Staff Software Engineer • Distributed Systems • Fintech • Healthtech • AI Workflows

Building backend systems that survive growth, failures, and future engineers.
Future engineers usually include me on a random Tuesday.

• 15 years building distributed systems across Python + JVM
• Background in fintech, payments, lending workflows, orchestration, and observability
• Strong interest in functional programming, AI workflows, and developer tooling
• I care a lot about SOLID, testability, explicit design, and maintainable architecture

• Re-architected critical payment flows from batch-style processing to event-driven systems
• Designed backend workflows where correctness, retries, ordering, and failure handling matter
• Built systems and prototypes around Temporal, NestJS, Kotlin, Scala, and Python
• Use side projects to explore FP, domain modeling, workflow orchestration, and code quality

• Reliability over accidental heroics
• Explicit design over hidden behavior
• Testability as part of design, not as an afterthought
• SOLID when it improves cohesion, boundaries, and changeability
• FP ideas when they make code safer and easier to reason about

Languages
Python Kotlin Scala TypeScript JavaScript Elixir Rust Clojure Java

Backend / Architecture
Django FastAPI Flask NestJS Spring Phoenix Akka SQLAlchemy

Distributed Systems / Data
Kafka RabbitMQ Temporal PostgreSQL Redis Elasticsearch

Cloud / Infra
AWS Railway Vercel Docker Kubernetes Datadog Posthog

• Blog: lucasmarques.me
• LinkedIn: linkedin.com/in/marquesds
• GitHub: github.com/marquesds