Liftoff Jobs

A curated index of open roles at top-tier AI companies.

Weekly digest

Week of 27 July 2026

119 new roles this week across 33 companies; the biggest movers: OpenAI (+17), Valar Atomics (+10), LangChain (+9).

Research

  1. Member of Technical Staff - Research Software Engineer - Safety Evaluations Infrastructure — Reflection AI · Series B · New York · 11 weeks ago Builds open AI models that enable anyone to control and shape intelligent systems
  2. Member of Technical Staff - ML Scientist, Japanese Multimodal — Liquid AI · Seed · Tokyo · 11 weeks ago Builds efficient foundation models that run on-device across phones, cars, and edge hardware without sending d
  3. Member of Technical Staff (Model Behavior) — Perplexity · Series C · SF Bay Area · $200K–330K · 11 weeks ago AI-powered answer engine that provides conversational, source-backed responses to user queries
  4. Applied Scientist, EMEA — Mistral AI · Series D · Paris · 11 weeks ago Builds open-source AI models and platforms for deploying custom generative AI agents and applications

All research roles →

ML engineering

  1. Member of Technical Staff, AI Training Infrastructure — Fireworks AI · Series D · SF Bay Area · $210K–320K · 11 weeks ago Inference engine for deploying and fine-tuning open-source AI models with low-latency, high-throughput serving
  2. Member of Technical Staff - Applied ML, Japanese Multimodal — Liquid AI · Seed · Tokyo · 11 weeks ago
  3. Data Scientist, Ads Demand — OpenAI · SF Bay Area · $293K–515K · 11 weeks ago Develops AI systems including large language models like ChatGPT for research and commercial use
  4. Data Scientist, SMB Ads Growth — OpenAI · SF Bay Area · $293K–515K · 11 weeks ago

All ML engineering roles →

Applied AI

  1. Implementations Manager — Numeric · Series B · SF Bay Area · $145K–170K · 11 weeks ago AI platform automating financial close, reconciliations, and cash management for accounting teams
  2. Applied AI, Forward Deployed Engineer - Cybersecurity (Canada) — Mistral AI · Series D · Montreal · 11 weeks ago
  3. AI Deployment Strategist — Fireworks AI · Series D · SF Bay Area · $165K–220K · 11 weeks ago
  4. Software Engineer, Applied AI — Numeric · Series B · SF Bay Area · $155K–260K · 11 weeks ago

All applied AI roles →

Infrastructure

  1. Land Development & Due Diligence Lead — OpenAI · Remote · $199K–327K · 11 weeks ago
  2. Senior Third-Party Risk Specialist — Mistral AI · Series D · Paris · 11 weeks ago
  3. Sr. Security Engineer - GRC Fintech & Financial Services — xAI · Late Stage · SF Bay Area · $152K–258K · 11 weeks ago Develops Grok, an AI platform offering reasoning, code, voice, image, and video capabilities through a unified
  4. Industrial Compute — OpenAI · Remote · $150K–300K · 11 weeks ago

All infrastructure roles →

Software

  1. Member of Technical Staff, Nexus — Fireworks AI · Series D · SF Bay Area · $200K–290K · 11 weeks ago
  2. Member of Technical Staff (Android Engineer, Computer Growth) — Perplexity · Series C · SF Bay Area · $220K–405K · 11 weeks ago
  3. Member of Technical Staff (iOS Engineer, Computer Growth) — Perplexity · Series C · SF Bay Area · $220K–405K · 11 weeks ago
  4. Senior Product Engineer, Fullstack — Together AI · Seed · SF Bay Area · $160K–230K · 11 weeks ago Together AI is a cloud-based platform specializing in artificial intelligence infrastructure and tools
  5. Senior Software Engineer, Customer Insights — Together AI · Seed · SF Bay Area · $180K–250K · 11 weeks ago
  6. Software Engineer - Data Aquisition (systems) — OpenAI · SF Bay Area · $295K–536K · 11 weeks ago

All software roles →

Hardware

  1. Staff Mechanical Engineer — Mariana Minerals · Series B · Houston, TX · $140K–175K · 11 weeks ago Software-first developer and operator of critical mineral projects for energy, AI, and defense
  2. Principal Systems Engineer, Aircraft Simulation and Design Integration — Mach Industries · Series C · Huntington Beach, CA · $180K–250K · 11 weeks ago Develops low-cost autonomous aerospace and defense systems including drones, munitions, and propulsion compone
  3. Member of Technical Staff - Design Engineer — Valthos · Seed · New York · 11 weeks ago AI systems that identify biological threats and design medical countermeasures in real time
  4. Principal Instrumentation & Control Engineer — Valar Atomics · Torrance, CA · $196K–240K · 11 weeks ago Builds high-temperature gas reactors for industrial power, hydrogen, and clean fuel production at scale
  5. Prototype Engineering Lead — Etched · Seed · SF Bay Area · 11 weeks ago Etched.ai is a technology startup developing specialized hardware for large language model (LLM) inference
  6. Senior Electrical Engineer - Platforms (Power Systems) — Saronic · Series D · Austin · 11 weeks ago Saronic Technologies develops advanced autonomous surface vessels for naval and maritime applications
  7. Senior Conceptual Design Engineer - Advanced Concepts — Mach Industries · Series C · Huntington Beach, CA · $155K–195K · 11 weeks ago
  8. Senior MDAO Engineer — Mach Industries · Series C · Huntington Beach, CA · $155K–195K · 11 weeks ago
  9. Senior Process Engineer — Valar Atomics · Torrance, CA · $144K–176K · 11 weeks ago
  10. Senior Thermal-Hydraulics Analysis Engineer — Valar Atomics · Torrance, CA · $151K–185K · 11 weeks ago
  11. Electrical Engineer – UUVs & Undersea Electronics — Saronic · Series D · Austin · 11 weeks ago
  12. Powered Land Developer, Development & Power Projects — OpenAI · Remote · $223K–385K · 11 weeks ago

All hardware roles →

Science

  1. Member of Technical Staff - Applied Computational Biologist — Valthos · Seed · New York · 11 weeks ago
  2. Research Leader / Senior Scientist (In vitro / Cellular Pharmacology), Cambridge, MA — Isomorphic Laboratories · Series B · Boston · 11 weeks ago Builds AI models to accelerate drug discovery and design novel medicines
  3. Research Leader / Senior Scientist (In vivo Pharmacology & Translational Sciences), Cambridge, MA — Isomorphic Laboratories · Series B · Boston · 11 weeks ago

All science roles →

Design

  1. Design Engineer, Growth & Marketing — Perplexity · Series C · SF Bay Area · $180K–300K · 11 weeks ago

Go-to-market

  1. Regional Director — Modal · Series C · New York · $400K · 11 weeks ago Modal is a cloud-based serverless computing platform designed for data science and machine learning teams
  2. Director of Commercial Sales — LangChain · Series B · SF Bay Area · 11 weeks ago Framework and platform for building, testing, deploying, and monitoring LLM-powered agents
  3. Account Director, Digital Natives Growth — OpenAI · SF Bay Area · $189K–220K · 11 weeks ago
  4. Account Director, Large Enterprise — OpenAI · London · 11 weeks ago
  5. Enablement Lead, Programs — Mistral AI · Series D · Paris · 11 weeks ago
  6. Sales Enablement Lead — Fireworks AI · Series D · Remote · $210K–250K · 11 weeks ago
  7. Senior Manager, Product Partnerships — OpenRouter · Series A · Remote · 11 weeks ago Unified API gateway providing access to 500+ AI models across 80+ providers with intelligent routing
  8. Account Manager - Brazil — ElevenLabs · Series C · Mexico · 11 weeks ago AI platform generating realistic speech, music, and sound effects across 70+ languages
  9. Sales Lead - Mid-Market - East — ElevenLabs · Series C · Remote · 11 weeks ago
  10. Regional Sales Manager, New England — Armadin · Series A · Remote · 11 weeks ago armadin is an ai-native cybersecurity company focused on building the ultimate attacker
  11. Regional Sales Manager, New York City — Armadin · Series A · Remote · 11 weeks ago
  12. Regional Sales Manager, Southeast — Armadin · Series A · Remote · 11 weeks ago
  13. Regional Sales Manager, Southwest — Armadin · Series A · Remote · 11 weeks ago

All go-to-market roles →

Operations

  1. Director of Mining and Technical Services — Mariana Minerals · Series B · Moab, UT · 11 weeks ago
  2. Supply Chain Systems & Governance, Director — Valar Atomics · Torrance, CA · $225K–275K · 11 weeks ago
  3. Head of Technical Accounting — Etched · Seed · SF Bay Area · 11 weeks ago
  4. Technical Program Manager, Human Data Annotation (Code) — Mistral AI · Series D · Paris · 11 weeks ago
  5. Recruiting Manager — Sierra · Late Stage · Tokyo · 11 weeks ago Conversational AI platform that deploys customized agents across chat, voice, email, and SMS for customer supp
  6. Lead Revenue Accounting, Technical (Strategic Partnerships) — OpenAI · SF Bay Area · $216K–240K · 11 weeks ago
  7. Manager, Facilities Operations - Memphis — xAI · Late Stage · Southaven, MS · 11 weeks ago
  8. Global Supply Manager — Valar Atomics · Torrance, CA · $160K–220K · 11 weeks ago

All operations roles →

General

  1. Ricursive at DAC 2026 — Introduce Yourself — Ricursive Intelligence · Series A · SF Bay Area · 11 weeks ago Designs AI chips using machine learning to optimize semiconductor development and inference performance

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