Zerokai

Advisory

Architecture that won't need to be rebuilt in two years.

The most expensive engineering decision is the one made wrong in week one. We design your system architecture before you build — evaluating trade-offs, documenting the decisions, and giving you a foundation your team can build on confidently.

What you get

  • A written architecture design document: system overview, component design, data model, and API structure
  • Explicit trade-off documentation — why we chose this approach over the alternatives
  • Data model design with the relationships, constraints, and access patterns that matter for your product
  • Infrastructure and scaling plan: how the system grows from 100 users to 100,000
  • Security design: where authentication, authorisation, and data isolation live in the system
  • A 90-minute walkthrough with your engineering team before build begins

Right for you if ...

Not sure this is the right engagement? Book a free 30-min call and we will tell you honestly.

  • 01

    You are about to start building and want the architecture right before the first line of code

  • 02

    You have an existing system that needs significant redesign but is still in production

  • 03

    Your team is debating a major architecture decision and needs an experienced outside view

  • 04

    You are preparing a technical design for a fundraising process or enterprise sales conversation

What we cover

System design

The high-level view: how components communicate, what owns what data, where the boundaries are, and what the system looks like when it needs to scale. Designed for your actual load, not hypothetical Google-scale.

Data model design

The schema that underpins your product. Tables, relationships, constraints, indexes, and the access patterns your application actually needs — designed before code makes it expensive to change.

API design

RESTful, GraphQL, or event-driven — we design the API contracts between your system components before they're built, so integrations don't require constant renegotiation.

Infrastructure design

Where does the application run? How does it deploy? What does the dev-staging-production structure look like? Designed for your team's skills and your budget.

Security architecture

Authentication and authorisation design, secrets management, data isolation between tenants, and the security controls that need to be baked in from day one — not retrofitted later.

Migration design

If you have an existing system that needs redesigning, we design the migration path: how you get from A to B without shutting down production or losing data.

Engagement details

Architecture styles

MonolithModular monolithMicroservices (where appropriate)Event-drivenServerless

We design for any stack

Next.js / ReactLaravelRailsNode.jsGoPostgreSQLMongoDBAWS / GCPDocker / Kubernetes

How we work

01

Requirements session (Days 1–2)

We map the product requirements, business constraints, team capabilities, and technical context. Architecture without requirements is theory, not design.

02

Architecture draft (Days 3–6)

We produce the initial architecture: system design, data model, API structure, and infrastructure plan. Shared for your review with the trade-off rationale included.

03

Review and refinement (Days 7–9)

We work through your questions and incorporate feedback. Where we disagree with your preferences, we say so and explain why — you make the final call.

04

Engineering walkthrough (Days 10–14)

A 90-minute session with your engineering team. We walk through the design, answer implementation questions, and hand over a document the team can build from.

Right-fit packages

Fixed prices. No hidden fees.

Most popular

MVP Sprint

For founders building their first product

$4,9996 weeks

fixed scope · fixed price

  • Discovery & shaping
  • Design + full build
  • Production deploy + handoff
  • Source code + infra you own forever
  • 30-day post-launch fix guarantee

Architecture Audit

Got existing code? Start here.

$1,4991-2 weeks

written report + walkthrough

  • Codebase audit (security, performance, maintainability)
  • Infra & cost review
  • Prioritised fix list with effort estimates
  • 90-min walkthrough call
  • Optional pair-programming session

Common questions

Ready to ship?

Ready to scope your idea?

30 minutes. We tell you exactly what your MVP needs and what it will cost. No obligation, no pitch deck.

We take 2 new Sprint clients per month. If we're at capacity, we'll tell you on the call and offer a waitlist.