This profile has not been claimed and data may not be accurate.
Founder237Current founder
96th percentile
Investor76Current investor
90th percentile
Combined
GitLab co-founder and Executive Chair, now building Kilo Code and Open Core Ventures
Credibility
this founder typical founder (50th pct)
Operator · 99th percentile
- Current Co-founder and Executive Chair of GitLab Inc.
- GitLab is a Y Combinator Winter 2015 alum.
- Co-founder of Kilo Code, ranked #1 on OpenRouter and processing more than 5 trillion tokens a month — strong AI-product traction.
- Past founder of Comcoaster prior to GitLab.
- Co-founded GitLab with Dmitriy Zaporozhets and others.
- Wikidata entity Q73462638 exists for Sid Sijbrandij, described as co-founder of GitLab Inc.
- GitLab founder interview on Kilo.ai with ~3,898 YouTube views — thought-leadership reach.
Relationship Matrix
Most Like You
Most Complimentary
Founder score
- 99%Probability of being accurate (99%)GitLab is a Y Combinator Winter 2015 alum.
- 98%Probability of being accurate (98%)Current Co-founder and Executive Chair of GitLab Inc.
- 95%Probability of being accurate (95%)gitlab.com ranks #156 on the Majestic Million (global domain prominence).
- 95%Probability of being accurate (95%)Co-founded GitLab with Dmitriy Zaporozhets and others.
- 95%Probability of being accurate (95%)Wikidata entity Q73462638 exists for Sid Sijbrandij, described as co-founder of GitLab Inc.
- 92%Probability of being accurate (92%)GitLab IPO'd on NASDAQ in 2021 at roughly an $11B market cap; the company currently trades around a $7B market cap.
- 80%Probability of being accurate (80%)Past founder of Comcoaster prior to GitLab.
- 80%Probability of being accurate (80%)GitLab founder interview on Kilo.ai with ~3,898 YouTube views — thought-leadership reach.
- 78%Probability of being accurate (78%)Featured profile in Forbes as one of the top business minds of the pandemic for spreading the gospel of remote work.
- 75%Probability of being accurate (75%)GitLab is a profitable, publicly-traded enterprise generating ~$759M in annual revenue.
- 70%Probability of being accurate (70%)Co-founder of Kilo Code, ranked #1 on OpenRouter and processing more than 5 trillion tokens a month — strong AI-product traction.
Investor score
- 92%Probability of being accurate (92%)Founder and General Partner at Open Core Ventures, an active investment firm forming open-core companies.
- 85%Probability of being accurate (85%)Founder and General Partner at Even One Ventures, an active investment fund.
- 85%Probability of being accurate (85%)Founded Open Core Ventures in 2020, giving roughly four years of investing experience leading a fund.
- 80%Probability of being accurate (80%)Identified as an active investor with a portfolio including Fleet and GitLab investments.
- 75%Probability of being accurate (75%)Holds two active board/advisor roles across companies per Crunchbase.
- 60%Probability of being accurate (60%)Portfolio company Uiflow was acquired (YC W21).
- 55%Probability of being accurate (55%)Portfolio company exit via smaller/undisclosed acquisition through Open Core Ventures holdings.
What you likely need
You're a public-company founder with a unicorn IPO behind you and an active second act spanning Kilo Code, Open Core Ventures, and Even One Ventures. The highest-leverage Festival events for you are small, peer-level dinners with other IPO founders and open-source GPs, plus tactical roundtables on AI-agent orchestration and operating a NASDAQ-listed open-core company. Skip the generic networking — go where you can compare notes with other technical operators running real revenue and real funds.
Would you attend these IRL Festival events?
We will tune and customize your Founder Festival experience to make sure you get invited to the events that would be most valuable to you.
- introsA YC W15 alumni founders dinner to compare post-IPO operator notes with peers from your own batch.
- fundraisingAn Open Core / commercial-OSS GP roundtable to source the next OCV company-formation ideas alongside other open-source investors.
- tacticalAn AI agent orchestration workshop with Kilo Code and other code-agent builders to pressure-test the OpenRouter-leading product roadmap.
- positioningA NASDAQ-listed founder dinner for current and former public-company CEOs to swap notes on board governance and Executive-Chair transitions.
- positioningA remote-first operating leaders roundtable to share the GitLab handbook playbook with the next wave of distributed-by-default founders.
- hiringA Kilo Code hiring happy hour with senior AI infra engineers from Anthropic, OpenAI, and Cursor alumni networks.
- wellbeingA philanthropy roundtable on cancer treatment and interpretability research aligned with the Sijbrandij Foundation's 100x-impact thesis.
- introsAn intros dinner connecting first-time open-source founders considering an S-1 path with you as YC's first open-source IPO.