{"id":2430803,"url":"https://alion.io/job/flow-senior-software-engineer-flow-protocol-execution","title":"Senior Software Engineer, Flow Protocol, Execution","company":{"id":5751,"name":"Flow","domain":"flow.com","url":"https://alion.io/company/flow-blockchain","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Kula","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Vancouver, Canada"],"countries":["CA"],"hiring_countries":["CA"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":87000,"max_usd":152000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":80},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Go","optional":false},{"name":"Smart Contracts","optional":false}],"status":"live","first_seen_at":"2026-10-12T09:01:10Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-13T16:44:22Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Flow is a layer one blockchain designed from the ground up as a platform for a new generation of Web3 apps, games, and the digital assets that power them. Flow is home today to millions of users and apps from top tier creators including Dapper Labs (NBA, NFL, Disney) as well as industry leaders such as Mattel (Barbie, Hot Wheels), LiveNation / Ticketmaster, and many more.\nWe're looking for an experienced Senior Software Engineer to help us build the best decentralized computer in the world, and make it ready for mainstream web3 adoption with 1M transactions processed per second and petabytes of non-sharded on-chain state.\nIn this role you will be working on the core components of Flow protocol, contributing to evolving it’s architecture and design to improve performance, scalability and reliability, ensure autonomous operation and interoperability with wider web3 ecosystem. Flow Execution node is the CPU of Flow - it is responsible for execution of a purpose-designed programming language for writing smart contracts - Cadence. It also stores the on-chain state and generates proofs for verifying correctness of the execution.\nAs the ideal candidate you are interested in and passionate about pushing the boundaries in development of high-performance decentralized permissionless systems development, working with a fully remote, global team and on open-source software.\nYou are comfortable with solving ambiguous problems in a rapidly evolving environment and can pivot quickly when necessary. You understand the value of clear, well-tested, documented, easily maintainable and performant code. You understand that working on a high-availability product needs quick problem-solving when things don’t go as planned. You appreciate direct communication.\nWhat we will accomplish together:\nBuild an innovative blockchain as the foundation for an entire ecosystem of consumer applications, starting with games, collectibles, and the apps that interact with them\n\nDefy accepted wisdom on the scalability of blockchain platforms\n\nDesign, develop, and deploy new systems that enhance throughput, latency, availability, and security\n\nMaintain, improve and optimize existing systems\n\nSupport Flow network operations and incidents\n\nEnsure that our work is ethical and values-driven to create a positive impact on the world\n\nAbout you:\nYou are capable of applying your skills across a variety of use cases\n\nWe believe in processes and the power of planning, but you will often have to roll with the punches and prioritize the most impactful tasks on the fly\n\nExperience with distributed systems, scalability, and algorithm engineering experience, preferably in Golang\n\nExperienced in building a path to successful delivery from situations with high technical ambiguity, including writing Software Design proposals and building consensus with key stakeholders\n\nExperience with building scalable solutions in a resource-constrained environment, performance optimization and profiling\n\nAbility to maintain and operate high-availability service\n\nExperience with web3 ecosystem and smart contract development\n\nEnjoys and understands the nuances of working with a developer community in public\n\nKnowledge of byzantine-fault-tolerant system design","description_format":"text","description_chars":3243,"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":"Canada","iso":"CA","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Blockchain & Crypto","Gift Cards & Loyalty Programs","Cryptocurrencies","DeFi"],"lifecycle":[{"event":"open","at":"2026-10-13T09:01:10Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":1,"expected_fill_days":7,"reasons":["conf:1","win:early"],"computed_at":"2026-10-13T18:12:31Z"},"pay":null,"html_url":"https://alion.io/job/flow-senior-software-engineer-flow-protocol-execution","json_url":"https://alion.io/job/flow-senior-software-engineer-flow-protocol-execution.json","meta":{"generated_at":"2026-10-13T18:12:31Z","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":27761,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"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":5751},"rest":"https://alion.io/mcp/rest/get_company?id=5751"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fflow-senior-software-engineer-flow-protocol-execution"},{"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%2Fflow-senior-software-engineer-flow-protocol-execution"},{"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%2Fflow-senior-software-engineer-flow-protocol-execution"},{"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/flow-senior-software-engineer-flow-protocol-execution\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fflow-senior-software-engineer-flow-protocol-execution"}]}