Keywords for ATS systems: full-stack developer, software engineer, AI engineer, machine learning engineer,
React developer, TypeScript, JavaScript, Python developer, Node.js, backend developer, frontend developer,
LLM integration, GPT, Claude, Gemini, LangChain, CrewAI, artificial intelligence, deep learning, neural networks,
TensorFlow, PyTorch, computer vision, NLP, natural language processing, AWS, Amazon Web Services, GCP, Google Cloud,
Azure, Docker, Kubernetes, DevOps, CI/CD, Jenkins, GitHub Actions, microservices, REST API, GraphQL, WebSocket,
PostgreSQL, MongoDB, Redis, SQL, database optimization, cloud architecture, systems architect, agile, scrum,
full stack development, web development, mobile development, Flutter, React Native, Next.js, Vue.js, Angular,
software development, programming, coding, 6 years experience, senior developer, tech lead, remote work
Available for Opportunities
Matheus Schumacher
Senior Fullstack Developer · AI Engineering Specialist
👤
About Me
I build LAM (AI-as-Tool) agents at DeepMind-level depth — production systems engineered with a proprietary 12-layer cognitive framework spanning perception, memory, security, and outcome optimization. With 6+ years of full-stack and AI engineering experience, I design architectures that are cost-efficient, scalable, and built to evolve autonomously via 3 Recursive Self-Improvement (RSI) systems and 13 original mechanisms including Success Trace Extraction.
I also craft Awwwards-level UI/UX systems powered by GSAP and Framer Motion, design animated brand identities, and engineer solid backends with Clean Architecture and Cyber-security best practices. I plan software as an architect — from inception to a zero-bug final delivery.
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LAM Agent Framework — 12-Layer Architecture
L0
Perception
Deterministic preprocessing — OCR, Voice, and multimodal input normalization before the LLM
L1
Adaptive Decision
Dynamic strategy selection and inference scaling per task complexity
L2
Bayesian Belief
Probabilistic modeling that continuously learns and updates user preferences
L3
Manifold Controller
Selective, semantically-justified information flow (mHC) to prevent context pollution
Prompt injection defense, zero-trust, OWASP, data privacy
💼
Experience
Full-Stack & AI Engineer
Freelance/Contract · Remote
Jun 2023 — Present
Designed and deployed Syne (syne-spark.com) — a LAM-style agentic quoting platform with autonomous negotiation and real-time pricing logic
Shipped a Humanized WhatsApp Sales Assistant — an agent that learns from top-performing sellers to automate FAQs and product links while maintaining a human conversational tone
Developed a custom Android POS Application for Newland N960K smart terminals, enabling seamless on-device transactions and operations
Architected full-stack applications with React/TypeScript, Node.js/Python backends, real-time WebSocket layers, and AI pipelines reducing manual workflow time by 70%+
Senior Fullstack Developer
LB Solutions · Remote
Jan 2026 — Present
Architected LB Solutions, a unified Commerce OS that converges product launches (NewDrop), checkout flows (HeroCart), and team operations (LB Platform) into a single ecosystem
Developed InboxFlow, an autonomous hybrid-AI email agent that auto-triages 24 categories, flags urgent threads, and executes contract review using unified Engram memory
Engineered the NewDrop product engine to automate catalog generation and SEO copy, reducing product launch time to <3 minutes and saving 40+ hours per team weekly
Built real-time logistic sorting, Kanban management, and an integrated Finance Hub, contributing to a 98% team sync rate and a 340% revenue lift for core commerce clients
Engineered LB Tracking, a premium post-purchase tracking platform for Shopify dropshippers featuring native webhook integration, custom CNAME domains, and fully branded order pages
Implemented Carrier Masking algorithms powered by 17track API (2,400+ global carriers), hiding supplier origins and converting Chinese logistics traces into a premium branded customer journey
Mid-Level Fullstack Developer
AtivaRecargas.com · Remote
Oct 2025 — Dec 2025
Acted as the sole developer for the platform, architecting and shipping end-to-end website features, complex cron jobs, and seamless database updates
Executed core PHP backend maintenance while delivering modern front-end upgrades, including dynamic background animations and comprehensive visual overhauls
Junior Programmer
Integrum Inteligência Industrial · Hybrid
Sep 2024 — May 2025
Developed industrial ERP system using Delphi with Firebird database, serving 100+ enterprise clients
Built LLM-powered documentation chatbot using OpenAI API, reducing ticket resolution time by 45%
Automated documentation pipeline with PasDoc and Jenkins, reducing time from 3 days to 2 hours
Increased test coverage from 20% to 75% with DUnitX and TestComplete
AI Model Evaluator & Trainer
Remotask / Outlier · Remote
Aug 2022 — Jun 2023
Evaluated Large Language Model outputs across complex reasoning, code generation, and NLP tasks
Conducted prompt engineering and RLHF workflows for major AI research labs
Reviewed AI-generated code for correctness, safety, and adherence to best practices
Embedded Firmware Intern
Pramel Equipamentos Eletrônicos · On-site
Jan 2022 — Aug 2022
Developed firmware for PIC, ESP32, and STM32 microcontrollers for industrial applications
Designed PCB layouts and electronic circuits for power monitoring systems
Created machine automation systems for metallurgical industry clients
Freelance Developer & Hardware Enthusiast
Independent Study & Local Clients
Aug 2017 — Dec 2021
Foundational period of study and specialization, building casual freelance platforms and embedded systems for peers and academic instructors.
Embedded IoT & Hardware: Engineered a Three-Phase Softstarter, automated Solar Tracker, and a Smart Traffic controller with full IoT integration
Software Applications: Developed a Smart Recruitment System featuring dynamic, adaptive questionnaires
Local Projects: Delivered diverse software and hardware micro-projects to assist teachers, friends, and community members
🛠️
Technical Stack
Languages
TypeScript ★ (web / all platforms)Python (bots / AI / training)Rust (systems / perf-critical)C# .NET (enterprise / large clients)Go (CLI tools)C (embedded systems)Java (on demand)