{"id":110734,"url":"https://alion.io/job/blockstream-security-architect-2","title":"Security Architect","company":{"id":1221,"name":"Blockstream","domain":"blockstream.com","url":"https://alion.io/company/blockstream","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":89,"open_postings":43,"ghost_share":0.093,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":136,"computed_at":"2026-11-01T06:10:25Z"}},"role":"Security","role_family":"Security","seniority":"staff","employment_type":"full_time","work_mode":"remote","remote_scope":"unspecified","remote_scope_basis":"board_flag_no_place","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":124000,"max_usd":264000,"period":"year","method":"global_role_seniority_cell","sample_n":724},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Bitcoin","optional":false},{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"GCP","optional":false},{"name":"Go","optional":false},{"name":"ISO 27001","optional":false},{"name":"OWASP","optional":false},{"name":"Python","optional":false},{"name":"Rust","optional":false},{"name":"Threat Modeling","optional":false}],"status":"live","first_seen_at":"2026-01-07T19:41:40Z","employer_posted_date":"2026-01-07","last_verified_at":"2026-11-01T19:16:12Z","board_verified":true,"closed_at":null,"days_open":298,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":297},"description":"Blockstream was founded in 2014 by Dr. Adam Back and a group of fellow cryptographers and engineers who are passionate about Bitcoin and its potential to change the world. Today, Blockstream is the leading Bitcoin company, providing cutting-edge infrastructure solutions for enterprises, institutions, and individual Bitcoin users. We develop industry-leading Bitcoin self-custody solutions, Bitcoin-based financial products, second-layer scaling technologies, and enterprise-grade blockchain infrastructure.\nWe’re looking for an experienced Security Architect to design, implement, and oversee secure systems and applications across Blockstream’s enterprise products and infrastructure.\nThe ideal candidate is a full-stack engineer with a strong backend focus, deep understanding of secure application design, and prior experience building or securing platforms in fintech, banking, or blockchain. You’ll partner closely with product, DevOps, and engineering teams to ensure Blockstream’s systems and data are protected from evolving threats - without compromising innovation or performance.\nWhat You’ll Be Doing (Responsibilities):\nDefine and drive security architecture across applications, services, and infrastructure.\n\nPartner with engineering teams to design and implement secure software systems, focusing on backend and data security.\n\nConduct threat modeling, risk assessments, and security reviews for new and existing products.\n\nDevelop and enforce secure coding practices, frameworks, and review processes.\n\nCollaborate with DevOps on cloud and container security, CI/CD hardening, and access controls.\n\nEvaluate and integrate security tools for code scanning, vulnerability management, and incident response.\n\nGuide and mentor engineers on best practices for secure application development.\n\nStay ahead of emerging security trends, compliance standards, and attack vectors - particularly in fintech and blockchain domains.\n\nWhat We Look For in You (Required Qualifications):\n10+ years of experience in software engineering or security architecture roles.\n\nStrong full-stack background with deep backend security expertise (Python, Go, C/C++, Rust, or similar languages).\n\nDemonstrated experience designing and securing systems for enterprise fintech, banking, or blockchain environments.\n\nKnowledge of cryptography, authentication, and key management.\n\nHands-on experience with cloud security (AWS, GCP, or similar).\n\nFamiliarity with threat modeling, secure SDLC, and modern application security frameworks (OWASP, NIST, ISO 27001).\n\nExcellent communication skills - able to clearly articulate risks and solutions to both technical and non-technical stakeholders.\n\nNice To Haves (Preferred Qualifications):\nExperience with Bitcoin, Lightning, or blockchain protocols.\n\nContributions to open-source security tools or projects.\n\nSecurity certifications (CISSP, OSCP, CEH, or equivalent) are a plus but not required.\n\nStay Safe from Job Scams\n All official Blockstream communication will come from an @blockstream.com email address. We will never ask you to share sensitive information or purchase equipment during the hiring process. If in doubt, contact us at . Learn more about avoiding job scams here.","description_format":"text","description_chars":3235,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Cryptocurrencies","Blockchain Infrastructure","Crypto Wallets"],"lifecycle":[{"event":"open","at":"2026-01-07T19:41:40Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 1","filings_12m":1,"filings_prev_12m":1,"green_card_filings_12m":0,"median_offered_wage_usd":152500,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":18,"band":"cold","label":"Long shot","p_open":1,"p_active":0.627,"p_room":0.28,"age_days":297,"expected_fill_days":136,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-11-01T06:10:25Z"},"pay":null,"html_url":"https://alion.io/job/blockstream-security-architect-2","json_url":"https://alion.io/job/blockstream-security-architect-2.json","meta":{"generated_at":"2026-11-01T22:38:47Z","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":34367,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-02T00:00:00Z"}},"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":1221},"rest":"https://alion.io/mcp/rest/get_company?id=1221"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fblockstream-security-architect-2"},{"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%2Fblockstream-security-architect-2"},{"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%2Fblockstream-security-architect-2"},{"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/blockstream-security-architect-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fblockstream-security-architect-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":110734}},{"tool":"search_jobs","arguments":{"company":"blockstream.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":110734},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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