Panos Sisamos
Creative GTM is the only real moat 🧠
GTM strategies fail due to semantic drift. The message loses its meaning as it scales.
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I founded Relevance to fix this. We partner with Seed to Series A startups to replace growth hacks with a stable GTM foundations. When creativity becomes a system, it becomes a moat. Let's build.
GTM Index
- RELEVANCE.JOB
- Founder1Y 9M
Founder
Relevance.
B2B GTM & Outbound Studio. We design targeted pipeline for B2B SaaS founders, seed to Series B. Volume outbound is a game that's already lost. Reply rates keep falling and AI SDRs decay fast. We build precision instead: every account chosen on purpose, every message earning its place. One offer. We architect your ICP, build a hyper-targeted list, and run signal-based outbound with semi-autonomous agents under a human operator. Every reply writes back to a context graph, so your GTM sharpens every month instead of decaying. Semi-autonomous agents, not autopilot AI SDRs. A human is always in the loop. We take on a limited number of founders at a time. That's the point. Relevant by design…
- CLAYJOB
- Creator / Expert3Y
Creator / Expert
Clay
I leverage Clay for revenue operations and complex list-building workflows. If you need help setting up Clay or building a workflow - get in touch.
- VARIOUS STARTUPSJOB
- Fractional GTM Eng2Y 2M
Fractional GTM Engineer
Various Startups
Building GTM systems for seed to series B startups in Y-combinator, Techstars, Antler and Entrepreneur-first
- LEMLISTJOB
- Certified Agency Partner1Y 5M
Certified Agency Partner
lemlist
- REVGENIUSJOB
- Member3Y
Member
RevGenius
RevGenius is a trusted space where curious revenue professionals are collaborating on the future of B2B GTM
- MIDBOUNDJOB
- GTM Advisor2Y
GTM Advisor
Midbound
Website visitor identification (person-level) and analytics tool with the highest match rates in the industry.
- SALESCAPTAINJOB
- Head of Growth1Y 2M
Head of Growth
SalesCaptain
SalesCaptain is a UK-based Outbound Agency, building high-converting outbound sales systems for B2B SaaS and Service Businesses.
- RENDERO.COMJOB
- Growth Consultant7M
Growth Consultant
rendero.com
Laid the foundations for the company’s new 3D and AR solution
- DIALECTICAJOB
- Consulting EMEA2M
Consulting EMEA
Dialectica
My first and last corporate experience.
- SLOPE HEALTHJOB
- Growth Lead6M
Growth Lead
Slope Health
A health tech startup on a mission to battle inactivity. Short but amazing journey with people I respect. Tough market - never found PMF.
- Job: Midbound — GTM Advisor · 2024-06 – 2026-06 · 2y — Website visitor identification (person-level) and analytics tool with the highest match rates in the industry.
- Job: Relevance. — Founder · 2025-01 – present · 1y 7mo — B2B GTM & Outbound Studio. We design targeted pipeline for B2B SaaS founders, seed to Series B. Volume outbound is a game that's already lost. Reply rates keep falling and AI SDRs decay fast. We build precision instead: every account chosen on purpose, every message earning its place. One offer. We architect your ICP, build a hyper-targeted list, and run signal-based outbound with semi-autonomous agents under a human operator. Every reply writes back to a context graph, so your GTM sharpens every month instead of decaying. Semi-autonomous agents, not autopilot AI SDRs. A human is always in the loop. We take on a limited number of founders at a time. That's the point. Relevant by design…
- Job: Clay — Creator / Expert · 2023-10 – present · 2y 10mo — I leverage Clay for revenue operations and complex list-building workflows. If you need help setting up Clay or building a workflow - get in touch.
- Job: SalesCaptain — Head of Growth · 2023-09 – 2024-11 · 1y 2mo — SalesCaptain is a UK-based Outbound Agency, building high-converting outbound sales systems for B2B SaaS and Service Businesses.
- Job: rendero.com — Growth Consultant · 2024-01 – 2024-08 · 7 mo — Laid the foundations for the company’s new 3D and AR solution
- Job: Dialectica — Consulting EMEA · 2023-06 – 2023-08 · 2 mo — My first and last corporate experience.
- Job: Slope Health — Growth Lead · 2022-09 – 2023-03 · 6 mo — A health tech startup on a mission to battle inactivity. Short but amazing journey with people I respect. Tough market - never found PMF.
- Job: Various Startups — Fractional GTM Engineer · 2024-08 – present · 2y — Building GTM systems for seed to series B startups in Y-combinator, Techstars, Antler and Entrepreneur-first
- Job: lemlist — Certified Agency Partner · 2025-05 – present · 1y 3mo
- Job: RevGenius — Member · 2023-10 – present · 2y 10mo — RevGenius is a trusted space where curious revenue professionals are collaborating on the future of B2B GTM
Skills
Playbooks
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Browse all →- Sotiris Gianniris21yo founding GTM Engineer @Relevance. | clients backed by A16z, YCombinator, Google, TechStars, Antler, 500 Global, PlugnPlay, General Catalyst, Afore Capital etc.
Relevance.
ex-AIESEC in Greece
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