Frontend Engineer (React, Web3)

Frontend Engineer (React, Web3)

Employment type: Full-time/Company: Saifuro

Saifuro checks payments that AI agents try to make by comparing agent requests with human-approved mandates and returning signed answers for verification. They provide escrow on Base and Solana and settle in USDC onchain; docs are public and their users are developers building agents and API teams.

Responsibilities:

- Build the console screens finance teams use daily: agent spending, decisions behind payments, and approval queues.
- Implement a policy editor that turns spending rules into readable, publishable policies with change history.
- Surface onchain USDC payments and escrow on Base and Solana so users can follow a payment from approval to transaction without a block explorer.
- Help design and build a self-serve sandbox (early next year) and budget forecasting (later in 2027), from initial sketches to delivery.
- Collaborate directly with the CTO and cross-functional team to ship product features.

Requirements:

- Experience shipping React and TypeScript in a product people paid for.
- Able to take rough ideas to clear, accessible screens without a designer specifying every pixel.
- Willingness to learn domain-specific tools and fill gaps as the role demands.
- Available to be online from 14:00 to 17:00 UTC for team overlap (a window, not the full working day).

Nice to have:

- Experience building dashboards for payments or fintech.
- Worked with data-heavy tables and charts or maintained a design system.
- Comfortable in Figma.
- Experience with Next.js and TanStack Query.
- Experience with wagmi, viem, ethers, or Solana's web3.js.

Stack:

React, TypeScript, Next.js, TanStack Query, wagmi, viem, ethers, @solana/web3.js, USDC, Base, Solana, Figma

Benefits:

- Salary: $155,000 to $190,000 (US range). Outside the US pay is in USD or USDC and benchmarked to local market tops.
- Equity: 0.12% of Saifuro, vesting.
- Health: 100% of medical, dental and vision premiums for US employees; 75% for dependents. Outside the US: local plan via employer of record or $300/month toward private cover.
- 25 days paid vacation plus public holidays; company closes between Christmas and New Year.
- 14 weeks paid parental leave for any parent.
- Laptop plus $1,000 toward your workspace.
- $1,500/year for learning (conferences included) plus six to eight company-covered events a year.
- Flexible hours; can combine this with another job as long as there is no conflict.

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