Available for Contract Work

Building AI systems that drive business impact

AWS Certified AI Practitioner and Senior Full Stack Engineer with 9+ years delivering high-performance web applications. I specialize in RAG pipelines, LLM integration, Node.js, React, Next.js, and AWS, bridging product vision with technical excellence for startups and enterprises.

Why Work With Me

Product & Business Mindset

I don't just write code; I understand the business goals behind it. I bridge the gap between stakeholders and technical teams.

AI That Earns Its Place

I add AI where it removes real work, grounded in your data and measured against the manual process it replaces, not bolted on for the demo.

Straightforward Communication

No jargon, no ghosting. I believe in transparent updates and clear technical translation for non-technical partners.

Expertise

What I Can Help You Build

AI features grounded in real data, on top of systems built to last.

AI & RAG Pipelines

Retrieval-augmented generation and LLM features that answer questions from your own documents and data, not generic ones.

React & Next.js Applications

Modern, high-performance UIs optimizing responsiveness and user experience.

Node.js & TypeScript Backend

Scalable backend services integrated with PostgreSQL and MongoDB.

AWS Infrastructure & DevOps

Managing infrastructure, improving system reliability, uptime, and CI/CD pipelines.

Featured Projects

A selection of work demonstrating scalability, performance, and business impact.

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Personal Projects

Personal Website
ReactTypeScriptViteTailwind CSSAWSCloudFrontLambda

Personal Website

Personal portfolio website showcasing professional experience, selected projects, and case studies, designed to clearly communicate technical expertise and product ownership.

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SaaS & Startup Products

Apsis
TypeScriptNode.jsFastifyReactVitePrismaMongoDBAstroDockerStripe

Apsis

Multi-tenant business management SaaS for Australian sole traders and small teams, pulling clients, quotes, invoices, expenses, tasks, and tax into one system instead of several disconnected tools.

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Fit4Work
ReactTypeScriptNode.jsAWSPostgreSQL

Fit4Work

Online pre-employment screening platform that helps recruiters fast-track suitable candidates by identifying who actually needs further medical/functional assessment for a specific job role.

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Foody Bag
ReactTypeScriptNode.jsAWSPostgreSQLStripeHeadless CMS

Foody Bag

Large-scale consumer food marketplace platform developed as part of Apps People, enabling businesses to sell surplus food and reduce food waste through a digital marketplace.

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How I Work

A structured approach to ensure quality, transparency, and results.

01

Understand

Deep dive into requirements and business goals.

02

Design

Architecting the solution and technical strategy.

03

Build

Agile development with regular feedback loops.

04

Launch & Improve

Deployment, monitoring, and iteration.

Professional Experience

Mar 2026 - Present

Co-founder & Engineer

Apsis
  • Co-founded Apsis, a multi-tenant business management SaaS for Australian sole traders and small teams, unifying clients, quotes, invoices, expenses, tasks, and tax in one system.
  • Took the product from first commit to live release in September 2026 as a two-person team, sharing architecture and delivery.
  • Built quoting and invoicing, expense tracking, timesheets, reporting, GST/BAS summaries, and income tax estimates.
  • Implemented AI-assisted content generation for quotes and invoices, reducing the writing work behind every client document.
  • Integrated Stripe subscription billing, authentication with 2FA, and third-party services.
  • Stack: TypeScript, Node.js, Fastify, React, Vite, Prisma, MongoDB, Astro, Docker, GitHub Actions, Vitest, and Playwright.
Sep 2025 - Present

Fractional Technical Lead & Full Stack Engineer

Independent Software Consultant
  • Fractional technical leadership and full stack delivery for startups building AI and energy-tech products: architecture, hands-on engineering, and cloud infrastructure.
  • At Rahd.ai, re-architected the core platform end to end across backend services, interface, and database design, for an AI product that turns fragmented legacy well records into structured, queryable intelligence for oil and gas decommissioning.
  • Worked hands-on with the retrieval-augmented generation (RAG) pipeline behind the product, maintaining and extending the system that lets engineers interrogate thousands of unstructured historical documents in natural language, work that used to take weeks.
  • Shipped across the full stack in a three-engineer team while contributing to architecture and technical direction.
Jun 2020 - Sep 2025

Software Engineer

Apps People
  • Sole web and backend engineer on Foody Bag, a consumer food-rescue marketplace built from scratch: the API, customer and merchant portals, admin tooling, and public site, serving thousands of customers behind iOS and Android apps with 50,000+ downloads.
  • Designed and built scalable Node.js and TypeScript services on PostgreSQL and MongoDB, integrating Stripe payments and a headless CMS.
  • Built responsive React and Next.js front ends across customer, merchant, and administrative experiences, tuning load performance and responsiveness.
  • Architected and provisioned production AWS environments from scratch: containers and managed data, serverless and CDN, DNS, notifications, monitoring, and IAM.
  • Introduced automated unit and integration testing with CI/CD pipelines, cutting manual release effort and improving uptime.
  • Built a haulage tracking platform for Pilbara Resource Group, a WA mining and civil contractor, following loads from remote mine sites through storage facilities to port.
  • Led client-facing delivery through requirements workshops, progress reviews, and product demos, translating business goals into technical scope across multiple projects.
Jun 2019 - Dec 2019

Full Stack Developer (Contract)

Kindy Manager Pty. Ltd.
  • Developed an internal administrative system to manage customer data and company financial information.
  • Built frontend features using React, JavaScript, CSS, and Bootstrap with a focus on usability and performance.
  • Implemented a web scraping and data aggregation tool for marketing analytics using Node.js, GraphQL, and Azure Table Storage.
  • Designed user-friendly interfaces and optimised application performance for internal users.
  • Automated previously manual processes, improving internal reporting and enabling more data-driven marketing decisions.
Mar 2018 - Jun 2019

Sabbatical - Professional Development

Gold Coast Learning Centre
  • Undertook a planned sabbatical in Australia focused on professional and personal development.
  • Completed a full-time English immersion program, achieving professional fluency for collaboration in international environments.
  • Completed a Diploma of Project Management at Mindroom Innovation with a focus on Agile delivery, risk management, and stakeholder communication.
  • Developed leadership, communication, and coordination skills applicable to cross-functional and multicultural teams.
Nov 2016 - Feb 2018

Full Stack Developer

Altran Consultoria
  • Worked as a consultant allocated at Ford Brasil, developing systems for financial control and operational areas.
  • Maintained and enhanced enterprise applications, identifying improvement areas in existing codebases.
  • Developed and maintained an Invoice Issuer system using Java (JEE6), CDI, JSF, PrimeFaces, CSS, and JavaScript.
  • Built features for a Productivity Plant system using Java (JEE6), CDI, AngularJS, REST APIs, JPA (EclipseLink), and modern frontend technologies.
  • Participated in requirements gathering with business stakeholders using Agile methodologies.
  • Tested, deployed, and upgraded applications to meet evolving business needs.
  • Collected and evaluated user feedback to improve system usability and reliability.
  • Provided user training and support for internally developed systems.
Nov 2015 - Nov 2016

Full Stack Developer

Ford Motor Company
  • Developed and maintained enterprise financial systems as part of an internal engineering team.
  • Worked on backend and frontend features using Java (JEE6), CDI, JSF, PrimeFaces, Struts, HTML5, CSS3, and JavaScript.
  • Implemented modifications and enhancements to existing systems based on business requirements.
  • Integrated software components and third-party libraries into internal applications.
  • Participated in requirements gathering with business stakeholders to support financial reporting needs.
  • Created and optimized SQL queries to generate financial reports.
  • Tested, debugged, and deployed applications across multiple environments.
  • Developed automation scripts using VB to promote files and support environment workflows.
  • Produced technical documentation to support system maintenance and knowledge sharing.
Apr 2014 - Aug 2015

IT Support Intern

Cinemark Brasil
  • Provided remote and on-site technical support for Cinemark theatres across Brazil.
  • Assisted with hardware troubleshooting and software configuration in a multi-location environment.
  • Supported day-to-day IT operations to ensure systems remained available during cinema operating hours.
  • Contributed to maintaining stable IT infrastructure across dozens of theatre locations.
Jan 2012 - Mar 2014

IT Support

Construtora Lorenzini
  • Provided technical support to internal users, troubleshooting hardware, software, and network issues across the company.
  • Developed and maintained a PHP and MySQL internal intranet system to support company operations.
  • Assisted with system maintenance and basic infrastructure tasks in a corporate IT environment.

Certifications

Credentials backing the work.

AWS Certified AI Practitioner badge

AWS Certified AI Practitioner

Amazon Web Services · Sep 2026

Foundational knowledge of AI, machine learning, and generative AI concepts, and the AWS services used to build and operate them responsibly.

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Work With Me

Flexible engagement models tailored to your project needs.

Hourly / Short-Term
Perfect for specific features, bug fixes, or consultation calls.
  • Flexible scheduling
  • Pay as you go
  • Quick turnaround
Fixed-Scope Projects
Defined deliverables with a clear timeline and budget.
  • Clear milestones
  • Fixed budget
  • End-to-end delivery
Long-Term Partnership
Ongoing development, maintenance, and technical leadership.
  • Dedicated availability
  • Strategic planning
  • Priority support

What people say

Vitor is reliable, proactive, and truly understands the business needs.
P
Product Manager
Former Colleague
He bridges the technical and business sides perfectly, delivering value fast.
F
Founder
Startup Client

FAQ

Ready to Build Something Great?

I'm actively looking for opportunities where I can contribute as a Senior Developer or Technical Lead.

AI and full stack engineering for products that have to work in the real world.

© 2026 Vitor Sachini. All rights reserved.