Principal Software Architect - Data Platform

About SecurityScorecard: SecurityScorecard is the global leader in cybersecurity ratings, with over 12 million companies continuously rated, operating in 64 countries. Founded in 2013 by security and risk experts Dr. Alex Yampolskiy and Sam Kassoumeh and funded by world-class investors, SecurityScorecard’s patented rating technology is used by over 25,000 organizations for self-monitoring, third-party risk management, board reporting, and cyber insurance underwriting; making all organizations more resilient by allowing them to easily find and fix cybersecurity risks across their digital footprint.  Headquartered in New York City, our culture has been recognized by Inc Magazine as a "Best Workplace,” by Crain’s NY as a "Best Places to Work in NYC," and as one of the 10 hottest SaaS startups in New York for two years in a row. Most recently, SecurityScorecard was named to Fast Company’s annual list of the World’s Most Innovative Companies for 2023 and to the Achievers 50 Most Engaged Workplaces in 2023 award recognizing “forward-thinking employers for their unwavering commitment to employee engagement.”  SecurityScorecard is proud to be funded by world-class investors including Silver Lake Waterman, Moody’s, Sequoia Capital, GV and Riverwood Capital.  About the Role: SecurityScorecard is hiring a Principal Software Architect to lead the system design of our data platform. Rating 12 million companies continuously means ingesting internet-scale measurement data, processing it across streaming, microbatch, and batch paths, storing it so it stays queryable and affordable as it grows, and serving analytics fast enough that customers can explore their own risk in real time. The data is not a byproduct of our product. It is the product. That also raises the stakes on correctness. We publish a number about other companies, they dispute it, and underwriters price against it. A quiet data quality regression here doesn't produce a stale dashboard, it moves someone's score. Quality, contracts, and lineage are therefore architecture problems on this platform, not administrative ones. This is an individual contributor role reporting to the Chief Architect, alongside a Principal Architect focused on AI and agentic systems and a Principal Front-end Architect, and partnering closely with engineering leadership, Product, and Data Science. We're looking for someone who is opinionated about data architecture and persuasive about it: an architect whose designs get adopted because the reasoning is visible, not because they carry a title. Like the rest of our architecture function, you'll prototype to prove out decisions rather than implement full solutions, and you'll set direction through Technical Design Reviews (TDRs), and standards.  You will lead the data domain, and you'll bring enough general distributed systems judgment to review designs across the wider platform. What You'll Do Own the system design for our data platform end to end, from ingestion through to the serving layer Define the service boundaries and data contracts between producers and consumers, including schema ownership, compatibility rules, and what happens when a producer needs to make a breaking change Design the lakehouse: table format, partitioning strategy, schema evolution, compaction, and metadata growth at scale Architect the analytical serving layer for three workload classes with conflicting demands, isolated so that one never degrades another: low-latency, high-concurrency queries from customers in the product, ad-hoc exploration from internal analytics and Data Science, and bulk delivery to external feeds and partners Set direction on languages and frameworks in the data stack Engineer data quality and observability into the platform rather than bolting them on: validation and quarantine paths, freshness and completeness SLOs, drift detection, and lineage and metadata generated by the pipeline itself instead of maintained by hand Design for correctness and reproducibility in the ratings pipeline, including backfills and historical restatement when scoring logic changes Write the TDRs, design docs, and standards that set data architecture direction across teams, and push that intent into the repos themselves so engineers and coding agents both have it in local context Review TDRs from across engineering, giving teams substantive feedback on architecture and risk, not only on data work Partner with the AI & Front End Architects on the data access patterns, mentor senior and staff engineers on data system design Required Qualifications: 10+ years of software or data engineering experience, including significant time architecting large-scale data platforms Deep expertise in stream and batch processing at scale with Kafka, Flink, and Spark or close equivalents, and clear judgment about which path a given workload belongs in Strong Python and PySpark, solid Java for Flink stream processing, and enough Scala to read and reason about an existing Spark codebase Hands-on experience designing lakehouse storage in production: columnar formats such as Parquet, open table formats such as Iceberg, and the partitioning, compaction, and schema evolution decisions that come with them Experience architecting OLAP and analytical serving layers (ClickHouse, Druid, Pinot, BigQuery, Snowflake or similar) Strong distributed systems fundamentals as they apply to data: exactly-once versus at-least-once semantics, ordering, backpressure, late and out-of-order data, and pipeline failure modes A track record of building data quality, contracts, and observability as engineered system properties, meaning assertions, schema enforcement, and lineage that live in code  Experience owning a large-scale data migration, including preserving history and correctness through a cutover A track record of influence without authority: presenting a technical direction to skeptical engineers and earning genuin