Staff iOS Engineer, App Platform

Whatnot • Commerce • Marketplaces • 1 day ago

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Salary

$170k – $290k per year

Location

Remote (United States)

Seniority

Staff

Visa

H-1B filings in 12 months: 48 · for this role: 31 · green card filings: 8

Employment

Full-Time

Confirmed on the employer's own hiring board on Oct 10, 2026. First seen by Alion on Jun 30, 2026. Whatnot scores C on the Alion truth index.

Overview

Company

Impact

Profile match

Whatnot

Whatnot is a US live shopping marketplace headquartered in San Francisco where sellers host livestreams to sell trading cards, collectibles, fashion, electronics, live plants and many other categories. Founded in 2019 and backed by investors including Andreessen Horowitz, Y Combinator and CapitalG, it operates in North America, Europe, Australia and Japan with teams in New York, Los Angeles, London, Dublin, Berlin, Krakow, Sydney and Tokyo. It hires software and application security engineers, product designers, sales managers for international markets, recruiters, communications managers and finance and tax staff.

whatnot.com • HQ: San Francisco, United States • Marketplaces • Commerce • Social Commerce • 1001-5000 employees • Est. 2019

Tech stack of Whatnot

Backed by Y Combinator, Andreessen Horowitz, Silicon Valley Investclub

Join Whatnot, the largest live shopping platform in North America and Europe. As a Staff iOS Engineer, you will be part of the App Platform team, responsible for building the core architecture and shared components of the app. You will work closely with product teams, improve app stability and performance, and ensure that our infrastructure allows for fast and safe feature shipping. This is a remote position with the option to work from one of our global office hubs.

Missions

Design and maintain the app's core architecture and shared components, including modularization, dependency management, navigation, and the patterns product teams build on.
Build and harden the networking, real-time and persistence layers behind live video, chat, and bidding, ensuring stability and performance.
Partner closely with product teams as an internal consultant, shaping scalable designs early, unblocking them on hard technical problems, and providing guidance.

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