Best X Builds

Engineering hiring in San Francisco

53 engineering jobs in San Francisco that were actually posted on X, not copied from a board. Location is whatever the original post said.

53 roles · updated 2026-10-31

Product Engineer

Engineering

Speedrun

Product engineer for the talent tools. Full time contract in San Francisco. Posted by the lead for talent.

San Francisco@justmazer

Engineer

Engineering

Paradev

Engineer, in the office in San Francisco five days a week. Show work you have shipped. Posted by a cofounder.

San Francisco@FlyaKiet

CoreSpeed

Design engineer for the site, dashboard, and docs. $10,000 a month to start. Comment or DM Milton.

Remote or San Francisco@miltonheyan

GTM Engineer

Engineering

PumpGTM

Engineer for GTM and CRM products. Paid work trial, then long term. Office in San Francisco, remote okay.

San Francisco or remote@NamanyayG

Google DeepMind

Research engineer on Gemini large scale pretraining. London or Mountain View. Posted by a research engineer on the team.

London / Mountain View@zacharynado

OpenAI

Developer experience engineer with the cyber team. San Francisco. Posted by the head of developer experience.

San Francisco@romainhuet

Fluxera

Solutions engineer. 35k to 40k plus equity. Same post. DM.

Remote, San Francisco preferred@Shubham_6x

DevRel

Engineering

Photon

Full-time developer relations, on-site in San Francisco. Same post. Posted by the CMO.

San Francisco@0xJuliechen

aion

Senior design engineer on the same hiring post. Posted by the company.

San Francisco / New York / London@aionxyz

Human Archive

Robot learning intern in the San Francisco office. Posted by the founder.

San Francisco, CA@babugi28

OpenAI

Two senior seats on the plugins developer platform. San Francisco, relocation provided. Posted by someone on the team.

San Francisco, CA@mxstbr

OpenAI

Android engineer on the same plugins platform. San Francisco, relocation provided. Posted by someone on the team.

San Francisco, CA@mxstbr

Trigger.dev

Developer relations in San Francisco. Same hiring post. Posted by someone on the team.

San Francisco@jdkanani

Prime Intellect

Agent harnesses, cloud agents, self-improving loops, sandboxes, evals. SF, in person. Posted by someone on the team.

San Francisco, United States@kevinjosethomas

Engineer

Engineering

Aside

Memory, computer use, compaction, agent loop. $160k to $300k plus equity. SF, in person. Posted by the CEO.

San Francisco, United States@hyojun_at

Robocurve

Frontier robotics evals. $170k-$300k, $5k referrals. San Francisco, in person. Posted by the co-founder.

San Francisco, United States@chooi_jeq

Andera

AI agents for audit. $37M Series A. San Francisco, on-site. Posted by a teammate at Hack the North.

San Francisco, United States@natashajchen

Andera

Product engineering lead for AI audit agents. San Francisco, on-site. Posted by a teammate.

San Francisco, United States@natashajchen

Andera

Infrastructure for AI audit agents. San Francisco, on-site. Posted by a teammate.

San Francisco, United States@natashajchen

Lead AI Engineer

Engineering

Andera

Lead AI engineer for audit agents. San Francisco, on-site. Posted by a teammate.

San Francisco, United States@natashajchen

Product Engineer

Engineering

Andera

Product engineer for AI audit agents. San Francisco, on-site. Posted by a teammate.

San Francisco, United States@natashajchen

LearnVector

Design engineer, in-person Mountain View. Andrew Ng's learning product. Posted by the hiring person on the team.

Mountain View, CA@dimapyanov

Sprig

Senior platform engineer. Hybrid SF. Posted by someone on the team.

San Francisco, CA@MicheleRivaCode

Proximal

Build the applied research function and sit with customers. North Beach, SF. Posted by a co-founder.

San Francisco, CA@MatternJustus

Alchemy

Software engineers and several other roles. SF and NYC. Posted by growth at Alchemy. DMs open.

San Francisco / New York, NY@uttam_singhk

Tessl

DevRel for agent skills and context. San Francisco. Posted by the company.

San Francisco, US@tessl_io

Profound

Applied AI for an enterprise marketing harness. SF and NYC, no remote. Posted by the CTO.

San Francisco / New York, NY@dbabbs

Profound

Frontend engineer. SF and NYC, no remote. Same Profound hiring thread.

San Francisco / New York, NY@dbabbs

Data Engineer

Engineering

Profound

Data engineer. SF and NYC, no remote. Same Profound hiring thread.

San Francisco / New York, NY@dbabbs

Engineer

Engineering

Merge

Engineers in SF and NYC. Connective layer for AI in product and workforce. Posted by the cofounder.

San Francisco / New York@GilFeig

Mintlify

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

San Francisco / New York, USA@mintlify

Product Engineer

Engineering

Mintlify

Product engineer. Hiring across San Francisco and New York.

San Francisco / New York, USA@mintlify

Mintlify

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

San Francisco / New York, USA@mintlify

Inferact

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

San Francisco, US@katieschwartz

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@katieschwartz

Munari

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

San Francisco, US@katieschwartz

Waymo

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

Mountain View, US@katieschwartz

OpenAI

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

San Francisco, US@katieschwartz

a16z New Media

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

San Francisco, US@thedanigrant

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@shaunmmaguire

Tenera

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

San Francisco, US@katieschwartz

Town

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

San Francisco / New York, US@thedanigrant

Product Engineer

Engineering

Runta

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

San Francisco, US@katieschwartz

VC-backed startups (via Clera)

Exceptional engineers for SF and NYC startups. Base up to $300k plus meaningful equity.

SF & NYC@_sebastianscott

Ryze

Build autonomous marketing and creative systems. Above-market pay. Remote OK.

Remote (SF preferred)@irabukht