{"id":2119283,"url":"https://alion.io/job/b12-staff-software-engineer","title":"Staff Software Engineer","company":{"id":1833884,"name":"B12","domain":"b12.io","url":"https://alion.io/company/b12-io","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":75,"open_postings":3,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon EC2","optional":false},{"name":"Amazon Redshift","optional":false},{"name":"Amazon S3","optional":false},{"name":"CI/CD","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"LLM","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"AWS","optional":true},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-02T17:51:19Z","employer_posted_date":"2026-10-02","last_verified_at":"2026-10-22T18:11:18Z","board_verified":true,"closed_at":null,"days_open":20,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":20},"description":"Job Description:\nB12's engineering team views software as a craft, but improving the world as the reason to practice it. Our engineers are responsible for prioritizing, conceptualizing, co-designing, building, testing, and engaging users for any concept we are building out. We’re generalists in encouraging each other to experience the full stack, but we’re also aware of each other’s preferences in the stack. For this role in particular, we’re searching for a tenured full-stack engineer who brings strong backend/infrastructure skills (and an interest in using them) to the product. We mentor and teach where we can, both inside and outside of the company, and as a Staff Software Engineer, you will be responsible not only for your ownership of major projects, but also mentorship of the team members with whom you ship those projects.\nWe value sharing our work with the outside world. Our team has published papers on forming expert flash teams and machine-mediated worker hierarchies. We’ve baked our research into various open source tools in the space of creativity, expertise, and knowledge work.\nWe hope our engineers have more longevity than any one tool we use, but here is a sampling of our current thoughts about technology:\nWe live on Python/Django and TypeScript/React.\nWe store blobs in Amazon’s S3, munch on them in Amazon’s EC2, develop in Docker, and deploy containers to Amazon’s Elastic Beanstalk.\nWe believe PostgreSQL should be the first system you consider when thinking about persisting structured data.\nWe clean and centralize data in Amazon’s Redshift, and are able to answer almost any question in SQL.\nWe leverage AI in our product and our internal tooling, and faced with a landscape in constant flux, try to pick the right model or agent on a task-by-task basis.\nOur new code is almost 100% LLM-generated, and we’ve thought hard about ensuring quality in the face of ever-increasing review loads, what processes humans are still best a t, and how the practice of mentorship must adapt in the face of these new tools.\nWe have near-full test coverage on the backend, and are making progress on our frontend and integration tests.\nWe set up continuous integration and deployment because, while this model comes with its own pains, we’ve disliked being on fixed release schedules on previous projects.\nWe like to move fast and support point-in-time recovery :).\nYou’d be a good fit if\nYou have 10 or more years of experience building products and systems in production.\nYou are an amazing communicator.\nYou feel comfortable managing your time and deciding among competing priorities.\nYou are curious.\nYou have a high ownership mentality.\nYou enjoy learning and teaching.\nYou are comfortable working with backend and frontend technologies, but have a deeper background and interest on the backend/infrastructure side.\nYou care about and want to contribute to our mission of helping people do meaningful work.\nWhat does a staff engineer do here?\nThis is B12’s first Staff Engineer hire on a ~10-person product team that includes a designer, product manager, and CTO. To understand what we’re looking for in someone with this much experience, here are some concrete examples of tasks you’d work on in a month:\nOwn the delivery of a project of the magnitude “we ship one or two of these a quarter,” both individually shipping code and rallying and supporting team members in doing so.\nParticipate in quarterly planning to identify key projects to work on next quarter.\nMentor other engineers who are in the planning, prototyping, or implementation phases of a project.\nRespond to an incident, write up a postmortem, and improve tooling and infrastructure to help us prevent or more quickly respond to the issue and others like it in the future.\nIdentify and optimize some infrastructure that costs too much, is too slow, or isn’t stable enough.\nDiscuss an early design/prototype with a designer or product manager to help shape its direction and explain what will be easy or hard to implement.\nUnblock an operational team member on a data analysis project that answers a hairy question facing our business.\nRun a brainstorm with engineers to identify how we might work more effectively or ship with a higher level of quality.\nDon’t fear:\nWe highly favor talent and interest.\nSome candidates may see this list and feel discouraged because they don’t match all the items. Please apply anyway: there’s a good chance you’re more wonderful than you think you are.\nB12 is a safe place for human beings. We particularly encourage you to apply if you identify as a woman, are a person of color or other underrepresented minority, or are a member of the LGBTQIA community.","description_format":"text","description_chars":4688,"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":["Low-Code & No-Code Platforms","Website Builders"],"lifecycle":[{"event":"open","at":"2026-10-08T23:52:45Z"}],"visa":[],"liveness":{"score":70,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.775,"p_room":0.9,"age_days":19,"expected_fill_days":31,"reasons":["conf:2","win:mid"],"computed_at":"2026-10-22T06:10:10Z"},"pay":null,"html_url":"https://alion.io/job/b12-staff-software-engineer","json_url":"https://alion.io/job/b12-staff-software-engineer.json","meta":{"generated_at":"2026-10-22T20:07:44Z","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":3957,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"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":1833884},"rest":"https://alion.io/mcp/rest/get_company?id=1833884"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fb12-staff-software-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%2Fb12-staff-software-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%2Fb12-staff-software-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/b12-staff-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fb12-staff-software-engineer"}]}