# Full-Stack Engineer

**Company:** [Sift](https://hotfix.jobs/companies/sift)
**Location:** San Francisco, CA, Seattle, WA
**Role:** Fullstack Engineering
**Salary:** $140k – $190k/yr
**Experience:** 3+ years
**Skills:** React, React Query, react router, jest, cypress, Ruby on Rails, Java, Ruby, GCP, Kubernetes, Kafka
**Posted:** 2026-07-20

> Full-stack engineer building and delivering high-impact customer-requested features end-to-end across frontend (React) and backend services. Work closely with Customer Success and Product teams; requires 3+ years React experience plus backend experience in any language.

## Job Description

## What you'll do
- Build and deliver customer-facing features end to end, across both the frontend and the backend. Some features are primarily one or the other; many involve both.
- Work closely with Customer Success and Product to turn customer requests and bug reports into delivered features.
- Work across different areas of our various product and technology areas, including Payments, Account Takeover, Dispute Management, Console, Workflows, and the API.
- Contribute to backend services in our stack (Ruby on Rails, Java, and others), building your familiarity with it over time.
- Help maintain our tooling and engineering practices so the team can continue to deliver reliably.

## Opportunities
- Gain exposure across a broad range of Sift’s products.
- Professional growth through Growth Cycles and deepening backend skills alongside frontend experience.
- Knowledge sharing via regular Tech Talks on handling data at very large scale.
- Put your own ideas into practice at our bi-annual Hackathon.

## What would make you a strong fit
- 3+ years building React applications (React, React Query, React Router), along with familiarity with common testing tools such as Jest and Cypress.
- At least one year of backend experience in any language. Specific experience with Ruby on Rails or Java is not required, but a willingness to work with them is.
- A focus on customers and on delivering results, not only on writing code.
- Comfort moving between different products and codebases.
- Strong communication skills and a collaborative, team-first approach.
- A degree in Computer Science, or equivalent experience.

This role is open to both junior and mid-level engineers. Strong React experience is the primary requirement.

## Tech Stack
**Backend:** Ruby, Ruby on Rails, Java, Dropwizard, GCP, Kubernetes, Kafka, BigTable, Spanner Graph DB, Postgres, Redis, gRPC, Python, Apache Airflow, Snowflake, BigQuery

**Frontend:** ReactJS, React, React Query, React Router, Cypress, Jest, Storybook, SCSS

Prior experience with our specific backend stack is not required; backend experience in any language is sufficient. Hands-on experience with React is expected.

## Benefits
- Competitive total compensation package
- 401k plan
- Medical, dental, and vision coverage
- Flexible lifestyle wallet
- Learning & development wallet
- Flexible time off

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**Apply:** https://hotfix.jobs/jobs/8fae0a87-d790-4fd7-93a7-16d6c37f11e4
**Canonical:** https://hotfix.jobs/jobs/8fae0a87-d790-4fd7-93a7-16d6c37f11e4