A blockchain engineer builds and secures software that many computers agree on without a central boss. You will start with programming, Git and how networks and cryptography work, because a blockchain is just those pieces combined. Then you learn smart contracts (Solidity), testing and security, which is where most hiring happens today. Last you go deep on protocol design, node infrastructure, auditing and distributed systems. Most employers want a bachelor's degree or equivalent proof of skill, and a public GitHub with tested, secure contracts is your strongest evidence. No license is legally
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Stage 1 of 3 · about 12 weeks
Write working programs, use Git, and understand how hashing, signatures and peer-to-peer networks make a blockchain work.
Programming fundamentals in JavaScript/TypeScript or Go
Every blockchain tool, from test frameworks to nodes, is code. Go runs many nodes (Ethereum's Geth, Hyperledger Fabric) and JavaScript runs most dApp tooling. Solid basics let you read real projects.
Git and GitHub workflow
Blockchain work is open-source heavy and code review is how security bugs get caught. Clean commits and pull requests are expected on day one.
Data structures and discrete math
A blockchain is a linked list of hashed blocks, with Merkle trees inside. Modular arithmetic and probability underpin the cryptography and consensus you will rely on.
Cryptography basics
Security, immutability and ownership come from hash functions (SHA-256, Keccak-256) and digital signatures (ECDSA). If you understand them, wallet and key-theft threats make sense.
Networking and Linux basics
Nodes talk over peer-to-peer networks and run on Linux servers. You will debug ports, firewalls and logs constantly.
Then 2 more stages (about 48 weeks in all) with lessons, drills, projects, 6 interview questions with strong answers and free resources.