Full-Stack Blockchain Developer (AI-Native)

InfraSingularity; Delhi; On-site; INR 2,000,000 - 4,000,000; Full time

Job summary

InfraSingularity seeks a versatile Full-Stack Blockchain Engineer to develop scalable Web3 applications using React, Next.js, and NestJS with TypeScript. You will also work on Daml logic, smart contracts in Solidity, and DApp UX with secure data modeling.

Qualifications

• 3+ years of engineering experience with React, Next.js, and NestJS (TypeScript).
• Hands-on experience writing Daml templates, choices, and triggers; understanding of the Daml Ledger model.
• Proficiency with ethers.js, wagmi, RainbowKit; familiarity with Solidity and Daml TypeScript/JS libraries.

Responsibilities

• Architect and build scalable full-stack Web3 apps using React, Next.js, NestJS and TypeScript.
• Model multi-party agreements and distributed workflows with Daml, ensuring privacy and proper authorization.
• Develop and deploy secure Solidity contracts integrated with Daml-ledger environments.
• Build backend services interfacing with the Daml Ledger API (gRPC/JSON) and blockchain providers.
• Lead frontend development for decentralized apps with wallet integrations (MetaMask, WalletConnect).
• Implement privacy-preserving data modeling and secure transaction signing across ledgers.

Skills

React

Next.js

NestJS

TypeScript

Daml

Solidity

Ethers.js

wagmi

rainbowkit

Functional programming

Tools

Daml templates

Daml SDK

gRPC/JSON API

Ethereum tooling

Job description

Role Overview:

You will be a versatile Full-Stack Blockchain Engineer at InfraSingularity, a pioneering investor and builder in the Web3 ecosystem. Your main responsibility will be to develop scalable full-stack Web3 applications using React, Next.js, and NestJS with TypeScript. Additionally, you will be involved in Daml logic design, smart contract engineering, API & integration, DApp experience, and ensuring security first practices in data modeling and transactions.

Key Responsibilities:

• Architect and build scalable full-stack Web3 applications using React, Next.js, and NestJS with TypeScript.
• Model complex multi-party agreements and distributed workflows using Daml, ensuring fine-grained authorization and data privacy.
• Develop and deploy secure contracts in Solidity while integrating them with Daml-driven ledger environments.
• Build backend services with NestJS that interface with the Daml Ledger API (via gRPC or JSON API) and standard blockchain providers.
• Lead frontend development for decentralized applications, ensuring smooth wallet integrations (MetaMask, WalletConnect) and intuitive UX for complex financial interactions.
• Implement best practices for privacy-preserving data modeling and secure transaction signing across both public and private ledgers.

Qualifications Required:

• 3+ years of engineering experience with React, Next.js, and NestJS (TypeScript).
• Hands-on experience writing Daml templates, choices, and triggers. Deep understanding of the Daml Ledger model (Signatories, Observers, and Parties).
• Proven ability to use ethers.js, wagmi, and rainbowkit alongside Daml TypeScript/JavaScript libraries.
• Strong grasp of functional paradigms (Daml/Haskell/Scala) to write clean, predictable code.
• Familiarity with Solidity (EVM) and an interest in emerging stacks like Rust (Anoma/Sei).
• Ability to drive end-to-end features in a fast-paced, collaborative startup environment.

Note: Omitted any additional details of the company that were not present in the job description.