Frontend Developer (React.js) – Thrimaa Interactive (Colombo, Sri Lanka)

Job Overview

Thrimaa Interactive is seeking a motivated, detail-oriented Frontend Developer (React.js) for an entry-level, full-time remote role based out of Colombo, Sri Lanka.

Joining the UI/UX and web development team, this position focuses on translating design concepts into interactive, responsive, and performance-optimized web applications using modern JavaScript and React.js.

Key responsibilities include:

• UI Implementation: Building dynamic, accessible, and high-performance web interfaces from component designs using React.js, HTML5, CSS3, and modern JavaScript (ES6+).
• API Integration: Connecting client-side components to backend services by consuming RESTful APIs for dynamic data rendering.
• Cross-Device Optimization: Ensuring seamless responsiveness, mobile usability, and speed optimization across diverse screen sizes and web browsers.
• Team Collaboration: Working closely with UI/UX designers, back-end developers, and project managers in an interactive team environment to iteratively refine digital products.

About Us

Thrimaa Interactive IT Solutions is a digital transformation agency headquartered in Colombo, Sri Lanka. Specializing in digital product design, web and mobile application development, and digital marketing services, Thrimaa Interactive partners with startups and growing businesses to deliver modern, scalable digital experiences.

Here is the website link: https://www.thrimaa.com/

Key Requirements & Qualifications

• Experience: Minimum 1+ years of hands-on experience developing web applications with React.js.
• Core Technical Skills:
  • Solid mastery of HTML5, CSS3 (Flexbox/Grid), and JavaScript (ES6+).
  • Working understanding of REST APIs and asynchronous data fetching (fetch/axios).
  • Familiarity with component-driven state management and modern front-end build tools.
  • Understanding of clean code practices, responsive UI principles, and version control (Git).
• Soft Skills: Eagerness to learn new libraries/frameworks, strong problem-solving initiative, and effective communication skills in remote/hybrid team settings.

Role Benefits & Perks

• Remote Work Flexibility: Fully remote work setup allowing you to work comfortably from home in Sri Lanka.
• Entry-Level Launchpad: Structured mentorship and hands-on client project experience ideal for early-career developers.
• Collaborative Agency Culture: Creative agency environment working across diverse design, development, and marketing projects.
• Skill Expansion: Opportunities to gain exposure to full-stack integration, modern state management, and modern Web dev workflows.

Salary Insight

• Estimated Regional Range: In the Colombo, Sri Lanka market, compensation for an entry-level Frontend Developer (1+ years experience in React.js) typically ranges between LKR 80,000 and LKR 150,000 per month, depending on project portfolio quality, component architecture familiarity, and technical interview performance.

Career Guide Tips for Junior React Developers

1. Master Core React Patterns: Beyond basic state (useState, useEffect), focus on custom hooks, context API, memoization (useMemo, useCallback), and modular component design.
2. Focus on Clean CSS & Layouts: Understanding CSS Flexbox, Grid, and utility frameworks (like Tailwind CSS) ensures you can turn Figma designs into pixel-perfect web pages rapidly.
3. Learn REST & Async Handling: Practice handling API loading states, error boundaries, and dynamic data rendering gracefully to deliver clean user experiences.

How to Prepare a CV for This Position

• Highlight Your Tech Stack Clearly: Dedicate a prominent section on page one for skills like React.js, JavaScript (ES6+), HTML5, CSS3, REST APIs, Git, and Responsive Design.
• Feature Live Projects or Code Repos: Include direct links to your GitHub profile or live portfolio websites demonstrating real React components or personal projects.
• Emphasize Problem Solving: Highlight specific challenges you solved in previous coursework, internships, or personal projects (e.g., “Built a responsive dashboard using React and REST APIs with full dark-mode toggle”).

How to Prepare for the Interview

• Review Core JavaScript & React Concepts: Be ready to explain ES6 features (arrow functions, destructuring, promises, array methods like .map() and .filter()) and React lifecycle/hooks.
• Practice Component Coding Challenges: Brush up on creating simple interactive React components during a live interview (e.g., building a searchable list, counter, or modal).
• Prepare Your Portfolio Walkthrough: Be ready to screen-share a project you built, explaining your component structure, state management choices, and CSS decisions.

Top 3 Interview Questions & How to Answer Them

1. “Can you explain the difference between state and props in React, and when you would use each?”

• Explain that props (short for properties) are read-only inputs passed down from parent to child components to configure them, whereas state is internal data managed within a component that can change over time and trigger re-renders.

2. “How do you fetch data from a REST API in a React component, and how do you handle loading or error states?”

• Walk through using useEffect or React Query to trigger an asynchronous fetch/axios call, setting separate state variables for data, isLoading (boolean), and error to display appropriate UI indicators to the user.

3. “How do you ensure a web application looks and functions well on mobile devices?”

• Discuss using mobile-first responsive design, fluid layouts using CSS Grid and Flexbox, media queries, flexible image sizing, and testing across multiple browser viewports.

How to Apply

To apply for the Frontend Developer (React.js) position at Thrimaa Interactive:

1. Visit the official Thrimaa Interactive Careers Page (thrimaainteractive.com) or search for their job posting on regional platforms like LinkedIn Sri Lanka.
2. Submit your updated CV, cover letter, and direct links to your GitHub profile or online portfolio.

Career Page Link.

More Vacancy Updates.

Disclaimer

This job summary is an independent document created for educational, career preparation, and guidance purposes only. It is not an official job offer or contract from Thrimaa Interactive IT Solutions. Salary benchmarks, working arrangements, and role duties remain subject to final confirmation by the hiring employer.