Júlio José Lena
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Júlio José Lena Email & Phone Number

Mobile Developer at BairesDev
Location: Itapema, Santa Catarina, Brazil 10 work roles 1 school
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✓ Verified Jun 2026 3 data sources Profile completeness 86%

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Current company
BairesDev
Role
Mobile Developer
Location
Itapema, Santa Catarina, Brazil
Company size
3109 employees

Who is Júlio José Lena? Overview

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Júlio José Lena is listed as Mobile Developer at BairesDev, a company with 3109 employees, based in Itapema, Santa Catarina, Brazil. AeroLeads shows a matched LinkedIn profile for Júlio José Lena.

Júlio José Lena previously worked as Software Engineer at Iterative; and Desenvolvedor FullStack Senior at Bairesdev. Júlio José Lena holds Técnólogo, Análise E Desenvolvimento De Sistemas from Fatec - Cuiabá.

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Email format at BairesDev

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BairesDev

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Profile bio

About Júlio José Lena

Experienced software developer. Delivering high-quality software solutions with a focus (but not limited to) on React.js and React Native development.Expertise in:✔ Strong programming, refactoring and debugging skills. (Experienced to transform old class components to Hooks-based components);✔ TypeScript and CSS-In-JS (styled-components);✔ State management (Redux, Redux Saga, Jotai, Zustand, Valtio, Context API and custom hooks);✔ Unit testing frameworks such as Jest, React Testing Library, Mocha, Chai and Enzyme;✔ Writing high-performance, reusable code.✔ Continuous integration and deployment (CI/CD) environment (CodeMagic, Github Actions, DeployHQ);✔ Extensive experience working with animations (using Reanimated, Moti and Skia);Other Skills:✔ Experience working remotely in teams that use agile practices.✔ Independent, problem solver.✔ Love to write well-designed, testable and efficient code.Hobbies:- Videogames- Anime- Programming

Current workplace

Júlio José Lena's current company

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BairesDev
Bairesdev
Mobile Developer
State of Santa Catarina, Brazil
Website
bairesdev.com
Employees
3109
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10 roles

Júlio José Lena work experience

A career timeline built from the work history available for this profile.

Mobile Developer

Bairesdev

State Of Santa Catarina, Brazil

Software Engineer

Current
Iterative;
Aug 2023 - Present

Desenvolvedor Fullstack Senior

Bairesdev

San Francisco, Califórnia, Estados Unidos

Contract Developer at Pinterest, entrusted with the ownership of Pinterest TV Studio app - a React Native/Expo project targeting both iOS & Android. Contributed to the product direction and ideas exploration as well as prototyped potential features. Collaborated on refactoring the layout and implementing new features (for example mobile episode creation.

Jun 2022 - Jul 2023

React Developer

Smartcitizen

Vagos, Aveiro, Portugal

I built most things on every platform (web and mobile), including Dockerimages, CI/CD for mobile, Mobile Apps as Whitelabel, Refactored all the UIfrom Web, created Designs to publish Apps on Stores and more.

Apr 2021 - Nov 2022

Software Engineer

Prudentte Gestão De Pagamentos

Brazil

I planned the architecture of the API and i built the App from Scratch,implemented CI/CD for the Apps using CodeMagic.

Oct 2021 - Apr 2022

Application Developer

Start Pay

Cuiabá, MT, Brazil

Refactored from scratch an Financial App using React Native, implementedsome APIs using PHP and I made a layout library to use in checkout pages forsome football teams.

Nov 2020 - May 2021

Application Developer

Start Pay

Cuiabá, Mato Grosso

Refactored from scratch an Financial App using React Native, implementedsome APIs using PHP and I made a layout library to use in checkout pages forsome football teams.

Sep 2019 - Nov 2020

System Analyst

Cpqd

Cuiabá, MT, Brazil

Refactored from scratch an Electric Mobility App made using Expo, added somefeatures like adding Maps, customizing, adding paying methods and more.

Nov 2020 - Apr 2021

Software Programmer

Centersis

Cuiabá, Mato Grosso, Brasil

Worked in a Freemasonry Software using PHP, i built an App from scratch for the first time and published it on both Stores.

Sep 2017 - Aug 2019
Team & coworkers

Colleagues at BairesDev

Other employees you can reach at bairesdev.com. View company contacts for 3109 employees →

AK Agnieszka Kaczmarczyk Agnieszka Kaczmarczyk Colleague at BairesdevVilla De Arteaga, Coahuila, Mexico, Mexico View → LE Luis E. Reymundo Luis E. Reymundo Colleague at BairesdevMexico City Metropolitan Area, Mexico View → FC Fillipp Costa Fillipp Costa Colleague at BairesdevJoão Pessoa, Paraíba, Brazil, Brazil View → AM Ademir Mazer Ademir Mazer Colleague at BairesdevPonta Grossa, Paraná, Brazil, Brazil View → KQ Katia Quirós Pizarro Katia Quirós Pizarro Colleague at BairesdevSan Carlos, Alajuela, Costa Rica, Costa Rica View → LR Luis Rosano Arredondo Luis Rosano Arredondo Colleague at BairesdevApizaco, Tlaxcala, Mexico, Mexico View → SL Sara Lucía Aulestia Patiño Sara Lucía Aulestia Patiño Colleague at BairesdevQuito Metropolitan Area, Ecuador View → WV Wagner Vieira Wagner Vieira Colleague at BairesdevRio De Janeiro, Rio De Janeiro, Brazil, Brazil View → CJ Collins Jones Collins Jones Colleague at BairesdevNew York, New York, United States, United States View → DS Diego Sanchez Navas Diego Sanchez Navas Colleague at BairesdevSpain, Spain View →
1 education record

Júlio José Lena education

  • Fatec - Cuiabá
    Fatec - Cuiabá
    Análise E Desenvolvimento De Sistemas
FAQ

Frequently asked questions about Júlio José Lena

Quick answers generated from the profile data available on this page.

What company does Júlio José Lena work for?

Júlio José Lena works for BairesDev.

What is Júlio José Lena's role at BairesDev?

Júlio José Lena is listed as Mobile Developer at BairesDev.

Where is Júlio José Lena based?

Júlio José Lena is based in Itapema, Santa Catarina, Brazil while working with BairesDev.

What companies has Júlio José Lena worked for?

Júlio José Lena has worked for Bairesdev, Iterative;, Smartcitizen, Stefanini Brasil, and Prudentte Gestão De Pagamentos.

Who are Júlio José Lena's colleagues at BairesDev?

Júlio José Lena's colleagues at BairesDev include Agnieszka Kaczmarczyk, Luis E. Reymundo, Fillipp Costa, Ademir Mazer, and Katia Quirós Pizarro.

How can I contact Júlio José Lena?

You can use AeroLeads to view verified contact signals for Júlio José Lena at BairesDev, including work email, phone, and LinkedIn data when available.

What schools did Júlio José Lena attend?

Júlio José Lena holds Técnólogo, Análise E Desenvolvimento De Sistemas from Fatec - Cuiabá.

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