01 / Blockchain engineering portfolio

Building the trust layer.

A protocol-minded blockchain developer designing secure smart contracts, reliable on-chain systems and developer-friendly infrastructure where cryptography meets useful products.

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02 / About the builder

Code that survives
the chain.

I work across smart-contract architecture, EVM application development and blockchain infrastructure. My process favors explicit invariants, adversarial thinking, deterministic systems and interfaces that make complex protocols easier to use.

28Contracts shipped

4.8Audit score / 5

19Protocol integrations

7Years building

03 / Protocol toolkit

Precision at
every layer.

A01

Smart Contracts

Solidity systems with explicit invariants, gas-aware design and defensive access control.

A02

EVM Apps

Wallet flows, transaction UX, indexing and resilient integrations across EVM networks.

A03

Protocol Design

Token mechanics, permissions, state transitions and incentive-aware architecture.

A04

Security

Threat modeling, reentrancy analysis, oracle assumptions and failure-mode reviews.

A05

Tooling

Foundry, Hardhat, TypeScript, ethers, viem, testing pipelines and deployment automation.

A06

Infra

RPC strategy, event pipelines and observability for dependable blockchain products.

04 / Selected protocol work

Proof in
production.

01 / Treasury protocol

Northstar Vault

Composable treasury contracts with role-separated controls, batched execution and emergency pause paths. Designed for transparent governance and predictable settlement.

02 / Data layer

BlockLens

Event-indexing infrastructure that turns contract activity into searchable protocol state for dashboards and operational tooling.

03 / Developer tooling

ForgeKit

Testing helpers and deployment scripts that standardize invariant checks, fork tests and deterministic release workflows.

04 / Payments

RoutePay

Multi-network payment routing focused on clear transaction states, recoverable failures and low-friction wallet experiences.

05 / Experience trail

Shipping through
changing chains.

2024 - PRESENT

Lead Blockchain Developer · Meridian Labs

Own protocol architecture, security reviews and engineering standards across a growing on-chain product suite.

2022 - 2024

Smart Contract Engineer · Vector Protocol

Built and maintained production contracts, integration layers and automated test systems for DeFi infrastructure.

2019 - 2022

Full-Stack Engineer · Independent

Moved from web applications into distributed systems, then specialized in EVM development and protocol engineering.

06 / Security mindset

Assume the
edge case.

AUDIT / CHECK 06

Trust nothing.

Every privileged action, external call, oracle dependency and state transition gets a threat-model lens before it gets a production path.

invariant(state) == true

Threat modelingattack surfaces / assumptions

Invariant testingstate / permissions

Fork testingmainnet-like conditions

Release reviewdiff / deployment / rollback

07 / Contact

Let's build
the next block.

For protocol work, smart-contract engineering, security-minded architecture or blockchain product collaboration, send a note below.

✉ arjun.chain@example.com

☎ +91 22 5550 1478

◈ Mumbai, IN