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ParafinParafinSan Francisco, CA

Senior Software Engineer, ML Platform

Build and maintain scalable ML platform for model experimentation, training, evaluation, inference, and feature store to power underwriting products. Requires 5+ years experience with Python, ML stacks like Databricks/AWS, and MLOps systems.

230k – 265k
Hybrid5+ YOEML Engineering

About the role

What You'll Do

  • Turn notebooks into software. Decompose data scientist training/inference notebooks into reusable, tested components (libraries, pipelines, templates) with clear interfaces and documentation.
  • Create developer-friendly ML abstractions. Build SDKs, CLIs, and templates that make it simple to define features, train/evaluate models, and deploy to batch or real-time targets with minimal boilerplate.
  • Build our real-time ML inference platform. Stand up and scale low-latency model serving.
  • Expand batch ML inference. Improve scheduling, parallelism, cost controls, observability, and failure/rollback for large-scale batch scoring and post-processing.
  • Own and expand the feature store. Design offline/online feature definitions, high read/write throughput, and consistent offline/online semantics.
  • Platform reliability and observability. Instrument training/inference for latency, throughput, accuracy, drift, data quality, and cost; build alerting and dashboards; drive incident response and postmortems.
  • Underwriting infrastructure partnership. Support production batch and real-time underwriting systems in collaboration with Data Science; collaborate on model interfaces, SLAs, safety checks, and product integrations.

What We Are Looking For

  • 5+ years of software engineering experience, including experience on ML platform/MLOps systems (training, deployment, and/or feature pipelines).
  • Strong Python; solid software design and testing fundamentals. Proficiency with SQL; hands-on Spark/PySpark experience.
  • Knowledge of ML fundamentals—probability & statistics, supervised vs. unsupervised learning, bias/variance & regularization, feature engineering, model evaluation metrics, validation strategies, and production concerns like drift, stability, and monitoring.
  • Expertise with modern data/ML stacks—AWS, Databricks (workflows, lakehouse, MLflow/registry, Model Serving), and Airflow (or equivalent orchestration).
  • Experience building real-time systems (service design, caching, rate limiting, backpressure) and batch pipelines at scale.
  • Practical knowledge of feature-store concepts (offline/online stores, backfills, point-in-time correctness), model registries, experiment tracking, and evaluation frameworks.
  • Strong problem-solving skills and a proactive attitude toward ownership and platform health.
  • Excellent communication and collaboration skills, especially in cross-functional settings.

Bonus Points

  • Databricks experience (MLflow, Model Serving).
  • Experience with feature stores (e.g., Tecton, Feast) and streaming (Kafka/Kinesis).
  • Experience with fintech, risk, or underwriting systems; familiarity with model safety checks, rejection/override flows, and auditability.
  • Background with A/B testing platforms, shadow/canary deployments, and automated rollback.
  • Experience with low-latency inference systems.

What We Offer

Salary Range: $230k - $265k
Equity grant
Medical, dental & vision insurance
Work from home flexibility
Unlimited PTO
Commuter benefits
Free lunches
Paid parental leave
401(k)
Employee assistance program

Skills

PythonSQLPysparkSparkAWSDatabricksAirflowMLflowKubernetesKafkaTectonFeast

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