Marlon D.

Front-end UX Engineer

Senior Frontend Engineer
6/1/2022 - Present

Led the frontend team and created OAuth and 2FA flows for the new login. Conducted pair programming sessions to share knowledge and created general components for multiple React projects on a monorepo. Collaboratively defined the design system with the designer, and refactored numerous legacy features from Java to React. Managed the onboarding of new frontend team members and authored guidelines on creating unit tests, specifying important aspects to test. Documented procedures for running frontend projects and proposed enhancements to the development pipeline, including feature flags and trunk-based development.

Software Engineer
12/1/2020 - 6/1/2022

Designed and built the My Orders solution, facilitating daily usage by over 15,000 customers. Created a new marketplace using Next.js and React, resulting in a 3.5% increase in the conversion rate. Developed a proximity service that allowed customers to find the nearest stores, boosting order numbers by 8%. Achievements in the marketplace project included a reduction of Speed Index by 51%, Image Payload by 43%, and an improvement of Largest Contentful Paint (LCP) by 77%. Refactored N+1 queries to enhance the performance of the inventory report by more than 90%.

Utilized DynamoDB Streams to synchronize databases and created indexes that reduced proximity service latency by 93%. Conducted A/B testing experiments on the new product search logic, increasing the conversion rate by 3%. Organized knowledge-sharing sessions through Dojos and Katas and participated in creating new services using Test-Driven Development (TDD) during Pair/Mob programming sessions, significantly reducing the time for code reviews.

Technical expertise includes ReactJS, Next.js, TypeScript, Jest, Node.js, GraphQL, AWS, Serverless, MongoDB, and DynamoDB, demonstrating a broad and deep skill set in modern web development frameworks and cloud-based services.

Software Engineer
7/1/2020 - 12/1/2020

Designed and created a backend in Node.js to efficiently handle requests for a new telemedicine app in Brazil. Set up seamless communication with a credit card payment service, ensuring secure and reliable transactions. Played a pivotal role in building the backend team by conducting comprehensive interviews to select suitable candidates. Developed proficiency in Node.js, Typescript, and Jest. Demonstrated extensive skills in MySQL and expertise in implementing GraphQL with Apollo.

Software Engineer
4/1/2018 - 7/1/2020

Developed communications with Microsoft Azure to relay ERP information to an application. Engineered an application using Xamarin to visually represent information through charts. Implemented multiple communication protocols with fiscal printers to facilitate the issuing of invoices. Proficiency achieved in Windows Forms, C#, Xamarin, and Microsoft Azure.

Software Engineer
2/1/2015 - 4/1/2018

Responsible for analyzing and developing solutions to enhance the production process for the new shoe season. Gained extensive experience across various sectors including production, export, finance, and engineering. Developed proficiency in creating tailored solutions to optimize processes in each of these areas.

Developer
9/1/2013 - 2/1/2015

Developed strong problem-solving skills through client visits and collaboration with business analysts to identify optimal solutions. Gained substantial experience in understanding and immersing in client cultures to tailor solutions effectively, notably spending a year with a client to develop a Warehouse Management System (WMS) that significantly enhanced product storage and distribution efficiency. Built expertise in project management, requirement analysis, and stakeholder communication while implementing technical solutions to meet client needs.

Intern
3/1/2013 - 9/1/2013

Developed proficiency in Progress programming language through dedicated coursework. Implemented enhancements and corrective measures in diverse industry sectors including manufacturing, tobacco, food trade, and equipment trade. Leveraged technical expertise to understand and optimize company processes.

Support Technician
3/1/2012 - 3/1/2013

Specialized in telephone and remote customer service, delivering solutions to problems and clarifying doubts efficiently. Acquired extensive experience in troubleshooting technical issues and providing step-by-step guidance. Leveraged customer relationship management (CRM) software to track and manage customer interactions. Utilized various communication tools such as VoIP systems, email platforms, and online chat applications to ensure seamless customer support. Developed proficiency in documenting support processes and maintaining accurate records of customer inquiries and resolutions. Enhanced problem-solving skills through continuous learning and application of best practices in customer service.

Intern
8/1/2011 - 3/1/2012

Developed a comprehensive understanding of troubleshooting techniques and customer service protocols. Utilized advanced telecommunication systems and remote desktop applications to resolve customer inquiries and technical issues efficiently. Demonstrated proficiency in maintaining high customer satisfaction ratings through effective communication and problem-solving skills. Adapted swiftly to various CRM platforms to manage and document customer interactions and feedback.

Information Technology at University of Caxias do Sul
2012 - 2018

Information Technology at FTEC
2010 - 2011

React - The Complete Guide (incl Hooks, React Router, Redux) at Udemy
6/1/2021

LFW211: Node.js Application Development at The Linux Foundation
2/1/2021

Angular 2: Even More Powerful Web Apps Part 1 at Alura
6/1/2018

ASP.NET CORE PART 2: AN E-COMMERCE WITH MVC AND EF CORE at Alura
6/1/2018