Loren Siebert
VP of Engineering at Paradigm
Mill Valley, California
Overview
Work Experience
Personal Sabbatical
2025 - Current
Giving myself some time and space to reflect on how I want to shape the next chapter—whether that's building, advising, leading, or something totally unexpected. Excited to focus on personal growth, family, travel, and exploration of new ideas.
VP of Engineering
2024 - 2025
- recreated the entire Engineering function from scratch, hiring senior developers and building a culture of high trust, low ego, and top performance. - balanced long-term thinking with short term pragmatism: ship fast while keeping Future Us in mind. - remained a hands-on engineering leader throughout: writing code, reviewing PRs, and troubleshooting alerts alongside my team. - built initial GenAI agent prototypes leveraging semantic search, reciprocal rank fusion, and retrieval augmented generation.
Head of Engineering
2023 - 2024
Senior Software Engineer
2022 - 2023
Paradigm is a research-driven crypto investment firm that funds companies and protocols from their earliest stages
Venture Partner
2015 - 2022
Technical advisor helping entrepreneurs at outstanding software companies execute private stock transactions.
Akkadian Ventures is a direct secondary investment firm that offers liquidity to early employees and investors of venture-backed businesses.
Data Engineer
2020 - 2022
Created comprehensive Python/SQL ETL system to ingest hundreds of versioned data shapes from dozens of Kafka publishers into seven Snowflake data warehouses. Scaled to billions of events daily.
Citadel Securities is a next-generation capital markets firm delivering critical liquidity and helping to shape the markets of tomorrow.
Raised $1,150,000,000.00 from Paradigm and Sequoia Capital.
Software Engineer
2018 - 2020
Built out several multi-TB Elasticsearch clusters to support Arabic/English/Chinese-language ML products for data science team. Wrote all initial code for a data pipeline based on S3/SNS/SQS.
Primer develops a text analytics solution designed to automate the analysis of textual data.
Raised $237,049,995.00 from Angel Collective Opportunity Fund, Addition and US Innovative Technology Fund.
Software Engineer
2016 - 2018
Built first DC/OS framework on Elastic Stack using DC/OS Commons library. Helped identify requirements and troubleshoot issues with both the underlying library and the test suite.
DMI is a full-service commercial real estate syndication, management, construction, and brokerage firm that truly cares about delivering.
Founder
2007 - 2016
Created language learning service that works in conjunction with existing collage and US Army Special Forces curricula. Salon.com: http://bit.ly/PxSYkf. SFChronicle front page: http://bit.ly/MVwGDu
Search/Analytics Architect
2009 - 2015
Built search/analytics solution for federal/state government agencies (e.g., usa.gov, whitehouse.gov, noaa.gov, nps.gov) that offer search to site visitors.
FEDSIM delivers innovative solutions to the most challenging acquisitions.
Lecturer, Arabic Language
2006 - 2007
Teaching Modern Standard Arabic
Engineering Intern
1988 - 1992
Held multiple software development positions in different groups within the Agency, primarily in SigInt organizations. Held TS/SCI clearance with full scope polygraph.
Defending Our Nation. Securing The Future.