Blockchain / Web3: market

Vacancy

an open job that cleared the quality gate and lists at least two technologies

Observed candidate

a candidate whose stack contains this technology; an aggregate — not a single record leaves the perimeter

Matchable candidate

not counted yet

Window

jobs open at the moment the snapshot was built

Top 5 technologies in Blockchain jobs: blockchain, web3, smart contract, smart contracts, defi. The basic split is by chain. EVM (Ethereum + L2) — Solidity (must-know, dominates), tools: Hardhat (the trendy standard), Foundry (fast, written in Rust), Truffle (legacy). Frontend: ethers.js, web3.js, Viem (modern). Solana — Rust + Anchor framework + web3.js for Solana. Aptos/Sui — Move. Security: OpenZeppelin contracts library (must-use), Slither + Mythril for static analysis, Echidna for fuzzing, Foundry tests. Indexing: The Graph for on-chain data. Storage: IPFS, Arweave. Oracles: Chainlink, Pyth. Wallets: MetaMask, WalletConnect, Coinbase Wallet integration. Knowledge of EIPs (Ethereum Improvement Proposals) — mandatory for Senior.

Solidity — must-know #1: dominates Ethereum + all L2 (Arbitrum, Optimism, Base, Polygon, zkSync) + compatible chains (BNB Chain, Avalanche). 80%+ of DeFi volume runs on Solidity. The largest job market. Rust — for Solana (fast, cheap chain) + Near + Polkadot/Substrate + Cosmos SDK. Senior Rust/Solana — a premium thanks to smaller supply. Move (Aptos, Sui — bytecode-based smart contracts with an improved security model) — a new language, a niche market, but a growing trend 2025–2026. Premium pay for early expertise. Career strategy: Solidity in depth first (a year+), then optionally add Rust/Solana for diversification. Junior starts with Solidity. Senior can specialise in Rust or Move for a premium niche.

Yes, Blockchain is the most remote-friendly IT specialisation: 82% of jobs are full-remote. By nature the Web3 industry is distributed: DAO teams, async work, communication on Discord. Most DeFi protocols and crypto startups are fully remote with teams in the US, Europe, Asia. Relocant hubs for CIS developers: Dubai (VARA regulation, zero taxes), Cyprus (IP-box), Singapore, Lisbon, Bali, Georgia (Tbilisi). Russian crypto companies — more often office due to compliance. Bug-bounty hunters (Immunefi, Code4rena) — fully remote freelance, zero office ties, the ceiling depends only on skill.

Trustless execution: smart contracts run on a distributed network without a trusted server. Immutability: a deployed contract cannot be changed (only proxy patterns). Testing at 95-99% coverage — mandatory. Public mempool: transactions are visible before confirmation — MEV (Maximum Extractable Value) attacks, front-running. Gas costs: every operation costs ETH/SOL, optimisation of storage/computation is critical. Security culture: code review + formal verification + external audits before launch. Backend Senior habits (try/catch + deploy-fix-iterate) don't work. By-design constraints: no HTTP/websockets, no mutable state outside chain. Career switch Backend → Blockchain: 6-12 months to master the security mindset. By pay Blockchain is 20-40% above Backend.

Blockchain is NOT an accessible entry role: you need Backend Middle+ experience + a security mindset. The optimal path: 1) Solid JavaScript/TypeScript + one backend language (Node.js, Python, Go) at Middle level. 2) Master Solidity through Cryptozombies (gamified interactive tutorial), SpeedRunEthereum.com (scaffold-eth challenges), Solidity by Example. 3) Learn Hardhat or Foundry, write and deploy 3-5 contracts on testnet (Sepolia/Goerli). 4) Study OpenZeppelin contracts (security patterns). 5) Pet project: a working DeFi protocol or NFT collection on testnet with a frontend on Next.js + ethers.js + MetaMask. 6) Bug-bounty practice: Code4rena, Immunefi, Sherlock (audit contests). Books/courses: Solidity by Example, SmartContractEngineer.com, Patrick Collins YouTube (a legendary free curriculum).

As of the latest data refresh, the Zorky CRM sample contains 354 active open Blockchain positions. These are postings published in the last 90 days. Geography: the leaders are US, HK, IN. Blockchain is the most niche IT specialisation by volume in our sources: most crypto jobs are global remote and published on specialised platforms (Cryptocurrency Jobs, CryptoJobsList, web3.career, Wellfound Crypto), not on classic job sites. Telegram channels of crypto communities (especially Russian-speaking "Crypto Jobs", "Web3 Russia") — an exclusive source. The real Web3 job volume for Russian-speaking developers is significantly larger than our sample thanks to global remote DAO teams.

A Senior Blockchain owns a security-first mindset + the full DeFi protocol stack. Solidity at mastery level: gas optimisation, assembly (Yul), proxy patterns (UUPS/Transparent), upgradability, EIP standards (ERC20/721/1155/4626 vault). Security: OWASP smart contract Top 10, reentrancy, integer overflows, front-running/MEV protection, oracle manipulation, flash-loan attacks. Tools: Slither, Mythril, Echidna fuzzing, Certora formal verification. Testing: 95-99% coverage in Foundry/Hardhat, property-based tests, invariant testing. DeFi patterns: AMM (Uniswap math), lending (Compound model), staking, governance (Compound Governor). Cross-chain: bridges, message passing (LayerZero, Wormhole, Axelar). L2 knowledge: optimistic rollups vs zk-rollups. Audit experience: either in-house audits or Code4rena/Sherlock participation.