Software Engineer

Selton
Murakami.

Full-stack · AI/ML · Cloud Infrastructure

Building AI-powered SaaS platforms end-to-end — from ML inference to cloud deployment. Based in Brazil, working remotely with US teams.

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01 — About

Engineer who
ships products.

I design and build full-stack systems from prototype to production — backend APIs, ML pipelines, frontend interfaces, and the cloud infrastructure underneath it all. I've led platform architecture across multiple client deployments, managing CI/CD, IaC, and small engineering teams.

Core stack: Rust, Python, TypeScript, PostgreSQL, GCP, Terraform, Docker. Deep experience with ML pipelines, RAG systems, and third-party integrations.

GitHub LinkedIn Email
02 — Experience

Where I've
built things.

Lead Software Engineer Dec 2022 — Present
Expanse4D
  • Led development of the core product from prototype to production
  • Built and manage ML infrastructure, model training pipelines, and dataset curation workflows
  • Improved inference accuracy through custom post-processing techniques, significantly reducing output artifacts
  • Designed and deployed the full-stack application on GCP with Terraform IaC
  • Led major architecture refactoring, decomposing monolithic systems into modular components
  • Coordinate across a distributed team of ML researchers, frontend devs, and annotators
Software Engineer Jul 2023 — Present
Revvnue
  • Designed and built a unified multi-tenant platform with RBAC and plugin-based architecture
  • Built AI-powered automation modules for proposal generation, quote processing, accounts payable, and B2B sales outreach
  • Implemented RAG pipelines, document parsing, and third-party integrations (CRM, ERP, e-commerce)
  • Built knowledge base indexing system with vector embeddings and async processing
  • Managed full GCP infrastructure with Terraform IaC and CI/CD
  • Integrated observability with error tracking and LLM tracing
Freelance Software Developer May 2021 — Jun 2024
Independent
  • Full-stack development: Vue 3, React, FastAPI, Node.js
  • Shopify app development with PDF export, cloud storage, and ORM integration
  • Data analysis and reporting dashboards
  • Multi-source analytics platforms integrating CRM and marketing APIs
03 — Skills

Tools of
the trade.

Languages
Python Rust TypeScript JavaScript Go SQL
Frameworks
FastAPI Vue 3 React Flask Three.js Celery
AI / ML
LLM Integration ONNX Runtime Computer Vision RAG pgvector LangChain
Cloud & Infra
GCP Terraform Docker Cloud Run Cloud SQL CI/CD
Databases
PostgreSQL Redis SQLite SQLAlchemy Alembic
Spoken
Portuguese (native) English (proficient) Japanese (basic)
04 — Contact

Let's build
something.

Open to remote software engineering opportunities.
Reach out — I'd love to hear what you're working on.

selton@caipira.dev GitHub LinkedIn