Available for new projects Software Developer · Web · APIs · AI · Automation · Cloud

I build software
that grows with
your business.

I take your idea from paper to production: a site, a system, or an automation that solves a real problem in your business.

Want to share more details? Go to contact

Gabriel Sena

Real results

305k+ requests served without failures in a short, high-traffic burst
20× faster response time (1 min to 3 s)
12× more concurrent automations per client (10 to 120+)
6+ years building production software

What I do

How I can help your business

01

Sites & Landing Pages

Landing pages, institutional sites, sales and capture (whitelist) pages, and e-commerce that load fast and convert. From a simple site to one that needs to scale, with the integrations real traffic demands.

02

Cloud & Infrastructure

Infrastructure as a service, from deploy to day-to-day: AWS, auto-scaling, CI/CD pipelines, and monitoring. I get your system live and keep it there with confidence, so you stop worrying about downtime as your business grows.

03

AI & Automation

I integrate AI intelligently into your systems (OpenAI, Claude): automated support, data analysis, and content generation. And when there's a manual, repetitive process, I analyze the flow and automate it, with or without AI, giving hours back to your day.

04

Web Systems & APIs

I build custom web systems of any kind, like admin dashboards, client portals, internal tools, and SaaS, plus the APIs that connect them (REST/GraphQL, third-party integrations). Software that fits your workflow, without relying on off-the-shelf solutions.

How I work

A clear path from idea to delivery

01

Align

I start by understanding what you need, then map out the plan: scope, approach, and timeline. Nothing goes to code before you approve.

02

Build

I build it production-ready, with clear deliverables and regular check-ins. You always know where the project stands.

03

Launch & evolve

I ship, then keep improving. I stay available to evolve and support what I built.

Where I've worked

Experience

SolarMarket

Senior Software Developer

Led a team delivering automation features to thousands of companies. Reduced core search response from 1 min to under 3 seconds. Scaled client automations from 10 to 120+.

Feb 2023 · Present

SolarMarket

Fullstack Software Developer

Built a no-code workflow automation tool (think Zapier) used by non-technical teams. Diagnosed and resolved production incidents. Participated in a full interface redesign.

Oct 2021 · Feb 2023

Freelancer

Java Developer

Ran a gaming server with 300 simultaneous users and 24/7 uptime. Integrated payment systems and delivered on-demand features for clients.

2016 · 2018

Portfolio

Recent projects

[CLASSIFIED]

Coming soon

Probex

A developer tool that reads your codebase and generates tests automatically using AI.

Python · FastAPI · DynamoDB · AWS

Captly Live

Black Friday 2025

Capture API battle-tested in production on Black Friday

Angular · Google Gemini · NestJS · Socket.io

Munio

Jul 2024 – Aug 2024

Conversation practice with real-time AI feedback

Next.js · React.js · Cloudflare AI · MongoDB

AudioInsight

Apr 2024 – May 2024

Audio transcription with AI-answered questions

NestJS · RabbitMQ · Vue.js · Docker

Image Wizard

Nov 2024 – Jan 2025

Event-driven image processing at scale

JavaScript · Python · FastAPI · PostgreSQL

SPACEWAR

Jul 2025 – Aug 2025

2D browser space shooter, in vanilla JavaScript

Technologies

What I work with

Languages

TypeScriptJavaScriptJavaPythonSQL

Backend & APIs

Node.jsNestJSFastAPIGraphQLExpress

Cloud & Infrastructure

AWSDockerEKSLambdaCI/CD

AI & Automation

RAGEmbeddingsOpenAIAnthropicPrompt Eng.

Databases & Messaging

PostgreSQLMySQLMongoDBDynamoDBRabbitMQ

Frontend

ReactVue.jsNext.jsTailwind

Don't see your stack here? Different systems share the same foundations. If you have a need, let's talk.

Get in touch

Leave your email, I'll reach out.

Need a site, a system, an API, or a manual process automated? I take on freelance projects and partnerships, and I usually reply within a few hours.

Just your email is enough, I'll reach out within a few hours.

Or reach me directly at [email protected]