Nfinity

Blockchain Integration Engineer – E-commerce & POS Innovation

United States full-time Mid $15,000 - $15,000
full-time Mid level Technology & IT Salary listed Curated
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About the role

Revolutionizing the Future of Live Event Commerce
We’re an innovative event technology company seeking a Web3 Integration Specialist to bridge blockchain technology with mainstream e-commerce platforms. This role involves developing a next-generation POS system that seamlessly connects NFT ticketing and physical merchandise sales – an industry-first solution.
💡 The outcome? A frictionless customer experience that changes how fans engage with live events.
🔹 What You’ll Build
✅ A custom POS system bridging Web3 technology with traditional retail
✅ Real-time inventory tracking for both digital & physical assets
✅ Secure payment processing for crypto and fiat transactions
✅ A system to prevent fraud & protect digital and physical transactions
🔹 Key Responsibilities
🔸 Architect and develop a custom Shopify-integrated POS system
🔸 Enable real-time sync between NFT-based digital assets & physical SKUs
🔸 Build secure crypto + fiat payment gateways
🔸 Ensure seamless user experience for digital & physical transactions
🔹 Your Skills & Experience
💻 Must-Have:
✅ Shopify API or major e-commerce platforms (BigCommerce, WooCommerce)
✅ Smart contract development (ERC-721, ERC-1155)
✅ Payment gateway integration (crypto + fiat)
✅ Web3 libraries (ethers.js, web3.py)
✅ POS software/hardware customization
💡 Nice-to-Have:
➕ Experience with anti-fraud & security systems
➕ Loyalty program integration
➕ Inventory management APIs
Salary: $15,000/moOriginally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT API integration Sales Blockchain Integration Engineer Mid level

Likely questions

  1. Tell us about work you have done that is close to the Blockchain Integration Engineer – E-commerce & POS Innovation role.
  2. How would you approach your first 30 days at Nfinity?
  3. Which of API integration, Sales and Blockchain have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with API integration, Sales and Blockchain.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Blockchain Integration Engineer – E-commerce & POS Innovation role because I can bring practical experience in API integration, Sales and Blockchain, learn the team quickly, and contribute to the outcomes Nfinity needs from this hire.

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