One senior engineer, no middlemen

I'm Adriano. I've been writing code professionally since 2009. I've delivered a three-week MVP for a Barclays and Bain-backed startup, cut a live broadcast API from three seconds to 300 milliseconds, and helped build payment systems at a billion-dollar company. You work directly with me, start to finish.

0Years writing software, since 2009
0+Projects delivered from idea to enterprise
$1B+At bolttech, a payment platform I helped build
Experience orbitIn motion
17Years building
2009First project delivered
2026Still delivering

I've built production systems for

From Series-A startups to enterprise fintech, 250+ projects delivered 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

Where 17 years of engineering shows up

From a 3-week MVP at a Barclays and Bain-backed startup to systems that handle millions of transactions at a $1B+ company.

  1. 2009 - Present

    Freelance · Senior Software Engineer

    Websites, APIs, and custom systems delivered directly to customers across Brazil and internationally, running in parallel with every role below.

    50+ customers delivered end-to-end

  2. Sep 2023 - Nov 2024

    GigEasy · Senior Software Engineer

    Built the entire technical foundation of a fintech startup backed by Barclays and Bain Capital, and delivered the investor-ready MVP that is still live today.

    MVP delivered in 3 weeks

  3. Jan 2023 - May 2023

    Imóveis SC → Imohub · Chief Technology Officer

    Rebuilt a Brazilian real estate portal as Imohub, handling 120k+ properties with sub-second search and 70% lower infrastructure cost.

    120k+ properties, 70% cost cut

  4. Apr 2021 - Jul 2023

    Cuez by Tinkerlist · Senior Software Engineer

    Rescued the API behind a live broadcast tool used on air across Europe, cutting response time from 3 seconds to 300 milliseconds.

    10x faster API

  5. Jan 2020 - Apr 2021

    bolttech · Senior Software Engineer

    Led the payment service at a $1B+ unicorn, delivering 40+ integrations with banks and processors across Asia and Europe at 99.9% uptime.

    40+ payment providers · $1B+ unicorn

  6. Oct 2020 - May 2021

    Manejebem · Software Engineer

    Built backend, frontend, and DevOps for an agritech platform on NestJS, React, and Kubernetes.

  7. Feb 2010 - Feb 2017

    W2O web softwares · CTO

    Led a team of 15 developers serving 30+ customers, and delivered 25+ custom products from definition to support.

    15 developers · 30+ customers

What It's Like Working With Me

A few things customers consistently mention after working with me.

I communicate in plain English

No jargon, no lengthy technical reports. You get clear updates, honest assessments, and straight answers, even when the answer is that something will cost more than you think.

Response time

Within 24h

Daily async updates, with a phone number you can actually call.

I own the work end to end

I don't hand off to a team of juniors. From the first line of code to the final deploy, it's me. That means accountability and a consistent quality bar throughout.

Active customers

1 at a time

One customer at a time, by design. Limited slots mean each project gets my full attention from discovery to launch.

I flag problems before they become incidents

17 years teaches you to recognize early warning signs. I surface risks, performance issues, and blockers before they reach production, not after.

bolttech uptime

99.9%

Across 40+ payment integrations in Asia and Europe, with zero post-launch critical bugs.

I leave your project better than I found it

I don't leave a mess behind. Every feature is delivered clean, documented, and easy to maintain. Your next engineer will thank you.

Cuez API

3s → 300ms

Rewrote the query layer and moved media work async, then cut infrastructure cost ~40%.

Named reviews you can verify

Managers and senior engineers from GigEasy, bolttech, and Cuez. Every quote links to a real LinkedIn profile, so check any of them before you trust me with your build.

“He brings the experience of a seasoned developer who has built systems at scale and learned to avoid common pitfalls. He builds quickly, but he also builds efficiently.”
Gabriel EdlinGabriel EdlinOps/Strategy, Ex Lyft · GigEasy
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
I strongly recommend Adriano as a highly competent and qualified back-end developer. I had the pleasure of working with him in the same company and it was always a great experience. He is an experienced professional, always open to new ideas and innovations, and careful with the code, ensuring the quality and efficiency of teamwork. In addition, Adriano has a very positive and collaborative attitude, and it has always been a pleasure to work with him. Undoubtedly, he is a great addition to any development team.
Gregori MausGregori MausSenior Backend Developer · Cuez by Tinkerlist
Adriano is an extremely qualified and results-oriented professional, as a developer he is in search of constant learning and values the software quality and design patterns. As a person he is a simple and humble guy who is always willing to help and contribute in any situation. It was a pleasure working with him and I hope we can work together again.
Jhonatan AmorimJhonatan AmorimEngineering Manager · bolttech
Adriano is an amazing professional that I had the pleasure to work with. Incredibly competent and can definitely get things done and done well. A very knowledgeable developer who gladly helped me and the team several times. I highly recommend him !!
Phellipe PerinPhellipe PerinSenior Frontend Engineer at Capgemini · bolttech
Adriano is a great software engineer. Always with many ideas do add and open to discuss the best approach to create the most scalable software as possible. Adriano is an extremely easy person to work with and very dedicated to their job. It was a huge pleasure to work with him.
Rafael CamilloRafael CamilloSenior Software Engineer · Cuez by Tinkerlist
Adriano is a very dedicated worker, always looking forward to seek the best fitting solutions to every challenged presented to him. He brings joy to every team with his good mood and easy laugh. His experience is evident and can bring any company to the next level.
Pedro LuísPedro LuísSenior Software Engineer @ Qwist · bolttech
Always keen to deliver fast and resilient solutions, Adriano has been a reference in many aspects of our development environment. A trustworthy professional that's very skilled and able to find and solve most problems we faced. A true team player and an easy-going type of guy.
Petrus CyrinoPetrus CyrinoSoftware Engineer at Grover · bolttech

Where I learned the fundamentals

Several credentials, each one mapped to the real work it shows up in.

  • Google Data Analytics Certificate

    Coursera · Oct 2022 - Apr 2023

    Where it shows upBehind the analytics and reporting work for the Norte Web Digital CRM and Reevia's HubSpot sync.

  • Bachelor of Information Systems

    Uniasselvi · 2011-2015

    Where it shows upThe architecture foundation behind 120k+ properties on Imohub and 40+ payment integrations at bolttech.

  • Programming and systems development

    SENAI · 2009-2010

    Where it shows upThe fundamentals that let me deliver a clean, tested MVP for GigEasy in 3 weeks.

  • Mechatronics, Robotics and Control and Automation Engineering

    SESI · 2007-2008

    Where it shows upThe systems thinking I bring to async pipelines, like Cuez's media processing on Laravel Horizon.

From Google's Data Analytics certificate to 17 years in production, each credential maps to real work.

The tools, and the work they delivered

Every tool here has run in production across real customer projects.

  • PHP
  • JavaScript
  • TypeScript
  • Node.js
  • React
  • Vue.js
  • Next.js
  • Laravel
  • NestJS
  • MySQL
  • PostgreSQL
  • MongoDB
  • Redis
  • AWS
  • Docker
  • Kubernetes
  • OpenAI
  • Claude AI
  • Jira
  • GitHub
  • Bitbucket
  • GitLab
  • Linear