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I am a friendly and committed technology professional with more than 34 years of experience working in large, medium and small-scale projects across various sectors such as transportation, government, energy, and retail. I specialize in mobile, backend, and web development and am always eager to learn new concepts and improve outcomes. I believe that continuous learning and knowledge sharing are key to growth. Outside work, I am very active, enjoying climbing, running, and biking. As a mountaineer since 2007, I have led climbing expeditions to the Andes and Himalayas, maintaining a routine of weekly training and weekend climbs. I am also passionate about music, playing multiple instruments including drums, guitars, cavaquinho, banjo, and various percussion instruments.…I am a friendly and committed technology professional with more than 34 years of experience working in large, medium and small-scale projects across various sectors such as transportation, government, energy, and retail. I specialize in mobile, backend, and web development and am always eager to learn new concepts and improve outcomes. I believe that continuous learning and knowledge sharing are key to growth. Outside work, I am very active, enjoying climbing, running, and biking. As a mountaineer since 2007, I have led climbing expeditions to the Andes and Himalayas, maintaining a routine of weekly training and weekend climbs. I am also passionate about music, playing multiple instruments including drums, guitars, cavaquinho, banjo, and various percussion instruments.

Welerson Luiz Maduro

Programmer, Developer, App Developer, +2

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I am a friendly and committed technology professional with more than 34 years of experience working in large, medium and small-scale projects across various sectors such as transportation, government, energy, and retail. I specialize in mobile, backend, and web development and am always eager to learn new concepts and improve outcomes. I believe that continuous learning and knowledge sharing are key to growth. Outside work, I am very active, enjoying climbing, running, and biking. As a mountaineer since 2007, I have led climbing expeditions to the Andes and Himalayas, maintaining a routine of weekly training and weekend climbs. I am also passionate about music, playing multiple instruments including drums, guitars, cavaquinho, banjo, and various percussion instruments.…I am a friendly and committed technology professional with more than 34 years of experience working in large, medium and small-scale projects across various sectors such as transportation, government, energy, and retail. I specialize in mobile, backend, and web development and am always eager to learn new concepts and improve outcomes. I believe that continuous learning and knowledge sharing are key to growth. Outside work, I am very active, enjoying climbing, running, and biking. As a mountaineer since 2007, I have led climbing expeditions to the Andes and Himalayas, maintaining a routine of weekly training and weekend climbs. I am also passionate about music, playing multiple instruments including drums, guitars, cavaquinho, banjo, and various percussion instruments.

Available to hire

I am a friendly and committed technology professional with more than 34 years of experience working in large, medium and small-scale projects across various sectors such as transportation, government, energy, and retail. I specialize in mobile, backend, and web development and am always eager to learn new concepts and improve outcomes. I believe that continuous learning and knowledge sharing are key to growth.

Outside work, I am very active, enjoying climbing, running, and biking. As a mountaineer since 2007, I have led climbing expeditions to the Andes and Himalayas, maintaining a routine of weekly training and weekend climbs. I am also passionate about music, playing multiple instruments including drums, guitars, cavaquinho, banjo, and various percussion instruments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Portuguese

Fluent

Work Experience

Senior Mobile Application Developer at FoodStuffs South Island

April 30, 2025 - July 14, 2025

Designed, developed, and maintained native android and flutter applications, implementing architectural software improvements. Developed performance monitoring tools using Python and related libraries. Created Jira integration using Forge. Technologies included Flutter, Native Android, Odata for SAP integration, Zebra Barcode Scanner Devices, Data analysis with Python/PostgreSQL, and Atlassian Forge Integration. Achievements include reducing app traffic by over 30% and developing a network traffic monitoring application to alert business teams proactively.

Software Engineer at Solnet Solutions

October 31, 2021 - July 14, 2025

Analyzed and developed software integrations using Apache CXF, Citrix, and .Net technologies. Assisted the team in understanding the Apache CXF application to deliver critical integration projects.

Android Developer at FrameWork System - frwk.com.br

September 30, 2020 - July 14, 2025

Analyzed and migrated features from Google Maps to MapBox in Android applications using Android Jetpack, Google Maps, and MapBox technologies. Successfully completed migration on time.

Java/Android Developer at FrameWork System - frwk.com.br

May 31, 2020 - July 14, 2025

Analyzed and developed private Authentication/Authorization Oauth2 backend solutions. Maintained legacy facial recognition solution with Android app and backend APIs. Developed desktop POC app for managing downloads and monitoring driver upgrades from AWS S3. Technologies utilized included Google Mobile Vision, Neurotech SDK, Microsoft Cognitive Services, Android, SpringBoot RESTful APIs, Angular 8, PostgreSQL, OAuth2, JavaFX, and AWS services. Delivered solutions on time and within cost expectations.

Java Developer at FrameWork System - frwk.com.br

September 30, 2018 - July 14, 2025

Analyzed and developed middleware to integrate web frontend application with smart card readers for contactless bus validators. Technologies included Hardware/Software Integration, Java EE, WildFly, AngularJS, WebSocket, Google Protobuf, UDP/TCP Socket. Successfully designed and developed middleware solution on time in a cooperative environment.

Android Developer at Arthur D. Riley & Co. Ltda

January 31, 2018 - July 14, 2025

Analyzed and developed Android applications TicketOr for infringement management, MeterOr for utility reading and billing, and PayMyPark for public parking management. Technologies used included Android, SqlServer, SQLite, RESTful APIs, JSON. Delivered significant features including printer driver integration, ANPR, integrated drawing tools, billing calculation, and on-site printing.

Software Developer at FrameWork System - frwk.com.br

May 31, 2016 - July 14, 2025

Supported clients including Unimed-BH (biometric system maintenance), Tacom (Android GSM modem and external camera communication and RESTful web services), and Argos (Java EE development of RESTful services for GPS vehicle monitoring). Technologies included Java EE, Oracle, PostgreSQL, Hibernate, JBoss, GlassFish, Tomcat, Eclipse/ADT, SQLite, RESTful, JSON, Linux, MQTT. Significant achievements included fraud prevention solutions, Android kernel script customizations reducing costs, and effective GPS data gathering for fleet management.

Java Developer at Proativa BigData - www.dunning.com.br

May 31, 2014 - July 14, 2025

Managed development team and environment, drove proof of concepts for complex project parts, and helped define development methodology. Technologies included Java EE, MySQL, Hibernate, Tomcat, RESTful APIs, JSON, Linux, MQTT. Delivered and launched first version of the dunning product.