Web3 Platform Engineer for Crypto Payments and Blockchain

Wonnpay FZE; Dubai; On-site; AED 300,000 - 460,000; Full time

Job summary

Wonnpay FZE in Dubai is seeking a senior blockchain engineer to design, develop, and maintain blockchain and Web3 services powering the WonnPay platform. You will work on on- and off-ramp integrations and multi-network support.

You will implement secure APIs, custody wallet integrations (Fireblocks), and robust transaction monitoring, while collaborating with Backend, Frontend, Product, QA, and Compliance teams.

Qualifications

• 5+ years of professional software engineering with blockchain/Web3 focus.
• Hands-on with EVM-compatible networks and blockchain transaction processing.
• Experience with Fireblocks or MPC custody platforms is preferred.
• Experience with Solana/SPL tokens.
• Experience integrating crypto on-ramps/off-ramps.

Responsibilities

• Design, develop, and maintain blockchain/Web3 services for the WonnPay platform.
• Integrate on/off ramp solutions and Virtual IBAN setup as applicable.
• Maintain multi-network integrations (Ethereum, Polygon, Tron/TRC-20, Solana).
• Build and secure crypto deposit/withdrawal flows, wallets, and monitoring.
• Collaborate with Backend, Frontend, Product, QA, Compliance, and Operations teams.

Skills

Blockchain/Web3

Node.js/TypeScript

Solidity

Fireblocks/MPC custody

Stablecoins USDT/USDC

EVM networks

On/off ramp integration

Security/key management

REST APIs/backend

Payments/Fintech

Tools

TRON/TRC-20

AWS/cloud-native

Job description

Wonnpay FZE in Dubai is seeking a senior blockchain engineer to design, develop, and maintain blockchain and Web3 services powering the WonnPay platform. You will work on on- and off-ramp integrations and multi-network support.

You will implement secure APIs, custody wallet integrations (Fireblocks), and robust transaction monitoring, while collaborating with Backend, Frontend, Product, QA, and Compliance teams.