullstack Developer · TrendMD · Jan 2017 – Jul 2018
– Developed an internal CRM application on Meteor.js + React; optimized performance and automated
internal workflows

EDUCATION
National Metallurgical Academy of Ukraine · 2009 – 2014
Faculty of Computer Systems, Power Engineering and Automation · Specialist degree: Automated Process Control
Systems

LANGUAGES
Ukrainian — Native · Russian — Native · English — Intermediate (B1)