Senior Frontend Engineer - Web & Mobile (React & React Native)

Posted Yesterday
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Cairo, EGY
In-Office
Senior level
Information Technology • Software
The Role
Develop and optimize production web and mobile applications with React and React Native. Build shared components and business logic, manage monorepos, implement state management, integrate type-safe APIs, optimize performance, write automated tests, and contribute to CI/CD and deployment workflows. Collaborate with product, design, and backend teams to deliver features from Figma designs through production while identifying technical risks and architectural improvements.
Summary Generated by Built In

ValleySoft is a regional IT services provider delivering enterprise technology and process-focused solutions to global clients. Working across the Information Technology and Services space, the company helps organizations solve complex business challenges through practical, scalable software solutions that support long-term operational success.

This role is an opportunity to contribute to modern digital products that span both web and mobile environments. As a Senior Frontend Engineer, you will play a central part in shaping high-quality user experiences, strengthening frontend architecture, and partnering closely with cross-functional teams to deliver reliable, production-ready solutions that align design, engineering, and business goals.

Responsibilities
  • Develop, maintain, and optimize production web applications using React.js and mobile applications using React Native.
  • Build reusable components and shared business logic across web and mobile platforms.
  • Manage monorepo architectures using Nx or Turborepo.
  • Implement state management with Redux Toolkit, Redux, or Zustand.
  • Integrate type-safe APIs and manage application data efficiently.
  • Optimize rendering, virtualization, memory management, and build processes across web and mobile.
  • Write unit, integration, and end-to-end tests using Jest, React Testing Library, Detox, or Cypress.
  • Deliver features end to end, from Figma designs through production deployment.
  • Identify technical risks, edge cases, and architectural improvement opportunities.
  • Contribute to CI/CD pipelines and development workflows.

Requirements
  • 3–5 years of professional software development experience, including at least 3 years of hands-on production experience building both React.js web applications and React Native mobile applications.
  • Strong proficiency in TypeScript and modern JavaScript.
  • Experience building with monorepo tools such as Nx or Turborepo, implementing state management with Redux Toolkit, Redux, or Zustand, and working with type-safe APIs while sharing code across web and mobile platforms.
  • Solid understanding of DOM APIs, CSS-in-JS, mobile application lifecycles, and offline storage.
  • Hands-on experience with performance optimization and virtualization in production applications.
  • Experience writing unit and integration tests with Jest and React Testing Library, along with end-to-end testing using Detox for mobile and Cypress for web.
  • Hands-on experience with build pipelines, automated deployments, and release workflows for both web and mobile applications, including familiarity with GitHub Actions, GitLab CI, and Fastlane.
  • Experience collaborating with product managers, UI/UX designers, and backend engineers throughout feature delivery.
  • Ability to work on-site.
  • Bachelor’s degree in Computer Science, Software Engineering, or a related field is a plus.
  • Banking or financial services experience is highly preferred.

Benefits
  • Private Health Insurance
  • Training & Development

Skills Required

  • 3-5 years of professional software development experience
  • At least 3 years of hands-on production experience building React.js web applications and React Native mobile applications
  • Strong proficiency in TypeScript and modern JavaScript
  • Experience with Nx or Turborepo monorepo tools
  • Experience with Redux Toolkit, Redux, or Zustand
  • Experience with type-safe APIs and shared code across web and mobile platforms
  • Understanding of DOM APIs, CSS-in-JS, mobile application lifecycles, and offline storage
  • Production experience with performance optimization and virtualization
  • Experience writing unit and integration tests with Jest and React Testing Library
  • Experience with mobile end-to-end testing using Detox and web end-to-end testing using Cypress
  • Experience with build pipelines, automated deployments, and release workflows for web and mobile applications
  • Familiarity with GitHub Actions, GitLab CI, and Fastlane
  • Experience collaborating with product managers, UI/UX designers, and backend engineers
  • Ability to work on-site
  • Bachelor's degree in Computer Science, Software Engineering, or a related field
  • Banking or financial services experience
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The Company
HQ: Cairo, Cairo
100 Employees
Year Founded: 2006

What We Do

- Valleysoft is a regional IT services provider serving clients around the world. Since 2006, Valleysoft has been working with global partners, such as IBM, in different industries to solve complex business and technical problems ranging from enterprise-class application development and maintenance to worldwide process management. - As client-focused and process-oriented company, Valleysoft stands as a vendor neutral and capability rich professional organization. Our maturity in quality delivery and operational discipline shows through our work. Our operational maturity enables us to provide high-quality services with repeatable and predictable results at optimized efficiency in both level of efforts and economic model. As a result, we are able to deliver to our clients world-class services at best values.

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