Senior Software Engineer

Babylist is a company dedicated to solving problems for families, particularly around the journey of parenthood. They are seeking a Senior Software Engineer who will take ownership of complex engineering challenges, contribute to AI-driven solutions, and collaborate closely with product and design teams. The role emphasizes problem ownership and the ability to adapt and learn across various technical domains.

Responsibilities:

• Frame the problem with your PM as a peer, run the experiment and bring customer evidence into what gets built
• Harden a critical path, kill a class of incidents or design the abstraction your team builds on
• Be the reviewer people want on the risky changes
• Manage up with crisp choices: raise the risks early and protect the right tradeoffs
• Share what you're learning about AI openly, so the whole team gets sharper
• Deciding what the registry recommends to each family, from the ranking to the model behind it, and proving in a live experiment that it actually helps
• Building the evals system that catches our AI support agent making things up before a customer does
• Making a child's info one source of truth instead of five disconnected flows, so parents set it up once and new products like Early Investor build on it

Requirements:

• Years of experience shipping production systems
• Ability to pick up ambiguous problems and start moving before receiving the full picture
• Experience as a generalist engineer
• Proficiency in backend services, frontend bugs, and data pipelines
• Ability to dig in and learn unfamiliar parts of the stack quickly
• Experience with Rails, Packwerk, React, TypeScript, Sidekiq
• Experience with iOS (Swift) and Android (Kotlin)
• Experience with MySQL, Snowflake, dbt, Airflow, Weaviate, WarpStream, Hex, Sigma
• Experience with deep learning, matrix factorization, retrieval & ranking, AWS SageMaker, MLflow
• Experience with AWS, Kubernetes, Terraform, GitHub Actions, Datadog, incident.io, LaunchDarkly