Machine Learning Engineer at Shepherd

WHAT WE DO Shepherd is a technology-driven Managing General Underwriter (MGU) transforming commercial Property & Casualty insurance for high-hazard industries. Our mission is to make risk frictionless for the builders and operators shaping the physical world — protecting progress from concept through construction and into decades of operation. We’re building the fastest, smartest commercial risk platform, where underwriting expertise, data, and automation work together to deliver: - Faster decisions - Smarter, more accurate pricing - Better risk outcomes With Shepherd, safety, speed, and quality no longer trade off against one another — they compound. We’re not just modernizing insurance products. We’re building the risk infrastructure for the next generation of financial services, where technology, underwriting, and partnerships operate in harmony to support the world’s most important industries — and the progress they make possible. OUR INVESTORS To date, Shepherd has raised over $20M from leading investors, including: - Spark Capital [Upgrade to PRO to see link] - Costanoa Ventures [Upgrade to PRO to see link] - Y Combinator [Upgrade to PRO to see link] - Susa Ventures [Upgrade to PRO to see link] - Intact Ventures [Upgrade to PRO to see link] - And several others OUR TEAM We're a team of technologists and insurance enthusiasts, bridging the two worlds together. Check out our About [Upgrade to PRO to see link] page to learn more. THE MISSION: FULLY AUTONOMOUS UNDERWRITING We think about underwriting autonomy the same way Waymo thinks about self-driving cars. Not as a binary switch, but as a graduated progression through defined capability levels. Today, Shepherd sits at the border of L1 for our first Operational Design Domain. You will build the ML systems that carry us from L1 to L3 and beyond. Every model you ship, every feedback loop you close, and every confidence threshold you calibrate is one more autonomous mile driven. 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 build those things. You have the opportunity to define the ML function from the ground up at a company building something genuinely new in a large, underserved market You will work directly with underwriters to deeply understand the domain, and translate that understanding into ML systems that get meaningfully better over time. You will own the full ML lifecycle – from data through to production – and be the connective tissue between the domain expertise that exists in the business and the systems we’re building to scale it. WHAT YOU’LL DO This is an end-to-end ML role. You will own the full lifecycle from raw data through to production systems, and work closely with underwriters, engineers, and product to advance FAU through its autonomy levels. - Design, build, and ship ML systems that power autonomous underwriting decisions in production - Build and close the feedback loops that turn human underwriter behavior into training signal and compounding model improvement - Develop confidence scoring and evaluation frameworks that define when the system is ready to take on more autonomy and when to step back - Work with large language models to build reliable, auditable, and improvable agentic workflows across the underwriting lifecycle - Partner directly with underwriters to extract domain knowledge, validate outputs, and earn the trust required to expand the system’s operating domain - Contribute to the observability, monitoring, and guardrail infrastructure that keeps AI underwriting safe as autonomy scales WHO YOU ARE Required - 4+ years of industry experience building and shipping ML systems end-to-end, from raw data to production models - 4+ years of industry experience building and shipping ML systems end-to-end, from raw data to production models, including experience with model deployment platforms (e.g., AWS Sagemaker) - Experience finetuning SLMs/LLMs, with a preference for experience using techniques like RLHF, DPO, or LoRA. - Deep proficiency in Python and modern ML frameworks (PyTorch, HuggingFace, Tensorflow, OpenAI Gym/Gymnasium or similar) - Experience with LLMs in production: prompt engineering, structured outputs, tool use, evaluation, and cost/latency tradeoffs - Experience building reliable models with limited labeled data, including synthetic data generation, data augmentation, or similar techniques" - Strong evaluation instincts: you know how to define what ‘better’ means before you build, not after - Comfort with ambiguity, highly autonomous, and a bias toward building something real over architecting something perfect - Excellent collaboration skills. You will spend significant time with non-technical underwriters and need to earn their trust Nice to Have - Familiarity with document parsing, information extraction, or NLP on unstructured business documents - Background in insurance, finance, or other high-stakes structured domains where model errors have real consequences - Experience with agentic frameworks or multi-step LLM orchestration (LangChain, LangGraph, or custom) - Confidence calibration experience: isotonic regression, Platt scaling, or similar techniques - TypeScript proficiency. Our platform is TypeScript-heavy and cross-functional contribution is valued - Familiarity with data pipelines: SQL, dbt, Spark, or equivalent - MS or PhD in a quantitative field (ML/AI, Statistics, Math, Physics) BENEFITS  🏥 Premium Healthcare 100% contribution to top-tier health, dental, and vision 🥕 Fertility benefits and family building support 🏖️ Unlimited PTO Flexibility to take the time off, recharge, and perform 🥗 Daily lunches, dinners, and snacks We work together, and enjoy meals together too 🖥️ SF, NYC, Dallas-Fort Worth, Chicago and LA Offices 📚 Professional Development Access to premium coaching, including leadership development 🏦 Competitive 401(k) Plan 🐶 Dog-friendly office Plenty of dogs to play with and make friends with in the SF office