Blockchain Developer Intern

Blockchain Developer Intern **Company:** ESTROC **Website:** https://estroc.co.in **Job Type:** Internship **Location:** Delhi NCR / Remote **Work Mode:** Remote / Hybrid **Duration:** 3–6 Months **Openings:** Multiple **Stipend:** ₹10,000–₹15,000/month (depending on skills and experience) **Growth:** Potential full-time conversion based on performance and business requirements. About ESTROC ESTROC is a technology company developing solutions across **Blockchain, Artificial Intelligence, Software Development, SaaS, Automation, and Emerging Technologies**. We are expanding our blockchain development capabilities and looking for interns with **existing foundational knowledge and hands-on experience in blockchain technology**. This role is for candidates who understand how blockchain systems work and have experimented with smart contracts, decentralized applications, or blockchain networks. Key Responsibilities * Develop, test, and deploy **Solidity smart contracts** on Ethereum or EVM-compatible networks. * Build and integrate **decentralized applications (dApps)** using Web3 libraries. * Work with blockchain transactions, wallets, gas, events, and contract interactions. * Research and implement blockchain consensus mechanisms, cryptographic hashing, and distributed ledger concepts. * Explore **Hyperledger Fabric**, permissioned blockchain networks, and enterprise blockchain architecture. * Develop blockchain-based solutions for digital identity, document verification, supply chain traceability, and data provenance. * Integrate blockchain networks with backend APIs, databases, and web applications. * Write smart contract tests and identify common security vulnerabilities. * Participate in blockchain architecture discussions, technical research, and proof-of-concept development. Required Blockchain Knowledge Candidates should already understand the fundamentals of blockchain technology. **1. Blockchain Fundamentals** * Blocks, transactions, nodes, and distributed ledgers * Public vs private vs permissioned blockchains * Consensus mechanisms such as PoW, PoS, and PBFT * Cryptographic hashing, public/private keys, and digital signatures * Transaction validation, gas fees, and network confirmations **2. Smart Contracts & Development** * Basic Solidity programming * Smart contract deployment and interaction * Ethereum Virtual Machine (EVM) * Remix IDE, Hardhat, or Foundry * ERC-20/ERC-721 token standards **3. Web3 & dApps** * Web3 architecture and wallet integration * MetaMask and transaction signing * ethers.js, viem, or Web3.js * Connecting frontend applications to smart contracts **4. Programming & Development** * JavaScript/TypeScript, Python, Solidity, or Go * Git/GitHub * REST APIs and basic backend integration Candidates do not need expertise in every tool, but **practical blockchain knowledge and the ability to work on blockchain concepts are essential**. Preferred Skills * Experience with **Hyperledger Fabric**, chaincode, channels, and permissioned networks. * Knowledge of smart contract security, including reentrancy and access-control vulnerabilities. * Experience with blockchain testnets and local development environments. * Familiarity with IPFS, decentralized storage, oracles, and off-chain integrations. * Understanding of blockchain use cases beyond cryptocurrency trading. * GitHub projects, hackathon participation, or deployed smart contracts. Who Should Apply? We are looking for candidates who: * Have already studied or worked with blockchain technology. * Have built at least one blockchain-related project, smart contract, or proof of concept. * Can explain their blockchain architecture and technical decisions. * Understand where blockchain is useful and where traditional databases may be more appropriate. * Are interested in enterprise blockchain, Web3, and real-world applications. * Can work independently and take ownership of development tasks. **Students, freshers, and self-taught blockchain developers are welcome.** What You'll Gain * Hands-on experience with blockchain development and real-world applications. * Exposure to smart contract development, decentralized systems, and enterprise blockchain. * Opportunities to work on technical proofs of concept and product integrations. * Collaboration with ESTROC's software and AI development teams. * Internship certificate upon successful completion. * Potential long-term opportunities based on performance. How to Apply Apply through Indeed with your resume and share any relevant **GitHub repositories, deployed smart contracts, dApps, Hyperledger projects, or blockchain research work**. Shortlisted candidates may undergo a technical discussion and practical blockchain development assignment. **ESTROC — We Build What Comes Next.** follow us for updates(mandatory) Website: https://estroc.co.in Instagram: https://www.instagram.com/estroctech/ LinkedIn: https://www.linkedin.com/company/estroctech/posts/ Pay: ₹10,000.00 - ₹15,000.00 per month Benefits: * Flexible schedule Application Question(s): * Which blockchain platforms have you worked with? * Have you developed and deployed a smart contract or blockchain application? * Explain the difference between a public blockchain and a permissioned blockchain. When would you choose each? * What happens when a user sends a transaction to a smart contract? Explain the process from wallet signing to transaction confirmation. * Which blockchain development tools have you used? Work Location: Hybrid remote in New Delhi, Delhi 110088