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Marcelo Mariano

Backend Engineer

Colina, State of São Paulo, Brazil
Senior software engineer with 13+ years' experience working across the entire software development lifecycle, designing and implementing from small to large-scale projects ranging from centralized to distributed, microservice-based systems.


Staff Software Engineer

PicPay (https://picpay.com/)

Full time contract4/2022 - 12/2022
  1. Led a team of 2 peers in the development of a cash-back payment system for the PicPay Store, resulting in an 80% reduction in manual payment and saving 16 hours a week
  2. Led a team of 4 peers in the design and implementation of the communication protocol between the order processing system and the cash back system, enabling cash-back payments to be made in real time
  3. Developed a build system for the cash-back team's projects, enabling engineers to setup a development environment in a 100% automated way, increasing the team's productivity by 50%
Senior Software Engineer

Tino (https://tino.com.br/)

Full time contract11/2021 - 4/2022
  1. Led a team of 4 engineers in the process of gathering the technical requirements of the company's receivables management system, resulting in a technical specification that covered 100% of the product requirements
  2. Led a team of 2 peers in the design and implementation of a communication gateway for the Brazilian Financial Market Infrastructures, enabling the receivables management system to communicate with TAG, CIP and CERC
  3. Designed and documented the architecture of the receivables management system, resulting in a 30% reduction in onboarding time for new members
Tech Lead

Zak (https://zak.app/)

Full time contract5/2021 - 11/2021
  1. Supervised and led a team of 8 peers in the development of a robust upgrade for the consumer's app, resulting in 40% revenue increase in 5 months
  2. Created and led a team of 2 peers to design and implement an event-driven communication protocol with the POS and kitchen services, achieving a 20% availability increase in the consumer's app
  3. Optimized the CI/CD pipeline of the consumer's app, decreasing the deployment time from 30 to 5 minutes
  4. Coordinated with engineering managers and project managers to ensure the team release schedules were aligned with product schedule needs
Staff Software Engineer

Luizalabs (https://www.magazineluiza.com.br/)

Full time contract7/2020 - 4/2021
  1. Led a team of 7 peers in the development of the new version of company's product registration system, which could import large product datasets in minutes, being 4x faster than the old version
  2. Designed and implemented the registration mechanism for the product registration system, making it possible to import product catalogs from other sellers in a 100% automated way
  3. Implemented the minimum inventory value feature for the fulfillment system, ensuring that distribution centers always operate with positive inventory
Software Engineer

Reis Advogados (https://www.reis.adv.br/)

Full time contract8/2019 - 6/2020
  1. Designed and implemented the new version of the company's lawsuit data processing system, which can process gigabytes of data and generate reports within 30 minutes, being 6x faster than the legacy version
  2. Designed and implemented an attorney fee collection system that automated the process of charging clientes, resulting in a 100% reduction of manual work
  3. Designed and implemented a lawsuit registration system that allowed searching different external data sources and registering the information obtained in the company's database, resulting in a 50% reduction in manual work
  4. Conducted presentations on engineering topics and provided technical guidance to the team on Python, architectural patterns and coding best practices.


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Skill Verification


PythonGolangAlgorithmsData structuresOOPSoftware design


Senior-level8+ years

Hourly rate


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