# Leandro Kuranaga, Backend & AI Engineer

> Backend & AI Engineer with 8+ years building .NET and Azure distributed systems, and 2+ years shipping AI-powered features to production. Builds custom agent tooling from scratch (MCP servers, subagents, hooks and skills) rather than only consuming frameworks. Based in Indaiatuba, São Paulo, Brazil. Remote, UTC-3, overlapping European mornings and the full US workday. Open to opportunities.

## Positioning

Event-driven backend engineering is the foundation; the AI layer runs on top of it inside enterprise .NET platforms, not as a side experiment.

## AI & Agentic Engineering

- Custom agent tooling: authored MCP servers, subagents, hooks and reusable skills on the Claude Agent SDK
- Harness & loop engineering: CLI-first agentic pipeline adopted by the team: design context via MCP, automated code review, Playwright E2E, spec-driven delivery
- Prompt & context engineering: conventions versioned in Git (CLAUDE.md, AGENTS.md); per-task model selection by task profile and cost
- Evaluation & guardrails: regression prompt suites, deterministic assertions over structured responses, automated review gates blocking off-spec generations before merge
- AI security: least-privilege tool scoping, human-in-the-loop approval, prompt injection and data leakage mitigation
- Retrieval: Azure AI Search (indexed/semantic search), RAG patterns: chunking, embeddings, vector search
- Azure AI Foundry, Microsoft Semantic Kernel, OpenAI Codex/GPT, GitHub Copilot
- AI in production: industrial optimization with AI/ML algorithms, cutting manual calibration time 40%

## Backend & Cloud

- .NET 8 / .NET Core, C#, ASP.NET Core, REST APIs, Entity Framework Core, SignalR
- Event-driven architecture, CQRS, DDD, microservices, clean architecture
- Azure (Service Bus, Functions, AI Search), AWS, Terraform, Docker, CI/CD
- Apache Kafka, Azure Service Bus, RabbitMQ
- SQL Server, PostgreSQL, Redis, InfluxDB, MongoDB, Elasticsearch
- Python, TypeScript, React, Angular
- Test-first: xUnit, integration testing, Playwright and Cypress E2E

## Experience

- Andritz (May 2024 - present). Software Engineer. AI/ML industrial optimization (-40% manual calibration), InfluxDB migration (3x faster time-series queries), Kafka integrations, Python automation, standardized the team's AI-assisted pipeline. Works daily in English with teams in Germany and Canada.
- Stefanini, client Raízen (Aug 2022 - May 2024). Fullstack Engineer. Built CSOnline (csonline.com.br), an enterprise platform serving 13,000+ monthly users, integrating SAP, Salesforce and Pix over Azure Service Bus with Redis caching. Extended to AWS.
- Sonda (Jan 2019 - Aug 2022). Software Developer. Conversational systems and process automation in .NET for Claro, Vivo, Embraer and Sodexo, intent handling, dialog flows, fallback routing.

## Key numbers

- 8+ years shipping to production
- 13,000+ monthly users on CSOnline
- 3x faster time-series queries after the InfluxDB migration
- 40% less manual calibration time via AI/ML optimization

## Education

- Postgraduate in Quantum Computing, PUC Minas (from Sep 2026)
- Specialization in Software Architecture, FIAP, 2026
- Postgraduate in Software Engineering, PUC-SP, 2025
- B.Sc. Computer Science, UNIP, 2020
- Portuguese (native), English (professional working proficiency, daily use)

## Availability

- Remote, based in Indaiatuba, São Paulo, Brazil
- Contract work through Kuranaga Consultoria e Assessoria em Informática LTDA (active since September 2025), and open to full-time roles

## Pages

- [Home](https://www.lkuranaga.com/)
- [Systems](https://www.lkuranaga.com/#projects)
- [Case study: Industrial optimization on Kafka, InfluxDB and AI/ML](https://www.lkuranaga.com/projects/andritz/)
- [Case study: Event-driven integration on Azure Service Bus: SAP, Salesforce and Pix](https://www.lkuranaga.com/projects/csonline/)
- [Case study: Conversational automation in .NET for national-scale support](https://www.lkuranaga.com/projects/sonda/)
- [Full page content](https://www.lkuranaga.com/llms-full.txt)
- [Versão em português](https://www.lkuranaga.com/pt/)
- [AI & Agentic Engineering](https://www.lkuranaga.com/#ai)
- [Experience](https://www.lkuranaga.com/#experience)
- [Stack](https://www.lkuranaga.com/#stack)
- [FAQ](https://www.lkuranaga.com/#faq)
- [Contact](https://www.lkuranaga.com/#contact)

## Contact

- Email: le.s.kuranaga@hotmail.com
- LinkedIn: https://www.linkedin.com/in/leandrokuranaga/
- GitHub: https://github.com/leandrokuranaga