Member of Technical Staff

About the Company

Beacon is acquiring and operating a portfolio of vertical SaaS companies. We are building a cross-portfolio platform featuring a datalake on open table formats, a feature store, and an action layer to scale portfolio operations, value creation, and deal sourcing through software.

Responsibilities

• Own core stack components end-to-end including design, implementation, and operations
• Build and maintain the cross-portco data lake using Iceberg with Snowflake or Databricks
• Develop core services and APIs for identity, access control, audit, and workflow orchestration
• Implement multi-tenant isolation across data, compute, and credential boundaries
• Design and execute workflow and action runtimes with idempotency and rollback paths
• Build observability harnesses including traces, metrics, and structured logs
• Design safety mechanisms such as autonomy tiers and kill switches to manage blast radius

Requirements

• Senior engineering depth equivalent to Staff or Principal level
• Proficiency in at least one of Python, Go, Rust, or TypeScript
• Deep intuition regarding distributed systems, idempotency, and partial failure
• Experience building or operating modern data stacks (e.g., Kafka, Spark, dbt, Iceberg, Snowflake)
• Platform mindset focused on developer experience and API design
• Ability to navigate ambiguity and make long-term architectural decisions
• Interest in modern ML and the ability to build infrastructure around models

Preferred Qualifications

• Prior Staff or Principal Engineer experience at a high-bar engineering organization
• Experience with Iceberg, Polaris, Snowflake, or Databricks at scale
• Background in multi-tenant SaaS or platform infrastructure
• Production experience with LLM-driven systems, including evals and observability
• Background in offline RL, contextual bandits, or sequential decision-making
• Open-source contributions to data infrastructure or developer tooling