Best X BuildsBrowse ↓

Tech Jobs in United States Posted on X (Twitter)

Most of the founding, staff and Bay Area / NYC roles that get posted on X land here. Remote-US and on-site are mixed in; the location line on each card is the source of truth. 64 roles on this page, pulled from the original hiring posts on X.

64 roles · updated 2026-08-21

Filter United States by role:Design10Engineering49Product12

Scientist

AION Biosciences

Scientist in St. Louis. Custom in-house microscopes, ultrasound and magnetic fields. Apply on Ashby.

St. Louis, United States · Aug 21, 2026

research

Applied AI Engineer

Mintlify

Applied AI engineer. Hiring across San Francisco and New York.

San Francisco / New York, USA · Aug 19, 2026

aiengineering

Product Engineer

Mintlify

Product engineer. Hiring across San Francisco and New York.

San Francisco / New York, USA · Aug 19, 2026

engineeringproduct

Forward Deployed Engineer

Mintlify

Forward deployed engineer. Hiring across San Francisco and New York.

San Francisco / New York, USA · Aug 19, 2026

engineering

Designer / Design Engineer

Mintlify

Designers and design engineers. The marketing intern designed the hiring graphic because the design team is full.

San Francisco / New York, USA · Aug 19, 2026

design

Research Engineer, Lab Automation

Periodic Labs

Turn scientists' experiments into hardware setups and instrument workflows. Up to $250k. a16z Build list, Aug 17.

Menlo Park, US · Aug 18, 2026

engineeringresearchaistartup

Lead Software Engineer

Northwood Space

Lead the Cloud team: antenna scheduling, booking, network orchestration. Up to $260k. a16z Build list.

Torrance / Los Angeles, US · Aug 18, 2026

engineeringstartup

Head of Engineering

Inferact

Head of Engineering on the vLLM inference stack. Up to $280k, SF. a16z Build list.

San Francisco, US · Aug 18, 2026

engineeringaistartup

Chief Engineer, Defense

Astro Mechanica

Top technical authority for the military aircraft program. Propulsion, avionics, flight controls. Up to $300k. Secret clearance. a16z Build list.

San Francisco, US · Aug 18, 2026

engineeringstartup

Product Manager

favorited

Own notifications, sharing, and core mobile flows. Up to $168k. a16z Build list.

Santa Monica, US · Aug 18, 2026

productstartup

Product Manager, Consumer

General Medicine

PillPack founders. Own finding, pricing, booking, and follow-up for consumer healthcare. a16z Build list.

San Francisco, US · Aug 18, 2026

productstartup

Product Lead, AI/ML (Evals)

Abridge

Lead how Abridge tests and measures clinical-note AI. Up to $290k. a16z Build list.

San Francisco, US · Aug 18, 2026

productai

Founding Engineer

Munari

a16z Speedrun. Reliability infra so robots work in the real world, not just the lab. On-site SF.

San Francisco, US · Aug 18, 2026

engineeringaifoundingstartup

Lead NVH Engineer

Waymo

Lead noise, vibration, and harshness strategy. Integrate the self-driving system with the vehicle. a16z Build list.

Mountain View, US · Aug 18, 2026

engineering

Tech Lead Manager, Education

OpenAI

Lead senior full-stack engineers building AI-native learning in ChatGPT. a16z Build list.

San Francisco, US · Aug 18, 2026

engineeringai

Full Stack Engineer

Airbase

Rebuild US radio spectrum infrastructure. Up to $225k, NYC. a16z Build list.

New York, US · Aug 18, 2026

engineeringstartup

Structures Engineer

Galadyne

Ex-SpaceX propulsion lead. Design primary and secondary structures for flight vehicles. a16z Build list.

Austin, US · Aug 18, 2026

engineeringstartup

Senior Product Engineer

a16z New Media

Build tools that help founders grow faster. Work with the a16z New Media team in SF.

San Francisco, US · Aug 17, 2026

engineeringproductstartup

Designer

a16z New Media

Designer on a16z New Media. Video, social, and founder-facing surfaces.

San Francisco, US · Aug 17, 2026

designcontent

Member of Technical Staff

OpenEvidence

Elite engineer on special projects with the founders. Sequoia partner Shaun Maguire posting. Medical AI used by most US doctors.

San Francisco / Miami, US · Aug 17, 2026

engineeringaistartup

Founding Product Designer

Inferact

Define how vLLM and Inferact look and feel. Posted on the a16z Build list.

San Francisco, US · Aug 17, 2026

designstartup

Founding Engineer

Tenera

a16z Speedrun-backed. Predict how users react to software before you ship. Own agent infra, backend, and frontend.

San Francisco, US · Aug 17, 2026

engineeringaifoundingstartup

AI Product Engineer

Town

Personal AI assistant after a $55M Series A. Rethink email, calendar, and contacts. Posted by a16z New Media.

San Francisco / New York, US · Aug 17, 2026

engineeringaiproductstartup

Forward Deployed Scientist

Phylo

AI biomedical discovery lab. Work with pharma and biotech. Up to $275k. a16z Build list.

South San Francisco, US · Aug 17, 2026

researchai

Design Leader

Gravity

Invent the design language for human and agentic care. Clinician and patient interfaces. a16z Build list.

New York, US · Aug 17, 2026

designfoundingstartup

Software Engineer

Uplift

Ex-SpaceX/Tesla founders, $7M out of stealth. Hiring software, mechanical, electrical, manufacturing. Posted by a16z New Media.

United States · Aug 17, 2026

engineeringstartup

Staff Product Manager

Headway

Staff PM. Up to $331k. Posted by a16z New Media.

Remote / New York / San Francisco / Seattle, US · Aug 17, 2026

product

Senior Product Designer

Headway

Senior product designer. Up to $225k. Posted by a16z New Media.

New York / San Francisco / Seattle, US · Aug 17, 2026

design

Staff Software Engineer

Headway

Staff SWE on insurance rails so patients can get mental healthcare. Up to $336k. a16z Build list.

Remote / United States · Aug 17, 2026

engineering

Product Engineer

Runta

Safer execution environment for agents. $20M seed. SDK, CLI, APIs, DX. Up to $200k. a16z Build list.

San Francisco, US · Aug 17, 2026

engineeringproductaistartup

Full Stack, Android, Mechanical and Hardware Engineer

Flyby Robotics

Build the aerial intelligence platform in person in LA. Full stack (React/TypeScript/Go/Python), Android (Kotlin/Compose), senior mechanical and senior hardware (PCB/firmware). US citizen or permanent resident.

Los Angeles, CA · Aug 15, 2026

engineeringstartup

Quant, Trading, Engineering and Product roles

Wintermute

Open roles across C++ quant and trading-platform engineering, ML research, options and prediction-market trading, DeFi trading, and product. London, NYC, Singapore and more.

London / NYC / Singapore · Aug 14, 2026

engineeringaiweb3productresearch

FDE, Full Stack and ML Engineer

Alloy Robotics

Just raised $8M at an $80M valuation to build agents over robotics data. Hiring FDE, Full Stack Software Engineer, ML Engineer, plus AE, Chief of Staff and Growth. Usage up 51% MoM.

Remote (US) · Aug 14, 2026

engineeringaistartup

Product Engineer

Overlap AI

Build outcome-based pricing product. High shipping velocity. US work authorization required.

US (Remote/Hybrid) · Aug 11, 2026

engineeringaiproduct

AI Product Manager Intern

Brix AI

AI Product Manager Intern role at an HF0-incubated AI company building proactive AI workforce agents.

Palo Alto / Shanghai / Remote · Aug 10, 2026

aiproduct

Talented Designer

AI-native agency (Bradford Huber)

Looking for a talented designer to join an AI-native agency with early traction.

Remote / US preferred · Aug 10, 2026

designai