{"id":2473043,"url":"https://alion.io/job/lifelancer-solidity-smart-contract-developer","title":"Solidity Smart Contract Developer","company":{"id":3853997,"name":"Lifelancer","domain":"lifelancer.com","url":"https://alion.io/company/lifelancer","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":true,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Web3","role_family":"Web3","seniority":"senior","employment_type":"contractor","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":138000,"max":181700,"currency":"USD","period":"year","gross":null,"usd_annual":181700},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BNB Smart Chain","optional":false},{"name":"DeFi","optional":false},{"name":"Foundry","optional":false},{"name":"Hardhat","optional":false},{"name":"NFT","optional":false},{"name":"OpenZeppelin","optional":false},{"name":"Smart Contracts","optional":false},{"name":"Solidity","optional":false},{"name":"Staking","optional":false},{"name":"Token Standards","optional":false},{"name":"Arweave","optional":true},{"name":"Echidna","optional":true},{"name":"Ethereum","optional":true},{"name":"IPFS","optional":true}],"status":"live","first_seen_at":"2026-10-13T19:30:38Z","employer_posted_date":null,"last_verified_at":"2026-10-13T19:30:38Z","board_verified":false,"closed_at":null,"days_open":0,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":0},"description":"Job Title: Solidity Smart Contract Developer\nJob Location: San Francisco, CA, USA\nJob Location Type: Remote\nJob Contract Type: Full-time\nJob Seniority Level: Mid-Senior level\nAbout NodeMetaNodeMetais 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.\nOurnative 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.\nWewere recognized as the BestDecentralized Ecosystem at the 2025 Evergreen Awards — and now we'rebuilding the team to deliver on the next phase.\nWhat We're Building — Product Development StatusNodeMetais developing four interconnected products. Here's what's live, what's inactive development, and where this role fits in:\n1. Mining Staking EcosystemStatus:LIVE ✓\nThefoundation 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.\nYour involvement: Maintain, optimize, and extendexisting staking contracts. Improve gas efficiency and prepare for the nextphase of staking features (NFT-based staking, tiered reward structures).\n2. NFT MarketplaceStatus:IN ACTIVE DEVELOPMENT — architecturephase\nAdecentralized 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.\nYour 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.\n3. SmartCommerce\nStatus:IN DEVELOPMENT — design phase\nAplatform 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.\nYour 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.\n4. GreenCommerce\nStatus:PLANNED\nAnexclusive 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.\nYour involvement: Future phase. Contracts you buildfor SmartCommerce will be extended for GreenCommerce, so your architecturaldecisions now directly shape this product.\nWhat You'll DoAsour Solidity Smart Contract Developer, your day-to-day work spans three productareas:\nNFT MarketplaceContracts▸Designand implement NFT minting contracts (BEP-721 and BEP-1155)\n▸Buildtrading logic — listings, bids, auctions, direct sales with escrow\n▸Implementthe staking engine — per-second reward accrual, lock-up periods, safewithdrawal with reentrancy protection\n▸Designthe reward token distribution mechanism for staked NFTs\nSmartCommerce PaymentContracts▸Buildon-chain payment acceptance and validation logic\n▸Designescrow contracts for buyer/seller protection\n▸Handleedge cases — slippage tolerance, partial payments, refund mechanisms\n▸Createsettlement logic that bridges on-chain payments to off-chain fulfillment\nSecurity Quality▸Writecomprehensive test suites for every contract (unit, integration, fuzz)\n▸Optimizegas usage across all contracts\n▸Preparecontracts for third-party security audit — clean code, clear documentation,known-risk inventory\n▸Coordinatewith auditors on findings and remediate issues before mainnet deployment\nWhat We're Looking ForRequired▸2+years writing production Solidity with deployed, verified contracts (share yourBscScan or Etherscan links — this matters more than your resume)\n▸Strongunderstanding of smart contract vulnerabilities — reentrancy, integer overflow,oracle manipulation, front-running, access control issues\n▸Hands-onexperience with Hardhat or Foundry\n▸Familiaritywith OpenZeppelin contracts and EVM token standards (ERC-20, ERC-721, ERC-1155)\n▸Abilityto reason about tradeoffs between gas optimization, security, and codereadability\n▸Clearwritten communication in English for async collaboration\nNice to Have▸Priorwork on staking protocols, reward distribution systems, or NFT marketplaces\n▸Experiencepreparing for or completing a third-party audit (CertiK, PeckShield, Trail ofBits, OpenZeppelin)\n▸Familiaritywith IPFS or Arweave for decentralized metadata storage\n▸Full-stackblockchain developers with strong Solidity depth are welcome\n▸Experiencewith formal verification or advanced fuzz testing (Echidna, Foundry fuzzing)\nWhat We Offer▸$138,000 – $181,700 USD/year— competitiveand negotiable based on experience\n▸Fully remote — work from anywhere in the world\n▸Real architecturalownership — you'renot filling a seat, you're building the contract layer\n▸Ground-floor timing —proven foundation(live staking) + greenfield products (marketplace, SmartCommerce)\n▸Security-firstculture — webudget for audits and take them seriously\n▸Small, focused team —your voice mattersin every architectural decision\n▸Sustainabilitycommitment — carbonneutrality pledge by 2030, investing in renewable energy projects\n\nThis job is curated by Lifelancer.Lifelancer is a talent-hiring platform in Life Sciences, Pharma and IT. The platform connects talent with opportunities in pharma, biotech, health sciences, healthtech and IT domains.\nPlease apply via Lifelancer platform to get connected to the application page and to find similar roles.\nOriginally posted on Himalayas","description_format":"text","description_chars":6426,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Smart Contracts & Security","Cryptocurrencies","NFT","Healthcare Staffing"],"lifecycle":[{"event":"open","at":"2026-10-13T20:28:00Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":29,"reasons":["seen:0","win:early","comp:brand"],"computed_at":"2026-10-14T06:34:16Z"},"pay":{"stated_usd_annual":181700,"is_top_pay":false},"html_url":"https://alion.io/job/lifelancer-solidity-smart-contract-developer","json_url":"https://alion.io/job/lifelancer-solidity-smart-contract-developer.json","meta":{"generated_at":"2026-10-14T14:45:29Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":18308,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-15T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3853997},"rest":"https://alion.io/mcp/rest/get_company?id=3853997"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flifelancer-solidity-smart-contract-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Flifelancer-solidity-smart-contract-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Flifelancer-solidity-smart-contract-developer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/lifelancer-solidity-smart-contract-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flifelancer-solidity-smart-contract-developer"}]}