About the Role We're looking for founding Machine Learning Engineers (MLEs) to own and improve our core action models end-to-end— the intelligence that powers Composite's proactive automation platform. You'll work at the intersection of LLM inference, browser understanding, and low-latency systems, shipping models that need to feel instant while reasoning over complex page state and user context. Unlike hosted browser solutions that introduce latency and auth barriers, or consumer-focused "AI browsers," we run AI directly through professionals' existing browsers via a Chrome extension, creating instant response times with zero migration or IT friction. This architecture creates unique ML challenges. This is a high-ownership role on our small, exceptional team where your work ships directly to users and has the potential to tangibly improve the work lives of hundreds of millions of people. What You'll Work On Improve the accuracy and latency of our core models across diverse web applications to predict users' intended next actions and execute them faster than manual input Design and optimize LLM inference pipelines, including token caching strategies, streaming architectures, and network-level optimizations between client and server Build evaluation frameworks and data pipelines to measure and improve model quality at scale Experiment with retrieval-augmented approaches using vector databases for contextual memory Develop synthetic data generation pipelines for browser interaction training data Work with DOM states, accessibility trees, and user interaction data to improve browser understanding Ship features end-to-end that go directly to users — this is not a research-only role What We're Looking For ML & Systems Strong ML fundamentals with hands-on experience training and deploying models in production Obsessive about latency — experience optimizing inference pipelines to feel instant to end users Deep care about data quality, with the instinct to build tooling that ensures it Experience with LLMs, transformer architectures, or sequence prediction problems Comfortable working across the stack — our system spans a Chrome extension, Electron app, Cloudflare Workers edge proxy, and inference providers Core Qualities Character: You're someone we'd want to work closely with for the next ten years. You approach challenges with curiosity rather than ego. You're a team player, a great communicator, and aren't afraid to be wrong. Work Ethic: You're energized by hard problems and comfortable working intensely toward ambitious goals. Raw Intelligence: You can quickly understand complex systems and solve novel, ambiguous problems with self-guidance. Bonus Experience with browser automation, Chrome extensions, or web scraping at scale Familiarity with accessibility tree / DOM parsing for page understanding Background in RL or online learning from user interaction data Experience with vector databases (e.g., Turbopuffer, Pinecone) and hybrid search Full-stack development experience (TypeScript, Node.js, React) #J-18808-Ljbffr
Founding Engineer • San Francisco, CA, United States
Tavus is a research lab pioneering human computing.We're building AI Humans a new interface that closes the gap between people and machines.Our real-time human simulation models allow machines to ... Mostrar más
Founding Full Stack EngineerThis role is for one of the Weekday's clientsMin Experience:3 yearsLocation:Bay Area, San Francisco, USJobType:Full-timeWe're seeking a Founding Full Stack Engineer to h... Mostrar más
We are building Reflow, a workforce and workflow intelligence platform that helps teams improve performance through a deep understanding of how work actually happens.Customers get excited after the... Mostrar más
Job Title: Mechanical Test Engineer Job Description The Mechanical Test Engineer designs, develops, and validates complex mechanical test beds and environments that accurately simulate real-world... Mostrar más
Location: San Francisco (in-person, in-office, full-time ONLY).Compensation: $150k-$250k base + $25K-$50K cash bonus + top of market equity.Virio is building the next-generation B2B GTM stack.Backe... Mostrar más
What This Role Means For YouAutomate all the things we are aggressive users of n8n, virtual assistants, GPT (and all other AI tools) to automate all processes and things.Setup GTM infrastructure (H... Mostrar más
Aerospace Engineer Job Duties: Contributes to the design, manufacturing, and testing of aircraft and a... Mostrar más
Technical Program Manager, RF & Silicon Photonics.At STMicroelectronics, we believe in the power of technology to drive innovation and make a positive impact on people, businesses, and society.As a... Mostrar más
Frontend Engineer (HYBRID in SF / NY - Possibility of Remote) - 4454Frontend Engineer (HYBRID in SF / NY - Possibility of Remote) - 4454Get AI-powered advice on this job and more exclusive features... Mostrar más
A leading media and entertainment company is seeking a Full Stack Engineer to help build foundational systems at its San Francisco location.This role requires strong execution capabilities across t... Mostrar más
Advanced Electronics / Computer Field (ET/FC).The Advanced Electronics and Computer Field trains Sailors to maintain, operate, and repair some of the Navy’s most sophisticated electronics and compu... Mostrar más
We’re a stealth startup building AI hardware for complex manufacturers.At the intersection of AI, hardware development, and policy, they accelerate innovation and safety in the physical world.This ... Mostrar más
Title of Role: Founding GTM Engineer.Location: San Francisco, onsite.Company Stage of Funding: Venture-Backed AI, B2B, Software Development, Enterprise.We're representing a dynamic startup at the ... Mostrar más
Helium Is Building Self-Improving SoftwareHelium is building self-improving software:AI that automatically generates and tests new software experiences to lift revenue.We'reTalent-dense (8 people, ... Mostrar más
Founding Platform EngineerNetic is the AI revenue engine for essential services who are the backbone of the American economy.With $43M in funding from Founders Fund, Greylock, Hanabi, and Dylan Fie... Mostrar más
Novoflow Full-Stack Engineer OpportunityAt Novoflow, we are building the modernizing layer to the entire healthcare market.We deploy computer agents to automate anything in the front or back office... Mostrar más
Platform Engineering RoleThis is a unique Platform Engineering role that sits at the intersection of software engineering and infrastructure.We're looking for someone who can architect the data and... Mostrar más
Founding Software EngineerAttune is building developer tools for a post-AI world.Our first product is faster build tools that require zero migration effort.AI is enabling engineers to write code fa... Mostrar más
Founding EngineerGreybeam is looking for a Founding Engineer to join our Platform and Infrastructure team to build out our cloud platform.As a founding engineer, you will work directly with the co-... Mostrar más
Analyze, design and develop tests and test-automation suites.Design, create and develop a processing platform using various configuration management technologies.Test software development methodolo... Mostrar más
){kind=logo}
){kind=logo}
