{"id":2545504,"url":"https://alion.io/job/fun-protocol-engineer-singapore","title":"Protocol Engineer (Singapore)","company":{"id":1839272,"name":"Fun","domain":"fun.xyz","url":"https://alion.io/company/fun-xyz","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"Web3","role_family":"Web3","seniority":null,"employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Singapore"],"countries":["SG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":60000,"max_usd":125000,"period":"year","method":null,"sample_n":55},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Core Blockchain","optional":false},{"name":"DeFi","optional":false},{"name":"Move","optional":false},{"name":"Rust","optional":false},{"name":"Smart Contracts","optional":false},{"name":"Solidity","optional":false},{"name":"Ethereum","optional":true},{"name":"Solana","optional":true}],"status":"live","first_seen_at":"2025-09-22T16:32:06Z","employer_posted_date":"2025-09-22","last_verified_at":"2026-10-15T03:25:34Z","board_verified":true,"closed_at":null,"days_open":387,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":387},"description":"At Fun, we’re building the financial infrastructure for internet capital markets.\nThe systems that power global finance were designed for a different era: slower, fragmented, and constrained by borders. Today, value is digital, global, and moves instantly, but the experience of moving it hasn’t caught up.\nFun offers the highest converting payment solution in the digital asset space - a unified system that enables users to complete any on-chain action using crypto, exchange balances, or fiat from a card or bank account, all in a single, seamless flow.\nOur goal is simple: make transacting with any asset feel effortless, anywhere in the world.\nRole Overview\nWe're looking for a Protocol Engineer to join our core blockchain team and help build the foundation of Web3 payments infrastructure. This high-impact role offers the opportunity to work on challenging technical problems at the intersection of smart contracts, cross-chain protocols, and decentralized finance.\nYou will design and implement secure, efficient smart contract systems and blockchain integrations that power millions of transactions across multiple chains. This role is perfect for a technically strong engineer who thrives in fast-paced environments and wants to shape the future of decentralized finance.\nResponsibilities\nDesign, develop, and deploy secure smart contracts and protocol implementations across multiple blockchain platforms\nCollaborate with backend and product teams to architect blockchain solutions that meet business requirements\nWrite highly efficient, well-tested code and participate in security audits to ensure protocol safety\nResearch and evaluate new blockchain technologies, protocols, and DeFi primitives for integration opportunities\nContribute to incident response and debugging on-chain issues to ensure protocol reliability\nRequirements\nStrong experience building and deploying production smart contracts on major blockchain platforms\nDeep understanding of blockchain architecture, consensus mechanisms, and cryptographic principles\nHands-on experience with smart contract development languages (Solidity, Rust, Move, etc.)\nSolid grasp of DeFi protocols, token standards, and cross-chain communication patterns\nStrong security mindset with knowledge of common smart contract vulnerabilities and best practices\nClear communicator who can explain complex blockchain concepts to cross-functional teams\nNice To Have\nProduction experience with multiple blockchain ecosystems (Ethereum, Solana, L2s, etc.)\nPreviously worked at crypto startup or Web3 infrastructure company\nExperience with cross-chain bridges, oracles, or interoperability protocols\nBackground with high-volume DeFi protocols or DEX infrastructure\nContributions to blockchain open source projects or protocol research\nExperience with formal verification or advanced smart contract testing frameworks","description_format":"text","description_chars":2868,"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":"Singapore","iso":"SG","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Blockchain & Crypto","Smart Contracts & Security","DeFi","Financial Software & Embedded Finance"],"lifecycle":[{"event":"open","at":"2026-10-14T16:37:52Z"}],"visa":[],"liveness":{"score":7,"band":"cold","label":"Long shot","p_open":1,"p_active":0.248,"p_room":0.28,"age_days":387,"expected_fill_days":67,"reasons":["conf:0","win:tail","crowd:"],"computed_at":"2026-10-15T03:37:54Z"},"pay":null,"html_url":"https://alion.io/job/fun-protocol-engineer-singapore","json_url":"https://alion.io/job/fun-protocol-engineer-singapore.json","meta":{"generated_at":"2026-10-15T03:37:54Z","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":5053,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":1839272},"rest":"https://alion.io/mcp/rest/get_company?id=1839272"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffun-protocol-engineer-singapore"},{"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%2Ffun-protocol-engineer-singapore"},{"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%2Ffun-protocol-engineer-singapore"},{"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/fun-protocol-engineer-singapore\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffun-protocol-engineer-singapore"}]}