XenneX/LLC
/ services/architecture advisory

Senior eyes on the decisions
that matter.

The most expensive engineering mistakes aren't bugs — they're architectural decisions made under pressure without enough information. We review what you have, identify where the risk is, and give you a written plan you can act on.

$4k – $65k depending on scope·4–8 weeks typical

/ what's included

What we cover.

  • Architecture and code review
  • Written technical roadmap with prioritized tradeoffs
  • System and data model analysis
  • Technology selection guidance
  • Security and compliance review
  • Async availability throughout the engagement

/ deliverables

What you leave with.

  • Architecture review document
  • Prioritized technical roadmap
  • Technology recommendation report
  • Follow-up Q&A session

/ process

How we approach it.

01

Discovery & scope

We agree on what we're reviewing, what questions we're answering, and what the deliverable looks like. Scoped engagements work better than open-ended ones.

02

Architecture review

We read the code, the infrastructure, the data model, and whatever documentation exists. We ask questions. We find the gaps between what you think the system does and what it actually does.

03

Risk assessment

We identify what's most likely to cause a production incident, a scaling failure, or a painful rewrite — and rank by severity and probability, not gut feeling.

04

Written roadmap

The deliverable: a prioritized technical roadmap with specific recommendations, tradeoffs explained, and sequencing rationale. Written for your team, not for a client presentation.

05

Follow-up & Q&A

Async availability throughout the engagement. We don't write a document and disappear. Questions surface after the review — we're there for them.

/ stack

Tools we reach for in architecture advisory engagements.

AWSGCPAzurePostgreSQLMongoDBRedisKafkaDockerKubernetesTerraformNode.jsPythonGoTypeScript

/ fit

Right fit.

This engagement works well when…

  • You're about to make a major architectural decision and want validation before committing
  • You've grown fast and the codebase is starting to slow you down
  • You're inheriting a system and need an honest picture of what you're dealing with

Might not be the right fit if…

  • You need someone to implement the work, not review it — jump straight to a build engagement
  • You're looking for a rubber stamp rather than an honest critique — we'll tell you things you may not want to hear

/ faq

Common questions.

What does an architecture review actually look at?+

Codebase structure, data models and query patterns, infrastructure topology, deployment pipeline, observability setup, dependency choices, and security surface area. We look for both acute risks and slow-burning problems.

Do you need access to our production systems?+

We need read access to the codebase and enough system context to understand the architecture. We don't need production database access or live system credentials.

How is this different from hiring a consultant for a day?+

A day is enough to identify obvious problems. Our engagements run 4–8 weeks so we can go deep, ask follow-up questions as we learn more, and produce a roadmap that reflects the real complexity — not a surface-level impression.

What if we don't have much documentation?+

Good — most companies don't. We work from the code and from conversations with your team. If documentation is sparse, that usually becomes part of the roadmap.

Can you help implement the recommendations afterward?+

Yes. Many advisory engagements extend into implementation work. We're transparent about where that line is and never create artificial dependency.

Is this engagement confidential?+

Yes. We're happy to sign an NDA before the engagement starts.

/ who it's for

Common clients.

CTOs and engineering leads who want a second opinion
Companies facing a major platform decision
Teams inheriting a codebase they didn't build

Have a project in mind?

Get a ballpark estimate in under 5 minutes — no forms, no sales calls.