Best HTML5 games from the cloud

CoolGames

Senior Web Developer

Cross Platform Developer

HR Advisor

Financial Accountant

Senior Backend Developer

Senior Game Designer - LiveOps & Product Strategy

Game Developer Internship

Internship Community Manager

CoolGames is seeking a Senior Web Developer to contribute to the full lifecycle of HTML5 casual game development, from inception to maintenance. This role involves delivering high-quality products as part of an agile, multidisciplinary team. Responsibilities include developing new titles, evolving existing games, maintaining internal tooling, and ensuring robust, stable, and performant games through optimization, debugging, and code reviews. The ideal candidate is proactive, writes clean code, and collaborates effectively.

<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Description</h2>We are looking for a Senior Web Developer who will contribute to the entire lifecycle of HTML5 casual game development - from inception to live maintenance. As a key player, you'll champion the delivery of top-notch products, becoming an integral part of an agile, multidisciplinary, and creatively charged game development team.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">About CoolGames</h3>At CoolGames, we’re proud to be a leading international HTML5 game studio, working with some of the world’s biggest ‘Big Tech’ game platforms, such as Netflix, Discord, Facebook and Microsoft Play. We also work with famous games IP such as Battleship, Angry Birds and Monopoly.CoolGames is part of Keesing, the world’s largest Braintainment company. Keesing is a financially strong publisher of engaging sudokus, crosswords and many other puzzles & games with a presence in over 20 countries headquartered in The Netherlands.With the CoolGames HQ in Amsterdam, supported by our global remote teams, we offer market-competitive salaries, the chance to contribute to successful casual games that are played by millions and work directly with some of the biggest brands in the world. We believe in creativity, collaboration and delivering world-class gaming experiences, while giving you the choice to either join our Amsterdam studio or become part of our remote teams.If you want to grow your career in a profitable, internationally recognized company, work closely with world-famous partners and be part of a highly professional international team - CoolGames is the right place for you.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">About the role</h3>As a Game Developer at CoolGames, you take responsibility for delivering high quality products. Your teamwork will be fundamental to the success of the products you work on.You will be part of a multidisciplinary development team collaborating with game designers, game artists, quality assurance engineers, and fellow game developers. You work on developing new titles, evolving existing games, as well as contributing to the maintenance and evolving our internal tooling.You are adept at managing your time and productivity with the goal to deliver robust code while meeting established deadlines.Next to working on features for our games your responsibilities include optimisation, debugging, fixing bugs, performing code reviews, reviewing requirements, working on platform compatibility and ensuring our games remain stable and performant.<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Requirements</h2><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">About You</h3>You are proactive and thrive on taking ownership and responsibility. You write clean, readable and maintainable code. Sharing your skills and experience with the team is something you have consistently been praised for. You are open to feedback and eager to learn. You embrace collaboration and have a ”you can count on me” attitude. You flourish in an environment where teamwork and communication are important.The right candidate meets most of the following requirements:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">At least 5 years of experience programming professionally;</li><li class="leading-relaxed">Solid knowledge of development best practices;</li><li class="leading-relaxed">Knows how to strike a balance between speed and quality;</li><li class="leading-relaxed">Estimations are consistently on point</li><li class="leading-relaxed">Proactively communicates and mitigates technical risk;</li><li class="leading-relaxed">Excellent at contributing to technical design & technical decision making;</li><li class="leading-relaxed">Understands the commercial reality of casual games;</li><li class="leading-relaxed">Experience with Agile/Scrum development practices;</li><li class="leading-relaxed">Experience with version control tools like git;</li><li class="leading-relaxed">Experience with web game tech (e.g. PIXI/Phaser/Three.js);</li><li class="leading-relaxed">Experience with HTML5 games, Typescript and JavaScript is a plus;</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Benefits</h2><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">What we can offer you</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">An international team of 50+ professionals from almost 20 different countries;</li><li class="leading-relaxed">Work closely with some of the biggest (upcoming) game platforms in the world on high-quality casual games that are played by millions of gamers;</li><li class="leading-relaxed">Competitive remuneration;</li><li class="leading-relaxed">A flexible remote working environment;</li><li class="leading-relaxed">A very open, informal and international company culture where everyone can make a difference.</li></ul>

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Threat connect

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ThreatConnect is seeking a highly skilled Senior Integrations Developer for their Polarity product, focusing on modern web technologies. This role involves designing and developing high-quality integrations for the Polarity platform, including back-end logic and interactive user interface components using TypeScript and native Web Components. The developer will collaborate with server and front-end teams to connect Polarity to third-party data sources, enhancing data analysis and incident response capabilities.

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Company Background ThreatConnect enables threat intelligence, security operations, and cyber risk management teams to work together for more effective, efficient, and collaborative cyber defense. With ThreatConnect, organizations can infuse ML and AI-powered threat intel and cyber risk quantification into their work, allowing them to contextualize an evolving threat landscape, prioritize the most significant risks to their business, and operationalize defenses. More than 250 enterprises and thousands of security operations professionals rely on ThreatConnect every day to protect their organizations’ most critical assets. We offer a competitive benefits package with comprehensive insurance coverage, unlimited paid time off, and unique perks designed to help you meet your financial and personal goals. We are committed to offering an employment experience and benefits package that enables you and your family to grow with us and share in our success. We love to recognize our employees who have gone above and beyond. ### About the Job * Design, develop, and implement robust and efficient Polarity integrations using TypeScript. * Create custom, reusable, and performant user interface elements for Polarity overlays using native Web Components. * Write clean, well-documented, and maintainable code for both back-end integration logic and front-end components. * Collaborate with stakeholders to gather requirements and translate them into technical specifications for new integrations. * Thoroughly test and debug integrations to ensure they are functioning correctly and meet performance and reliability standards. * Maintain and improve existing integrations, including adding new features and fixing bugs. * Create and maintain clear and comprehensive documentation for all developed integrations. * Stay up-to-date with the latest Polarity features and best practices for integration development. ### About You * You are a natural problem-solver who thrives on a challenge. You excel in an autonomous environment, taking ownership of your projects from concept to completion. With an insatiable curiosity for technology, you always look for ways to improve your craft and the tools you build. * You are an excellent communicator who can bridge the gap between technical possibilities and stakeholder needs, translating complex requirements into elegant and effective solutions. Above all, you view code as a craft, taking pride in writing software that is not only functional but also clean, scalable, and easy for others to understand. ### In this role, you’ll get to... * Directly Empower Security Teams. Build the critical tools that our security analysts will use every day. See your code in action, providing instant context and accelerating threat detection and incident response. * Take Full Ownership. Drive projects from the initial idea and architectural design through to deployment and iteration. You won't just be a cog in the machine; you'll be the architect of your solutions. * Master Modern Technologies. Become a subject matter expert in a cutting-edge security platform while deepening your expertise in modern TypeScript and native Web Components to create rich, interactive UIs. * Solve Fascinating Puzzles. Tackle interesting and complex data integration challenges. You'll be the one connecting disparate APIs and data sources to create a single, unified view for analysts. * Shape Our Strategy. Go beyond fulfilling tickets. You will have the autonomy to propose and build innovative solutions, helping to shape the long-term vision for how we leverage data across the organization. * Work with the Best. Collaborate directly with cybersecurity professionals, learning from the front lines and translating their needs into powerful, intuitive tools that make a real impact. ### In the first month, we’ll expect you to... * Get Set Up and Integrated. Complete all onboarding, gain access to our development environments (Polarity Server, Git, etc.), and become familiar with our communication and project management tools. * Understand the Ecosystem. Meet with each of the teams to understand their workflows, primary data sources, and biggest challenges that Polarity can help solve. * Master the Development Cycle. Build, test, and deploy a sample integration to become fully acquainted with our development and deployment process. * Make Your First Contribution. Successfully resolve a bug or implement a minor feature enhancement on an existing integration, demonstrating an understanding of our codebase and code review process. ### At 3 months we’ll expect you to... * Deliver Your First Integration. Independently own and deliver your first new integration from start to finish, including requirement gathering, back-end development, and the creation of a custom UI with Web Components. * Establish Strong Development Habits. 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Develop a reusable library of TypeScript modules and Web Components that standardizes common patterns and significantly accelerates the development of future integrations. * Shape the Future Vision. Play a key role in defining the long-term strategy for our Polarity ecosystem, researching future platform capabilities and third-party technologies to keep our integrations on the cutting edge. ### About the Team * You will be joining a smart, supportive, and collaborative team that prides itself on having a fun and engaging culture. We are a fully remote team that values open communication and a strong sense of community. Our daily stand-ups, scheduled meetings, and ad-hoc discussions on Slack and Google Meet ensure that everyone stays connected and aligned, no matter where they are. * Code quality is at the heart of what we do. We are passionate about building robust, scalable, and maintainable systems, and we foster an environment of continuous learning and knowledge sharing to achieve that goal. If you thrive in a culture where you can both contribute your expertise and learn from others, you will feel right at home. ### Required Qualifications * Expert proficiency in TypeScript and a strong understanding of its advantages over plain JavaScript. * Deep experience with native Web Components (Custom Elements, Shadow DOM, HTML Templates) to create custom UI for Polarity overlays. * Solid understanding of REST APIs and experience with making and handling API requests in a Node.js environment. * Experience with asynchronous programming concepts (async/await, Promises). * Proficient in using npm or yarn for package management. * Excellent problem-solving and debugging skills. * Strong communication and collaboration skills. * Ability to work independently and manage multiple projects simultaneously. ### Desired Qualifications * Experience with modern front-end build tools (e.g., Vite, Webpack). * Knowledge of front-end styling with CSS-in-JS or modern CSS techniques. * Experience with other security technologies and APIs. * Familiarity with a variety of data formats, including JSON and XML. * Experience with version control systems, such as Git. * A strong understanding of cybersecurity concepts and principles.

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This assessment gives us an idea of your C++ skills- Companies that evaluate this skillset in interviews: Rockstar Games, Ubisoft, Mayhem Studios, etc.- 10 Multiple Choice questions- Average time to complete: 7 to 10 minutes

Let's assess your Data Structures! - This assessment gives us an idea of your problem solving skills using DSA- Companies that evaluate this skillset in interviews: MPL, LILA Games, GSN Games, etc.- 10 Multiple Choice questions

Data Structures and Algorithms

Let's assess your Programming Patterns! ????- This assessment gives us an idea of your code architecture skills- Companies that evaluate this skillset in interviews: Dirtcube, PTW, Playshifu, etc.

Programming Patterns

Let's assess your OOPs skills! ????- This assessment gives us an idea of your fundamental OOPS concepts and Solid principles skills- Companies that evaluate this skillset in interviews: Hitwicket, GSN Games, Tomo Club, etc.

Object Oriented Programming

Let's assess your Unity Skills ????- This assessment gives us an idea of your Unity fundamentals- Companies you can apply for after taking this assessment: Godspeed games, Salvation Games, nCore Games, etc.