Gabriel Luz

Full-Stack Engineer

BossaBox • Full-time

Aug 2024 - Mar 2026 • 1 yr 7 mos

• Led the strangler-fig migration of a 10+ year Ruby on Rails legacy system (SaudeSimples / OM30) to a modern, modular architecture using Rails, Vue.js and Clean Architecture patterns. • Drove progressive migration of critical modules (scheduling, registrations, public integrations), reducing technical debt and accelerating feature throughput. • Delivered full E2E features in Rails/Node + React/Vue with Docker, PostgreSQL and Redis; standardised module structure and established foundations for continuous evolution. • Implemented observability (Sentry, structured logs, metrics) and feature-flag/rollback standards across services. • Built CI/CD pipelines with lint, automated tests and preview environments. • Designed robust third-party integrations (government APIs) with retry logic, DLQ and idempotency guarantees. • Built an AI-first SaaS platform for delivery management in software consultancies, acting as founding engineer from architecture to deployment. • Designed the back-end with Python, FastAPI and SQLAlchemy; used Alembic for versioned database migrations and a clean, modular service structure. • Integrated Agno framework for multi-agent orchestration, connecting multiple LLM models to automate delivery tracking, status reporting and workflow insights. • Implemented async pipelines and API layer covering the full platform lifecycle, from infrastructure setup to agent-driven workflow automation. Stack: Ruby on Rails · Vue.js · RabbitMQ · Python · FastAPI · SQLAlchemy · Agno · PostgreSQL · Docker

Full-Stack Software Engineer · Remote

Wake • Full-time

Jan 2023 - Feb 2025 • 2 yrs 1 mo

• Developed marketing automation and orchestration products for SMBs using Vue.js (Vite), NestJS, Node.js, AWS and Ruby on Rails, with focus on scalability and end-user autonomy. • Built event-driven campaign system (SMB platform): triggers on customer signup, purchase and cart abandonment, dispatching email, WhatsApp and SMS with dynamic rules and scheduling. • Evolved Wake Workflow, a drag-and-drop visual builder for complex customer journeys · implementing condition nodes, delays and multi-path branching (e.g. opened email → coupon; not opened → re-engagement after N hours). • Developed advanced Vue.js components with state management and real-time front-end/back-end synchronisation to ensure trigger-execution consistency. Stack: Vue.js · NestJS · Node.js · MongoDB · AWS · Ruby on Rails

Full-Stack Software Engineer Remote

PicPay • Full-time

Jun 2022 - Aug 2023 • 1 yr 2 mos

• Worked in the Consigned Credit Tribe, shipping features for Credit Portability and high-complexity financial flows in high-reliability, asynchronous systems. • Implemented async routines with Sidekiq, cron jobs and AWS Lambda, ensuring idempotency and resilience across banking operations. • Integrated external services via Kafka and financial APIs, designing contracts and fault-handling pipelines with retries and DLQ. • Optimised critical endpoints (caching, N+1 elimination, batching) and tracked quality via Sentry, metrics and alerting. • Instrumented user funnels and behavioural events in PostHog; built Metabase dashboards for KPI tracking and data-driven product decisions. Stack: Ruby on Rails · React.js · TypeScript · AWS Lambda · Kafka · Sidekiq · PostgreSQL · PostHog