About us

Two partners. Two disciplines. One team.

Day Two Advisors is a husband-and-wife partnership based in Carlsbad, California. Since 2024 we've helped tech companies with the technology and finance work that comes after the idea.

Clint leads technology. Jacquie leads finance. Together, we give our clients the kind of joined-up executive perspective most companies only get once they've hired a full leadership team.

Clint Nelissen

Clint Nelissen

Partner · Technology

LinkedIn profile

Twenty-plus years building software, cloud platforms and the engineering teams behind them, from writing the code to running global infrastructure.

Clint leads Day Two's technology practice. He has worked at every level of the stack, from writing production code to running global cloud infrastructure, and from building engineering teams to setting technology strategy at the executive level.

He helps clients design and modernize cloud-native platforms, establish DevOps and CI/CD practices, build internal developer platforms for engineering and data teams, and put sound security and identity controls in place, always with an eye on cost and scalability. For acquirers, he brings the same depth to technical due diligence, assessing architecture, technical debt, security and the strength of the engineering team.

AREAS OF EXPERTISE

  • Cloud-native architecture & Kubernetes
  • DevOps, CI/CD & platform engineering
  • Software engineering leadership
  • IT security, SSO & identity
  • Infrastructure cost & scalability
  • Engineering hiring & team building
  • AI transformation & enablement
  • Technical due diligence
Jacquie Nelissen

Jacquie Nelissen, CPA, MBA

Partner · Finance

LinkedIn profile

A CPA and finance leader who turns financials into strategy, from fast-moving fintech to national, multi-entity businesses.

Jacquie leads Day Two's finance practice. She focuses on the strategic side of finance: FP&A, budgeting and forecasting, runway and scenario planning, fundraising readiness, and the controls and systems a growing company needs.

She also leads ERP implementations and integrations, automates reporting, and uses technology, data and AI to turn financials into insight leaders can act on. For acquirers, she leads financial due diligence, validating earnings, controls, forecasts and tax exposure so you know the numbers will hold up.

AREAS OF EXPERTISE

  • Runway & scenario planning
  • FP&A, budgeting & forecasting
  • Audit readiness & controls
  • ERP transformation & integrations
  • Reporting automation
  • Fundraising & investor readiness
  • Fractional CFO & controller
  • Financial due diligence

Licensed CPA, California · MBA

Why both

Your architecture and your P&L are the same conversation.

Decisions with both lenses

Cloud spend, tooling and hiring are financial decisions. We weigh the technical and financial sides together, not in separate meetings.

Senior on every engagement

You work directly with Clint and Jacquie, the people with the experience, from the first call onward.

Built to hand off

We document, build process and help you hire, so your company gets stronger rather than more dependent on us.

Let's talk about what comes after day one.

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