From the Founder’s Keyboard

How Our 'Dual-Mode' Architecture Landed the Ministry of Defense (And Passed a Due Diligence with Flying Colors)

A story of turning constraints into clarity: the journey to a SaaS architecture that scaled with defense-grade resilience and passed due diligence with flying colors during a successful exit.

Startup Engineeringcloud-agnosticcloud-nativeSaaS architecturezero-to-one buildtechnical-leadership
K

Krunal Sabnis

September 2, 2025

3 min read
#Startup Engineering#cloud-agnostic#cloud-native#SaaS architecture#zero-to-one build#technical-leadership

The Real Tension

You’ve got product-market fit. Enterprise clients are on the hook. But your MVP architecture is groaning under the weight of your own success, and your engineering team is trapped in a cycle of firefighting instead of innovating. Every new client feels like a risk, not a win. That was the situation at Qualibrate, an SAP automation and no-code testing platform trusted by high-stakes clients like the Ministry of Defense (Netherlands) and Bell Helicopter (US Defense).

The first cloud version worked, but it was a monolith—fast to ship, hard to scale, and a “ticking time bomb” as the product owner put it.

My mandate was to solve three business problems with one architecture:

➡️ Achieve SaaS velocity to outpace competitors.
➡️ Support air-gapped, on-prem clients to win highly-regulated contracts.
➡️ Do it with a lean team by eliminating operational drag and manual work.


The Blueprint: Three Decisions That Drove the Win

Great architecture isn't about chasing new tech; it's about making deliberate decisions that deliver business results. Here are the three core principles that became our blueprint for success.

Instead of just chasing new tech, I focused on three principles that would deliver business results:

  • Eliminate Firefighting with Self-Serve Tooling: The old system required constant support for user management and onboarding. The new architecture baked this into the product. The result: I designed the architecture to be self-serve, which freed up nearly 30% of the customer success team's time and let our engineers focus on value, not support tickets.

  • Innovate, Don't Reinvent: Users needed BI dashboards, a feature that would typically cost a fortune to build. Instead of starting from scratch, we integrated open-source Cube.js, delivering a Power BI-like experience at zero extra cost to our clients. This wasn't just a feature; it was a competitive advantage that increased the product's value during the acquisition.

  • One Codebase, Two Markets: I made the strategic decision to build a single, reusable framework instead of two separate stacks. This was the key to maintaining one codebase, which drastically reduced complexity and allowed our tiny team to serve both fast-moving SaaS customers and security-conscious defense clients without doubling our workload.

The Lesson for Your Business

Great architecture isn't about elegant code;it's about creating clarity and enabling growth under constraints.

The decision to rewrite Qualibrate's platform wasn't a technical exercise; it was a business strategy that led directly to higher revenue, a leaner team, and a successful exit.

That same battle-tested philosophy now powers Zeoxia. We don't just build software. We apply proven frameworks—from the Fulcrum Framework to the Transformation and Scale Mandates —to turn your technical bottlenecks into your biggest competitive advantages.


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