Javascript jobs in Brazil
Mobile Software Engineer - React Native (Mid/Senior)
eNor Securities
Página da Vaga | SRE - Site Reliability Engineering
Stefanini Group
Senior Software Engineer
Luxoft Mexico
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Visionnaire
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Costa & Silva Advocacia e Consultoria Jurídica
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Practia Brasil
Senior Application Developer
MM Management Consultant
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IT Application Specialist
HITACHI ENERGY BRASIL LTDA.
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VIASOFT
Desenvolvimento Mobile - React Native Sênior - 130506
GFT Group
Design Engineering (Front-End And Ux/Ui)
Foundey | UI UX Design Agency
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Lincoln Electric
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Winover Contact Center
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EY Studio+ Nederland
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BRQ Digital Solutions
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Truphone
Mobile Software Engineer React Native Mid/Senior
Job summary
A fintech company in Aracaju is seeking a Mobile Software Engineer with a strong focus on React Native. This role involves contributing to the architectural evolution of mobile applications, implementing features aligned with product design, and ensuring scalable and testable mobile code. Ideal candidates should have over 5 years of experience in mobile or frontend development and strong engineering fundamentals, along with a collaborative and quality-oriented mindset. Join us to tackle technical challenges and build impactful financial infrastructure.
Qualifications
- 5+ years of experience in mobile or frontend development.
- Strong understanding of mobile architecture and state management.
- Technical English required for reading, writing, and professional communication.
Responsibilities
- Contribute to the architectural evolution of mobile applications.
- Implement features aligned with product and design.
- Propose improvements in performance, stability, and user experience.
Skills
eNor Securities is a fintech focused on financial infrastructure, digital assets, and regulated products, operating at the intersection of traditional finance and the crypto ecosystem. We work in a highly complex technical and regulatory environment, building products that require robustness, security, scalability, and clear architecture.
Our engineering team works closely with product and business, making technical decisions with real impact on operations and company growth.
We are looking for a Mobile Software Engineer with a strong focus on React Native to strategically contribute to the evolution of our mobile applications.
Beyond building screens, we seek someone with strong engineering fundamentals, mobile architectural thinking, and the ability to collaborate closely with backend, product, and design.
You will help build scalable, stable, and high-quality mobile applications, designed to support critical financial products and long-term evolution.
- Mid to Senior level
- 5+ years of experience in mobile or frontend development
- Strong understanding of mobile architecture and state management
- Comfortable discussing technical trade-offs and proposing solutions
- Hands‑on, collaborative, quality‑oriented mindset
- Technical English required for reading, writing, and professional communication
- Solid experience with React Native
- Strong proficiency in JavaScript and TypeScript
- Experience with modern mobile architectures and component‑based design
- Familiarity with REST and / or GraphQL APIs
- Ability to write testable, performant, and maintainable mobile code
- Understanding of the mobile lifecycle (Android and iOS)
- State management (Redux, Zustand, MobX, or similar)
- Modern React / React Native patterns (Hooks, Context, performance optimizations)
- Mobile testing (Jest, React Native Testing Library, Detox, or similar)
- App publishing and maintenance on App Store and Google Play
- Native API integrations (native modules, bridges)
- Mobile CI / CD
- Familiarity with Expo (and clarity on when to use or not)
- Contribute to the architectural evolution of mobile applications
- Implement features aligned with product and design
- Propose improvements in performance, stability, and user experience
- Ensure scalable, testable, and sustainable mobile code
- Work closely with backend, product, and design teams
- Support continuous improvement of mobile practices and standards
- Experience in fintech, crypto, or financial products
- Background in large‑scale or complex mobile applications
- Knowledge of mobile performance, UX, and security best practices
- Senior engineer mindset with a systemic and product‑oriented view
If you enjoy real technical challenges and want to build impactful financial infrastructure, come join eNor Securities.
* The salary benchmark is based on the target salaries of market leaders in their relevant sectors. It is intended to serve as a guide to help Premium Members assess open positions and to help in salary negotiations. The salary benchmark is not provided directly by the company, which could be significantly higher or lower.