Head of Customer Success • Technical Account Manager • Enterprise Expansion

>> HOME

SUMMARY

Head of Customer Success operating as a hands-on Technical Account Manager, owning a ~$400K enterprise book and driving multi-product adoption, technical onboarding, and revenue expansion without relying on engineering escalation.

I solve customer problems end-to-end - support, onboarding, integrations, technical troubleshooting, workflow design, and expansion all sit with me. I thrive in fast-paced, product-led environments where autonomy, async work, and high impact matter more than process.

Recently deep into PostHog: feature flags, cohorts, funnels, SQL insights, session replays, and experimentation. I even built a pineapple slicing game to test instrumentation - now my family is addicted, and it even got me a lovely comment from a PostHog person on Reddit.

Reddit 3 hours ago

adboio: "this is sick lmao DM me for a posthog merch code if u want!"

CORE STRENGTHS

  • Technical Account Management
  • Enterprise Expansion ($400K+ book)
  • Multi-Product Adoption
  • API / SSO / OAuth Integrations
  • Jira / Azure DevOps Integrations
  • PostHog Analytics & Experimentation
  • Automation & Workflow Optimization
  • Customer Value Realization & ROI
  • Technical Troubleshooting
  • Product Influence & Feedback
  • Async, Autonomous Execution

EXPERIENCE

MARKER.IO 2021 - Present | Remote / Brussels
Head of Customer Success

Lead Support, Success, and Sales Engineering for 1,600+ customers. Handle every ticket, demo, and ~97% of technical issues myself. If a problem isn't 1000% reproducible, I fix it before it reaches engineering.

Enterprise Ownership (~$400K ARR):
  • Scaled one enterprise account from mid-5 to high-6 figures ARR
  • Grew another from low-5 to high-5/low-6 via structured adoption programs
  • Expanded a global organization across multiple international business units
  • Built an agency-to-enterprise referral motion generating multiple high-value deals
Technical Ownership:
  • SSO / OAuth, Jira & Azure DevOps
  • API + metadata schema design
  • Automated reproduction workflows (cut dev time ~80%)
PLG & Analytics:
  • Built fully instrumented PostHog projects using feature flags, cohorts, funnels, session replay, SQL, and AI
TECHNOLOGIES:
SSO/OAuth Jira API Azure DevOps PostHog REST APIs Feature Flags SQL Session Replay
UNIVERSITY COLLEGE CORK 2015 - 2021 | Cork
Senior IT Manager

Led a small team managing mission-critical university systems. Delivered high-stakes cross-departmental technical projects and a nationally recognized testing center.

UNIVERSITY COLLEGE CORK 2005 - 2015 | Cork
Senior IT Project Manager

Delivered software and infrastructure used by thousands. Coordinated teams, improved reliability, and ensured adoption.

FLEX 1998 - 2005 | Cork
Enterprise Account Manager

Owned enterprise accounts end-to-end. Achieved 95% retention and ~25% revenue growth. Mentored a team of 4.

TECHNICAL SKILLS

  • PostHog (flags, funnels, SQL)
  • APIs, OAuth, SSO
  • Jira, Azure DevOps
  • SQL, automation workflows

EDUCATION

  • MSc Data Science & Analytics (UCC)
  • BSc Computer Science (UCC)
  • Diploma: Leadership & Management
  • Proj. Mgmt Professional (CMIT)

PERSONAL //

High ownership, low ego, happiest solving real technical problems and helping customers succeed.