Kotak Securities

Blockchain Developer Intern

InternshipIn OfficeKolkata, West Bengal3 months30K/mo7 openingsImmediate / Rolling

About this internship

Kotak Securities is hiring a Blockchain Developer Intern in Kolkata — a hands-on, mentor-led internship built for students and 2026 freshers who want real exposure to blockchain and smart-contract engineering rather than a certificate-only programme. About the role As a Blockchain Developer Intern…

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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)
Graduating batch 2026 or 2027 — final-year students and recent graduates welcome
60% / 6.0 CGPA and above preferred; strong project work is considered alongside academics
Working knowledge of Solidity, Smart Contracts, Ethereum (or a genuine willingness to learn them)
Exposure to Web3.js / Ethers.js, Cryptographic Protocols, Hardhat / Foundry is an advantage
Clear written and verbal communication in English, and care with detail in your work
No prior work experience required — this is a fresher-friendly internship
Based in Kolkata, West Bengal or willing to work from there for the internship period

Perks & benefits

Exposure to professional tools and workflowsPre-Placement Offer (PPO) opportunityFlexible working hoursNetworking with senior professionalsInternship CertificateStructured onboarding and a formal mentor at a large, established employer

Interview & selection process

3 rounds — typical selection flow for this role:

1Application screening & resume shortlisting by the talent team
2Discussion with the hiring manager on the role and your fit
3HR discussion — stipend, start date, expectations and offer

About Kotak Securities

Kotak Securities operates in the stock broking 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…

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