Caio Theodoro Caio Theodoro

Senior AI Engineer

Adopt AI · Full-time

Mar 2026 – Present · 5 mos

California, United States · Remote

Production AI workflow infrastructure: agent execution, human review, evaluation, and orchestration.

  • Agent Execution Harness: Architected the core runtime — turn and message lifecycle, idempotent claim semantics, and replay-safe Temporal orchestration. Every agent capability the platform ships (HITL, policies, evals, generative UI) runs on it.
  • Live Evaluation Dashboard: Built production conversation-quality scoring that surfaces degradation early enough to intervene before customers feel it.
  • Human-in-the-Loop Interventions: Shipped the escalation system end to end — a signal-driven resolve state machine with optimistic locking and tenant isolation, a 3-action resolution model, and the Temporal signal contract wiring escalations into live agent workflows.
  • Generative UI Architecture: Designed a registry of approved components the harness selects from instead of generating markup each turn, cutting dashboard prompts from roughly 15k tokens to 700–2k; a JSON-Patch delta protocol saved 90% on multi-turn follow-up edits.
  • Policy Engine & Multi-Model Inference: Built agent guardrails with policy-version pinning and full audit logging, and integrated AWS Bedrock behind one selection interface, cutting latency and cost through provider routing and prompt caching.

Advisor

Avenza · Self-employed

Mar 2026 – Present · 5 mos

Remote

Advising on technical direction, architecture, and client delivery oversight for the studio I founded.

  • Technical Direction: Advise on architecture, technology choices, and engineering standards for the studio I founded.
  • Delivery Oversight: Review client engagements and solution designs without day-to-day execution ownership.

Senior Software Engineer

Acorns · Full-time

Jul 2025 – Mar 2026 · 8 mos

California, United States · Remote

Servicing platform modernization at a consumer fintech serving millions of users, during the move from a Rails monolith to Node services, React frontends, and a GraphQL gateway.

  • Full-Stack Delivery: Shipped production changes across Rails, Node services, React, Next.js, and GraphQL APIs throughout a phased monolith-to-microservices migration.
  • Internal Tooling: Built GraphQL-driven admin and support tooling giving operations teams direct visibility into servicing workflows, and resolved gateway schema and data-consistency failures introduced by splitting Rails-owned data across independent services.
  • Ephemeral Environments: Shipped per-PR environments to production, closing the staging/production parity gap that had been a recurring source of regressions.
  • Regression Coverage: Partnered with platform and QA to extend automated regression coverage across the new Node services, reducing cutover risk during the migration.

Founder & Senior AI Engineer Consultant

Avenza · Self-employed

Feb 2025 – Mar 2026 · 1 yr 1 mo

Remote

Founded and led an AI consulting and product studio, run in parallel with full-time roles: agents, computer vision systems, analytics platforms, and automation infrastructure delivered to outside clients.

  • Team & Technical Direction: Directed a 7-engineer team across client discovery, solution architecture, delivery, and engineering standards.
  • Production AI Agents: Architected agents across logistics, customer support, operational workflows, and computer vision analysis, built on structured outputs, retrieval, model-backed classification, and human review loops rather than raw prompt calls.
  • Foreign-Exchange Automation: Delivered end-to-end software and automation for a foreign-exchange house covering operational workflows, back-office processing, and third-party integrations.
  • Analytics & Automation Platforms: Designed platforms spanning data ingestion, dashboards, paid-traffic systems, and business reporting.
  • Revenue Impact: Delivered systems tied to roughly $2.8M USD in client revenue over 8 months.

Software Engineer

MB Labs · Full-time

Aug 2022 – Jul 2025 · 2 yrs 11 mos

Remote

Cloud-native products, data systems, and architecture consulting across fintech, education, content, and supply-chain clients.

  • Cloud Infrastructure & Performance: Built production systems on AWS (ECS, RDS, ElastiCache, S3, CloudFront, ALB) with Cloudflare and Redis for low-latency fintech workloads serving millions of users.
  • Microservices & High-Availability: Designed microservices and APIs for high-traffic clients; connection pooling and regional caching cut latency, then right-sizing compute brought infrastructure spend down.
  • Event-Driven Data Pipelines: Architected SQS and async-worker pipelines for compliance-grade fintech operations.
  • Key Clients: GS1, ANBIMA, YOU, Engagx, Evolucional, Panorama.

Analyst / Software Engineer

Mactus Informatica · Full-time

Jun 2021 – Jul 2022 · 1 yr 1 mo

Campo Mourão, Paraná, Brazil

Built business systems, internal tools, and modernization work for operational software.

  • Legacy System Modernization: Modernized legacy applications and improved stability for critical workflows.
  • Cloud-Ready Architecture: Designed cloud-ready services with clearer performance, maintenance, and cost boundaries.

Intern / Full-Stack Developer

ATLA Ensino · Internship

Dec 2020 – Jun 2021 · 6 mos

Campo Mourão, Paraná, Brazil

Built data extraction, API, and back-office systems for education operations.

  • Data Extraction & Processing: Built Python scrapers that processed 5,000+ records per day.
  • API Development: Developed REST APIs for internal data workflows.