Hiran Travassos | Freelance Software Engineer

System online // Hiran Travassos

You talk directly to the person who builds it. I turn your idea into a working product, keep you posted at every step and stay around after launch.

7+ Years Experience
A direct line to me
From idea to launch

Talk on LinkedIn

Hiring full-time? See my résumé

02 // User profile

I'm Hiran, a freelance software engineer. You tell me what your business needs and I take it from there: one person, one conversation, no middlemen.

Whether it is a system to run your shop, a CRM for your team or the idea for an app, I explain every choice in plain language and you see it working early, not only at the end.

Taking on new freelance projects.

User IDTaking projects

Hiran Travassos

Freelance Software Engineer

Since 2019

0+Years Experience

0+Client Projects

You talk to me
One person looks after your project from the first conversation to launch. No game of telephone.
Plain language
I explain every decision in terms of your business, your timeline and your budget, without technical jargon.
Results from the start
You follow versions that already work along the way, instead of waiting for one big reveal at the end.
Built to last
Software that stays fast and easy to change, with me within reach when you need something new.

03 // Programs

Real products for real clients, and a game I built for myself. Open a project to see what it does for the people who use it.

01/ 07Pizzaria SenadorUse the arrow keys or swipe

Built with Claude Code

Pizzaria Senador

Ordering platform for a drinks shop turning pizzeria

Ongoing2026 to Present01 / 07

01
Complete ordering platform for a client's drinks shop (adega) that is turning into a pizzeria: an iFood style customer app, a store backoffice and a dedicated courier area, all in one standalone system.
02
Orders run from quote to delivery with automatic thermal printing over USB, WhatsApp notifications, PIX payments with refunds, outbound webhooks, live updates and finance dashboards.
03
Contract first architecture: a 1,400 line API contract keeps frontend and backend in sync across more than 20 bounded contexts, a transactional outbox event pipeline, and LGPD aware data retention with audit trails.
04
Full store operations: promotion kits, coupons and loyalty, complaint chat, customer reviews, and role based access for owner, administrators, assistants and couriers.

claude code // pizzaria senador

$claude

Built with Claude Code

0k+
Lines of TypeScript: 0
Test files: 0
Commits by Claude Code: 0
Pull requests merged

Claude Code wrote the implementation, working from a written product brief, a shared API contract and an AGENTS.md rulebook that fixes naming, layering, security and testing rules.
Four days of git history separate the first commit (October 2, 2026) from the full feature set, including a mid project port of the backend from Spring Boot to NestJS.
Every contract behavior gets a happy path test and a failure code test, and type check, lint, tests and build gate every push.

pizzaria-senador.hirantravassos.com.br

BrokerIn

CRM with AI for independent real estate brokers

Ongoing2026 to Present02 / 07

01
A CRM with AI for independent real estate brokers in Brazil: WhatsApp, sales pipeline, visit calendar, contracts and an AI assistant in one responsive app, made for the broker who answers from the phone and cannot leave a client waiting.
02
WhatsApp lives inside the CRM, with every conversation tied to the customer record. The AI suggests the next reply, polishes a message before it is sent, builds property presentations with photos and imports contacts from existing conversations, while sends follow safe limits that protect the broker's number.
03
The assistant knows the portfolio: ask by text or audio which customers went cold or which properties fit, let it search the main listing portals for what a client wants, read a free daily summary at 8 am and get proposals and receipts as PDF or Word.
04
From first contact to contract: a drag and drop pipeline, a visit calendar that warns about clashes, a closing room with a document checklist, client portal and partner brokers, signature tracking, a public showcase page with a link for every property and a small game layer where customers become characters and properties a little city.

brokerin.com.br

Built with Claude Code

Hex Dominion

A turn based strategy game for phones, with rival AI leaders and online multiplayer

Ongoing2026 to Present03 / 07

01
An original turn based strategy game for Android in the spirit of the classic civilization games: found cities, research a technology tree, build armies, trade and negotiate with ten rival civilizations on a 3D hex map.
02
The rival leaders think for themselves. A utility based AI weighs what to build, research, attack or propose, and an opinion system remembers gifts, broken promises and wars, so diplomacy feels like talking to people.
03
Everything a mobile game needs around the rules: online play with friends by code or quick match, alerts when it is your turn, cloud saves with Google Play Games and an optional remove ads subscription, checked on a server of my own.
04
A complete game on a phone: a 3D map with shadows, swaying trees and fog of war, animated units and cities, leader portraits that react to their mood and an interface that works in portrait and landscape.

claude code // hex dominion

$claude

Built with Claude Code

0k+
Lines of GDScript, tests included: 0
Test files: 0
Commits: 0
Playable civilizations

Claude Code built the game from written design notes for the AI, the rendering and the rules, and the rules live as JSON data so the balance can change without touching the code.
The first commit is from October 20, 2026. The online game, cloud saves and the Android release builds followed within days.
A headless simulator plays 48 computer only games to check nine balance targets, so every change to the rules is measured.

Visual Box

Full-stack system for glass manufacturing and retail

Ongoing2021 to Present04 / 07

01
Full-stack system managing glass manufacturing and retail operations since 2021. Delivered complete modernization while ensuring zero data loss during migration.
02
Executed seamless database migration handling extensive legacy data, then rebuilt the entire system using React and Node.js/Express for improved performance and maintainability.
03
System continues to serve as a critical business tool for daily operations, demonstrating long-term reliability and sustained client value.
04
Key achievement: Successfully balanced modern technology adoption with business continuity, ensuring smooth transition with no operational downtime.

Conecta

Application hub serving multiple business functions

Completed2021 to 202305 / 07

01
Full-stack freelance development for a comprehensive application hub serving multiple business functions. Navigated complex multi-developer codebase to deliver enhancements and maintenance.
02
Demonstrated adaptability working within large-scale collaborative environment with diverse stakeholder requirements.
03
Maintained project continuity from 2021-2023 while balancing full-time role at Maersk, showcasing strong time management and client communication skills.
04
Successfully managed stakeholder expectations and project scope to ensure quality deliverables despite resource constraints.

conectagabinete.com.br

Teiia

Compliance management platform for medium-sized enterprises

Completed2021 to 202206 / 07

01
Frontend development for compliance management platform targeting medium-sized enterprises using Vue.js framework.
02
Developed scalable component architecture and reusable templates, ensuring consistent user experience across the application.
03
Collaborated effectively with backend team to deliver seamless integration and reliable functionality.
04
Demonstrated ability to work independently as freelance consultant while maintaining high code quality standards.

teiia.com.br

Triad

Multi-user e-commerce platform on Next.js and NestJS

Completed2023 to 202407 / 07

01
Architected and developed complex e-commerce platform with multi-user workflows and custom design patterns using Next.js and NestJS.
02
Delivered technically sophisticated solution addressing diverse business requirements and stakeholder needs.
03
Led full-stack development independently, demonstrating comprehensive technical expertise and problem-solving capabilities.
04
Successfully navigated project complexities while maintaining scalable architecture and clean code principles.

04 // Extra

Alongside freelancing, I work as a Senior Software Engineer at A.P. Moller Maersk. A few highlights here, and the full résumé on a page of its own.

STAR Award

Maersk's Highest Honor

Recognized for exceptional out-of-the-box thinking and outstanding contributions to frontend development innovation

October 2025

SPOT Award

Technical Excellence Recognition

Awarded for technical growth and extensive knowledge of Maersk's Design System (MDS)

December 2023

Hiring full-time?

My résumé has its own page: experience, skills and the corporate projects, made for tech recruiters.

Open the full-time résumé

06 // Open channel

Tell me about your project. If you are hiring for a full-time role instead, my résumé has a page of its own.

Let's build your project

You get one person who listens, plans and builds. Tell me what you need and we will work out the next step together.

Message me on LinkedIn

Hiring full-time?

My résumé, experience and skills are on a page made for recruiters.

Open the résumé

Preferred contact // LinkedIn messages

07 // Transmission

Send me a message on LinkedIn with a few lines about what you need, and we will take it from there.

Message me on LinkedIn

Software built around your business Freelance Software Engineer

You talk to me

Plain language

Results from the start

Built to last

Pizzaria SenadorPizzaria Senador

Built with Claude Code

STAR Award

SPOT Award

Hiring full-time?

Let's build your project

Hiring full-time?

Pizzaria Senador