{"id":3773014,"url":"https://alion.io/job/blue-senior-backend-engineer","title":"Senior Backend Engineer","company":{"id":23310,"name":"Blue","domain":"blue.ai","url":"https://alion.io/company/blue","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Work at a Startup","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Santa Clara, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":160000,"max":340000,"currency":"USD","period":"year","gross":null,"usd_annual":340000},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AI Agents","optional":false},{"name":"Edge AI","optional":false},{"name":"Least Privilege","optional":false},{"name":"LLM","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Amazon ECS","optional":true},{"name":"Amazon S3","optional":true},{"name":"Anthropic","optional":true},{"name":"AWS","optional":true},{"name":"Firebase","optional":true},{"name":"GCP","optional":true},{"name":"Node JS","optional":true},{"name":"OpenAI","optional":true},{"name":"Twilio","optional":true},{"name":"WebSockets","optional":true}],"status":"live","first_seen_at":"2026-11-04T22:14:16Z","employer_posted_date":"2026-11-04","last_verified_at":"2026-11-07T10:22:11Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"About Blue: Blue is building a new kind of phone, with your chief of staff built in. Blue sees what you do and reads every notification, text, and email for you. Based on everything it’s learned about you, it decides what to do with each one: handle it and leave you an FYI, or draft a reply and wait for your OK. And anything else in your life is one button away from being off your plate.\nIt works from day one. When you switch, Blue reads everything that comes over from your iPhone, so it already knows the people in your life, how you write, and the passwords, cards, and IDs it needs, kept in a secure vault you both share. No onboarding, and no explaining yourself.\nDelegation this deep isn’t possible from an app. It takes owning the operating system and, ultimately, the hardware. Today the Blue OS runs on Google Pixel hardware while our own hardware is in development. We’re Y Combinator-backed, seed-funded, and our first customers already use it as their daily phone.\nThe role\nYou will own the servers behind every Blue phone: the assistant's backend, messaging, the password vault, iPhone migration, and the infrastructure they run on. You will set the bar for how we review, deploy and operate code. Because we are working on an OS, this role is as much about reliability, security and review, as new features.\nWhat you'll own\nReliability: Monitoring and alerting, on-call, incident response and postmortems, and tested backups with regular restore drills\n\nDeploys: Repeatable, staged releases with a fast rollback.\n\nData and security: Least-privilege access to production, secrets management, and the systems that hold customers' passwords and personal data\n\nCapacity and limits: Rate limits, payload and token budgets, query costs, and LLM spend per user, worked out, and smoothly balanced with on device models before they cause an outage\n\nReview and mentoring: Reviewing changes from teammates and AI agents, and helping early-career engineers grow into strong ones\n\nOur stack\nNode.js (Express, WebSockets), PostgreSQL, AWS (RDS, S3, ECS), Google Cloud KMS, Firebase and Twilio. We use LLM APIs from Anthropic, OpenAI and Google, including Realtime voice.\nWhat we're looking for\nYou have carried a pager for a product with real users\nYou have been through a launch or a growth spurt, and you know what breaks first\nStrong PostgreSQL: schema design, migrations without downtime, query tuning, and locking under concurrency\nSecurity instincts: you treat a password vault and production access with the care they need\nYou do the arithmetic early: body sizes, token budgets, timeouts, growth\nYou give real reviews, keep PRs small, and have mentored junior engineers\nYou are comfortable owning infrastructure end to end, from architecture to on-call\nYou work well with ambiguity and can move quickly without sacrificing quality\nYou want to make a Blue Phone your daily phone\nNice to have\nProduction experience with LLM APIs: latency, cost, streaming, and evaluating quality\nExperience with infrastructure as code and observability tools\nOS, Security, or Android development experience\nExperience reviewing AI-generated code, or working with coding agents\nWhy join now\nYou will be the most senior engineer in your domain on a small team, hired to set our standards for running in production\nYour work goes straight to customers who rely on their phone every day\nEven though we use AI tools for most of our development, we have gone through a lot of effort to ensure that our infra is not AI generated slop, and you get to carry that torch\nWe're also planning on hiring for other engineering positions very soon across ML, security, infra and backend at varying levels of seniority. If you are interested in Blue but you don't match the job descriptions we have listed, please get in touch with a brief about what you do and what you would like to work on at Blue. You will be considered for the other positions immediately as they open.","description_format":"text","description_chars":3949,"description_truncated":false,"requirements":{"experience_years_min":6,"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":["Marketing Automation","Conversational AI","Customer Support & Help Desk Software"],"lifecycle":[{"event":"open","at":"2026-11-04T22:14:16Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":36,"reasons":["conf:3","velocity","win:early"],"computed_at":"2026-11-07T05:47:08Z"},"pay":{"stated_usd_annual":340000,"is_top_pay":true},"html_url":"https://alion.io/job/blue-senior-backend-engineer","json_url":"https://alion.io/job/blue-senior-backend-engineer.json","meta":{"generated_at":"2026-11-07T13:18:21Z","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":15898,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-08T00:00:00Z"}},"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":23310},"rest":"https://alion.io/mcp/rest/get_company?id=23310"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fblue-senior-backend-engineer"},{"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%2Fblue-senior-backend-engineer"},{"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%2Fblue-senior-backend-engineer"},{"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/blue-senior-backend-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fblue-senior-backend-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3773014}},{"tool":"search_jobs","arguments":{"company":"blue.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3773014},"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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