Getting Your Feet Rust-y: A Beginner’s Guide to Rust for Polkadot Devs”
Allan Githaiga

Allan Githaiga @githaiga22

About: Founder Imara | Blockchain Developer | Full-stack Dev at Zone01 Kisumu | 4x winner in Blockchain Hackathons | Proficient in Golang & Rust

Location:
Kenya
Joined:
May 24, 2024

Getting Your Feet Rust-y: A Beginner’s Guide to Rust for Polkadot Devs”

Publish Date: Jun 16
20 1

“Rust is the skill. Polkadot is the playground. And you? You’re the architect.”

🚀 From Curiosity to Code: Why Rust + Polkadot?

For the past few months, I’ve been heads-down writing about Go — breaking down structs, interfaces, and everything in between. It was the language that helped me fall in love with code and gave me a strong foundation in backend development.

But something kept calling me: blockchain.

As I explored the space, I didn’t want to just write smart contracts or build on top of existing blockchains. I wanted to understand the core — the real infrastructure that powers the decentralized world.

That’s when I stumbled into the Polkadot ecosystem — a vision of Web3 that goes beyond just blockchains. It’s about connecting them all, and empowering developers to build their own chains using powerful tools.

And guess what? The whole thing runs on Rust.

Learning Rust isn’t just about syntax — it’s about unlocking the power to shape the Web3 future.

So here I am, making the jump from Go to Rust — not because I dislike Go, but because Rust is where my blockchain journey gets real. It's the language that powers Substrate, Polkadot’s core framework. It’s how you build parachains, runtime logic, smart contracts with ink!, and even validator tooling.

If Web3 is a city, Polkadot is the highway system… and Rust is the language engineers use to build it.”

🧰 Why Polkadot Chose Rust (And Why You Should Too)

Polkadot didn’t randomly pick Rust — it was an engineer’s choice.

Here’s what makes Rust a no-brainer for blockchain:

✅ Memory Safety without garbage collection

✅ Blazing Speed like C/C++, minus the footguns

✅ Pattern Matching & Strong Typing to catch logic errors before they cost millions

✅ Rich Tooling like cargo, clippy, rustfmt

✅ Top-tier Wasm support — essential for running blockchains inside Polkadot
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In blockchain, bugs aren’t just bugs — they’re million-dollar mistakes. Rust helps catch them before they happen.”

🧪 How Rust Powers the Polkadot Ecosystem

1. 🏗 Substrate Framework

Polkadot is built on Substrate, a blockchain-building toolkit 100% powered by Rust. Substrate lets you:

  • Build custom blockchains from scratch

  • Plug in prebuilt runtime modules (called pallets)

  • Launch your own parachains in the Polkadot network

2. ⚙️ SCALE Codec

Rust handles SCALE (Simple Concatenated Aggregate Little-Endian) encoding, which compresses and serializes blockchain data efficiently.
In short: Rust makes your data fly over the wire faster and cheaper.

3. 🌐 WebAssembly (Wasm)

Polkadot compiles its runtime logic into WebAssembly, a portable low-level format. Rust is one of the best-supported languages for Wasm. That means your Rust code becomes:

  • Cross-platform

  • Ultra-performant

  • Deterministic (great for consensus)

👨‍💻 Rust + Polkadot Career Paths

You’re not just learning Rust — you’re opening doors to jobs and grants in one of the most developer-friendly ecosystems in Web3.

💼 In-demand Roles:

  • Runtime engineers (building pallets)

  • Smart contract developers (with ink!)

  • Substrate CLI & tooling developers

  • Auditors, validators, and indexer engineers

💰 Funded Opportunities:

  • Web3 Foundation Grants

  • Substrate Builders Program

  • Rust-based tooling is often directly funded by core teams and DAOs.

In Web3, learning Rust isn’t just smart — it’s strategic.

🧭 Your Learning Path: Rust → Polkadot Dev

polkadot-article-table

Want to feel like a blockchain wizard? Understand lifetimes, and you’ll tame time itself. 🧙‍♂️

🔨 Practice Projects to Get Started

🐱 Substrate Kitties
Build an NFT marketplace (like CryptoKitties, but Rusty)
click here
substrate-kitties

2.🛠 Substrate Node Template
Launch your own chain in minutes

3.✍️ ink! Smart Contracts
Write contracts with familiar Rust syntax
click here

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The best way to learn Rust is to break stuff—safely. Substrate makes it fun.

Rust is a Power Move

Rust isn’t trendy. It’s battle-tested. And in the Polkadot ecosystem, it’s the default. Learning Rust today is how you build scalable, secure, future-proof blockchain apps tomorrow.

So grab your terminal, fire up cargo new, and join a growing tribe of fearless Rustaceans and Polkadot pioneers.

Rust is your skill. Polkadot is your playground. And you? You’re the architect of the next decentralized world.

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  • Admin
    AdminJun 16, 2025

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