Lucas E.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 7, 2026.

𝑺𝒆𝒏𝒊𝒐𝒓 𝑺𝒐𝒇𝒕𝒘𝒂𝒓𝒆 𝑬𝒏𝒈𝒊𝒏𝒆𝒆𝒓 𝒂𝒏𝒅 𝑺𝒚𝒔𝒕𝒆𝒎 𝑨𝒓𝒄𝒉𝒊𝒕𝒆𝒄𝒕 𝒘𝒊𝒕𝒉 10+ 𝒚𝒆𝒂𝒓𝒔 𝒅𝒆𝒍𝒊𝒗𝒆𝒓𝒊𝒏𝒈 𝒃𝒂𝒄𝒌𝒆𝒏𝒅, 𝒄𝒍𝒐𝒖𝒅, 𝒂𝒏𝒅 𝑴𝑳 𝒔𝒚𝒔𝒕𝒆𝒎𝒔 𝒇𝒐𝒓 𝒇𝒊𝒏𝒕𝒆𝒄𝒉, 𝒉𝒆𝒂𝒍𝒕𝒉𝒄𝒂𝒓𝒆, 𝒂𝒏𝒅 𝒆-𝒄𝒐𝒎𝒎𝒆𝒓𝒄𝒆. I design and build distributed backend systems (Java/Spring Boot, Python, Rust, Node.js, Kafka, microservices), cloud infrastructure on AWS and GCP (Terraform, Kubernetes, Docker, CI/CD, Grafana/Istio observability), and production ML pipelines (Spark, TensorFlow, Airflow, Kubeflow). I've led engineering teams of 4 to 15 and own architecture, delivery, and quality end to end. As CTO of Route (now a unicorn) I built the original platform from scratch: React front end, four Spring microservices, Lambda/Kinesis pipelines, and all AWS infrastructure, with a team of 15. At Rightfoot I led the backend team on a real-time bank reconciliation system and a payroll-linked lending product. At LSQ I rearchitected a supply-chain-finance platform into a Spring Boot REST API with JWT auth and full audit trails. At Taulia I introduced Kafka and a dedicated purchase-order microservice to absorb a 50% increase in volume. At Elevance Health I built and operated MLOps pipelines on EKS under healthcare compliance, and through SemaForce I provide SRE, DevOps, and cloud architecture to CMS and Elevance. Engagements: backend and SaaS platform architecture, cloud migration and infrastructure-as-code, ML pipeline design and MLOps, fractional technical leadership, and rescue of systems that have stopped scaling. English, Spanish, Portuguese.