# Staff Software Engineer, Growth

**Company:** [Hinge Health](https://hotfix.jobs/companies/hinge-health)
**Location:** San Francisco, CA
**Role:** Fullstack Engineering
**Salary:** $197k – $275k/yr
**Experience:** 7+ years
**Skills:** React, React Native, TypeScript, nestjs, GraphQL, Node.js, AWS, Kubernetes, Docker, Redis, A/B Testing, Machine Learning
**Posted:** 2026-07-16

> Staff full-stack engineer on the Growth team owning the end-to-end member referral platform, including incentive mechanics, personalization via ML models, A/B experimentation, and scaling systems to drive new member acquisition and business outcomes.

## Job Description

## What You’ll Do
- Own the technical direction and roadmap for the member referral platform across the full stack — from frontend experiences to backend services and data pipelines.
- Scale incentive and referral systems to handle growing member volume and complexity without degrading conversion or user experience.
- Integrate ML model outputs (for example, propensity scores, personalized offers, and targeting signals) into referral surfaces to improve effectiveness.
- Design, instrument, and analyze A/B experiments; work with data science to close the feedback loop between model outputs and product outcomes.
- Partner with product, design, and analytics to define what to build and why, balancing short-term wins with long-term platform leverage.
- Raise the engineering bar by driving code quality, system design standards, observability, and technical decision-making on the team.

## What We’re Looking For
- Incentive & growth experience — a track record of designing or evolving systems that measurably shift user behavior through incentives, rewards, or social mechanics.
- Personalization at scale — experience operationalizing ML model pipelines, model serving, A/B testing infrastructure, and feedback loops that connect model performance to product outcomes.
- Full-stack depth — strong skills across technologies such as React, React Native, TypeScript, NestJS, GraphQL, Node.js, relational and non-relational databases, Docker, Kubernetes, AWS, and Redis.
- Staff-level leadership — you’ve set technical direction for a team, influenced cross-functional roadmaps, and made architectural decisions that have held up over time.

## Basic Qualifications
- Bachelor’s degree (or foreign equivalent) in Computer Science, Engineering, or a related technical field.
- 4+ years of professional software engineering experience, including meaningful time working on production systems at scale.
- Hands-on experience building and operating full-stack applications (for example, using React/React Native on the frontend and Node.js/TypeScript or similar on the backend).

## Preferred Qualifications
- Experience designing and scaling incentive, rewards, or referral systems that drive measurable user and business outcomes.
- Experience integrating ML models into production systems (for example, model serving, feature pipelines, experimentation, and feedback loops).
- Depth with modern web and service technologies such as React, React Native, TypeScript, NestJS, GraphQL, Node.js, relational and non-relational databases, Docker, Kubernetes, AWS, and Redis.
- Proven experience setting technical direction for a team, owning architectural decisions, and driving high-quality execution in partnership with product and data science.
- Experience with experimentation platforms, A/B testing frameworks, or ML feature stores.
- Prior work at a consumer growth-focused company (for example, e-commerce, marketplaces, or consumer apps) and/or experience with viral or referral growth mechanics.
- Experience working in healthcare or other regulated-data environments.

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