MarkCMO designs and builds custom software for owner-led businesses: CRMs, client portals, quoting and order systems, payment flows, booking, internal tools and the integrations between them. Mark Gabrielli architects each system and builds it on modern cloud infrastructure, scoped in writing, owned by you, and tied to how the business actually makes money.
Most small companies should not write software. If an off-the-shelf tool does the job at a fair price, Mark will tell you to buy it and spend the money on growth. Custom software earns its place in three situations. The first is when the way you sell or deliver is genuinely different, so every packaged tool forces the team into workarounds and spreadsheets. The second is when the business runs on four or five subscriptions that do not talk to each other, and somebody spends hours a week copying data between them. The third is when a process that makes money, such as quoting, intake or order handling, lives in one person's head and cannot grow without them.
In each case the goal is the same: a small, dependable system that removes a bottleneck, that the team understands, and that you own outright. Not a platform for its own sake.
Every engagement starts with a map of the current systems: what each tool does, where data lives, who touches it, what it costs, and where it breaks. From that comes a short written architecture, the target state and the order to get there, with the cheapest path that works. For many clients this document alone saves more than it costs, because it shows which subscriptions to cancel.
A CRM shaped around your actual sales process, with the stages, fields and reminders your team uses and nothing else. Mark runs his own businesses on a custom CRM that logs every deal, proposal and call transcript in one database, so the pattern is proven. When HubSpot or a similar product fits, he configures that instead.
Secure areas where clients log in to see documents, status, invoices or deliverables, and where members manage profiles, listings or subscriptions. This includes account creation, permissions, password reset and audit logs, built so a client can only ever see their own records.
For firms that quote from catalogs, part numbers or rate cards, a quoting tool that turns a request into a priced, reviewable quote, then into an order and an invoice. Mark built this pattern for aerospacesourcing.com, a request for quote to quote to purchase order to invoice pipeline, and for an ecommerce business he owns, where incoming quote requests are matched against part numbers with the reasoning shown and anything bespoke is sent to a person instead of guessed.
Checkout, subscriptions, deposits and refunds integrated with a payment processor such as Square or Stripe, including the webhooks that keep your records in step with the processor. Mark has built Square subscription checkout for ButcherBud and order and refund handling for his own store, including the edge cases that cost real money when they go wrong, such as a refund issued from the processor's dashboard that the system never hears about.
Booking flows that live on your own domain, check real availability, send confirmations and reminders, and log every booking into the CRM. The booking popup on this site runs on a scheduler Mark built, which replaced a third-party booking widget.
Fast, accessible websites and web applications served from the edge, with forms, search, structured data and analytics wired correctly from the start. Mark operates more than 40 live sites this way on Cloudflare, using Workers for server code, D1 databases and R2 storage, so a new site starts from a tested foundation rather than a blank page.
Connections between the tools you keep: CRM to email, forms to CRM, payment processor to accounting, inbound email to records. One example from Mark's own operations is an email worker that receives supplier documents and tracking notices, files each one against the right order and forwards a copy to a person, with no manual sorting.
Software is never finished. Every system Mark builds ships with backups, error alerts and scheduled checks that confirm the thing actually works in production, not just that the server is up. That last point matters: a page can return a healthy status while the form on it is silently broken, so the checks exercise the real path a customer takes.
Mark favors a small, dependable stack over fashionable complexity. Most systems run on Cloudflare Workers with D1 (SQLite) databases, R2 object storage and Durable Objects where strict consistency is needed, which keeps hosting costs low and pages fast worldwide. Where a client already runs on another platform, such as Supabase, Postgres, Netlify or a specific CRM, Mark works within it rather than forcing a migration. Modern AI-assisted engineering is used throughout, which shortens build time, and every change is still reviewed, tested and logged by a person who answers for it.
| Option | Good for | Watch out for |
|---|---|---|
| Off-the-shelf software | Standard processes, quick start, low upfront cost | Per-seat fees that grow with you, workarounds when your process differs |
| No-code tools | Prototypes and simple internal workflows | Limits on logic and data, fragile at scale, hard to audit |
| Development agency | Large builds with a dedicated team | Distance from the business goal, change orders, handoffs between people |
| MarkCMO | Focused systems tied to revenue, built by the person who also owns the growth plan | One senior builder, so very large multi-team programs are better served by an agency |
Because the same person leads marketing and builds the systems, software decisions are made against the growth plan. A new service page and the form behind it ship together. The CRM stages match the sales process the fractional CMO role designed. An operations fix found in a fractional COO review becomes a tool the following week. Security is designed in from the start rather than added later; see cybersecurity. Repetitive steps inside the new system can be handed to AI automation. For a longer technology leadership role, see fractional CTO, and for examples of what Mark has shipped, browse systems and apps.
Pricing. Standalone builds are scoped and priced in writing before any work starts. When software is part of an ongoing engagement, it runs inside the monthly fee. Most owner-led firms start with a one-time foundation fee of $4,500 to $15,000, which covers the first month of work, then $3,000 to $9,000 a month, month to month. Larger scopes are priced on the call; the full published range is $2,500 to $50,000 a month.
Business systems for owner-led companies: CRMs and pipeline tools, client portals and member areas, quoting, order and invoicing systems, payment and subscription flows, booking and scheduling, websites and web applications, and the integrations that connect existing tools. The focus is software that removes a bottleneck in how the business sells or delivers, not consumer apps or games.
You do. Code repositories, cloud accounts, domains, databases and credentials are set up in your name or transferred to you at handover, with plain-language documentation. You can keep Mark for maintenance, move the system to another developer or bring it in house, and nothing is held back if the engagement ends.
Standalone builds are scoped and priced in writing before work starts, based on what will be built and how it will be tested. When software is part of an ongoing engagement, it runs inside the monthly fee: most owner-led firms pay a $4,500 to $15,000 foundation fee covering month one, then $3,000 to $9,000 a month.
Most systems run on Cloudflare Workers with D1 databases, R2 storage and Durable Objects where strict consistency matters, which keeps hosting cheap and fast. Mark also works within existing platforms such as Supabase, Postgres, Netlify, HubSpot or Square instead of forcing a migration. The choice is driven by cost, reliability and who will maintain it.
Yes, AI-assisted engineering is part of how Mark works, and it shortens build times considerably. Every change is still reviewed, tested end to end and logged by Mark, who is accountable for it. AI speeds up the typing; it does not replace architecture, testing or judgment about what should be built.
Often, yes. If a packaged product fits your process at a fair price, buying is usually cheaper and faster, and Mark will recommend it. Custom software makes sense when your process is genuinely different, when several tools need to work as one, or when a revenue process depends on one person and cannot grow without a system behind it.
MarkCMO provides the strategy and the roadmap, and then delivers it across three tiers, so you get direction and execution from one team instead of handing a deck to someone else to build.
Fractional CMO and COO leadership: strategy, positioning, go-to-market, and the roadmap that sets the direction.
Running the function day to day: managing teams, vendors, budgets, and the operating cadence that keeps the plan on track.
Hands-on delivery: marketing execution, software development, tech-stack build and integration, plus finance and operations support, everything a business needs to scale.
From tech to marketing to finance, strategy through execution, MarkCMO can lead it, manage it, and build it.
Book a free 30-minute call with Mark Gabrielli. Describe the bottleneck and you will get a straight answer on whether to buy, build or leave it alone, and what each option would cost.
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