serginyo90
Senior Software Engineer
Senior full-stack engineer with 10 years of experience: TypeScript, Node.js, React/Next.js, Python, PostgreSQL, AWS. I build distributed backend systems (sync engines, queues, idempotency, retries) and AI/LLM automation. Web3 side projects: an Ethereum gas-price monitor (TypeScript, AWS Lambda, Alchemy RPC, Telegram alerts) and simple smart contracts. I also teach automation on YouTube (n8n, RAG systems, AI agents). Based in Florida, USA. US work authorization. Open to remote roles worldwide and to relocation.
Experience: 10 years
Yearly salary: $100,000
Hourly rate: $0
Nationality: 🇺🇸 United States
Residency: 🇺🇸 United States
Experience
Senior Software Engineer
Mabbly 2024 - 2026
Full-stack development: TypeScript, Node.js, React/Next.js, PostgreSQL, AWS. Built a two-way CRM sync engine (SQS queues, idempotency, retries, conflict resolution) and AI code-review automation used across the team.
Lead Software Engineer / Technical Team Lead
ProHabits 2018 - 2025
Led engineering on an employee-engagement SaaS platform for ~7 years: Node.js, React, AWS serverless (Lambda, SQS, DLQ), PostgreSQL. Built the Microsoft Teams bot integration and mentored a team of developers.
Software Engineer
Megasoft Ltd 2016 - 2018
Backend and frontend development on billing systems: Ruby on Rails, ReactJS, database design.
Skills
ai
aws
backend
ethereum
full-stack
javascript
node
postgres
python
react
typescript
web3js
english
russian
ukrainian