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Software Architecture Consulting for Teams Making a Big Technical Decision

Some decisions are expensive to get wrong and hard to undo once code is written. Our software architecture consulting gives you an independent, senior-level opinion before you commit: an architecture review, a technical due diligence report, or a system design consulting session focused on the one decision in front of you. This is advisory work only. We review, we document, we recommend. If you later want us to build it, that's a separate conversation.

Software architecture consulting services we provide

01
Architecture review & health checks
A structured assessment of an existing system's design, covering scalability, maintainability, and technical risk, with specific findings rather than general impressions.
02
Technical due diligence for investors
An independent report on the target company's technology, written for people who need to make a funding or acquisition decision, not for the engineering team.
03
Build-vs-buy & monolith-vs-microservices guidance
A clear recommendation grounded in your actual team size, growth plans, and operational maturity, not a default answer.
04
Scalability & multi-tenant design review
An evaluation of whether your current design can support more users, more customers, or more regions without a rewrite.
05
Technology stack evaluation
An honest assessment of whether your current languages, frameworks, and infrastructure choices still fit where the product is headed.
06
Documented recommendations & roadmap
A written report with prioritized findings and a practical sequence for addressing them, so the decision doesn't live only in a meeting.

Our architecture consulting process

  1. 01

    Initial discovery call

    We talk through what's prompting the review: a pending decision, an investment, or recurring problems, and what a useful outcome looks like for you.

  2. 02

    Codebase & system review

    We look at the actual architecture, infrastructure, and code, not just the diagrams and documentation describing it.

  3. 03

    Stakeholder interviews

    We talk to the engineers, founders, or product owners who know where the system's real friction points are.

  4. 04

    Findings & recommendations report

    You get a written report: what we found, what it means for your decision, and what we'd do about it, ranked by priority.

  5. 05

    Review call

    We walk through the report together and answer questions before anyone acts on it.

  6. 06

    Optional follow-up support

    If you decide to act on the recommendations, we can help plan or build the next phase, as a separate, scoped engagement.

When companies come to us for architecture consulting

We're about to make a big architecture decision and want a second opinion. Monolith vs. microservices, multi-tenant vs. single-tenant, build vs. buy: these choices are hard to reverse once implemented.

An investor needs technical due diligence before funding. Before a round closes or an acquisition goes through, someone has to answer whether the technology is actually worth what it's valued at.

Scaling problems keep recurring and the root cause is unclear. Performance issues, deployment pain, or recurring outages often trace back to an architecture decision made years earlier.

We're deciding whether to rebuild or extend an existing system. Rebuilding is expensive and risky, extending a flawed foundation has its own cost. We help you weigh both honestly.

Why architecture decisions are worth reviewing early

On the Zeekr DMS platform, an early architecture decision led to a single containerized service sharing a core across dealers, configured per location instead of deployed separately for each one. It's the kind of choice that's cheap to make correctly upfront and expensive to unwind once dozens of dealers depend on it.

A design flaw gets more expensive the later it's caught

Does it really matter when a design flaw is caught? A lot. The relative cost to fix a defect rises sharply the later it's found, which is why architecture decisions are worth reviewing before code is written.

1x
5x
10x
100x
DesignCodingTestingProduction

Relative cost to fix a defect by the phase in which it's caught, the 1-10-100 rule. Source: ContextQA, Cost of Defects in Software Testing

Software project success rates have stalled for decades

Have software project outcomes actually improved with better tools and methodologies? Barely. The share of projects delivered on time, on budget, and to scope has stayed roughly flat since the early 2000s.

16%
29%
37%
31%
1994200420122020

Share of IT projects rated successful, Standish Group CHAOS Report. Source: Standish Group CHAOS Report

Frequently asked questions

What is software architecture consulting and how is it different from custom development?+

Software architecture consulting is advisory work: we review your system or plans and give you a written recommendation. Custom software development is us actually building the system. Many clients start with a review and only later, if at all, ask us to build.

When should a company get a technical due diligence review before an acquisition or investment?+

Ideally before terms are finalized. A technical due diligence report can surface risks in the target's architecture, code quality, or scalability that affect valuation or deal terms.

How long does an architecture review typically take?+

It depends on system size and scope, but most reviews run one to three weeks from the discovery call to the final report.

Do you need access to our full codebase to do a review?+

Not always. A high-level architecture review can work from documentation and interviews, but a technical due diligence report or a detailed health check generally requires codebase access to be credible.

Can you help us decide between rebuilding and extending an existing system?+

Yes, this is one of the most common reasons companies come to us. We look at the actual state of the system and your goals, then give a direct recommendation with the tradeoffs laid out.

What do we get at the end of the engagement?+

A written report with our findings, a clear recommendation on your specific question, and a prioritized list of next steps. Nothing about it commits you to hiring us for implementation.

Get an independent read on your architecture

Book a discovery call to talk through the decision you're facing and whether a review makes sense.

  • Web Development

    Frontend, backend, CMS, and API work for production web platforms.

  • Mobile Development

    Native iOS/Android and cross-platform apps built for real users.

  • Custom Software Development

    Custom CRM, dealer management, and business software that runs real operations.

  • AI & Automation

    Automation and applied data/AI features integrated into real products.

  • SEO, AEO & GEO Optimization

    Technical SEO, structured data, and AI answer engine optimization built into your site.

  • MVP Development

    Fast, senior-built MVPs that stay solid enough to become the full product.

Shall we discuss your idea?
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Our offices

Lamana St. 18, 49000 Dnipro, Ukraine

C. de Bailén, 41, Centro, 28005 Madrid, Spain — ILab

Kamelia 47, 8240 Sunny Beach, Bulgaria — R&D office

Contacts

sales@leetsoft.dev
+380 73 758 17 72
+34 663 00 35 61