FOZ DO IGUAÇU, BRAZIL // 6+ YEARS FULL-STACK & ARCHITECTURE (.NET • REACT • REACT NATIVE)

Diogo Magrini Furmann — Senior Software Engineer & Systems Architect.

In the AI era, syntax is a commodity—architectural judgment, battle-tested systems intuition, and product craftsmanship are the real leverage. With 6+ years of full-stack engineering rooted in deep JavaScript/TypeScript (React, Next.js, React Native) and .NET Core (C#) runtime foundations, I architect resilient industrial platforms at H2O Innovation and build cohesive digital products from first principles.

EXPLORE ARCHITECTURAL CASE STUDIES LINKEDIN

6+ YEARS EXP. JS/TS & .NET CORE RUNTIMES

H2O INNOVATION NORTH AMERICA PLATFORM LEAD

MBA + CANADA UTFPR MBA • UOIT EXCHANGE

01 // RUNTIME FOUNDATIONS & ARCHITECTURAL CASE STUDIES

Under-the-Hood Runtimes & Systems Shipped

CORE RUNTIME 01 // JAVASCRIPT & TYPESCRIPT V8 • HERMES • REACT • NEXT.JS

Event Loop Concurrency, Memory Discipline & Shared Type Contracts

Deep command of the JS/TS execution model across browser, Node.js, and React Native: preventing main-thread blocking and render thrashing in live telemetry/trading UIs, orchestrating deterministic state machines, and enforcing end-to-end type safety between frontend clients and backend APIs.

V8 & Event Loop React.js & Next.js SSR React Native Mobile Strict TypeScript Contracts

CORE RUNTIME 02 // .NET CORE (C#) & DATA CLR • REST • MULTI-DB ARCHITECTURE

High-Throughput .NET Core Backends & Relational/Time-Series Engines

Enterprise-grade backend engineering in C# / .NET Core: non-blocking async I/O without thread-pool starvation, Clean/Domain-Driven Design (DDD) for legacy consolidation, and query-level optimization across relational (PostgreSQL, SQL Server, Oracle) and time-series (InfluxDB) stores.

.NET Core (C# / CLR) Domain-Driven Design PostgreSQL • SQL Server • Oracle InfluxDB Time-Series

CASE STUDY 01 // INDUSTRIAL CONSOLIDATION H2O INNOVATION (NORTH AMERICA)

N-to-1 Unified Platform Architecture for Industrial Water Treatment

Challenge & Context: Multiple disconnected operational apps across North American water treatment plants caused data silos and duplicated business rules. Designed a unified domain architecture in .NET Core (C#) with shared TypeScript contracts powering both a React.js control center and a React Native field mobile suite.

◆ ARCHITECTURAL DECISION & TRADE-OFF (STRANGLER PATTERN) Instead of a risky "big-bang" rewrite that could disrupt live plant operations, isolated core domain bounded contexts in .NET Core and introduced shared TypeScript DTO contracts—allowing incremental migration of N legacy apps into 1 platform with zero downtime.

.NET Core (C#) React.js & React Native Shared TS Contracts Strangler Pattern

N → 1 UNIFIED SYSTEM CONSOLIDATION

WEB + MOBILE SHARED TYPESCRIPT & .NET CORE

NORTH AMERICA INDUSTRIAL PLANT OPERATIONS

// SYS-BLUEPRINT 01: N→1 STRANGLER & UNIFIED CORE H2O INNOVATION

CASE STUDY 02 // REAL-TIME & MISSION-CRITICAL SYSTEMS AVANADE & ITAIPU PARQUETEC

Cross-Platform Trading Architecture & Real-Time IoT Fleet Telemetry

Challenge & Context: Mission-critical environments demand deterministic state synchronization across web, mobile, and hardware sensors. At Avanade, defined the stack and architected an end-to-end trading platform in Next.js, React Native, and .NET; at Itaipu Parquetec, engineered a real-time vehicle telemetry and IoT ingestion REST architecture.

◆ ARCHITECTURAL DECISION & TRADE-OFF (CONCURRENCY & BACKPRESSURE) Decoupled high-frequency IoT/market ingestion from client rendering using asynchronous .NET channels, idempotent REST endpoints, and batched state updates in Next.js/React Native—preventing V8/Hermes UI frame drops under peak telemetry bursts.

Next.js & React Native .NET Core Concurrency IoT Hardware Ingestion Idempotent REST APIs

REAL-TIME STATE & TELEMETRY SYNC

FULL-CYCLE STACK SELECTION TO DELIVERY

HIGH-LOAD ENTERPRISE & IOT PIPELINES

// SYS-BLUEPRINT 02: REAL-TIME TRADING & IOT PIPELINE AVANADE & PTI

CASE STUDY 03 // DATABASE FORENSICS & AUTOMATION UDC UNIVERSITY CENTER

Observability-Driven Reverse Engineering of Moodle via PostgreSQL Query Logs

Challenge & Context: During the urgent 2020 shift to digital learning, the university needed thousands of virtual classrooms created across every course—but Moodle lacked documentation for bulk relational provisioning. By enabling PostgreSQL statement logging (log_statement), I traced live UI actions into raw SQL mutations, reconstructed the undocumented foreign-key graph from first principles, and scripted an automation engine that provisioned 100% of the university's digital classrooms.

◆ ARCHITECTURAL DECISION & TRADE-OFF (QUERY-LOG FORENSICS) Moodle's 400+ table schema lacked explicit database-level foreign-key constraints, making naive SQL inserts dangerous. Instrumenting log_statement = 'all' in an isolated staging DB captured the exact transactional sequence (mdl_course → mdl_context → mdl_enrol), guaranteeing 100% referential integrity in production.

PostgreSQL Query Logging Relational Graph Forensics Transactional Provisioning Payment Gateway

100% UNIVERSITY CLASSROOMS AUTOMATED

+88% ONLINE ENROLLMENT SURGE (2020)

ZERO-DOC BLACK-BOX SCHEMA RECONSTRUCTION

// SYS-BLUEPRINT 03: POSTGRESQL QUERY-LOG FORENSICS POSTGRESQL LOGS

CASE STUDY 04 // CREATIVE CRAFT & 120FPS DESIGN ENGINEERING TALOS INTERACTIVE & TALOS STUDIO

Multi-Tenant Edge Routing & 120fps GPU-Composited Brand Architecture

Challenge & Context: Proving the 3rd Venn pillar (Creative Craft & Art Direction): architected a dual-domain digital ecosystem (talosinteractive.com for B2B Software Engineering and studio.talosinteractive.com for Interactive Entertainment) served from a single edge codebase with 120fps theatrical motion.

◆ ARCHITECTURAL DECISION & TRADE-OFF (GPU COMPOSITOR & EDGE ROUTING) Pre-decoded high-resolution bronze emblems off the main thread via img.decode() before triggering translate3d() + opacity animations—guaranteeing zero frame drops on 120Hz ProMotion displays while routing subdomains at the Cloudflare Worker edge with zero redirects.

Cloudflare Workers Edge 120fps GPU Compositor Design Systems & Figma Off-Thread img.decode()

120 FPS ZERO MAIN-THREAD REFLOW

DUAL-BRAND EDGE HOST-HEADER ISOLATION

BESPOKE UI ART DIRECTION & DESIGN SYSTEM

// SYS-BLUEPRINT 04: EDGE ROUTER & 120FPS GPU PIPELINE TALOS INTERACTIVE

02 // EXECUTIVE CAREER TIMELINE

Role Progression, Technical Leadership & Scope

NOV 2024 – PRESENT

H2O Innovation

NORTH AMERICA UNIFIED INDUSTRIAL PLATFORM

Platform Architecture & Full-Stack Lead

Owns architectural decision-making for industrial water treatment systems across North America, bridging .NET Core backend services with cross-platform React.js and React Native engineering teams.

Role: Software Engineer .NET Core (C#) React & React Native TypeScript

FEB 2022 – JUN 2024

Avanade

END-TO-END LEAD ENTERPRISE TRADING SOLUTION

Technical Lead — Enterprise Trading Systems

Spearheaded greenfield stack selection, system design, and full-lifecycle delivery for enterprise trading operations within the Microsoft/Accenture ecosystem.

Role: Software Developer Next.js React Native .NET Enterprise

AUG 2020 – FEB 2022

Itaipu Parquetec (PTI)

REAL-TIME IOT FLEET TELEMETRY & CORE API

Core API & Real-Time IoT Fleet Engineer

Designed and maintained high-availability RESTful APIs and cross-platform applications integrating live vehicular IoT hardware telemetry.

Role: Software Developer IoT Telemetry Cross-Platform Apps

AUG 2019 – AUG 2020

UDC University Center

+88% ENROLLMENT 100% MOODLE ROOMS SCRIPTED

Core Academic Systems & Database Automation Lead

Led e-commerce payment gateway integration, CMS architecture, and PostgreSQL database automation that scaled digital enrollment by 88%.

Role: System Analyst PostgreSQL Automation Payment Gateways

03 // POST-SYNTAX AI ENGINEERING & ACADEMIC CREDENTIALS

Deterministic Systems Around Probabilistic AI Models

◆ Applied AI Systems Architecture POST-SYNTAX ERA

Engineering Deterministic Guardrails in .NET & TypeScript

Where AI generates syntax, senior architecture enforces correctness, latency budgets, and schema invariants in production:

Hybrid RAG & Retrieval Pipelines: Architecting domain-specific chunking, vector + keyword hybrid search, and strict citation grounding over enterprise relational data.
Context Window & Token Engineering: Designing prompt compilation layers that prevent context rot, manage latency/cost budgets, and isolate high-signal state.
Typed Agent Loops & Tool Execution: Wrapping LLM tool calls inside strongly-typed TypeScript and .NET Core schema validators with deterministic retry and audit boundaries.

Hybrid RAG Pipelines Typed Schema Guardrails Agentic Workflows TS & .NET Orchestration

◆ Academic Foundation & International Experience UTFPR • UOIT • UDC

MBA in Software Engineering & Canada Academic Exchange

Strong computer science theoretical foundation combined with postgraduate software architecture specialization and international academic immersion in North America:

MBA in Software Engineering — UTFPR (Federal University of Technology – Paraná).
International Academic Exchange — University of Ontario Institute of Technology (UOIT, Canada).
B.S. in Computer Science — UDC University Center, Foz do Iguaçu (2019).

VERIFIED CERTIFICATIONS:

Microsoft AI-900 (2024) Microsoft AZ-900 (2022) ITIL v4 Foundation

04 // DIRECT CONTACT FOR RECRUITERS & TECH LEADS

Let's Connect

Based in Foz do Iguaçu, Brazil · Into chess ♟️, rock & electronic music, and systems that hold up under load.

DMF.DIOGO@GMAIL.COM LINKEDIN