Observe.AI

Blockchain Developer Intern

InternshipIn OfficeKolkata, West Bengal3 months44K/mo2 openingsImmediate / Rolling

About this internship

Observe.AI has an open Blockchain Developer Intern position in Kolkata for motivated freshers and final-year students. You will work on live blockchain and smart-contract engineering projects and finish with something you can genuinely talk about in interviews. About the role As a Blockchain…

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Skills you'll use

SoliditySmart ContractsEthereumWeb3.js / Ethers.jsCryptographic ProtocolsHardhat / FoundryGas OptimisationSmart Contract SecurityJavaScript / TypeScriptToken Standards (ERC-20 / 721)

What you'll do

Work on writing, testing and auditing smart contracts and on-chain integrations alongside the core team
Apply Solidity, Smart Contracts, Ethereum, Web3.js / Ethers.js to live, production-facing problems
Document your work clearly for reviewers and stakeholders
Participate in reviews and act on the feedback you receive
Collaborate across engineering, product, design or business as required
Follow the team's quality, testing and documentation standards

Who can apply

Pursuing or recently completed B.E./B.Tech (CSE/IT), BCA, MCA or B.Sc (Computer Science) — 2026 freshers & final-year students welcome
Working knowledge of Solidity, Smart Contracts, Ethereum (or a genuine willingness to learn them)
Strong fundamentals in your discipline and clear problem-solving ability
Care with detail and the discipline to document your work
Clear written and verbal communication in English
Based in or willing to work from Kolkata, West Bengal

Perks & benefits

Live project experienceExposure to professional tools and workflowsPre-Placement Offer (PPO) opportunityFlexible working hoursNetworking with senior professionals

Interview & selection process

3 rounds — typical selection flow for this role:

1Application screening & resume shortlisting by the talent team
2Team-fit / behavioural interview with the team
3HR discussion — stipend, start date, expectations and offer

About Observe.AI

Observe.AI operates in the technology sector and has an active presence in Kolkata. Interns here are put on real work from the start, because the team's view is that the fastest way to learn a craft is to practise it under people who already do it well — not to watch it from a distance. The work…

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