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Renan Spatin

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about

About Renan Winter Spatin

Senior Software Engineer and Tech Lead with 7+ years shipping distributed systems on .NET and cloud, across fintech, banking, legal tech, and Web3.

Senior Software Engineer · Tech Lead

I'm a Senior Software Engineer and Tech Lead with 7+ years shipping distributed systems, high-scale platforms, and event-driven architectures on .NET and cloud (Azure and AWS).

Currently Technical Lead and Software Engineer at Transfero — leading a team of three engineers reporting directly to the CTO and Director, owning the architecture of financial-integration services and the reliability of mission-critical systems.

Previously Tech Lead at BTG Pactual (Latin America's largest investment bank) on the Offshore Onboarding squad, and Software Engineer at Thomson Reuters (DataCloud · legal tech), where I grew from intern to engineer in three years and was recognized twice as Top Professional.

I've worked across fintech, banking, and legal tech — distributed systems, event-driven architecture, messaging, and financial integrations at scale. I also actively use AI-assisted development tools (Claude, Codex, and others) to accelerate architecture and engineering productivity.

On the side, I build and operate independent projects — including the comexaltai.com platform — and I'm pursuing an MBA in Leadership and Management at FGV to strengthen technical leadership and organizational strategy.

off the keyboard§ 02

Off the keyboard: I train jiu-jitsu (blue belt), play guitar, and play tennis as an honest beginner. I'm Catholic — comexaltai.com isn't a client project, it's community.

Two cats at home. An NFC biochip I've had implanted in my hand for a few years (works better than you'd think). And photography when time allows — the photos end up at @rwinterlens.

Stack§ 03

Stack.

Technologies I use in production. .NET and cloud at the core; pragmatic on the rest.

  • Backend & APIs

    Production services in C#/.NET, event-driven architecture, clean domain.

    • C# / .NET (5–9)
    • ASP.NET Core
    • Python
    • Entity Framework Core
    • Dapper
    • REST
    • gRPC
    • Microservices
    • Microkernel · adapters
    • Clean Architecture
    • Hexagonal Architecture
    • DDD
    • Event-Driven
    • FluentValidation
    • Serilog · structured logs
    • Swagger / OpenAPI

  • Frontend & Mobile

    Type-safe, fast, and hybrid mobile when it makes sense.

    • React 19
    • Next.js 16
    • TypeScript
    • Vite
    • Tailwind CSS
    • shadcn/ui
    • Radix UI
    • TanStack Query
    • Zustand
    • React Hook Form
    • Zod
    • Capacitor · hybrid mobile

  • Data & Infra

    Multi-database, multi-cloud, container-first, real observability.

    • Azure
    • AWS
    • Azure DevOps · CI/CD
    • Kubernetes
    • Docker
    • PostgreSQL
    • SQL Server
    • MySQL
    • CosmosDB
    • DynamoDB
    • Redis · cache + rate limit
    • Elasticsearch · text search
    • Azure Key Vault · secrets
    • New Relic · observability

  • Messaging & Integrations

    Kafka/RabbitMQ, payments, transactional email, and applied AI.

    • Kafka · event streams
    • RabbitMQ · workflows
    • Azure Service Bus
    • AWS SQS / SNS
    • Stripe · billing
    • Resend
    • MailKit
    • Google GenAI
    • Claude
    • Codex