About the RoleWe're hiring a Senior Software Engineer - ML to join our Applied AI team at Supio. You'll work at the intersection of software engineering and AI-building, fine-tuning, and scaling ML systems that transform thousands of complex documents into structured, actionable data. This role is deeply hands-on: writing production-quality code, designing scalable pipelines, and shipping features that reach 100K+ users.
If you're a builder who thrives on solving ambiguous, data-heavy problems using ML and large language models-and you love seeing your work operating in production at scale-this is for you.
Note: this role is an Applied AI engineer who can actually code at a senior software level, with strong applied ML/LLM experience but not research-heavy or academic.
What You'll Do- Design and implement ML-powered systems that process large-scale document data (legal, medical, billing, etc.) from raw PDFs to structured insights.
- Fine-tune LLMs and build retrieval-augmented generation (RAG) and agentic systems for real-world use cases.
- Own code from prototype to production-writing performant, maintainable Python code and integrating ML services into Supio's core platform.
- Develop and optimize end-to-end evaluation frameworks to measure accuracy, latency, and reliability.
- Collaborate with product, design, and backend teams to bring AI features to life for real user problems.
- Work across the stack when needed: backend APIs, model serving, cloud infrastructure, and system monitoring.
- Partner directly with David Brinda (Hiring Manager) and technical leadership to shape Supio's ML roadmap.
What We're Looking For- Strong coding skills: You build production systems, not just research prototypes. Python expertise is required; experience with TypeScript or Go is a plus.
- Hands-on ML experience: You've fine-tuned models, shipped them into production, and maintained them at scale (100K+ MAU).
- Applied AI mindset: Comfortable with RAG systems, prompt engineering, agents, and data preprocessing/postprocessing for NLP tasks.
- Probabilistic thinking: You reason in uncertainty, understand performance tradeoffs, and are comfortable balancing precision and recall rather than fixed rules.
- Experience with cloud platforms (AWS, GCP, or Azure) and containerized environments for deployment.
- Clear communicator who can explain design decisions and model behavior to teammates and leaders.
Nice to Have- Experience in full-stack or backend engineering roles before moving into ML.
- Background in fintech, health tech, or document-heavy domains.
- Familiarity with scaling systems that process large, unstructured data (thousands of-page PDFs, mixed media, etc.).
- Grit, adaptability, and curiosity-competitive gamers or analytical thinkers who enjoy complex strategy problems tend to thrive here.
What You'll Work On in the First 6 Months- Building ML pipelines for classification, clustering, and semantic matching.
- Deploying and monitoring fine-tuned LLMs for document summarization and case analysis.
- Implementing Supio's homegrown RAG framework across major client streams.
- Delivering measurable impact by increasing model reliability and reducing processing time.
CompensationAs an early-stage startup, we offer a competitive compensation package that includes
base salary, meaningful equity, and benefits. Equity grants are designed to ensure employees share in the long-term success and upside of the company.
Base Salary by Location
- Seattle, WA: $190,000 - $255,000 annually
- San Francisco, CA: $190,000 - $255,000 annually
Actual compensation may vary outside of these ranges based on a number of factors, including a candidate's qualifications, skills, competencies, experience, and geographic location.
Compensation & Benefits- Competitive Salary + Meaningful Equity
- 401(k)
- Health, Dental, Vision, and Life Insurance
- Flexible Time Off + Holidays
- High-autonomy work environment, every Tuesday is a Remote Work Day
- DoorDash subsidies for breakfast and dinner; Daily lunch options
- Boba Wednesdays
- Monthly commuter subsidies and pre-tax parking contribution
- Team gatherings and offsites
