# Senior Software Engineer

**Company:** [Variance](https://hotfix.jobs/companies/variance)
**Location:** San Francisco, CA
**Role:** Fullstack Engineering
**Salary:** $200k – $400k/yr
**Experience:** 4+ years
**Skills:** React, Next.js, TypeScript, MySQL, ClickHouse, JavaScript, System Design
**Posted:** 2025-10-01

> Builds and owns AI-powered systems for fraud and risk detection end-to-end, from backend architecture to UI. Requires 4+ years experience, strong fundamentals in React/Next.js, TypeScript, MySQL, ClickHouse, and ability to lead technical decisions at scale.

## Job Description

## Responsibilities
- Own product features and systems end-to-end, from architecture and implementation to launch and iteration
- Lead technical decisions across the stack, balancing speed, quality, maintainability, and scale
- Build AI-powered interfaces and decision systems that operate in real time with high precision and user trust
- Work directly with the founders on frontier problems in fraud, abuse, and risk
- Scale our product into new industries and workflows through rapid pilots, live demos, and fast feedback loops
- Improve engineering velocity by shaping internal tools, patterns, and standards
- Help define the technical foundation of the company as we grow

## Requirements
- 4+ years of professional software engineering experience or equivalent
- Strong fundamentals and can ramp quickly in our stack: **React/Next.js**, **TypeScript**, **MySQL**, **ClickHouse**
- Care deeply about craftsmanship and have strong opinions about product quality, system design, and code quality
- Thrive in high-ownership environments and want to drive projects end-to-end, from backend architecture to polished UI to production
- Comfortable making pragmatic technical tradeoffs in ambiguous, fast-moving environments
- Experience building reliable systems at scale and debugging issues in production
- Enjoy collaborating closely with product, design, and leadership to turn fuzzy problems into shipped systems
- Raise the bar for the team through technical leadership, mentorship, and high standards

## Compensation & Benefits
- Competitive salary and meaningful equity
- Platinum-level medical, dental, and vision insurance
- Unlimited PTO, sick leave, and parental leave
- Up to $100 in reimbursement for personal health & wellness expenses each month
- 401(k) plan

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**Apply:** https://hotfix.jobs/jobs/ae302d4d-4db9-4ef8-99a6-c904bb372309
**Canonical:** https://hotfix.jobs/jobs/ae302d4d-4db9-4ef8-99a6-c904bb372309