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OTAKOYI

Denys logo

Denys

Available in 2 weeks

Web3 Backend Engineer @ OTAKOYI

Senior
Seniority
GMT+03:00, Lviv, Ukraine
Location & Timezone
$55 - $60/hr
Average Hourly Rate
English
Languages

Top skills

Node.js
nest.js
TypeScript
Blockchain & Crypto
Integrations

About

Denys is a senior backend engineer with 6+ years in Node.js and NestJS, specialising in Web3 infrastructure. Most recently delivered RWA tokenisation backend for Lumia — microservices, asset onboarding APIs, blockchain integrations and transaction processing. Brings production experience in building scalable, security-sensitive systems for institutional-grade Web3 products.

Top skills

Verified by Pangea.ai due diligence

Top SkillsCurrent UsageSeniority
Node.js
20%6 years
nest.js
20%4 years
TypeScript
20%5 years
Blockchain & Crypto
20%2 years
Integrations
20%4 years

All skills

Roles and tools, to bring ideas to life and create meaningful experiences

Blockchain & Crypto
Web Apps
CRM
E-Commerce
API
Video Streaming

Professional experience

Explore a curated selection of projects highlighting Denys's expertise and experience. Each project aims to showcase challenges, solutions, and the final outcome, along with the tools and technologies used.

Under MNDA
RWA tokenisation and Web3 financial product platform — Web3 Backend Engineer
Designed and developed backend microservices for tokenized real-world asset infrastructure using Node.js, NestJS and TypeScript. Built APIs and business logic for asset onboarding, tokenisation workflows, and full lifecycle management. Integrated blockchain networks, smart contracts, wallet services, and external Web3 protocols. Implemented transaction processing, event indexing, and blockchain data synchronization services. Built scalable microservice architecture supporting institutional and retail investor flows.
Web Apps
Blockchain & Crypto
Integrations
Web3
FinTech
+8
Under MNDA
Innovative 3D & 2D Space (NDA) — Node.js Backend Developer
Web3-adjacent digital city platform where users buy, sell, auction, and manage real assets on-chain. Designed and developed backend services (REST/GraphQL) for user profiles, digital assets, and auctions. Implemented real-time features (WebSockets) for auctions, notifications, and user communication. Conducted database design and optimization (SQL/NoSQL) for storing and managing user assets and transactions. Integrated payment systems for buy/sell operations. Ensured security and scalability of APIs and backend architecture.
Web Apps
Blockchain & Crypto
E-Commerce
Marketplaces
Smart City Solutions
+9
Under MNDA
IP telephony platform — Node.js Technical Consultant
Performed technical audits of Node.js services, APIs, and database structure. Consulted on scalability, data processing, and AI integration. Reviewed backend design for performance and security. Guided infrastructure setup with Docker and Google Cloud.
Integrations
AI & ML Solutions
Telecommunications
AdTech & MarTech
Tech Consulting & Audits
+8

Preferred tools

View the preferred tools and apps used by Denys to assess compatibility and alignment.

Jira
Jira
Confluence
Confluence
Git
Git
Figma
Figma
Slack
Slack
G Suite
G Suite
Gitlab
Gitlab
Github
Github
Google Drive
Google Drive
Loom
Loom
Notion
Notion

Career highlights

Discover Denys’s professional journey, including employment history, certifications, and educational background.

Web3 Backend Engineer
Lumia/OTAKOYI⸺2025 - pressent
Designed and developed backend microservices for tokenized real-world asset infrastructure (Node.js, NestJS and TypeScript). Built APIs and business logic for asset onboarding, tokenisation workflows etc. Integrated blockchain networks, smart contracts, wallet services and external Web3 protocols.
Node.js Backend Developer
Innovative 3D & 2D Space (NDA)⸺2023 - 2025
Web3-adjacent digital city platform — users buy, sell, auction and manage real assets onchain. Designed and developed backend services (REST/GraphQL) for user profiles, digital assets and auctions. Implemented real-time features (WebSockets) for auctions, notifications and user communication. Database design and optimisation (SQL/NoSQL) for storing and managing user assets and transactions. Integrated payment systems for buy/sell operations. Ensured security and scalability of APIs and backend architecture.
Node.js Technical Consultant
Teliqon⸺2021 - 2023
IP telephony platform with automated calling and marketing campaign management. Performed technical audits of Node.js services, APIs and database structure. Consulted on scalability, data processing and AI integration. Reviewed backend design for performance and security. Guided infrastructure setup with Docker and Google Cloud.
Node.js Developer
Sollo⸺2019 - 2021
Developed custom controllers for STRAPI CMS. Integrated Amazon Payment System (Payfort). Built backend and admin for embedded system including video/audio streaming and payment processing.
Node.js Developer
Upwork⸺2019 - 2019
Full system software development responsibility. Automatic payment functionality development. API development for CMS system.

Testimonials

Muhammad

NDA

Verified Testimonial

“Working with Denys felt really great. He was proactive, responsive and always with a lot of ideas. His back-end work was amazing and stable.“

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