Developers who have written a few simple contracts and want to build real, well-tested smart contracts and the web applications that use them.
Intermediate level
Blockchain and Web3 Engineering
Tokens, Testing and dApps
Write production-style Solidity: storage, inheritance and custom errors, then test with Hardhat, build ERC-20, ERC-721 and staking contracts with OpenZeppelin, learn gas and design patterns, build a dApp front end with ethers.js and deploy and verify to a public test network.
- 41hours of work
- 13parts
- Reviewedcapstone
- Lifetimeaccess
- Solidity
- Hardhat
- OpenZeppelin
- Smart contract testing
- ethers.js
- Gas optimisation
At a glance
The beginner programme in this track or equivalent: wallets, gas, Remix, basic Solidity (state variables, functions, require, events). JavaScript fluency (async and await, modules) and Node.js 18 or newer are needed for tooling and the front end.
Pass the quizzes and labs, then submit a capstone project. The NIBVEDA team reviews it and either accepts it or sends it back with comments you can act on.
What you will be able to do
- 01Write clear Solidity using custom errors, events, modifiers, inheritance and interfaces and understand storage, memory and calldata
- 02Set up Hardhat and write thorough automated tests including reverts, events, time travel and gas reports
- 03Build ERC-20, ERC-721 and a staking contract on audited OpenZeppelin building blocks
- 04Apply pull-payment, factory, access-control and gas-saving patterns
- 05Build and deploy a dApp with ethers.js, verify it on a block explorer and operate it safely
Curriculum 41 hours in 13 parts
Select a kind to highlight its parts.
Stage 1An ERC-20 token, a soulbound certificate NFT and a staking contract6 parts · 16 h
- 1Solidity in depth: data locations, inheritance and design for safetyWorkshop · Follow along and build, with the steps and the traps written out.2 hFree
- 2Hardhat: compile, test, debug and measure gasWorkshop · Follow along and build, with the steps and the traps written out.2 h
- 3Build and thoroughly test a crowdfunding contractWorkshop · Follow along and build, with the steps and the traps written out.3 h
- 4Check yourself: Solidity and testing with HardhatQuiz · Twelve questions, marked at once, with the reason behind each answer.1 h
- 5Token standards and OpenZeppelinWorkshop · Follow along and build, with the steps and the traps written out.3 h
- 6An ERC-20 token, a soulbound certificate NFT and a staking contractLab · Hands-on work. Many labs are checked automatically against what must exist.5 h
Stage 2A complete dApp with tests, deployment and a front end4 parts · 10 h
- 7Design patterns and gas optimisationWorkshop · Follow along and build, with the steps and the traps written out.2 h
- 8Check yourself: tokens, access control, patterns and gasQuiz · Twelve questions, marked at once, with the reason behind each answer.1 h
- 9Building a decentralised application with ethers.jsWorkshop · Follow along and build, with the steps and the traps written out.2 h
- 10A complete dApp with tests, deployment and a front endLab · Hands-on work. Many labs are checked automatically against what must exist.5 h
Stage 3DApps, deployment and operations2 parts · 3 h
- 11Deployment, operations and a mainnet-readiness checklistWorkshop · Follow along and build, with the steps and the traps written out.2 h
- 12Check yourself: dApps, deployment and operationsQuiz · Twelve questions, marked at once, with the reason behind each answer.1 h
FinishCapstone project1 part · 12 h
- 13A production-style smart contract system with audit-ready documentationCapstone · A full project for your portfolio.12 h
What you take away
An internship certificate with your skills on it.
Made for you automatically when you finish the last part, it names the internship programme, the level and the 41 hours, lists what you showed, and carries a number and a QR code. Anyone can check it on the NIBVEDA verification page, and it shows as withdrawn there if it is ever revoked.
- Proof you completed all 41 hours of this internship programme
- An Internship badge for your profile, CV or portfolio
- Not a job, a stipend or an academic degree, and it says so
Keep building.
3 programmes in this track, from beginner to expert. Buy the learning path and save 15%.
Understand how blockchains really work by building one in Python: hashing, digital signatures, blocks, proof of work, wallets and transactions. Then learn Ethereum accounts and gas, deploy simple Solidity contracts with Remix to a test network and learn how to spot scams and risks.
- Blockchain concepts
- Hashing and digital signatures
- Python
Learn how smart contracts are broken and how professionals defend them: vulnerability classes, Foundry fuzzing and invariant testing, DeFi mechanics and oracle attacks, upgradeability and cross-chain risk, static and formal analysis, and the audit process from scoping to a written report.
- Smart contract security
- Foundry fuzzing and invariants
- DeFi protocol analysis
See all 3 programmes in Blockchain and Web3 Engineering Take the placement test
Quick answers.
The policies have the full detail.
Is this a real internship?
It is a virtual internship programme: a structured, self-paced course built around a real project, with checked assessments and a certificate. It is not employment, it does not carry a stipend and it is not an academic or AICTE-approved qualification. What it gives you is verified, project-based evidence of skills.
How does self-paced work?
You start when you like and move at your own speed. Each part unlocks when you finish the one before it. There are no live classes and no deadlines. Your access is shown on each programme page.
How is my work checked?
Quizzes are marked as soon as you submit them. Labs use a tick-list of tasks. Intermediate and Expert programmes finish with a capstone that the NIBVEDA team reviews and either accepts or sends back with comments.
Can I get a refund?
Please read the refund policy before you buy. It explains when a refund is possible.
Ready to start?
Rs. 765.82 including GST. Lifetime access. Read the first lesson free before you decide.