Stefan Kollenberg
Data Partnerships @ Clay
ClayHey 👋 I’m a Clay customer turned team member because I love the product so much! Before joining Clay I led client services for Volley, a lead generation agency and signed the first 15 customers for our AI email personalization tool.
More
Before Volley, I co-founded a workplace culture building software, closing our first 40 customers and getting us to $1M ARR.
GTM Index
- CLAYJOB
- Data Partnerships2Y 5M
Data Partnerships
Clay
Reach out if you think your product could add new & valuable use cases for Clay customers!
- GTM Eng5M
GTM Engineer
Clay
After using Clay as a customer for the past couple years, I’ve joined the team to help other people discover it’s power.
- SK CONSULTINGJOB
- Founder6Y 9M
Founder
SK Consulting
GTM & Sales Advisory for startups
- FUTURE OF ENGAGEMENTJOB
- Board Member4Y 11M
Board Member
Future of Engagement
- Community Lead1Y 11M
Community Lead
Future of Engagement
We want a Canada where the needs of the most vulnerable people are put first. To get there, we help underrepresented candidates with Canadian elections by providing them with campaign technology and expertise.
- VOLLEYJOB
- Client Success & GTM - Fou…1Y 1M
Client Success & GTM - Founding team
Volley
Our team of 35 BDRs was booking meetings at a rate of 4-6% by doing excellent research and high quality personalized email outreach. As the team scaled, we experienced first hand the limitations of existing sales technology, so we built our own platform to simplify the process of doing personalized outreach for BDRs.
- Client Success1Y 6M
Client Success
Volley
Scaled out BDR team from 5 to 35 reps exclusively focused on highly personalized email outreach.
- CRESCENDO DEIJOB
- Co-Founder: GTM & Sales Le…3Y 3M
Co-Founder: Go-To-Market & Sales Lead (Exited)
Crescendo DEI
Myself and an SDR took Crescendo from 0 to $1M+ in revenue 2 years post-launch, with A-list clients like ServiceNow, Indeed, and Conde Nast (Vogue, Wired Magazine, GQ). Crescendo is a software that uses curated content to help employees develop more inclusive attitudes and behaviors. Through Crescendo we've helped scale D&I programs at some of the largest technology companies in the world; grown a small agile team across North America; interviewed several hundred users to create studies that have been presented at Harvard; and helped over 40 000 employees across the world build more inclusive behaviors through an easy to use software inside of Slack. Learn more: http://crescendowork.com
- Co-Founder: Mktg, Sales & CS1Y 8M
Co-Founder: Marketing, Sales & CS
Crescendo DEI
- BRIZIJOB
- Mktg & Customer Success Le…1Y 7M
Marketing & Customer Success Lead, Founding Team
Brizi Inc.
Marketing, press and customer success for this sports-tech startup.
- FRONT OFFICE SPORTSJOB
- Feature Writer - Sports Te…1Y
Feature Writer - Sports Technology
Front Office Sports
Sports technology writer.
- HOCKEY-STOCKJOB
- Mktg Lead, Founding Team11M
Marketing Lead, Founding Team
Hockey-Stock
Founding employee focused on marketing.
- Job: Clay — Data Partnerships · 2024-05 – present · 2y 3mo — Reach out if you think your product could add new & valuable use cases for Clay customers!
- Job: Clay — GTM Engineer · 2024-01 – 2024-06 · 5 mo — After using Clay as a customer for the past couple years, I’ve joined the team to help other people discover it’s power.
- Job: SK Consulting — Founder · 2020 – present · 6y 7mo — GTM & Sales Advisory for startups
- Job: Future of Engagement — Board Member · 2021 – 2025 · 4y
- Job: Future of Engagement — Community Lead · 2021 – 2022 · 1y — We want a Canada where the needs of the most vulnerable people are put first. To get there, we help underrepresented candidates with Canadian elections by providing them with campaign technology and expertise.
- Job: Volley — Client Success & GTM - Founding team · 2022-12 – 2024-01 · 1y 1mo — Our team of 35 BDRs was booking meetings at a rate of 4-6% by doing excellent research and high quality personalized email outreach. As the team scaled, we experienced first hand the limitations of existing sales technology, so we built our own platform to simplify the process of doing personalized outreach for BDRs.
- Job: Volley — Client Success · 2021-06 – 2022-12 · 1y 6mo — Scaled out BDR team from 5 to 35 reps exclusively focused on highly personalized email outreach.
- Job: Crescendo DEI — Co-Founder: Go-To-Market & Sales Lead (Exited) · 2017-12 – 2021-03 · 3y 3mo — Myself and an SDR took Crescendo from 0 to $1M+ in revenue 2 years post-launch, with A-list clients like ServiceNow, Indeed, and Conde Nast (Vogue, Wired Magazine, GQ). Crescendo is a software that uses curated content to help employees develop more inclusive attitudes and behaviors. Through Crescendo we've helped scale D&I programs at some of the largest technology companies in the world; grown a small agile team across North America; interviewed several hundred users to create studies that have been presented at Harvard; and helped over 40 000 employees across the world build more inclusive behaviors through an easy to use software inside of Slack. Learn more: http://crescendowork.com
- Job: Crescendo DEI — Co-Founder: Marketing, Sales & CS · 2017-12 – 2019-08 · 1y 8mo
- Job: Brizi Inc. — Marketing & Customer Success Lead, Founding Team · 2016-02 – 2017-09 · 1y 7mo — Marketing, press and customer success for this sports-tech startup.
- Job: Front Office Sports — Feature Writer - Sports Technology · 2016-05 – 2017-05 · 1y — Sports technology writer.
- Job: Hockey-Stock — Marketing Lead, Founding Team · 2015-03 – 2016-02 · 11 mo — Founding employee focused on marketing.
- School: Toronto Metropolitan University — Social Change Leadership, Political Science and Government
- School: Lund University — Greening the Economy: Sustainable Cities, Economics
- School: Toronto Metropolitan University — Marketing
Skills
Playbooks
All playbooks →No playbooks indexed for this profile yet.
More GTM Engineers
Browse all →- Yash Tekriwal 🤔the 1st GTM Engineer & “the AI Professor”Clay
ex-Volley
- Omesiri Kabaide 🧲Senior GTM Engineer & Clay Club Host | I build outbound & revenue systems that run themselves.
C17 Lab
ex-Optisoft Technology Company Ltd
- Prosper OkechukwuGTM Engineer | Building AI-Native Revenue Systems That Compound | Clay Creator | Outbound × Automation × RevOps
Growth Today
ex-Vision Pictures
- Andrew MewbornFounder @ Distribute.so | GTM @ Clay
DistributeTex-Taplio
