Marcus N. Gabrich
Systems Architect · Tech Lead · Computer Scientist
GitHub: github.com/marcusng8 · LinkedIn: linkedin.com/in/marcusgabrich · ResearchGate: researchgate.net/publication/385262111_Analise_de_Redes_Neurais_para_CRISPR_Uma_Abordagem_com_Computacao_Quantica · marcusnggg@gmail.com
profile
Systems Architect, Tech Lead, and Computer Scientist. At RoiGenius I hold dual technical and executive roles: leading core engineering for a 8-microservice revenue attribution platform (89 integrated platforms, string-based BRL precision) while directing product roadmap, cash flow, and cloud budgeting with General Manager scope. Independent consultant for Assiny (checkout & payments). Builder of a local-first multi-agent AI platform with distributed compute, bi-temporal semantic memory, and deterministic governance.
experience
- Proprietary execution and market-monitoring algorithms (Python/MQL5).
- Ran continuously and unattended on a demo account until a full reset in October 2026, with risk-containment layers that act independently of the strategy logic.
- Tracking/pixel scripts with configurable templates served by a dedicated worker; manual conversion logging.
- Modeled webhook ingestion semantics: refunds, chargebacks, fees.
- Market analysis and competitive positioning reports (2026); API integration advisory.
- End-to-end technical + executive leadership of a Revenue Attribution & Analytics SaaS: engineering direction, product roadmap, cash flow and GCP cost governance.
- Designed 8 TypeScript/NestJS 11 microservices on Google Cloud Run, backed by Cloud SQL PostgreSQL 15 tuned for high concurrency (max_connections=500).
- Built CalculatorRegistryService standardizing financial metrics across 89 ad/checkout platforms with strict string-based BRL arithmetic — zero rounding drift.
- Engineered a self-hosted distributed compute platform: heterogeneous workers with GPU acceleration for reranking and local inference — fully offline, zero cloud dependency.
- Local-first multi-LLM platform behind a unified gateway with complexity- and cost-based routing.
- Bi-temporal semantic memory: knowledge graph + vector store with valid_from/valid_to versioning — queryable history, not just current state.
- Semester average 15.52/20 (Honors), 20 ECTS validated.
- Grade A highlights: Unix (18.02/20), Python (18.74/20), Blockchain & Bitcoin (20/20 — top of class).
- Data ecosystem integration and automation consulting (Intercom, ActiveCampaign, Takeblip).
- Audited and cleaned relational databases; trained teams on data modeling and API governance.
- Technical lead (Clube Utua): architectural restructuring that drove 24.5× revenue and user-base growth.
- Led a multidisciplinary R&D squad: rapid prototyping, agile standards reused org-wide.
- Cross-platform mobile/web engineering with Flutter and JavaScript.
- Teaching assistant for Algorithms & Data Structures I and Web Interface Development.
- Supported students in programming logic, asymptotic analysis, core web technologies.
- Class President (Mar 2021 — Dec 2022).
- HPC research published at SSCAD 2024 (quantum-classical neural networks).
education
languages
- Portuguese — native
- English — full professional fluency
- French — academic (exchange semester at EPITA Paris)
honors
- Discount Leverage — 3rd Place Overall — ABI AcademyHack Ambev (Beer Garage) (Nov 2021). Development lead — modeled consumer profiles and discount elasticity from historical transaction data to maximize LTV and repeat purchases.