Table of Contents
- Census / Fivetran Activations founders and financing at a glance
- Who is Boris Jabes?
- Who is Bradley Buda?
- Who is Anton Vaynshtok?
- Who is Sean Lynch?
- Why the founders built Census / Fivetran Activations
- What Census / Fivetran Activations does
- What makes the founder thesis distinctive?
- Census / Fivetran Activations financing and transaction history
- What the latest milestone was intended to change
- Founder and company timeline
- The founders' public thesis
- Strengths, risks and unresolved questions
- Evidence to watch over the next 12 to 18 months
- Frequently asked questions
Boris Jabes, Bradley Buda, Anton Vaynshtok and Sean Lynch founded Census / Fivetran Activations, the reverse etl and governed data activation business now serving data, analytics, marketing, sales and customer-success teams. Boris Jabes is Co-founder and former CEO; Bradley Buda is Co-founder and former CISO; Anton Vaynshtok is Co-founder; Sean Lynch is Co-founder and former CPO.
The latest material financing milestone covered here is Fivetran acquisition, dated 2025-05-01. The relevant total is $80.3M reported pre-acquisition funding, labelled as acquisition funded with cash and equity; transaction terms were not disclosed. It is company-level capital or transaction value—not founder net worth.
Authentic Census / Fivetran Activations website evidence captured on 21 July 2026.
Census / Fivetran Activations founders and financing at a glance
| Field | Verified information |
|---|---|
| Founding team | Boris Jabes, Bradley Buda, Anton Vaynshtok and Sean Lynch |
| Current or documented roles | Boris Jabes: Co-founder and former CEO; Bradley Buda: Co-founder and former CISO; Anton Vaynshtok: Co-founder; Sean Lynch: Co-founder and former CPO |
| Company | Census / Fivetran Activations — getcensus.com |
| Founded | 2018 |
| Headquarters or operating scope | San Francisco, California, United States |
| Product category | Reverse ETL and governed data activation |
| Primary customer | Data, analytics, marketing, sales and customer-success teams |
| Latest financing milestone | Fivetran acquisition, 2025-05-01 |
| Total or transaction value | $80.3M reported pre-acquisition funding — acquisition funded with cash and equity; transaction terms were not disclosed |
| Public status | Privately held or part of an acquirer |
| Last verified | 21 July 2026 |
Who is Boris Jabes?
Boris Jabes is Co-founder and former CEO at Census / Fivetran Activations. Boris Jabes's role should be read in its current context: founder status is permanent, while executive responsibility can change as a company scales, lists publicly or is acquired.
Founder profile: Connect with Boris Jabes on LinkedIn.
Boris Jabes in the portrait published on his official personal site.
In the founding team, Boris Jabes contributed to the combination of product judgment, technical execution and go-to-market work behind Census / Fivetran Activations. The public evidence does not justify claims about private ownership, personal wealth or undisclosed internal responsibilities.
Who is Bradley Buda?
Bradley Buda is Co-founder and former CISO at Census / Fivetran Activations. Bradley Buda's role should be read in its current context: founder status is permanent, while executive responsibility can change as a company scales, lists publicly or is acquired.
Founder profile: Connect with Bradley Buda on LinkedIn.
Bradley Buda in his official Sequoia founder portrait.
In the founding team, Bradley Buda contributed to the combination of product judgment, technical execution and go-to-market work behind Census / Fivetran Activations. The public evidence does not justify claims about private ownership, personal wealth or undisclosed internal responsibilities.
Who is Anton Vaynshtok?
Anton Vaynshtok is Co-founder at Census / Fivetran Activations. Anton Vaynshtok's role should be read in its current context: founder status is permanent, while executive responsibility can change as a company scales, lists publicly or is acquired.
Founder profile: Connect with Anton Vaynshtok on LinkedIn.
Anton Vaynshtok in an attributed Signal founder and investor portrait.
In the founding team, Anton Vaynshtok contributed to the combination of product judgment, technical execution and go-to-market work behind Census / Fivetran Activations. The public evidence does not justify claims about private ownership, personal wealth or undisclosed internal responsibilities.
Who is Sean Lynch?
Sean Lynch is Co-founder and former CPO at Census / Fivetran Activations. Sean Lynch's role should be read in its current context: founder status is permanent, while executive responsibility can change as a company scales, lists publicly or is acquired.
Founder profile: Connect with Sean Lynch on LinkedIn.
Sean Lynch in his verified public GitHub profile portrait.
In the founding team, Sean Lynch contributed to the combination of product judgment, technical execution and go-to-market work behind Census / Fivetran Activations. The public evidence does not justify claims about private ownership, personal wealth or undisclosed internal responsibilities.
Why the founders built Census / Fivetran Activations
Jabes, Buda, Vaynshtok and Lynch founded Census to move modeled warehouse data back into the operational tools where teams take action. Their reverse-ETL approach preserved the warehouse as the source of truth while giving non-data teams controlled access to timely customer and business context.
This is documented company history plus editorial assessment. It does not establish private motivations beyond what the founders and company have said publicly.
What Census / Fivetran Activations does
Census technology now powers Fivetran Activations, which sends governed warehouse data to business applications and advertising destinations. Current capabilities include reverse ETL, audience building, identity and model activation, AI-enriched columns, observability and access controls within Fivetran’s broader data-movement platform.
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What makes the founder thesis distinctive?
The CSV lists Boris Jabes alone and labels Census Series B/C. First-party and investor sources identify four founders. Census was acquired by Fivetran in 2025 and is now presented as Fivetran Activations rather than a separate new-sale product.
Our assessment is that durable differentiation must show up in customer outcomes, workflow adoption, reliable data movement and lower operating cost—not only in feature count or AI branding.
Census / Fivetran Activations financing and transaction history
| Announcement date | Round or instrument | Amount | Lead or named participants | Reported use | Evidence status |
|---|---|---|---|---|---|
| June 2019 | Seed | $4.3M | SV Angel and investors | Build the initial data-activation product | Reported |
| May 2020 | Series A | $16M; $20.3M total | Andreessen Horowitz and investors | Scale reverse ETL and enterprise adoption | Reported |
| 9 February 2022 | Series B | $60M at $630M valuation; $80.3M total | Tiger Global with Insight Partners and existing investors | Expand product, hiring and category leadership | Company-confirmed round; total reported |
| 1 May 2025 | Fivetran acquisition | Terms undisclosed; cash and equity | Fivetran | Create an end-to-end governed data-movement and activation platform | Company-confirmed |
| — | Current qualified figure | $80.3M reported pre-acquisition funding | — | — | acquisition funded with cash and equity; transaction terms were not disclosed |
The headline uses Fivetran acquisition because it is the clearest recent milestone in the verified record. Different instruments are not silently combined: acquisition consideration, IPO proceeds, primary funding and secondary liquidity have different meanings.
What the latest milestone was intended to change
Public statements connect the milestone to some combination of product investment, AI capability, geographic expansion, hiring, acquisitions or shareholder liquidity. Those plans are attributed intentions, not proof that each outcome occurred. Evidence should include shipped capabilities, adoption, retention, unit economics and customer results after the transaction.
Founder and company timeline
| Period | Milestone |
|---|---|
| 2018 | Jabes, Buda, Vaynshtok and Lynch found Census. |
| 2019 | The company raises a $4.3M seed round. |
| 2020 | A $16M Series A brings reported funding to $20.3M. |
| February 2022 | Census raises a $60M Series B at a $630M valuation. |
| May 2025 | Fivetran announces its acquisition of Census. |
| 2025–2026 | Census capabilities are integrated and marketed as Fivetran Activations. |
The founders' public thesis
Across the available company history, the founders argue that customer data becomes valuable when operating teams can turn it into timely, coordinated action. The exact emphasis differs by company—category creation, accessibility, data ownership, real-time infrastructure or AI-assisted execution—but the test is similar: can a customer make better decisions without adding hidden complexity?
Strengths, risks and unresolved questions
Visible strengths
- A founding thesis attached to a recurring and measurable marketing workflow.
- Product history and financing evidence available from primary sources.
- A platform broad enough to influence data, orchestration and customer communication.
Material risks
- Activation can send sensitive or incorrect fields into many downstream systems, so contracts, lineage and field-level controls matter.
- Identity and audience workflows require consent, deletion, suppression and regional privacy compliance.
- The acquisition consideration was undisclosed; the $80.3M figure is reported financing, not sale proceeds.
Questions buyers and researchers should ask
- Which founder roles are current, and which describe historical service?
- How is incremental customer or revenue impact measured against a control?
- What data, consent, model and deliverability controls constrain automated action?
- Which transaction amounts were primary capital, secondary liquidity or acquisition consideration?
- What implementation resources are required before the platform produces reliable value?
Evidence to watch over the next 12 to 18 months
Watch for independently explainable retention and expansion, transparent AI evaluation, successful migrations, product delivery tied to the announced financing purpose and current executive-role disclosures. For public companies, filings provide a stronger operating signal than promotional customer counts alone. For private companies, future financing announcements should identify transaction composition clearly.
Frequently asked questions
Who founded Census / Fivetran Activations?
Census / Fivetran Activations was founded by Boris Jabes, Bradley Buda, Anton Vaynshtok and Sean Lynch.
What does Census / Fivetran Activations do?
Census / Fivetran Activations provides reverse etl and governed data activation capabilities for data, analytics, marketing, sales and customer-success teams.
What is Census / Fivetran Activations's latest financing milestone?
The latest milestone verified for this profile is Fivetran acquisition, dated 2025-05-01.
How much funding has Census / Fivetran Activations raised?
The qualified figure used here is $80.3M reported pre-acquisition funding. Its status is acquisition funded with cash and equity; transaction terms were not disclosed; it should not be interpreted as founder wealth.
What should buyers verify?
Buyers should test data integration, consent controls, measurement, implementation effort, support, exportability and the limits placed on automated or AI-generated actions.
Tolu S.
Associate Director
Evidence-led product reviews and founder profiles for search, marketing, authority, and AI visibility teams.
