Solidity Smart Contract Developer

Role Summary

Job Title: Solidity Smart Contract Developer

Job Location: San Francisco, CA, USA

Job Location Type: Remote

Job Contract Type: Full-time

Job Seniority Level: Mid-Senior level

About NodeMeta

NodeMetais a Web3 ecosystem built on BNB Smart Chain, founded in August 2025 by SohelMazumder. We're not building another copy-paste DeFi fork — we're creating realproducts that connect blockchain utility to everyday use cases.

Ournative token NTE (Node Meta Energy) is live on BNB Smart Chain with a cappedsupply of 11 billion tokens and a 10-year halving strategy. The mining andstaking ecosystem is already operational, with users earning daily rewardsthrough our decentralized node-based infrastructure.

Wewere recognized as the BestDecentralized Ecosystem at the 2025 Evergreen Awards — and now we'rebuilding the team to deliver on the next phase.

What We're Building — Product Development Status

NodeMetais developing four interconnected products. Here's what's live, what's inactive development, and where this role fits in:

1. Mining Staking Ecosystem

Status: LIVE ✓

Thefoundation of NodeMeta. Users participate in a decentralized node-based miningsystem and earn daily NTE rewards. The staking smart contracts are deployed onBSC mainnet and operational. This is the revenue-generating backbone of theecosystem — real users, real tokens, real on-chain activity.

Your involvement: Maintain, optimize, and extendexisting staking contracts. Improve gas efficiency and prepare for the nextphase of staking features (NFT-based staking, tiered reward structures).

1. NFT Marketplace

Status: IN ACTIVE DEVELOPMENT — architecturephase

Adecentralized marketplace for NFTs with a differentiator: real-world utility.NFTs on our platform aren't just collectibles — they unlock benefits, access,and rewards within the NodeMeta ecosystem. The marketplace will supportminting, listing, bidding, trading, and on-chain staking of NFTs withper-second reward accrual.

Your involvement: This is the core of your role.You'll design and implement the marketplace smart contracts from scratch —BEP-721/BEP-1155 minting, trading/auction logic, and the NFT staking engine(reward calculation, lock-up periods, safe withdrawal flows). You'll own thecontract architecture.

1. SmartCommerce

Status: IN DEVELOPMENT — design phase

Aplatform where users spend NTE tokens on real digital and physical goods —bridging blockchain and everyday commerce. This is what makes NodeMetadifferent from most Web3 projects: we're building actual utility for the tokenbeyond speculation. SmartCommerce requires on-chain payment contracts,settlement logic, escrow mechanisms, and integration points with off-chainfulfillment systems.

Your involvement: Design the on-chain payment andsettlement contracts. Build the escrow logic that protects both buyers andsellers. Work closely with the backend team to ensure on-chain payments triggerreal-world fulfillment reliably.

1. GreenCommerce

Status: PLANNED

Anexclusive marketplace for environmentally friendly products — eco-consciouselectronics, reusable home products, green building materials, and clean energysolutions. GreenCommerce will share the SmartCommerce contract infrastructurewith additional sustainability-focused features.

Your involvement: Future phase. Contracts you buildfor SmartCommerce will be extended for GreenCommerce, so your architecturaldecisions now directly shape this product.

Responsibilities

• Asour Solidity Smart Contract Developer, your day-to-day work spans three productareas:
• NFT MarketplaceContracts
• ▸ Designand implement NFT minting contracts (BEP-721 and BEP-1155)
• ▸ Buildtrading logic — listings, bids, auctions, direct sales with escrow
• ▸ Implementthe staking engine — per-second reward accrual, lock-up periods, safewithdrawal with reentrancy protection
• ▸ Designthe reward token distribution mechanism for staked NFTs
• SmartCommerce PaymentContracts
• ▸ Buildon-chain payment acceptance and validation logic
• ▸ Designescrow contracts for buyer/seller protection
• ▸ Handleedge cases — slippage tolerance, partial payments, refund mechanisms
• ▸ Createsettlement logic that bridges on-chain payments to off-chain fulfillment
• Security Quality
• ▸ Writecomprehensive test suites for every contract (unit, integration, fuzz)
• ▸ Optimizegas usage across all contracts
• ▸ Preparecontracts for third-party security audit — clean code, clear documentation,known-risk inventory
• ▸ Coordinatewith auditors on findings and remediate issues before mainnet deployment

Requirements

• ▸ 2+years writing production Solidity with deployed, verified contracts (share yourBscScan or Etherscan links — this matters more than your resume)
• ▸ Strongunderstanding of smart contract vulnerabilities — reentrancy, integer overflow,oracle manipulation, front-running, access control issues
• ▸ Hands-onexperience with Hardhat or Foundry
• ▸ Familiaritywith OpenZeppelin contracts and EVM token standards (ERC-20, ERC-721, ERC-1155)
• ▸ Abilityto reason about tradeoffs between gas optimization, security, and codereadability
• ▸ Clearwritten communication in English for async collaboration

Nice to Have

• ▸ Priorwork on staking protocols, reward distribution systems, or NFT marketplaces
• ▸ Experiencepreparing for or completing a third-party audit (CertiK, PeckShield, Trail ofBits, OpenZeppelin)
• ▸ Familiaritywith IPFS or Arweave for decentralized metadata storage
• ▸ Full-stackblockchain developers with strong Solidity depth are welcome
• ▸ Experiencewith formal verification or advanced fuzz testing (Echidna, Foundry fuzzing)

Benefits

• ▸ $138,000 – $181,700 USD/year — competitiveand negotiable based on experience
• ▸ Fully remote — work from anywhere in the world
• ▸ Real architecturalownership — you'renot filling a seat, you're building the contract layer
• ▸ Ground-floor timing — proven foundation(live staking) + greenfield products (marketplace, SmartCommerce)
• ▸ Security-firstculture — webudget for audits and take them seriously
• ▸ Small, focused team — your voice mattersin every architectural decision
• ▸ Sustainabilitycommitment — carbonneutrality pledge by 2030, investing in renewable energy projects
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