Saúl da Silva BarrosCTO @ 360SolvedLisbonFractional CTO

I help companies and founders turn their operations into technology solutions that work.

Senior judgment, startup speed, without startup headcount. I run delivery like a small team, orchestrating AI agents for coding, testing and ops, and I own every decision from the cloud bill to the roadmap.

Let's talkSee services
10K+bookings served by the SaaS I run as CTO
−80%dispatch time after a cloud migration for 200+ users
50+business processes automated at an assistance group
15+years shipping infrastructure, data and software

Where businesses get stuck

The symptoms are always the same.

One person understands the whole system

If that developer or that agency leaves, nobody can tell you what you actually own.

Every feature takes a month

And nobody can explain why, so you stop asking and start accepting.

The cloud bill grows faster than revenue

Servers waiting for traffic that never comes, paid every month.

Nobody can tell you if it is secure

Until a client, an investor or an auditor asks, and the answer is a shrug.

The agency stopped answering

The MVP got shipped, the invoices got paid, and now every change is a new quote.

You cannot judge the technical plan

You are signing off on architecture, hires and tools with no one on your side of the table.

None of these is a people problem. They are what happens when a business grows faster than the system underneath it.

Services

Clear offers. One person accountable.

Five ways to work with me. Each one has a defined scope, a start date and a single point of contact: me. I take on a few engagements at a time, so each one gets my direct attention.

01

Fractional CTO

Part-time technical leadership for a company that is not ready for a full-time one: roadmap, architecture, hiring, vendors and security.

Monthly

02

MVP to scale

From idea to a production system on AWS serverless, with CI/CD, infrastructure as code and quality gates from day one.

Fixed scope

03

Architecture review

A clear read on what you already have: risks, costs, bottlenecks and a prioritised plan you can act on with your own team.

One-off

04

AI and automation

Agents, chatbots and computer vision that run in production, like the WhatsApp booking bot and the retail analytics pipeline I have shipped.

Per project

05

Your team building with AI agents

How I run delivery, installed in your product team: a diagnosis of how you build today, working sessions with your tech lead, and hands-on work on your real codebase until agents do the coding, testing and ops work and your people keep the judgment.

Program

Every engagement is designed to end. The goal is not that you depend on me, but that your team can lead the technology and knows exactly what to ask for when it does need help.

Sectors

Two industries I know from the inside.

Most of my work has happened in businesses where operations are the product: a slow dispatch or a missed booking is lost revenue, not a bug report.

Insurance and assistance

Seven years inside an assistance group: call-center operations, dispatch, a cloud migration for 200+ users and 50+ automated processes. I know how claims, providers and SLAs actually flow, and how to build platforms around them.

Assistance ops · Dispatch · Provider networks · BI

Wellness and service businesses

A multi-tenant booking SaaS serving more than 10K bookings, in-store traffic analytics with computer vision and a WhatsApp booking bot: software that runs the front desk of real locations.

Bookings · Multi-location · Retail analytics

How I work

Few things, done well.

  1. 01

    The smallest solution that holds

    I solve the real problem with the least machinery that survives contact with users. No over-engineering, no layers nobody will maintain.

  2. 02

    Serverless and infrastructure as code from day one

    You pay for what runs, not for servers waiting. CI/CD and quality gates exist before the first feature, not after the first outage.

  3. 03

    Agents write, I review

    AI agents do the coding, testing and ops work. The judgment, the architecture and the responsibility stay with a person.

  4. 04

    Nothing ships without tests and a way back

    Every change is covered and reversible. Speed comes from confidence, not from skipping steps.

  5. 05

    One person accountable, end to end

    I work alone or in small teams, with my own judgment and no hand-offs to hide behind. You tell me the goal; I take care of the path.

  6. 06

    Technology is measured in margin

    Every technical decision has a cost and a return. I think about the product, who uses it and who pays for it, not only the stack.

Saúl da Silva Barros

My story

From cables to CTO.

Caracas, 2009. My first jobs were installing security cameras, alarm systems, access control and structured cabling, with network certifications in hand. The unglamorous layer everything else runs on.

From there: systems analyst automating workflows with SQL and scripts, head of technology integrating a whole group’s systems, and seven years inside an assistance group in Lisbon, first on the operations and finance side, then leading its cloud migration and digital transformation. In 2024 I took over all technology at 360Solved.

What that path taught me: a business rarely has an effort problem. It has a systems problem.

  1. 2009Technology consultant · CaracasCameras, alarms, access control, structured cabling. CCNA / CCNP.
  2. 2012IT systems analyst · CaracasSQL, Python, Bash and VBA to automate workflows and reporting.
  3. 2014Head of Technology · Grupo SigmaglobalRPA, API integration, on-premise infrastructure, BI adoption across departments.
  4. 2016Operations strategy and financial performance · MAWDY, LisbonCall-center planning, cross-functional reporting, cost control.
  5. 2017Cloud and systems engineer, then IT digital transformation · MAWDYVoIP and cloud migrations, ETL, Power BI, 50+ processes automated, IT policies.
  6. 2024CTO · 360SolvedAll technology behind a multi-tenant SaaS on AWS serverless.

Selected work

Systems in production, not demos.

SaaS · CTO, 2024 to present

360Solved

Multi-tenant booking platform for wellness and spa businesses. I own architecture, infrastructure, security, delivery and the technical roadmap.

AWS Serverless · Event-driven · CI/CD · IaC

Computer vision · Retail

CAMTRACK

In-store traffic analytics pipeline for a wellness brand: people detection and tracking across three locations, running on real cameras.

YOLO · ByteTrack · Python

Digital transformation · 2017 to 2024

MAWDY

Cloud migration for 200+ users at an assistance group, cutting dispatch times by 80% and automating 50+ processes, with security policies and a cross-functional team.

Cloud · VoIP · ETL · Power BI

Community · Waitlist

For people who build alone.

A WhatsApp community for founders, solo developers and small teams shipping real products with AI agents. I share how I run delivery day to day, and you bring what you are building.

On WhatsApp · The letters are the invitation

  • Architecture decisions explained, with the trade-offs
  • Reviews of what members are building
  • Templates and setups I actually use in production

Five letters, free · Your place on the waitlist

5 Bytes

Five short letters for founders building a product without a technical co-founder. One question each, no theory.

  1. 01Why did hiring more developers not make your product move faster?
  2. 02Who decided your architecture, and why are you still paying for it?
  3. 03What does every “ship it fast, fix it later” really cost you?
  4. 04What happens when one person understands your whole system?
  5. 05What changes when technology stops being a black box?

By subscribing you accept the privacy policy. You can unsubscribe in any email.

One letter every 2 days, on weekdays. The last one is your invitation to the community.

Have a product to build or a tech stack to put in order?

Tell me what you are trying to achieve and where you are today. I reply personally, usually within a day.

saul@sauldasilva.comWhatsApp meLinkedIn