Senior Software Engineer - React.js (IGT1)

About IGT1

IGT1 is a rapidly growing offshore technology and talent solutions company based in Port City Colombo. We are a fully owned subsidiary of IGT I Holdings Sweden AB, funded by the three of world’s leading private equity firms; EQT Group, Hg, and TA Associates. We’re also proud to be a sister company of IFS, Sri Lanka’s largest and most established technology company. 

At IGT1, we partner with global businesses to provide them with an operation that maximizes efficiency, spurs growth, allows them to develop and deliver world-class product and services, and create long-term value. Our people-first culture champions diversity, teamwork, and continuous learning, creating an environment where talent thrives. 

With a team of over 500 professionals and counting, we are always looking for passionate, skilled individuals who want to make a global impact while being part of something extraordinary. 

Through our offshore collaboration model, you'll be embedded within the team of one of our esteemed international clients, contributing directly to high-impact, enterprise-level initiatives. 

About the client: Sitecore 

Sitecore delivers a composable digital experience platform that empowers the world’s smartest and largest brands to build lifelong relationships with their customers. A highly decorated industry leader, Sitecore is the leading company bringing together content, commerce, and data into one connected platform that delivers millions of digital experiences every day. Thousands of blue-chip companies including American Express, Porsche, Starbucks, L’Oréal, and Volvo Cars rely on Sitecore to provide more engaging, personalized experiences for their customers.

About the role:

We are seeking a talented Senior Software Engineer to join Sitecore's growing technology hub in Sri Lanka. The ideal candidate has solid React experience, strong problem-solving skills, and enthusiasm for leveraging AI tools in development. You will build high-quality features, contribute to technical discussions, and grow your expertise while integrating AI capabilities into our platform.

Key Responsibilities

• Build and implement front-end features, including AI-powered interfaces and LLM integrations with streaming responses.
• Contribute to technical discussions on architecture, state management, performance optimization, and AI integration patterns.
• Participate in code reviews, pair programming sessions, and learn from senior engineers on build tools and AI development workflows.
• Collaborate with cross-functional teams (Design, Product, Backend, ML/AI, QA) to deliver high-quality features.
• Write clean, type-safe TypeScript code following best practices while utilizing AI assistants for productivity.

Preferred Skills and Experience: 

• 3+ years of professional software engineering experience, including hands-on development with React.js

• Bachelor's degree in Computer Science, Engineering, or related field.

• Experience using AI development tools (GitHub Copilot, Cursor, Claude) and familiarity with LLM APIs.
• Strong proficiency in JavaScript/TypeScript, HTML5, CSS3, and modern React patterns (hooks, composition).
• Experience with build tools (Vite, Webpack) and state management (React Query, React Context).
• Familiarity with REST APIs, OpenAPI/Swagger, and modern CSS (Flexbox, Grid, TailwindCSS preferred).
• Understanding of UI/UX principles, web performance, and basic conversational interface concepts.
• Good problem-solving, communication, and collaboration skills.

Nice to Have:

• Hands-on experience integrating LLM APIs into production applications.
• Exposure to MCP (Model Context Protocol), prompt engineering, or RAG patterns.
• Experience with Next.js, Remix, or React Server Components.
• Testing experience (Vitest, React Testing Library, Playwright), monorepo tools, or accessibility knowledge.
• Experience with GitHub Actions, Agile/Scrum, or web security fundamentals.

Core technologies we use:

• React, TypeScript, JavaScript (ES6+), Vite/Webpack/Rollup
• Claude API, OpenAI API, AI development tools (GitHub Copilot, Cursor, Claude Code)
• React Query, Jotai, React Context, TailwindCSS, CSS Modules
• Vitest, React Testing Library, Playwright, GitHub Actions, Docker
• Turborepo with pnpm, REST APIs with OpenAPI/Swagger

What matters to us:

• Simplicity over cleverness - AI tools should enhance, not complicate.
• Readability and maintainability - code should be clear and well-tested.
• Functional patterns, type safety, and component-driven development.
• Code ownership - if you write it, you maintain it and ensure quality.
• Thoughtful AI integration that genuinely improves user experience.

We champion flexibility and hybrid work options to support varying lifestyles and personal needs. At the same time, we value the power of in-person collaboration to build community, spark innovation, and strengthen connections. Our approach ensures you can work in ways that suit you best while still engaging with colleagues to share ideas and grow together. #LI-Hybrid #LI-DNP