CESAR LEON

Curriculum Vitae

Cesar Leon

Senior Software Developer · over a decade shipping enterprise and startup software across fintech, healthcare, civic ops, and automation.

Remote · LATAM / Global+54 11-4025-2034cesar.andres97@hotmail.com
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Mar 2024 - Present

Software Developer (Consulting Collective)

Toptal

  • RIPL payroll: Python + Next.js approvals, E2E coverage with Playwright.
  • FlexBets: NBA/NHL odds integrations in Spring Boot; unified inheritance model.
  • FICO: Architected license portal (Java, Angular, MySQL) with Terraform + GitHub Actions CI/CD.
  • Fintivio: Banking onboarding platform on AWS (SST, Lambda, RDS, Route53).
  • Omnios-Health: Unified EHR ingestion (Epic, Cerner) via Node.js + Next.js SDK.
  • Golden Camel: React Native betting app backed by AWS Serverless/Lambda/EKS.

Feb 2022 - Mar 2024

Software Engineer

QRA Corp

  • Led UI/UX redesign and delivered Angular Elements SDK.
  • Re-architected Chrome extension for native content experiences.
  • Maintained Java 9 + Spring Boot services and Azure deployments.

Mar 2021 - Jan 2022

Backend Developer

Kenect

  • Built Java/Quarkus microservices with Firebase + MySQL integrations.
  • Shipped no-code integration APIs and supported GCP deployments.
  • Embedded JavaScript snippets into Java via Nashorn for on-the-fly workflows.

Apr 2020 - Mar 2021

Full Stack Developer

Zazmic

  • Optimized Node.js microservices for IDgital radiology platform.
  • Implemented DICOM + HL7 services using GCP Functions, BigQuery, Postgres.
  • Designed Pub/Sub DLQ strategy for reliability.

Sep 2019 - Apr 2020

Software Development Engineer

Grupo Assa

  • Led Java team migrating Equifax Veraz services to GCP microservices.
  • Mentored engineers moving from backend to full-stack.
  • Implemented SAGA-style data consistency patterns.

Dec 2018 - Jul 2019

Senior Node.js Developer

The App Master

  • Delivered Node.js + React/Angular web/mobile apps; maintained native Android fleet.
  • Migrated HomeCloud from AngularJS to Angular 8; set up AWS CI/CD.

Nov 2017 - Dec 2018

Software Developer

Pandora Technologies

  • Led Document Management platform for Lima Stock Exchange (Spring Boot + Angular).
  • Built ERP modules, auth platform, and digital billing tied to tax agencies.

Nov 2015 - Nov 2017

Tech Lead

Automatismos Industriales del Centro

  • Delivered industrial automation with Rockwell PLCs and Kawasaki robotics.
  • Created monitoring solutions via Node.js + Arduino sensors (C++).