Dheeraj Yadav (dev-dy)

Senior Software Engineer | Rust Smart Contract Engineer | Solana DeFi | Protocol & Backend Systems

I am a senior software engineer with 5+ years of professional experience building correctness-critical backend systems and Rust-based blockchain applications, with a focus on Solana smart contracts, secure state machines, and DeFi-adjacent protocol infrastructure.

My work emphasizes explicit invariants, atomic state transitions, authority validation, and production safety, especially in systems that handle financial state or user funds.

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Core Expertise

• Rust Smart Contract Engineering
• Solana Programs (Anchor, PDAs, SPL Tokens)
• Protocol Engineering & State Machines
• DeFi Infrastructure & Financial Primitives
• Correctness-First & Security-Focused Design
• Backend Systems & Distributed Services

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Technical Skills

Languages

• Rust
• TypeScript
• JavaScript
• SQL

Blockchain & Web3

• Solana
• Anchor Framework
• SPL Tokens
• Program Derived Addresses (PDAs)
• Cross-Program Invocation (CPI)
• Wallet integrations
• On-chain / off-chain coordination

DeFi / Protocol Concepts

• State machines
• Financial primitives
• Authority boundaries
• Invariant enforcement
• Atomic state transitions
• Risk-aware design

Backend & Systems

• Node.js, NestJS
• REST APIs, WebSockets
• PostgreSQL, MongoDB, Redis
• Async Rust (Tokio)
• Concurrency & performance optimization

Security & Reliability

• Secure smart contract design
• Input validation
• Authentication & authorization
• Defensive programming
• Failure handling & idempotency

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Selected Projects

Decentralized Voting System (Protocol-Style Application)

A decentralized application designed around explicit state machines and invariant enforcement, ensuring immutability, auditability, and safe transitions across proposal and voting lifecycles.

Focus Areas:

• State transition safety
• Double-vote prevention
• On-chain / off-chain coordination

Tech: Rust, Solana, Node.js, TypeScript Repo: https://github.com/dev-dy/decentralized-voting

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Solana NFT Smart Contract (Anchor / Rust)

A Solana smart contract built using Rust and Anchor, focused on secure account modeling, PDA-based authority, and safe ownership transitions.

Focus Areas:

• Signer & authority validation
• Secure state layout
• Defensive instruction handling

Tech: Rust, Solana, Anchor, SPL Tokens Repo: https://github.com/dev-dy/solana-nft-marketplace

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Async Task Scheduler (Rust Systems Project)

A high-performance async task scheduler demonstrating systems-level Rust, including retries, backoff strategies, cancellation, and deterministic behavior under concurrency and partial failure.

Relevance:

• Applicable to protocol backends
• On-chain / off-chain coordination
• Reliability under failure

Tech: Rust, Tokio Repo: https://github.com/dev-dy/task-scheduler-in-rust

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Engineering Principles

• Explicit invariants over implicit assumptions
• Atomic state transitions
• Conservative design for financial systems
• Clarity and auditability over clever optimizations
• Production-first mindset

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Open To Roles

I’m interested in opportunities involving:

• Rust Smart Contract Engineer
• Solana DeFi / Protocol Engineer
• Blockchain Infrastructure Engineer
• Correctness & Security-Focused Systems
• State Machines & Financial Primitives

Location: Remote (India)

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Contact

• LinkedIn: https://www.linkedin.com/in/dheeraj-yadav-113a19166
• Portfolio: https://dheeraj-yadav.vercel.app
• Email: dheerajkryadav8@gmail.com