The Holy Code - Desarrollo Web México

Qantus: precision quoting in minutes

How I designed Qantus to move from slow and error-prone quotes to a fast flow with measurable outcomes.

Mauro Sánchez By Mauro Sánchez
5 min read
#qantus #saas #pricing-engine #b2b

In many sales teams, quoting is still slow, manual, and error-prone.
Qantus was built to change that.

The problem

  • Scattered pricing variables.
  • Human errors when calculating fees.
  • Delays in proposal generation.
  • Lower deal-closing speed.

My role

Strategic definition, architecture design, and full-stack technical execution.

What I built

  • A configurable quoting rules engine.
  • Comparative scenarios for faster decisions.
  • Ready-to-send proposal templates.
  • An optimized flow that converts in minutes.

Impact

  • ±0.3% average error margin.
  • 120+ connected branches.
  • Average conversion in around 3 minutes.

Key lesson

When a commercial flow is mission-critical, the best UX is not the prettiest one.
It’s the one that removes friction, reduces ambiguity, and accelerates decisions.

Live project: qantus.io

Deep dive

Qantus was designed as a reliable commercial engine: reduce errors, accelerate closing, and standardize pricing decisions in real operations.

Solution architecture

  • Configurable rules model by segment and quote type.
  • Validation layer to detect inconsistencies before proposal output.
  • Rule version traceability for commercial auditing.

Key decisions

  • Prioritize precision before early customization.
  • Design comparison flows to speed up sales decisions.
  • Standardize output templates to reduce operational friction.

Operational lessons

  • Most impact came from reducing ambiguity in data inputs.
  • Adoption increased when manual steps were removed.
  • Error tracking by segment improved rules iteratively.

Sources and context

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