Software Engineer, Platform
Lassie
San Francisco, CA · Posted June 3, 2026
Just laid off? Start here: a plan for the first weeks
More in California job market · Software Engineer jobs in San Francisco, CA (441) · All Software Engineer jobs (2,099) · Healthcare & Hospital Systems · Engineering jobs
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Where San Francisco, CA ranks
Where San Francisco, CA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #1Best cities for security jobs316 openings · of 20
- #1Best cities for technology jobs7,178 openings · of 100
- #1Best cities for financial services pay after cost of living$173k · of 33
- #1Best cities for entry-level jobs that want AI skills35% · of 100
- #1Best cities for entry-level jobs that want AI skills in the West Coast35% · of 54
- #1Cities with the most jobs that do not need a four-year degree in the West Coast902 jobs · of 47
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
- Most requested AI skills in engineering jobs #1 AI tools in daily work (6.1%)
- AI tools named most often in engineering jobs #1 Claude (1.7%)
- Employers with the most engineering jobs #1 Amazon (2,992 roles)
Pay compared with the market
This listing does not state pay. Across 475 open software engineer listings that state pay, the middle half runs $159,500 to $238,500 and the median is $197,500.
Listed pay is what employers advertise, not what people are paid.
How AI is used in this kind of work
Among computer occupations, all other, AI is already used for a large share of the tasks. Measured exposure for computer occupations, all other: 31% (high).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
Skills this job asks for
Say which you have and which you want to build. We use it to match you to jobs like this one.
About the job
Our mission is to help small businesses run themselves. We’re starting with doctors’ offices, building autonomous systems that handle busywork and complete the workflows that keep the office moving every day. Our team is small, flat, and ambitious. We value craft, intellectual rigor, and direct communication.
ABOUT THE ROLE
Platform engineers build the systems that let Lassie’s agents do real work reliably: integrations, orchestration, data infrastructure, observability, and the foundations behind every new workflow we launch.
WHAT YOU'LL DO
- Build the integrations, data models, orchestration, and reliability systems that let Lassie’s agents complete real workflows at scale
- Create internal tools, observability, and infrastructure that help the team launch new workflows faster and with more confidence
- Work closely with product and operations to turn messy real-world processes into dependable systems
SOME THINGS WE'VE BUILT
- Data pipelines processing $1B+ in insurance claims
- Systems that eliminate thousands of hours of paperwork every month
- A sync engine backed by encrypted SQLite in the browser, enabling 100ms experiences http://blog.superhuman.com/superhuman-is-built-for-speed for healthcare payments and patient ledgers
TECHNOLOGY WE USE
We invest heavily in productivity. Engineers should have the best tools for the job and the freedom to choose them.
- Python (Django, Pydantic AI), Postgres, Redis
- TypeScript, React, Tailwind
- Google Cloud Platform, Vercel
- Linear, Slack, Notion
JOINING US
To start, you'll have a handful of conversations with our team and founders. If there is mutual excitement, we'll invite you to the office where you'll work on a small project and meet the team.