Founding Machine Learning Engineer [33116]
Stealth Startup
We're hiring our Founding Machine Learning Engineer (MLE) with expertise in Agent Development and Time-Series Modeling. You'll play a foundational role in building production-grade systems that combine the power of LLM-powered agents with time-series foundation models. The Role This is not a narrow research role — you'll design, train, deploy, and monitor ML systems end-to-end, moving from prototype to production with speed and autonomy. You'll also be a core contributor to defining how agents interact with multimodal numerical data, a problem space where the playbook does not yet exist. Job Description Design, train, and deploy production ML systems (LLM-powered agents + time-series models) Build and scale LLM-powered agents with advanced capabilities: multi-step reasoning, tool integration, autonomous workflows, memory/context management, and adaptive strategies Develop and refine evaluation frameworks for agents, ensuring reliability, safety, and measurable performance Apply and extend time-series modeling techniques (forecasting, anomaly detection, multimodal fusion) in real-world customer scenarios Operate end-to-end: from data ingestion and preprocessing to deployment, monitoring, and continuous improvement Stay ahead of the curve on the latest innovations in AI agents, orchestration frameworks, and infrastructure (MCP, A2A, etc.) Partner directly with researchers, engineers, and lighthouse customers to validate solutions and drive rapid iteration What we're looking for Proven industry experience (4-10 years) as an ML Engineer, Research Engineer, or Applied Scientist, with a track record of shipping production ML systems Hands-on expertise in LLM-powered agents: multi-step reasoning, tool use, context windows, autonomous workflows, agent memory Deep understanding of agent evaluation techniques (reliability, safety, success metrics) Up-to-date with modern agent infrastructure and frameworks (MCP, A2A, etc.) Fluency with ML engineering best practices: reproducibility, monitoring, scaling, CI/CD, observability Comfort operating in a fast-paced startup: shipping quickly, making tradeoffs, and thriving in ambiguity Nice to have Experience training custom neural networks beyond pre-trained LLMs (e.g., transformers for time-series or multimodal data) A background in time-series modeling (forecasting, anomaly detection, classical + deep learning approaches) Published research or open-source contributions in ML/AI #J-18808-Ljbffr Stealth Startup
- ...the company We’re a team of engineers, neuroscientists, and designers... ...’re building a generational founding team which is truly full-... ...and demand intense, fast-paced learning. You will: Critically... ...evaluate and implement the best machine learning approaches for our...SuggestedFull time
- ...Founding Machine Learning Engineer About the job Who we are Voyage is a Maison for Mind Computing – the first deep tech couture house, engineering non-invasive neural interfaces as objects of desire. With a founding team from Apple, MIT Media Lab, Harvard, the Royal College...SuggestedShift work
- ...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...SuggestedSleeping nights
- ...Founding ML Architect San Francisco, CA About This Role We are looking for a world... ...code generation, reinforcement learning, layout optimization etc. You'll lead a... ...edge research into usable tools for chip engineers. You should bring deep expertise in ML for...Suggested
- ...The Role You will be Shepherd's first Machine Learning Engineer, embedded in the Fully Autonomous Underwriting (FAU) team. This is a high-ownership, high-ambiguity role. There is no existing ML platform to inherit, no established model registry to maintain. You will...Suggested
- ...heals, evolves, and documents codebases autonomously. As a Founding ML Engineer , you’ll architect the intelligence powering autonomous pull... ...Lead the roadmap for intelligence infrastructure and long-term learning 3 to 5+ years of experience building and shipping applied ML...Remote workFlexible hours
- We are looking for the person who will own the central machine learning problem at Subvocal: turning weak, noisy, highly variable physiological signals into continuous language. We have already built prototypes that decode subvocal speech at more than 200 words per minute...Full timeShift work
- ...the boundaries of what our ML systems can do. We're hiring a Founding ML Engineer to own the research and engineering behind our core... ...classifiers, and embedding models Comfortable with contrastive learning, metric learning, and representation learning Experience using...
- ...building Kodezi OS, a real-time, cross-platform operating system that heals, evolves, and documents codebases autonomously. The Founding ML Engineer will architect intelligence powering autonomous pull requests, long-term memory, and self-improving workflows across product...Remote work
- A pioneering hedge fund in San Francisco is seeking a Founding ML Engineer to architect and build machine learning systems for investment decisions. This hands-on role requires 5-10+ years of experience and proficiency in Python and ML frameworks like PyTorch and TensorFlow...
- ...context and delivers help automatically. Founded in 2009, Superhuman empowers over 40... ...busywork and focus on what matters. Learn more at superhuman.com and about our... ...leveraging Superhuman ubiquitous UI. As a Machine Learning Engineer on this team, you will be at the heart...Full timeWorldwideHome officeFlexible hours
- ...recover human embodied intelligence as a learned model. To achieve this, we build... ...research into intelligence itself. Founded by Stanford and UC Berkeley researchers... ...join us. The Opportunity As a Machine Learning Engineer, you’ll work on multimodal perception,...Full timeShift work
- .... About the Role You will build machine-learning systems that remove real bottlenecks from... .... The role spans research and engineering: identifying valuable problems, adapting... ...of working together. Get to know the founding team! Apply Today Curious but not...Full timeH1bVisa sponsorship
- ...consistently fail. We are a small, fast-growing team of engineers in San Francisco powering Fortune 100 enterprises,... ...in-office at our San Francisco office ~ Eager to learn and adapt quickly ~ Prior startup or founding experience is a plus About the Role Create...Full timeWork at officeVisa sponsorshipRelocation package
- ...Lab, Google Brain, Scale AI, and Qualcomm. We've previously founded and sold companies and created products used over 30... ...conferences like ICLR, ICML, AAAI. Role Description As a Machine Learning Engineer at Advex, you will play a pivotal role in shaping the company...Full time
$200k - $280k
A leading voice AI startup is seeking a Founding Senior Machine Learning Engineer to fine-tune and deploy human-like voice agents, handling millions of real-time calls. This role offers a salary range of $200,000 to $280,000 per year, with significant equity and benefits...- Icehouseventures is looking for founding Machine Learning Engineers (MLEs) to enhance their core action models for a proactive automation platform. This role offers the chance to work closely on LLM inference, aiming for instant response times without IT friction. Join...
- ...a data-driven AI platform that bridges human and machine intelligence. We are hiring two founding engineers to turn strong customer pull into repeatable, measurable... ...and rapid delivery. You will work across machine learning, full-stack product, desktop systems, and customer...
- AfterQuery is hiring a Founding Machine Learning Engineer, Quality Intelligence to build ML and data systems that measure, improve, and scale data quality in frontier AI models. You’ll work on production systems at the intersection of machine learning, human expertise,...
- A leading AI technology firm in San Francisco seeks a Founding ML Engineer to lead the research and engineering of their core AI systems. You will convert messy, multilingual web-scale data into structured intelligence, resolve data discrepancies, and train ML models from...
- CrisPRO.ai in San Francisco Bay Area is seeking a founding engineer to build the core ML infrastructure for our genomics platform, supporting Evo2 integration and the S/P/E framework for oncology. You will implement scalable ML pipelines, optimize models for real-time clinical...Remote jobFlexible hours
$250k
...venture-backed AI Startup, is hiring a talented ML/AI Research Engineer to join their team in San Francisco. The successful candidate will... ...with SOC2, HIPAA or GovCloud environments, or prior startup/founding team experience is a bonus. Benefits ~Salary: Circa. $250k....Full time$160k - $240k
...for everyone, including yourself, you’ve found a match in Workday, and we hope to be a... ...problems at the intersection of machine learning, agentic reasoning, and enterprise-scale... ...applications.About the RoleAs a Machine Learning Engineer on the AI Core team, you will develop...Full timeWork at officeRemote workHome officeFlexible hours- Abacus is hiring its first Founding Engineer to own and expand the core ML engine behind our AI-powered document automation. You will work in person from our San Francisco office and collaborate directly with the co-founders to shape product and technical direction. In...Work at office
- Stealth Startup is seeking a Founding Machine Learning Engineer in San Francisco to design, train, deploy, and monitor end-to-end ML systems that combine LLM-powered agents with time-series models. You will lead development, define how agents interact with multimodal data...
- Moss is building the retrieval runtime for real-time AI. We’re looking for a Founding ML Engineer to own the models and machine learning systems, from embeddings to multilingual understanding and the Action Layer. You will own the full model-development cycle, including...
- ...Industries is a multifaceted media and entertainment company founded by Jimmy Donaldson, popularly known as MrBeast, the most... ...build a legacy that inspires future generations. Senior Machine Learning Engineer Primary: Bay Area (San Francisco / Peninsula) | Secondary...Full timeWork at officeRelocation packageFlexible hours2 days per week
- A leading AI infrastructure firm based in San Francisco is looking for engineers to join their founding core team. You will work directly with the founders to develop AI models that optimize network operations and anticipate failures. This unique position offers the opportunity...
$180k - $270k
...data security and privacy protection. To learn more about Plaud, please visit and... ...-throughput, ultra-low-latency inference engines for large language models or foundational... ...using Kubernetes. What We Offer Founding Team Initiative: Opportunity to be an early...Full timeWork at officeWorldwide- ...Anthropic, Meta Superintelligence Labs, and Microsoft AI. Machine Learning Engineer, Quality Intelligence Overview AfterQuery builds... ...encode and scale real-world expertise. We’re hiring a Founding Machine Learning Engineer, Quality Intelligence to build...Full time
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