Wanderson Chaves

Backend engineer with approximately five years of professional experience modernizing legacy platforms, building cloud-hosted services, and delivering payment and multi-tenant systems. Hands-on with TypeScript/NestJS, Python/Django, Java/Spring Boot, AWS, PostgreSQL, and asynchronous messaging. Has led three application migrations and contributes to architecture, code reviews, technical decisions, and production delivery.

Software Engineer III at SimWorx (2023-07 – 2026-08)

Client: Petrobras | Promoted directly from Software Engineer I to III in May 2025

• Led a three-engineer team through the end-to-end modernization of 3 of 4 legacy Python/Django applications to Python 3.12 and Django 4.2, defining architecture, allocating work, reviewing implementations, and coordinating delivery.
• Implemented all application-side components for migrating asynchronous well-analysis workloads from RabbitMQ to Amazon SQS, while a separate infrastructure team provisioned the AWS services.
• Cut Jenkins deployment time by approximately 55%, from 22 to 10 minutes, by moving large media assets from source control to Amazon S3 and downloading them once during builds after a GitLab-to-GitHub migration.
• In a Java/Spring Boot project, resolved an infinite loop in InfoPoco's paginated well-analysis workflow by isolating failures per well, allowing processing to continue across 1,000+ wells while improving error messages and data delivery.
• Deployed and troubleshot containerized services on AWS ECS/ECR across development, staging, and production; managed environment variables, reproduced cloud containers locally for log analysis, reviewed pull requests, refined tasks, and contributed to technical decisions.

Software Engineer (Contract) at GEN (2024-12 – 2025-06)

Concurrent fixed-term contract engagement

• Designed and released Pix and BolePix payment methods with NestJS, Prisma, PostgreSQL, and Celcoin APIs, introducing new payment capabilities for GEN's customers.
• Built split-payment workflows and production webhook processing for Pix-related transaction lifecycles.

Software Engineer (Contract) at Hero99 (2022-08 – 2023-03)

• Built multi-tenant backend services with NestJS and MongoDB for a customer-operated platform serving active accounts across healthcare and education.
• Developed Dialogflow intents, fulfillment logic, webhooks, integrations, and conversational flows for customer-facing chatbot experiences on Google Cloud Platform.

Software Developer (Contract) at NSH Technologies (2022-01 – 2022-08)

• Developed catalog, order, payment, inventory, and administrative modules for an e-commerce platform delivered to a Nicaraguan company using Node.js and Angular.

Junior Developer (Part-Time Contract) at DeepLegal (2021-06 – 2022-05)

• Built features and React components for a legal analytics platform that consumed outputs from AI components; implemented GraphQL queries, mutations, and resolvers for frontend consumption using Python, Node.js, React, and GraphQL.

Junior Developer (Part-Time Contract) at Planos Assessoria (2021-06 – 2021-12)

• Contributed to migrating legacy PHP functionality to Node.js and React and developed features for an accounting system used by client businesses.

Technology Degree in Systems Analysis and Development – Universidade Paulista (UNIP) (2019-02)