Fullstack Platform Engineer - Scale Apps & Reliability

Whatnot; Seattle (WA); Hybrid; USD 207,000 - 230,000; Full time

Benefits offered by this job

Health insurance

Remote work options

Home office setup allowance

Cell phone allowance

Internet allowance

Wellness allowance

Childcare allowance

Family planning support

401k with up to 4% match (US)

Dogfooding budget

Job summary

Whatnot is seeking a Fullstack Engineer for the App Platform team to build scalable Web backend services and the infrastructure that powers multiple product teams across iOS, Android, and Web. You will help push complex systems, ensure observability, and improve platform reliability while shipping high-quality features.

As a senior contributor, you will mentor teams, own end-to-end platform initiatives, and collaborate with design, localization, and product squads.

Qualifications

• Bachelor's degree or equivalent work experience.
• Strong React and GraphQL experience.
• Backend with Node.js or Python and PostgreSQL.
• Ability to mentor and build inclusive teams.
• Proven track record delivering features at scale.

Responsibilities

• Build scalable Web backend services and improve persistence.
• Strengthen networking and client testing harnesses.
• Improve app stability, observability, and incident response.
• Collaborate with product teams to ship platform features.

Skills

React

GraphQL

Next.js

Node.js

Python

PostgreSQL

Mentorship

Ownership

Problem solving

Autonomy

Education

Bachelor’s degree in Computer Science or related field

Tools

GraphQL

Next.js

Node.js

PostgreSQL

React

Job description

Whatnot is seeking a Fullstack Engineer for the App Platform team to build scalable Web backend services and the infrastructure that powers multiple product teams across iOS, Android, and Web. You will help push complex systems, ensure observability, and improve platform reliability while shipping high-quality features.

As a senior contributor, you will mentor teams, own end-to-end platform initiatives, and collaborate with design, localization, and product squads.