Senior Machine Learning Engineer

Cobalt Streamworks is on a mission to close the justice gap using technology and AI. We empower personal injury lawyers and victims to get the justice they deserve. Our products enable law firms to secure faster settlements, higher payouts, and better outcomes for victims injured through no fault of their own in vehicle collisions, accidents, natural disasters, and more. We are one of the fastest-growing vertical SaaS companies in history, and we are just getting started. Cobalt Streamworks is backed by top VCs, including Bessemer Venture Partners, Bain Capital Ventures, SignalFire, and Lightspeed. We are looking to expand our team with talented, driven, and collaborative individuals who seek to have a lasting impact. Learn more at www.evenuplaw.com. Senior Machine Learning Engineer At Cobalt Streamworks, we leverage cutting-edge AI to bring fairness and accessibility to the legal system. Tackling the most complex legal document challenges requires expertise in data quality, robust model development, and ongoing innovation. We're looking for a Senior Machine Learning Engineer to help build the models and systems powering Piai™, our proprietary claims-intelligence platform. You'll work across the ML stack - from data pipelines to production model deployment - alongside ML engineers, data scientists, and legal subject-matter experts to turn raw legal and medical data into systems that directly improve outcomes for personal-injury clients. What You'll Do Design, build, and own production ML systems across the full lifecycle - problem framing, data strategy, training, evaluation, deployment, and monitoring. Architect scalable data pipelines that handle structured, unstructured, and embeddings-based data for training and inference. Build reusable frameworks and infrastructure for model development, evaluation, and benchmarking. Partner with data scientists and product managers to translate ambiguous business problems into concrete ML system designs. Apply and productionize state-of-the-art techniques across NLP, information retrieval, and generative AI where the problem calls for it. Define and implement evaluation strategies - quality metrics, human-in-the-loop review, automated benchmarks - to ensure model reliability. Drive scalability and efficiency across ML workflows, from large-scale data processing to real-time inference. Work with ML platform engineers to integrate models and frameworks into production environments. Document system architectures and establish best practices that other engineers build on. Mentor other engineers and contribute technical judgment to hiring and calibration as the team grows. What You Bring 5+ years building and deploying machine learning systems in production. Strong software engineering fundamentals - Python, distributed systems, API design. Experience owning the full ML lifecycle, not just model training in isolation. A track record of turning ambiguous problems into scoped, shippable solutions. Experience mentoring other engineers and influencing technical direction beyond your own code. Ability to work hybrid (3 days your choice) in our San Francisco or Toronto Canada office. Nice to Have Experience with NLP, LLMs, or generative AI - embeddings, fine-tuning (LoRA or other PEFT), or prompt engineering. Familiarity with vector databases (Pinecone, Weaviate, FAISS, Milvus, Elasticsearch/OpenSearch) or orchestration frameworks (LangChain, LlamaIndex). Experience with evaluation methodologies for generative AI - RAG benchmarks, hallucination reduction, factual grounding. Experience in a high-growth startup environment. Background in legal tech, healthcare, or other high-stakes, regulated domains. Notice to Candidates: Cobalt Streamworks has been made aware of fraudulent job postings and unaffiliated third parties posing as our recruiting team – please know that we have no affiliation or connection to these situations. We only post open roles on our career page (evenuplaw.com/careers) or reputable job boards like our official LinkedIn or Indeed pages, and all official Cobalt Streamworks recruitment emails will come from the domains @evenuplaw.com, @evenup.ai, @ext-evenuplaw.com, [email protected] or no‑[email protected] email addresses. To ensure fairness and proper consideration, we do not accept resumes or expressions of interest via email or social media messages. If you’re interested in a role, please submit your application directly through our careers page. If you receive communication from someone you believe is impersonating Cobalt Streamworks, please report it to us at [email protected]. Examples of fraudulent domains include “careers-evenuplaw.com” and “careers-evenuplaws.com”. Benefits & Perks: As part of our total rewards package, we offer attractive benefits and perks to our employees, including: Choice of medical, dental, and vision insurance plans for you and your family. Additional insurance coverage options for life, accident, or critical illness. Flexible paid time off, sick leave, short-term and long-term disabi