Senior Software Engineer

United States Digital Space LLC; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

United States Digital Space LLC is seeking a Front-End Developer to design, build, and maintain high-performance applications using React.js in Singapore. This role requires expertise in creating modular UI components, integrating with Java/Spring Boot REST APIs, and ensuring application quality through testing.

The ideal candidate will have strong skills in HTML, CSS, and modern React patterns, alongside experience with state management and API integrations. Join us to transform technical services delivery with AI expertise!

Qualifications

• Proficiency with HTML5, CSS3, and React.js.
• Experience building component-based UI using JSX and modern React patterns.
• Working knowledge of state management approaches like Redux.

Responsibilities

• Build modular, reusable, and testable UI components using JSX.
• Integrate front-end components with back-end services using RESTful APIs.
• Write and maintain unit and integration tests using Jest.

Skills

React.js

HTML5

CSS3

State Management (Redux/Context API)

Integration with RESTful APIs

Tools

Bitbucket

Webpack

Jest

React Testing Library

Job description

Company Description

the company is a leading AI Tech Services company. With a 15,000-strong team across the Asia Pacific, the company scales its platforms and capabilities to provide clients with greater agility and AI expertise across a range of Industries. Embracing a strong ecosystem of global partners, the company transforms technology services delivery combining AI with digital resilience to drive real business impact. the company is a subsidiary of the Singtel Group.

Job Description

Responsible for designing, building, and maintaining responsive, high-performance front-end applications using React.js, while integrating with Java/Spring Boot REST APIs. This role focuses on creating modular UI components, implementing state management, ensuring quality through testing, and collaborating with design and back-end teams to deliver reliable user experiences.

Roles and Responsibilities

• Build modular, reusable, and testable UI components (e.g., forms, buttons, dashboards) using JSX.
• Translate wireframes and UI designs into fully functional, responsive, and interactive front-end code.
• Implement state management using Redux and/or Context API and manage application behavior using React Hooks (e.g., useState, useEffect).
• Integrate front-end components with back-end services using RESTful APIs, including Java/Spring Boot API services.
• Optimize application performance using techniques such as code-splitting, lazy loading, and efficient rendering patterns.
• Write and maintain unit and integration tests using tools such as Jest and React Testing Library; troubleshoot and fix defects to ensure quality.

Qualifications

Essential Qualifications

• Proficiency with HTML5, CSS3, and React.js.
• Experience building component-based UI using JSX and modern React patterns (Hooks).
• Working knowledge of state management approaches (Redux and/or Context API).
• Experience integrating UI with RESTful APIs, including back-end services built with Java and Spring Boot.
• Experience with version control (Bitbucket) and modern front-end tooling (Webpack or Vite) and package managers (npm or yarn).
• Experience writing and maintaining unit/integration tests using Jest and React Testing Library.
• Familiarity with client-side routing using React Router.
• Familiarity with schema-based validation libraries such as Yup and Zod.

Preferred Attributes

• Experience with TypeScript.
• Experience with Next.js and server-side rendering (SSR).
• Strong understanding of responsive design, accessibility, and cross-browser compatibility.
• Performance tuning experience for React applications (render optimization, bundling strategies).
• Strong collaboration skills to work effectively with UI/UX, back-end engineering, and QA stakeholders.

Certifications

• React or modern front-end framework certification (vendor or recognized training provider).
• Java and/or Spring Boot certification (e.g., Oracle Java, VMware Spring).
• Cloud or DevOps certification (optional; role-dependent).