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Staff/Principal Software Engineer – AI-Native Fintech

bloc recruitment San Francisco Bay Area
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AI Summary

Architect and build autonomous AI agents for end-to-end bookkeeping workflows in a high-growth fintech startup. Own full-stack development in TypeScript/Next.js, including integrations with financial platforms and core ledger infrastructure. Requires 5+ years of experience with deep fluency in TypeScript, Next.js, and production LLM/AI agent systems.

Key Highlights
Founding engineering team role with $10m seed funding led by Khosla Ventures
High compensation package: up to $350k salary + $50k bonus + 0.5–2% equity
Visa sponsorship available (H1B transfer/TN) for exceptional candidates
Key Responsibilities
Build AI agents that autonomously run end-to-end bookkeeping workflows for SMBs
Own integrations with Ramp, Brex, and Gusto from scoping through production
Architect an accounting ledger from scratch as the core financial data infrastructure
Ship daily in TypeScript/Next.js across the full stack (60% frontend, 40% backend)
Talk directly to test customers and partners to drive product development
Technical Skills Required
TypeScript Next.js LLMs/AI Agents
Benefits & Perks
Salary up to $350k
$50k bonus
0.5–2% equity
Visa sponsorship available
Travel covered for monthly SF on-site visits

Job Description


Staff/Principal Software Engineer x4 – AI-Native Fintech

TypeScript, Next.JS, LLMs

Salary up to $350k +$50k (add to Salary/Equity) + 0.5–2% equity


San Francisco (or remote, US)


Visa sponsorship available (H1B transfer/TN, case by case). SF-based (SOMA) or remote with monthly SF on-site for exceptional candidates — travel covered


AI native start-up not just focused on building a tool for bookkeepers. They’re replacing the job entirely. Part of Founding engineering team, with $10m seed, led by Khosla Ventures.


Small business bookkeeping, manual, expensive, error-prone hasn’t fundamentally changed in decades. This team is synthetically recreating the entire profession with autonomous AI, and they need a Staff or Principal engineer to help architect it from the ground up.


No legacy systems. No ML research theatre. Just real agents doing real financial work for real customers.


– Build AI agents that autonomously run end-to-end bookkeeping workflows for SMBs

– Own integrations with Ramp, Brex, Gusto — scoping through production, no handoffs

– Architect an accounting ledger from scratch — the core financial data infrastructure

– Ship daily in TypeScript/Next.js, full stack (60% frontend, 40% backend)

– Talk directly to test customers and partners you drive the product, not a spec doc


You’ll fit if you’ve got:

→ 5+ years hands-on software engineering

→ Deep TypeScript/Next.js fluency across the full stack

→ Real experience building with LLMs/AI agents in production

→ Comfortable owning ambiguous problems with minimal direction

→ Ready for high-intensity, high-ownership founding-team pace


3 Stage interview process, with an optional paid work trial.


If “replacing an entire profession with autonomous AI” excites you, this is the one.

Reach out for more details.


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