Senior Software Engineer, Digital Experiences
BillionToOne · Menlo Park, CA
$190,081–$211,201from the description
Jul 2, 2026
Menlo Park, CA
Jul 21, 2026
What this job asks for AI summary
A senior full-stack engineering role focused on building and maintaining web applications that serve clinicians and patients in genomic diagnostics. Day-to-day work involves React/TypeScript on the frontend and Django/Postgres on the backend, with projects spanning patient-facing digital experiences, digitization of clinical workflows, and electronic medical records. The role suits an experienced engineer comfortable owning projects end-to-end in a hybrid, fast-moving environment.
Senior level · 5+ years · San Jose-Sunnyvale-Santa Clara, CA · Full-time
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Roughly 740 people in the San Jose-Sunnyvale-Santa Clara, CA area plausibly meet what this posting asks for (software developers). range 220–1,100
Applicant volume Moderate — A normal amount of company. The rare requirements below are what will separate a shortlisted application from the rest.
Rare in this occupation — lead with these, and say what you built with them.
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $217,796 (middle half $177,469–$231,052). This posting is about at that midpoint.
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (9)
The role is hybrid (onsite 2–3 days/week) at the Menlo Park, CA campus; Menlo Park falls within the San Jose-Sunnyvale-Santa Clara CBSA.
The posted base pay range is $190,081–$211,201/year; the posting also references a total compensation package of $307,321/year inclusive of equity and bonus, which is not captured in the base range fields.
AI-assisted development tools (e.g., Cursor, Claude Code, Codex) are listed as a hard requirement with explicit language about 'hands-on experience' and 'genuine enthusiasm' — treated as required despite the illustrative examples.
Django is listed as required with Flask as an acceptable alternative ('web frameworks such as Django or Flask').
Python, PostgreSQL, AWS, and Salesforce appear only in the 'Technologies we use' stack narrative, not in the Requirements section — treated as preferred context.
npm workspaces is listed in the Requirements section alongside Storybook and Playwright as frontend architecture best practices, but is a narrower tooling detail; retained as preferred given it reads more as stack context within a broader architectural requirement.
LLMs, FHIR, and HL7 are listed under 'Nice-to-haves' and are preferred accordingly.
The alt SOC 15-1254 (Web Developers) was considered given the 'Digital Experiences' framing and heavy frontend emphasis, but the role ships full-stack applications (Django backend, APIs, EMR integrations) rather than web pages/sites — 15-1252 is the better fit.
Ignored 1 non-technology phrase(s) as skills (responsibilities/concepts, not named tools): AI-assisted development tools.
Read the full posting
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