1–2 spots available for Q2 · Claim yours
1–2 spots available for Q2

I'm Adriano. I build software for founders who can't hire a CTO yet and for business owners tired of slow sites, broken tools, and freelancers who ghost. 17 years, 250 projects, fixed prices.

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Adriano Junior
StatusOpen · 1–2 slots
Shipped250+ projects
Adriano Junior
Senior SWE · Consultant
in/adrianojr
Or pick what you need
Proof, not promises
10x faster
Cuez API speed-up from 3s to 300ms (Belgium SaaS)
3 weeks
MVP at GigEasy (Barclays/Bain-backed) vs. 10-week agency benchmark
40+
Payment providers integrated at bolttech ($1B+ unicorn)

I've built production systems for

From Series-A startups to enterprise fintech — 250+ projects shipped since 2009.

bolttech
40+ payment providers · $1B+ unicorn
Cuez by Tinkerlist
API 10x faster · 3s → 300ms
GigEasy
Investor-ready MVP in 3 weeks
Imohub
120k+ properties · 70% infra cut
Reevia
2M+ records · <50s HubSpot sync
LAK Embalagens
45% bounce cut · 3x SEO impressions

Need Senior Engineering Help?

Tell me what is going wrong. I will show you exactly how I have fixed it before.

A slow site quietly drains revenue every day it stays up.

I rebuilt Imóveis SC as Imohub: 120k+ properties, sub-half-second search, and a 70% lower infrastructure bill. Faster pages, lower costs, more conversions.

Always with many ideas to add and open to discuss the best approach to create the most scalable software as possible.Rafael Camillo, Senior Software Engineer, Cuez by Tinkerlist
See the Imohub rebuild
70%infrastructure cost cut at Imohub

Services

One senior engineer, four ways to work together. Start with one, compound the rest as you grow.

Most popular

Applications

$3,499/mo

Monthly subscription · cancel anytime

Your own senior engineer on subscription. I ship features in 2–4 day cycles, pay down the tech debt slowing your product, and own the whole technical side. No hiring, no contracts.

ROII shipped GigEasy's investor-ready MVP in 3 weeks vs the usual 10. One subscription replaces a full-time senior hire.

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Fixed-price project

Websites

from $2,000

Fast, conversion-ready sites with a 14-day money-back guarantee and a 1-year bug warranty. 100% code ownership.

ROILAK Embalagens: 45% lower bounce, 3x SEO impressions.

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Monthly retainer

AI Automation

$3,000/mo

Document processing, chatbots, and lead scoring grounded in your real data. 30-day accuracy warranty.

ROISaves teams 20–40 hours of manual work every month.

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Monthly retainer

Fractional CTO

from $4,500/mo

Architecture, hiring, and investor readiness for pre-seed to Series A. Senior leadership without the full-time overhead.

ROI80% of the strategic value at a fraction of a full-time CTO's cost.

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Case Studies

Real challenges. Real code. Real impact. See how I solve complex problems.

Web App
Unified payment orchestration across Asia and Europe

Unified payment orchestration across Asia and Europe

bolttech — backed by Tokio Marine · MetLife Next Gen Ventures

Delivered the payment orchestration platform at bolttech, a $1B+ unicorn, with 40+ integrations across multiple regions.

A results-oriented professional.Jhonatan Amorim, Engineering Manager, bolttech
Fintech$1B+ unicorn40+ payment providers15 new markets
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0+Payment providers integrated
99.9%Platform uptime SLA
Web App
A custom CRM that turned Google Maps into a lead machine

A custom CRM that turned Google Maps into a lead machine

+500%
Lead base growth

Built a purpose-built CRM for a digital agency that captures leads from Google Maps, reaches them via official WhatsApp (Twilio + Meta API), and uses AI to suggest replies and standardize templates. The system scaled the lead base by over 500%, with 250 new leads entering the pipeline every day.

250 leads a day. We could never do that manually.Norte Web Digital
+500% leads250 leads/day3-4 day sales cycleWhatsApp Meta API
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Web App
Four systems, one source of truth: HubSpot visibility for one of Brazil's largest vet networks

Four systems, one source of truth: HubSpot visibility for one of Brazil's largest vet networks

2M+
Records processed

Built a custom integration layer for Reevia that connects four source systems into HubSpot for one of Brazil's largest veterinary companies. Over 2 million records processed with full normalization. Any lead from any system is inside HubSpot in under 50 seconds, standardized and ready to use.

For the first time, our teams all work from the same data. The integration runs silently in the background and just works.Reevia
2M+ records<50s sync4 weeks deliveryHubSpot integration
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Website
Turned a digital agency's website into its best sales tool

Turned a digital agency's website into its best sales tool

+35%
Leads generated

Built a conversion-first website for a digital marketing agency. Brand-aligned, loaded with nine live demo sites, and structured to answer every buyer objection before the first call.

The website started closing clients before I even picked up the phone.Norte Web Digital
Digital Agency+35% leads+15% revenueConversion-focused website
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My Guarantee

The risk is on me, not you.

Three promises I put my name on. They are the same in year one as in year seventeen — backed by a guarantee, not a handshake.

1

You talk to me, not a project manager

No account managers, no middlemen, no game of telephone. When you hire me, you work directly with the person writing the code.

2

If it ships, it works

I don't push code and pray. Everything gets tested, reviewed, and deployed with monitoring. If something breaks after launch, I fix it. No extra charge.

3

Deadlines mean deadlines

In 17 years I've never ghosted a customer or missed a launch date. I deliver when I say I will, or I let you know early enough to plan around it.

14dayMoney-back guarantee. Not happy? Full refund, no questions.
1yearBug warranty on every website I ship. If it ships, it works.
$0extraPost-launch fixes included. Something breaks, I fix it.

Every engagement is personally backed. If it ships, it works — and if it ever doesn’t, that’s on me to make right.

Adriano

Endorsed by Technical Peers

See what Engineering Managers and Senior Developers say about working with me.

Adriano is a rare type of engineer who excels, not just in his technical domain, but as a solution-driven collaborative member of the team. I am continually impressed with his ability to create robust products in incredibly short time frames AND to provide smart solutions that improved both our internal efficiency and user experience.
Samantha NiessingSamantha NiessingSr. Manager, Lifecycle Comms @ NRG · GigEasy
01/08