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Blockchain Backend Engineer – NFT Records & Tokenization
Blockchain Backend Engineer – NFT Records & Tokenization

Blockchain Backend Engineer – NFT Records & Tokenization at QualiTlabs · Remote only · 4 - 7 years · ₹10L - ₹15L / yr · Profitable · Remote only · Posted 2 Feb 2026

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Blockchain Backend Engineer – NFT Records & Tokenization

QualiTlabs HR's profile picture
Posted by QualiTlabs HR
4 - 7 yrs
₹10L - ₹15L / yr
Remote only
Skills
Solidity
NFT Standards
Smart Contracts
Blockchain
RWA
Tokenization
Ethereum
Polygon
InterPlanetary File System (IPFS)
Web3js

Job Summary


We are building a blockchain platform focused on NFT-based records and tokenization of real-world assets (RWA). The frontend is already developed, and we are looking for a skilled Blockchain Backend Engineer to design and implement smart contracts and blockchain services.

This role involves building production-grade, verifiable blockchain systems with a strong focus on NFTs, on-chain verification, and metadata integrity.


Key Responsibilities


Phase 1 – Immediate Scope

  • Design and develop NFT minting and issuance (single & batch)
  • Implement NFTs linked to real-world records (certificates, titles, permits)
  • Enable on-chain public verification (Token ID, Contract Address, Blockchain)
  • Design and manage NFT metadata (on-chain / IPFS) with metadata locking
  • Implement document hash anchoring for tamper-proof verification
  • Develop public verification APIs and QR-based verification flow
  • Work with at least one EVM-compatible blockchain (Polygon / Base / Ethereum L2)


Phase 2 – Nice to Have (Future Scope)

  • Security token issuance with transfer restrictions
  • Whitelisting and compliance-ready token flows
  • Investor onboarding and agreement binding
  • Distribution handling, investor data room, and referral tracking


Required Skills


  • Strong experience in Solidity
  • Hands-on development with ERC-721 and/or ERC-1155
  • Smart contract development, testing, and deployment
  • Experience with EVM blockchains
  • Proficiency in Web3 libraries (ethers.js / web3.js)
  • Knowledge of IPFS and on-chain data anchoring
  • Ability to design secure, scalable, and verifiable blockchain architectures


Good to Have / Bonus Skills


  • Experience with Real-World Asset (RWA) tokenization
  • Exposure to security tokens or compliance-focused Web3 platforms
  • Prior work on enterprise or regulated blockchain solutions
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About QualiTlabs

Founded :
2017
Type :
Services
Size :
100-1000
Stage :
Profitable

About

QualiTlabs is a pure play software testing services company that offers a comprehensive range of outsourced QA solutions to clients across the globe. With a multi-domain focus, the company leverages its deep technology, business, and industry-specific understanding to deliver solutions that align with its client's business context. QualiTlabs solves the problems of new age digital enterprises by providing software testing and Quality Assurance (SQA) services. The company operates in various industries, including healthcare, finance, retail, and e-commerce.
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  • Excellent work ethic and culture


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  • Data services — Help own the Node.js Analytics Service and Quota Service that front ClickHouse and Snowflake. Keep latency low, queries cheap, and authorisation correct.
  • Performance and reliability — Diagnose hot paths, tune queries, add caches where they matter, and remove caches that have become liabilities. Write the SLOs and the alerts that defend them.
  •  Security isolation — Implement OAuth2 / JWT / mTLS where they belong; respect least-privilege; design APIs that fail closed.
  • On-call and incident response — Take part in the rotation. Lead investigations across services when something rooted in your area breaks.
  • LLM-assisted engineering — Use LLM-based coding and agentic tooling to evolve how features are designed, reviewed, and tested.



What Success Looks Like


•    Services you own meet their SLOs, deploy multiple times a day, and rarely wake anyone up.

•    Billing, subscription, overage, and payout flows you ship are accurate to the cent, replayable, and trusted by both providers and consumers.

•    GraphQL subgraphs you maintain stay fast, well-typed, and pleasant to extend.

•    Event pipelines you produce and consume are idempotent, observable, and survive replay and back-pressure.

•    The first generation of agent-native primitives you help build land in production and start carrying real agent traffic.



What You Bring

•    5–8 years of backend engineering experience, with non-trivial work on production services that real customers depended on.

•    Strong TypeScript / Node.js in a production service environment; comfort with async patterns, streams, and back-pressure.

•    Solid API design — REST and GraphQL (ideally federation: Apollo Federation, Mercurius, or similar). Schema design, persisted queries, performance tuning.

•    Production fluency with SQL — MySQL and/or Postgres. Bonus for Redis or ClickHouse.

•    Experience with event-driven systems — Kafka or similar. You understand idempotency, exactly-once myths, and consumer lag.

•    Hands-on AWS (EKS, MSK, Kinesis, DynamoDB, Lambda, DMS) and Kubernetes. Comfortable reading and writing Terraform.

•    Modern engineering practice: observability, feature flags, CI/CD, and safe rollouts.

•    Care for correctness on the money path — you have shipped billing, metering, or payment code before and have the scars to show for it.

•    Bonus: experience with API gateways, rate limiting, quota enforcement, usage metering, agent protocols (MCP, A2A, x402), or LLM-based developer tooling.

•    You write small, reviewable PRs. You add the test before you fix the bug. You would rather ship a smaller thing well than a bigger thing badly.

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Shubham Vishwakarma's profile image

Shubham Vishwakarma

Full Stack Developer - Averlon
I had an amazing experience. It was a delight getting interviewed via Cutshort. The entire end to end process was amazing. I would like to mention Reshika, she was just amazing wrt guiding me through the process. Thank you team.
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