React.js Developer

About Us:

We are a fast-growing startup building AI-powered solutions centered around intelligent agents. Our mission is to deliver seamless, intuitive interfaces that make advanced AI accessible to real users through modern, responsive web applications.

Role: Full Stack Developer Developer

We’re looking for a Full Stack Developer who can design and develop production-ready web applications with excellent frontend user experiences and robust backend systems. You’ll work closely with our AI, product, and design teams to build interactive platforms connecting users with intelligent AI agents.

Responsibilities:

• Develop, test, and maintain end-to-end web applications with modern frontend frameworks and scalable backends.
• Collaborate with AI engineers to integrate agent-driven APIs and real-time data into the UI.
• Design and implement RESTful/GraphQL APIs and efficient database structures.
• Optimize application performance, load times, and user responsiveness.
• Write clean, modular, and reusable code following software design principles.

Requirements:

• THE CANDIDATE MUST BE COMFORTABLE WITH FRONTEND DEVELOPMENT AND HAVE A STRONG UNDERSTANDING OF UI/UX DESIGN PRINCIPLES.
• Strong expertise in Frontend Technologies:React.js,HTML, CSS
• JavaScript,TypeScript, and DOM manipulation.
• State management (Redux, Zustand, Context API,Rest API).
• UI libraries like Material UI, Tailwind CSS, or Bootstrap.
• Proficiency in Node.js and Express.js for backend development.
• Strong understanding of database design (MongoDB, PostgreSQL, or MySQL).
• Knowledge of API design patterns, MVC architecture, and low-level OOP design.
• Hands-on experience with Git/GitHub, version control, and collaborative workflows.
• Awareness of real-time data handling (WebSockets), security, and performance optimization.
• Prior experience building or deploying production-grade web applications through past experience and internships.
• Exposure to AI-powered or multi-agent systems.
• Familiarity with Figma or other design collaboration tools.

What You’ll Gain:

• Hands-on experience building real-world AI-integrated full-stack applications.
• Opportunity to work on frontend architecture, design systems, and API integrations.
• Mentorship from experienced full-stack and AI engineers.
• Pathway for conversion to a full-time position based on performance.

• Job Title - Frontend Software Engineer - Data
• Reports Into - Senior Software Engineer - Data
• Location - Hybrid / Bangalore 

A Little Bit about Kwalee…

Kwalee is one of the world’s leading multiplatform game developers and publishers, with well over 900 million downloads worldwide for mobile hits such as Draw It, Teacher Simulator, Let’s Be Cops 3D, Airport Security and Makeover Studio 3D. We also have a growing PC and Console team of incredible pedigree that is on the hunt for great new titles to join TENS!, Eternal Hope, Die by the Blade and Scathe.

What’s In It For You?

• Hybrid working - 3 days in the office, 2 days remote/ WFH is the norm
• Flexible working hours - we trust you to choose how and when you work best
• Profit sharing scheme - we win, you win 
• Private medical cover - delivered through BUPA
• Life Assurance - for long term peace of mind
• On site gym - take care of yourself
• Relocation support - available
• Quarterly Team Building days - we’ve done Paintballing, Go Karting & even Robot Wars
• Pitch and make your own games on Creative Wednesdays! 

Are You Up To The Challenge?

As a Frontend Software Engineer in the Data Science Team, you will build tools and develop technology that deliver data products to a team of strategists, marketing experts and game developers. You will design, build, test and deploy products which serve a company fuelled by data.

Your Team Mates

The Data Science team is central in developing the technology behind the growth and monetisation of our games. We are a cross functional team that consists of analysts, engineers and data scientists, and work closely with the larger engineering team to deliver products spanning our modern, cloud first, tech stack.

What Does The Job Actually Involve?

• Develop and maintain user-friendly and visually appealing web applications using Vue.js
• Create interactive and informative data visualisations for general audiences as well as highly specialised teams
• Integrate with large, complex data sources and machine learning models via APIs
• Work within a data focused team to increase access to and the understanding of test and analysis results within game development, marketing and other aspects of the company

Your Hard Skills

• Minimum 2 years browser-based programming experience
• A proven track record of programming high quality and innovative web pages using Javascript, HTML5 & CSS3 and relevant frameworks (ideally VueJS but could also be others e.g. ReactJS, AngularJS, Svelte)
• Knowledge of data visualisation libraries and techniques
• Understanding of REST APIs, asynchronous programming, and data handling
• An excellent working knowledge of various database, scripting, and development tools, for example bash, Python, Postgres, MySQL, CouchBase, git, JIRA
• A creative mindset motivated by challenges and constantly striving for the best

Your Soft Skills

Kwalee has grown fast in recent years but we’re very much a family of colleagues. We welcome people of all ages, races, colours, beliefs, sexual orientations, genders and circumstances, and all we ask is that you collaborate, work hard, ask questions and have fun with your team and colleagues. 

We don’t like egos or arrogance and we love playing games and celebrating success together. If that sounds like you, then please apply.

A Little More About Kwalee

Founded in 2011 by David Darling CBE, a key architect of the UK games industry who previously co-founded and led Codemasters, our team also includes legends such as Andrew Graham (creator of Micro Machines series) and Jason Falcus (programmer of classics including NBA Jam) alongside a growing and diverse team of global gaming experts.

Everyone contributes creatively to Kwalee’s success, with all employees eligible to pitch their own game ideas on Creative Wednesdays, and we’re proud to have built our success on this inclusive principle.

We have an amazing team of experts collaborating daily between our studios in Leamington Spa, Lisbon, Bangalore and Beijing, or on a remote basis from Turkey, Brazil, Cyprus, the Philippines and many more places around the world. We’ve recently acquired our first external studio, TicTales, which is based in France. 

We have a truly global team making games for a global audience, and it’s paying off: - Kwalee has been voted the Best Large Studio and Best Leadership Team at the TIGA Awards (Independent Game Developers’ Association) and our games have been downloaded in every country on earth - including Antarctica!

JOB SUMMARY:

The Senior Software Engineer designs, develops, troubleshoots, and debugs software applications for our core product. This includes developing software components including Frameworks, APIs, Websites, Utilities, Databases, and Internet-related tools. Demonstrate technical leadership, mentor junior team members, contribute in effort estimation and identify hardware needs.

MINIMUM QUALIFICATIONS AND REQUIREMENTS:

• Bachelor’s Degree in Computer Science or equivalent
• 4+ years working with React Js, exposure to Ember JS will be an advantage
• 5-12 years of industry experience in programming web applications, mobile and/or large-scale enterprise products.
• Proficient in JavaScript, CSS
• Strong experience in one of the following JavaScript frameworks: Ember, React, Angular
• Experience in XML, HTML, IIS
• Familiar with Agile methodologies
• Sense of ownership
• Passion for troubleshooting and problem solving
• Detailed oriented, professional, and possesses a positive work attitude
• Communicate professionally both verbally and in writing
• Extensive experience creating high-quality software in a team environment
• Experience leading projects from start to finish
• Experience with test-driven development (TDD) and/or writing and maintaining high-level test coverage, including both unit and integration tests

• Integrate data from various back-end services and databases
• Gather and refine specifications and requirements based on technical needs
• Create and maintain software documentation
• Stay plugged into emerging technologies/industry trends and apply them into operations and activities

What are we looking for in the Ideal Candidate?

• Proficient in creating Web (Responsive) applications using Angular 8+, AngularJS/ React JS, JavaScript, JQuery.
• Experience developing/consuming REST APIs
• Knowledge of multiple back-end languages (e.g. Python) and JavaScript frameworks (e.g. Node.js)
• Familiarity with databases (e.g.MSSQL, MySQL), and UI/UX design
• Hands-on experience with code versioning systems like Git, SVN.
• A clear understanding of client requirements & design specifications
• Aggressive problem diagnosis and creative problem-solving skills
• Ability to work and thrive in a fast-paced environment, learn rapidly, and master diverse web technologies and techniques.

Attributes:

• Team player, Positive Attitude
• Proven ability to work well with others in a fast-paced, iterative product definition and development environment.
• Able to work independently with little direct supervision and take initiative and willing to mentor and solve problems

We are looking for a JavaScript Developer who is motivated to combine the art of design with the art of
programming. Responsibilities will include implementing visual elements and their behaviors with user
interactions. You will work with both front-end and back-end web developers to build all client-side logic. You will also be bridging the gap between the visual elements and the server-side infrastructure, taking an active role on both sides, and defining how the application looks and functions.

Responsibilities
• Build reusable code and libraries for future use
• Ensure the technical feasibility of UI/UX designs
• Optimize applications for maximum speed and scalability
• Work with an international team. Remote work / telecommuting is possible

Desired Skills and Experience
• Strong understanding of JavaScript, its quirks, and workarounds (our platform is pure JS)
• Solid experience (2+ years) with related Web Technologies ( HTML5, CSS3, SVG )
• Proficient understanding of cross-browser compatibility issues and ways to work around such issues
• Proficient understanding of CORS issues and ways to work with such issues
• Proficient understanding of social network APIs
• Good understanding of browser rendering behavior and performance
• Experience in mobile web development ( iOS / Android / Windows Mobile )
• Fluent with Linux/Unix environments
• Knowledge of PHP optional but desirable
• Writing and maintaining batch jobs to streamline processes (Shell, Perl etc.)
• Ability to set priorities and meet deadlines in a dynamic, fast paced environment
• Inclined to take ownership of tasks and to ship highly polished products with excellent attention to detail
• Responsible, self-motivated worker and team-player; excited about new technologies
• Strong verbal and written communication skills in English