# Erik Cunha — Senior Full-Stack Engineer · Applied AI

> Full-Stack Engineer with 8+ years shipping production AI systems
> and high-scale frontend architecture. Currently building the frontend
> platform for Raylu.ai (New York, remote) — an AI-native deal-origination
> engine used by 45+ private-market funds representing $500B+ in AUM. Prior:
> PCI-DSS payments at Betsson Group (€1B+ ARR, 40M+ tx/yr, EU-regulated).
> Impact at scale: 8M+ MAU e-commerce (Nike Brazil), 70M+ banking customers
> (Itaú Unibanco), enterprise healthcare (Canon Medical).
> Targeting Senior, Staff, or Principal IC roles at AI-forward product
> companies. Based in Brazil (UTC-3), fully remote, open to relocation with
> sponsorship. English C1, WES-verified.

## Availability

- Status: Actively exploring new opportunities
- Location: Campinas, São Paulo, Brazil (UTC-3)
- Remote: Yes — currently working remotely for a New York AI startup
- Relocation: Open, requires visa sponsorship
- Target role: Senior / Staff / Principal IC — Applied AI & Full-Stack
- Work authorization: Brazilian national. WES-verified academic credentials. English C1.
- Contact: erikhenriquealvescunha@gmail.com | +5519997049125

## AI Engineering

Shipping production LLM, RAG, and multi-agent systems since 2024:

- Streaming LLM endpoint: Vercel AI Gateway + Anthropic Claude Haiku 4.5,
  ephemeral prompt caching, cost tracking, token budget management
- Multi-agent orchestration: 12-agent GitHub Copilot system deployed to
  engineering team at Betsson Group — automating code generation, review,
  debugging, testing, and architectural validation across a €1B+ ARR platform
- Prompt engineering at production scale: structured output, tool use,
  function calling, context window management
- RAG pipeline design, GenAI feature integration, AI evaluation loops
- AI cost optimization: prompt caching strategies, model selection for
  latency/cost trade-offs

Keywords: LLM Engineering · RAG · Generative AI · Multi-Agent Orchestration ·
Anthropic Claude · Function Calling · Context Window Management · Prompt Caching ·
Streaming LLM · AI Evaluation · LLM Cost Optimization

## Impact at Scale

- -97.5% API latency — reporting endpoints from ~40s → <1s (query + indexing)
- -98% CSS bundle reduction (Canon Medical Systems)
- -52% Time to Interactive improvement (Canon Medical Systems)
- -33% JavaScript bundle reduction (Canon Medical Systems)
- -32% page load reduction (Nike Brazil / Centauro)
- +10% conversion rate via 20+ A/B experiments (Nike Brazil)
- -80% platform delivery cost — shared cross-platform codebase (MB Labs)
- €1B+ ARR cashier platform (Betsson Group, 40M+ transactions/yr)
- 8M+ monthly active users (Nike Brazil + Centauro)
- 70M+ customers served (Itaú Unibanco banking platform)
- 12-agent AI system deployed to production engineering team

## Technical Skills

Applied AI: LLM Engineering · RAG · Generative AI · Multi-Agent Orchestration ·
Anthropic Claude · Prompt Engineering · Prompt Caching · Streaming LLM ·
Function Calling · Context Window Management · LLM Cost Optimization · AI Evaluation

Frontend: TypeScript (strict) · React 19 · React Server Components ·
Next.js 16 (App Router) · Angular · RxJS · NgRx · Redux · StencilJS ·
Web Components · Vue.js · Ionic · SSR/SSG · Micro-Frontend Architecture

Backend & APIs: Node.js · Express.js · REST APIs · WebSocket (STOMP/SockJS) ·
Python · Backend for Frontend (BFF)

Architecture: Clean Architecture (DDD 4-layer) · Nx Monorepo ·
Component-Driven Architecture · Reactive Architecture

Cloud & DevOps: AWS (S3 · CloudFront · EC2 · CodePipeline · CodeBuild) ·
Docker · NGINX · GitHub Actions · Jenkins · CI/CD

Data: PostgreSQL · MongoDB · Redis · SQL · SQLite

Testing: Playwright · Vitest · Jest · React Testing Library · MSW · WireMock

Performance & A11y: Core Web Vitals · WCAG 2.1 AA · ARIA · Lighthouse CI

## Professional Experience

| Period | Company | Role | Scale |
|---|---|---|---|
| 06/2026–present | Raylu.ai (New York, remote from Brazil) | Senior Software Engineer | 45+ private-market funds · $500B+ AUM · AI deal origination |
| 03/2025–05/2026 | Betsson Group (EU, remote from Brazil) | Senior Software Engineer | €1B+ ARR · 40M+ tx/yr · 15+ regulated markets |
| 04/2023–02/2025 | Canon Medical Systems (remote) | Senior SE Consulting | Enterprise healthcare · multi-site hospital ops |
| 12/2021–04/2023 | Grupo SBF — Nike Brazil / Centauro | React Engineer | 8M+ MAU · LATAM's largest sports retailer |
| 01/2021–12/2021 | Encora — VMware Pathfinder | Frontend Engineer | 2.1M+ labs · multi-region |
| 04/2020–01/2021 | Zup Innovation — Itaú Unibanco | Frontend Engineer | 70M+ customers · Latin America's largest bank |
| 11/2019–04/2020 | Venturus — CCR AutoBAn | Frontend Engineer | 320km highway operations · real-time telemetry |
| 02/2019–11/2019 | Venturus — CGO Assessoria | Full Stack Engineer | -97.5% API latency · MEAN stack |
| 09/2018–02/2019 | MB Labs — SM Aprendizagem | Mobile Developer | 5-OS cross-platform · -80% delivery cost |
| 07/2018–09/2018 | MB Labs — Hondana | Full Stack Developer | Enterprise chatbot · Cia Hering · KPMG |
| 10/2017–05/2018 | Monde Sistemas | Frontend Engineer (Vue.js) | 2,200+ travel agencies |

## Industries

- iGaming / Regulated Markets — PCI-DSS, 15+ jurisdictions, €1B+ ARR
- E-commerce — 8M+ MAU, multi-brand, LATAM
- Banking / Fintech — 70M+ customers, digital banking
- Healthcare — enterprise hospital operations, WCAG 2.1 AA
- EdTech — 5-OS offline-first educational platform
- HR-tech / Corporate Training — enterprise chatbot (Cia Hering, KPMG)
- SaaS / CRM — travel agency management, 2,200+ clients
- Infrastructure / Logistics — highway ops dashboards, real-time telemetry

## Education

- Web Development Specialist Co-op Diploma — CICCC, Vancouver, Canada (2023–2024)
- Bachelor's in Information Systems — UNISAL, Campinas, Brazil (2015–2020)
- WES Verified International Academic Qualifications (2022)
- Angular Developer Certification — Alain Chautard, Google Developer Expert (2024)

## Languages

- Portuguese: Native
- English: C1
- French: A2
- Spanish: B1

## Community

- DevOpsDays Campinas 2024 — Organizer
  Speaker sourcing and program curation, 10+ talks across DevOps,
  cloud infrastructure, and platform engineering

## Links

- [Portfolio](https://www.erikunha.dev): Live site with streaming AI terminal,
  performance receipts, and full project showcase
- [GitHub](https://github.com/erikunha): Open source projects
- [LinkedIn](https://linkedin.com/in/erikunha): Full professional history
- [Hiring profile API](https://www.erikunha.dev/api/erik.json): Machine-readable
  hiring profile (JSON)

## Design System

Published design system at /design-system. Covers:
- Two-tier token pipeline (primitives to semantic tokens as CSS custom properties in app/css/theme.css)
- 9 primitive components (Field and CopyButton are client for form interactivity and clipboard access; the rest are RSC): Button, Field, Badge, CopyButton, TerminalPanel, StatTile, CmdLine, KbdKey, WindowChrome
- Enforcement: boundary lint, no-magic-values lint, contrast check, all in CI
- Docs: /design-system/tokens, /design-system/components, /design-system/enforcement, /design-system/changelog