Sowmya Ranganathan

CEO

San Francisco, California, United States17 yrs experience
Highly StableAI Enabled

Key Highlights

  • Founded Lumera to enhance finance teams with AI.
  • Scaled OpenAI's controllership for multi-billion-dollar revenues.
  • Led accounting at Rippling during its growth to decacorn.
Stackforce AI infers this person is a Finance and AI expert with extensive experience in high-growth technology companies.

Contact

Skills

Other Skills

Artificial Intelligence (AI)Data IntegrationsFinancial AnalysisAccountingAuditingCorporate FinanceInvestment ManagementFinancial AccountingFinancial ReportingCanadian GAAPIFRSInternal ControlsAccount ReconciliationGAAPMicrosoft Excel

About

Hi, I'm Sowmya. I founded Lumera (lumerahq.com) to help companies build high-performing finance teams by leveraging the power of AI. Before Lumera, I served as Controller at OpenAI—the creators of ChatGPT—joining the team in March 2023 during the launch of ChatGPT Plus. While there, I scaled the Controllership function to accurately report on multi-billion-dollar revenues and support a platform of over 400 million weekly active users. Prior to OpenAI, I was the first accounting hire at Rippling, leading the Accounting team through a period of extraordinary growth from a Series A startup into a decacorn valued at over $10 billion. Earlier in my career, I held key finance leadership roles at various technology companies, including Square during its IPO. Through these experiences, I've developed deep expertise in applying software and AI to streamline finance and operational workflows. I'm excited to share these insights with you!

Experience

Lumera

Co-Founder, CEO

Sep 2025Present · 6 mos · San Francisco, California, United States

Openai

Controller

Mar 2023Mar 2025 · 2 yrs · San Francisco, California, United States

Rippling

Controller

Oct 2019Mar 2023 · 3 yrs 5 mos · San Francisco, California

  • Rippling is an all-in-one HR & IT system that automates all of your manual processes. Check out https://www.rippling.com/

Brightloom

2 roles

Controller

Promoted

Dec 2018Oct 2019 · 10 mos

Assistant Controller

Jan 2017Dec 2018 · 1 yr 11 mos

  • Building out the accounting team to grow with the company. Exciting work every day!

Square

Corporate Accounting Manager

Nov 2014Jan 2017 · 2 yrs 2 mos · San Francisco Bay Area

  • I managed Monthly, Quarterly and Annual GL close at Square. I ensured that all deadlines for journal entries, variance analysis and reconciliations were met by our high-performing Accounting team of 30+ people. I built and managed a process to deliver high quality Audit PBCs to external auditors in a timely manner - critical to 10-K/Q Reporting. I also revamped and managed the monthly flux review process for the broader Finance Team and compiled the review document consumed by Controller/CFO on a monthly basis.
  • I was a key contributor to Square’s IPO - Financial Statements and MD&A preparation, liaising with external auditors and business partners for ad hoc requests relating to S-1 filing and ownership of the accounting for IPO Equity Issuance Costs end-to-end.
  • I led a team of five accountants, and owned the following areas of GL: Consolidations and GL Close, Capitalized Software, Accruals, Fixed Assets, Prepaids, Facilities Expenses, Leases, Deferred Rent, Cash, Debt, Intangibles, Patents and the majority of Corporate Opex. I reduced 2+ days of Staff Accountant effort per month by automating reconciliations and reporting for the areas I owned.
  • In addition to GL areas, I was the go-to person for end-user questions for Oracle, Hyperion, Blackline and APEX Reporting tools.

Fuze, inc.

Senior Accountant

Apr 2014Nov 2014 · 7 mos · San Francisco, CA

  • At Fuze, I was the CFO and Controller’s go-to person for all queries relating to GL accounting, expenses, cash flow, bank transactions, AP. I supervised accounts payable team and staff accountants and was the face of Finance to the rest of the company.

Ernst & young

Senior - Assurance

Jan 2009Apr 2014 · 5 yrs 3 mos · Toronto, ON

  • I worked on public and private company financial statement audits, with a focus on the technology and financial services sectors. Portfolio of audit clients included a large software company, a "Big 5" bank, mutual funds, pooled funds, private equity firms, a healthcare service provider and a not-for-profit organization.
  • My role involved applying technical financial accounting knowledge and current developments to specific client needs, designing and executing audit procedures for significant risk areas, supervising junior and experienced staff accountants and serving as the primary point of contact with Ernst & Young for clients.

Tmx group

Accounting Analyst (Internship)

May 2008Aug 2008 · 3 mos

  • Financial accounting and financial analysis.

Education

University of Waterloo

Bachelor of Mathematics — Chartered Accountancy - Finance Option

The Institute of Chartered Accountants of Ontario

CPA — CA (Ontario)

University of Waterloo

Master of Accounting

Stackforce found 100+ more professionals with Artificial Intelligence (AI) & Data Integrations

Explore similar profiles based on matching skills and experience