Max Keller — Software Engineering · AI · Automation

Software Engineering · AI · Automation
Portrait of Max Keller
Max Keller / 2026

I build websites, systems, automations and integrations that remove manual work and connect real operations.

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Simple web projects from R$600 · Talk to Max AI

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Production products

SaaS, websites and web systems

APIs & integrations

CRM, ERP and external services

Operational automation

Flows, queues and processes

Applied AI

Agents, RAG and WhatsApp

What I can build

From a simple website to a connected operation.

The solution is sized around the problem. No unnecessary stack, no complexity for show.

From R$600

Websites & landing pages

Portfolios, business websites and conversion-focused landing pages built for speed and clarity.

Responsive designTechnical SEODeployment & domain
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Scope-based

Systems & dashboards

Web systems, authenticated areas, admin dashboards and MVPs with real business rules.

Frontend + backendAuthenticationDatabase
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Scope-based

Automation & integrations

Connect APIs, CRM, ERP, WhatsApp and routines that currently depend on manual work.

REST APIsWebhooksQueues & routines
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Scope-based

AI & WhatsApp

Agents, RAG, triage and conversational automation applied to actual operations.

OpenAIWhatsApp APIGuardrails
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WhatsApp support kit See all business solutions Describe your project to Max AI

Projects

Projects built around real problems

Explore actual product screenshots, animated explanations and technical details. Projects without verified screenshots use clearly labeled diagrams rather than invented interfaces.

10 case studies

Talk about your project

Talk to Max AI

Describe your idea naturally. It understands the context, answers technology questions and reaches an initial estimate without turning the conversation into a form.

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Hi! I'm Max AI. Describe your idea in your own words — you don't need technical jargon. I'll understand the scope with you, explain technology choices, and calculate an initial estimate when there is enough context.
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Max AI does not close deals or guarantee prices. Final commercial conditions are always validated directly with Max.

How I approach the work

Technology is only useful when the operation gets better.

The goal is not to make a project look complex. It is to make the right decisions, integrate what matters and keep the solution understandable.

01Product + engineering

I don't think only in screens. I consider flows, business rules, data, operations and product evolution.

02Real integrations

APIs, CRM, ERP, WhatsApp, webhooks and external services with fallback and error handling.

03AI with guardrails

AI with clear scope, validation, fallback and deterministic rules where hallucination is unacceptable.

04Observable production

Logs, monitoring, failure handling and architecture designed to diagnose issues after deployment.

05Iterative delivery

Scope split into reviewable stages to reduce rework and validate decisions before complexity grows.

Process

How I work

01

Discovery

I understand the business, audience and goals before writing a single line of code. One week of the right questions is worth months of rework.

02

Design & Architecture

Wireframes, data flow and technical decisions. I define the stack, integrations and database structure before coding.

03

Development

Short sprints with reviewable deliveries, typed code and clear progress checkpoints.

04

Delivery & Support

Deployment, documentation and handoff, with room for adjustments and product evolution.

About

Software
that solves
real problems.

I work across software engineering, automation and integrations, turning operational processes into clear, reliable digital products that are easy to evolve.

My work combines React/Next.js interfaces, APIs, CRM and ERP integrations, and AI agents. I also build Trivya as a WhatsApp-connected booking platform.

I prioritize clear architecture, observability, documentation and a user experience that never feels like a prototype.

Certifications & courses0
Featured projects0
Portfolio languages0
Own SaaS in production0

Career

Professional experience

2020 – 2021

IT Support Analyst

Valecard

Technical ticket resolution, user support and experience with corporate infrastructure and Windows environments.

2021 – 2023

NOC Monitoring Analyst

Valecard

Critical infrastructure monitoring, alerts and incident handling, Zabbix/Grafana dashboards, operational triage and escalation.

2026 – Present

Support & Development Analyst

EZ Soft

Advanced support, incident analysis, APIs, CRM/ERP integrations, databases, automation and production troubleshooting.

2026 – Present

Conversational Architecture & WhatsApp API

EZ Soft

Conversational UX design, AI flows with guardrails, integrations and projects using the Official WhatsApp API.

2026 – Present

Independent Products & Projects

Trivya and other projects

Building SaaS, websites, systems, automation and integrations focused on product, operational quality and delivery.

See my career on LinkedIn

Tech stack

Tools & domains

Next.js 16
React 19
TypeScript
Tailwind CSS v4
Framer Motion
shadcn/ui
Radix UI
HTML / CSS
SEO Técnico
Canvas & WebGL
Mobile-first
Core Web Vitals
Next.js 16
React 19
TypeScript
Tailwind CSS v4
Framer Motion
shadcn/ui
Radix UI
HTML / CSS
SEO Técnico
Canvas & WebGL
Mobile-first
Core Web Vitals
Node.js
Java
PHP 8
Python
MySQL
PostgreSQL
Redis
Claude API
OpenAI API
Vercel AI SDK
LangChain
RAG + Qdrant
Cursor / Kiro
JWT / OAuth 2.0
Node.js
Java
PHP 8
Python
MySQL
PostgreSQL
Redis
Claude API
OpenAI API
Vercel AI SDK
LangChain
RAG + Qdrant
Cursor / Kiro
JWT / OAuth 2.0
Docker
GitHub Actions
AWS
Google Cloud
Oracle OCI
Linux / VPS
Nginx / Traefik
Grafana
Zabbix
WhatsApp Bot
n8n
COBIT 2019
Docker
GitHub Actions
AWS
Google Cloud
Oracle OCI
Linux / VPS
Nginx / Traefik
Grafana
Zabbix
WhatsApp Bot
n8n
COBIT 2019

Education

Certifications

32 certifications
Alura2023

Governança de TI & COBIT 2019

Alura
Alura2025

Formação Java com OO

Alura
Alura2025

Formação Java Web: Spring Boot

Alura
Alura2024

Imersão Dev Back-End

Alura
Alura

SQL e Banco de Dados

Alura
Alura

Node.js

Alura
Alura

Python

Alura
Oracle

Oracle Database SQL

Oracle
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FAQ

Before starting a project

How much does a project cost?+

Simple landing pages and lean portfolio websites start at R$600. Systems, automation, AI and integrations depend on scope. Max AI can provide an initial reference.

How long does it take?+

Timing depends on pages, business rules, integrations and availability. The schedule is defined after briefing and technical validation.

Are domain, hosting and third-party services included?+

Not automatically. Domain, hosting, licenses, paid APIs, messaging, media and other third-party services are validated separately.

Do you provide maintenance after delivery?+

It can be included as ongoing support or product evolution, depending on the system and the level of follow-up required.

How are changes handled during the project?+

The initial scope is validated before development. Compatible adjustments are handled in review stages; scope expansion is reassessed before implementation.

Is the source code delivered?+

Repository, documentation, deployment and handoff conditions are aligned in the proposal according to the project and services involved.

How does payment work?+

Commercial conditions are defined in the proposal once the scope is clear. Max AI does not close deals or define final commercial terms.

Still unsure? Ask Max AI →

Contact

Let's build
something useful
and well made.

Tell me the problem, the goal and what already exists. We can define the right scope from there.

For a quick starting point, talk to Max AI or reach me directly.

Start with Max AIWhatsApp directly
WhatsAppLinkedIn
© 2026 Max Keller · Software Engineering · AI · Automation
LinkedInmaxkiller209@gmail.com
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