Senior Software Engineer (C++/Typescript)

🏢 Summary: Senior Software Engineer role focused on building and operating monetization systems for a large-scale live game. The position involves developing and maintaining highly available backend services, web UI surfaces, and client integrations with strong DevOps and reliability practices. You will work across the full stack to support purchasing, rewards, and progression systems with high reliability expectations. 🗂️ Requirements: Strong Java 21 expertise, Experience with distributed systems and service-oriented architecture, Proficiency in REST APIs and SQL databases, Experience with CI/CD systems, Working knowledge of C++ for client integration, Understanding of client-server interactions (HTTP/REST), Proficiency in HTML, CSS, and JavaScript, Experience with Linux environments, Scripting skills in Bash or Python, Experience with observability and monitoring tools, Version control experience, Experience in incident response and live operations 📃 Skills: Java, C++, SQL, REST, HTML, CSS, JavaScript, Linux, Bash, Python, Datadog, Git, Perforce, Jenkins, PagerDuty 🏢 Description: About the role: Our client is an established game studio renowned for its highly successful MOBA and FPS franchises. ​As a Senior Software Engineer on the Monetisations team, you will have the chance to build and operate key player-facing systems that support the purchasing, rewarding, and progression experiences within one of the world’s largest live games.​ You will be responsible for maintaining game systems that are healthy, reliable, and continually evolving. You will work across backend services, deployment pipelines, monitoring systems, and integration points with the Game Client with very high reliability and quality expectations. You must combine a DevOps mindset with the ability to contribute code across the full game technology stack.​By joining the team, you will help accelerate the delivery of upcoming strategic initiatives. You will work on a daily basis with an engineering team based in Dublin (Ireland), but occasional afternoon meetings with other teams based on the US West Coast (LA and Seattle) are also possible. This role requires engineers with strong Java backend skills, solid web UI skills, a DevOps mindset , and familiarity with C++ client integration Responsibilities: Maintaining and improving large-scale distributed systems that support players globally Automate operational processes and reduce team toil (scripts, pipelines, diagnostic tools) Improve observability, monitoring, alerting, and deployment workflows Working on highly available backend services with strong operational rigor Supporting and extending the existing Game Client experience (Web UI surfaces built with HTML/CSS/JS and C++ integration points) Contributing to KTLO efforts , including quality improvements, bug fixes, and feature updates Participating in live operations , including on-call rotation, incident investigation, stability improvements, release validation, and root-cause analysis Collaborating across product, QA, design, art, and data teams to support seasonal content, offers, store changes, and monetization updates Feature delivery within established systems , often spanning multiple pods or workstreams Required Core Technical Skills: Backend Strong Java 21 expertise (main language for service maintenance/development) Distributed systems debugging and service-oriented architecture REST APIs, SQL data stores CI/CD systems (Cloudbees Jenkins ) Game Client Working familiarity with C++ for client integration fixes Understanding of client-server interactions (HTTP/REST) and data flow paths Web Surfaces & UI HTML, CSS, Javascript DevOps Tooling & Reliability Engineering Linux , Bash / Python scripting Observability platforms ( Datadog ) Version Control expertise ( Git , Perforce ) Incident response and postmortem practices ( Pagerduty ) Behavioural Expectations: High ownership over production health and system reliability Clear communicator during high-pressure situations (e.g. live incidents) Autonomy in navigating legacy systems and ambiguous problem spaces Strong collaboration with backend, client, QA, and operations teams Player-first thinking – minimizing downtime, regressions, and impact on players Nice To Have: Experience in the gaming industry, particularly with online multiplayer games Experience working with cross-discipline organizations that build data products

🏢 Summary: Senior Frontend Software Engineer role focused on building and maintaining complex web applications that power competitive tournament systems and public-facing experiences. The position involves end-to-end ownership of frontend features, including graph-based workflows, account management, and tournament operations. You will collaborate cross-functionally to deliver high-quality, scalable, and performant UI solutions integrated with backend services. 🗂️ Requirements: 5+ years frontend development experience, 4+ years experience with React, 4+ years experience with TypeScript, Bachelor's degree in Computer Science or related field, Senior-level experience building production frontend applications, Hands-on experience with GraphQL, Hands-on experience with Next.js including SSR and CSR, Experience integrating frontend with backend services, Understanding of modern frontend architecture, Knowledge of state management patterns, Experience with component-based design, Understanding of accessibility standards (WCAG), Ability to work in distributed teams across time zones 📃 Skills: React, TypeScript, JavaScript, GraphQL, Next.js, SSR, CSR, REST, Spring, HTML, CSS, WCAG 🏢 Description: About the role: Our client is one of the largest game studios known for its very successful online MOBA and FPS franchises. You will be part of a team that builds the systems and tools that power competitive play - from internal operator tooling used to create and manage tournaments, to player-facing web experiences that support competition at scale. We’re looking for a Senior Frontend Software Engineer to help us design and build complex frontend applications that support tournament creation, account management, and competition workflows. This role will work across internal operator tools as well as contribute to our public-facing experiences. This is a hands-on senior role where you’ll be expected to take ownership of features end-to-end, collaborate closely with product and backend partners, and deliver high-quality, maintainable frontend code. You will work closely with the engineering team in Los Angeles and other locations in the US West Coast. Due to working across multiple time zones, flexibility to attend later meetings on a daily basis is an important factor for success in this role (up to 9-10PM CEST). Each team member is expected to proactively propose tools, designs, and implementation strategies. Responsibilities: Design, build, and maintain frontend applications that support tournament setup, configuration, and operations. Work on complex UI workflows for creating and managing graph-based tournament structures. Contribute to public-facing web experiences with a focus on performance, usability, and polish. Collaborate closely with backend engineers, product managers, and designers to translate requirements into robust UI solutions. Integrate frontend applications with backend services, including GraphQL APIs and Java Spring REST APIs. Participate fully in team rituals, including 2-week sprints, planning, refinement, and retrospectives. Take clear ownership of your work - asking questions early, surfacing risks, and caring deeply about the quality of the end results Required qualifications: 5+ years of experience with Frontend Technologies 4+ years of experience with React and Typescript Bachelor's or higher degree in Computer Science , Software Engineering, or a related field Senior-level experience building production frontend applications. Hands-on experience with GraphQL and Next.js , including both SSR and CSR patterns. Experience integrating frontend applications with backend services (experience consuming Java Spring REST APIs is a plus). Solid understanding of modern frontend architecture, state management, and component design. Comfortable working independently in a remote environment while staying engaged and communicative. Understanding of accessibility standards and guidelines (e.g. WCAG) Nice to have: Working with PaaS Vendors like Netlify Hands-on experience working with Public Cloud, preferably AWS (Lambda/Serverless). Familiarity with complex data visualization or workflow-heavy UIs. Experience working on consumer-facing web products at scale. Familiarity with trading card games (TCGs) and tournament formats (e.g., Swiss rounds, decklists, brackets), or a strong interest in competitive gaming, esports. Familiarity with testing frameworks (e.g. JEST, RTL. Playwright) Experience with observability and monitoring tools, preferably Datadog

🏢 Summary: Frontend Engineer role focused on building and maintaining player-facing desktop game client applications using Electron and modern web technologies. The position centers on creating dynamic, high-quality UIs powered by web APIs and collaborating closely with cross-functional teams. The work includes developing complex frontend features, APIs, and comprehensive testing within a modern web architecture. 🗂️ Requirements: 6+ years of experience with frontend technologies, 5+ years of experience with React, Strong hands-on experience with TypeScript and React, Experience building Electron desktop applications, Experience working with RESTful APIs and web-based APIs, Proficiency in unit, integration, and end-to-end testing, Understanding of modern web architecture, Experience with Git and modern build tools, Ability to build UI from Figma or similar design tools, Knowledge of accessibility standards (WCAG), Bachelor’s degree in Computer Science or related field 📃 Skills: JavaScript, TypeScript, React, Electron, HTML, CSS, REST, API, Storybook, Jest, RTL, Playwright, Git, Webpack, Vite, JSON, XML, Docker, GitHub, AWS, Datadog 🏢 Description: About the role: Our client is one of the largest game studios known for its very successful online MOBA and FPS franchises. You will be part of a Player Platform team responsible for building and maintaining core player-facing client applications used across all the clients’ products. On a daily basis you will be working on the player-facing portion of the Game Client desktop application powered by Electron. The tech stack is JavaScript, TypeScript, React, CSS and HTML. The majority of work will be around building out dynamic and polished UIs in the frontend that are powered by API data which requires solid experience of working with web-based APIs. We leverage Storybook for our component development and use Jest for testing. This role will be embedded into the team and you will collaborate with team members closely including engineers, QA, design and product. You may also work with other partner teams directly. Experience with working on desktop client applications is a plus. Please note, availability to attend afternoon/evening meetings is a requirement for this role as most of the team is located on the US West Coast (LA and Seattle) Responsibilities: Partner closely with Senior Engineers and Design to create and iterate on well crafted user experiences Build out complex Electron applications that support the Game Client development Work with partner teams and platforms to bring experience to life Quickly iterate on prototypes and new areas to find feasible solutions for the products we are building Create, manage and document RESTful APIs Write and execute unit, integration and end-to-end tests, participate in code reviews Required qualifications: 6+ years of experience with Frontend Technologies 5+ years of experience with React Bachelor's or higher degree in Computer Science, Software Engineering, or a related field Strong frontend focus with the skills to dive into backend when needed - comfortable across the stack, but passionate about crafting great user-facing experiences Deep hands-on programming experience with Typescript and React Good understanding of modern web architecture and technologies Attention to detail, including spacing, CSS animations, and user experience nuances Understanding of accessibility standards and guidelines (e.g., WCAG) Aptitude for debugging, analyzing issues, and implementing effective solutions Experience building frontend interfaces directly from design mockups in Figma or similar tools Familiarity with testing frameworks (e.g., Jest, RTL, Playwright) Experience with version control tools (e.g., Git) and build tools (e.g., Webpack, Vite) Proficiency in building RESTful APIs and handling data formats like JSON/XML Effective communication and teamwork skills Nice to have: Experience with building Electron desktop applications Experience with CI/CD - Docker, Github Actions Hands-on experience working with Public Cloud, preferably AWS Experience with observability and monitoring tools, preferably Datadog

🏢 Summary: Frontend Engineer role focused on leading and evolving the architecture of digital draw game clients. Responsible for building and optimizing scalable, event-driven frontend systems using a modern React and TypeScript stack, enabling real-time gameplay and backend communication. The position includes ownership of client frameworks, build pipelines, and technical alignment with external studios. 🗂️ Requirements: 5+ years developing complex frontend applications, Strong experience with React, Strong experience with TypeScript, Hands-on experience with HTML5 game technologies, Experience building interactive web applications, Strong knowledge of state-driven systems, Strong knowledge of event-driven systems, Deep understanding of asynchronous programming, Proficiency with Vite, Experience with CSS frameworks, Experience with automated testing environments, Experience with Git and version control workflows 📃 Skills: React, TypeScript, Vite, HTML5, Three.js, PlayCanvas, JavaScript, Tailwind, CSS, Git, Testing, Asynchronous 🏢 Description: Frontend developer We are looking for an experienced Engineer to take technical ownership of the frontend architecture powering our digital draw games. In this role, you will design and maintain the core client frameworks that enable the integration of various game categories with our platform, defining how games handle lifecycles, player interactions, and real-time backend communication. Responsibilities: Architectural Leadership: Lead the evolution of frontend frameworks and reusable client foundations to support diverse game paradigms. Core Development: Build and optimize frontend systems using a modern stack including React, TypeScript, and Vite . Communication Patterns: Implement robust, event-driven client-server interactions for both on-demand and real-time gameplay. Technical Translation: Turn complex gameplay flows, UX layouts, and production specs into scalable, high-performance implementations. External Partnership: Act as a technical guide for external development studios, ensuring their games align with our architectural standards. Standards & Quality: Enforce coding standards, manage build pipelines, and identify technical bottlenecks or risks early in the lifecycle. Requirements: 5+ years of experience developing complex frontend applications with a focus on React and TypeScript . Hands-on experience with HTML5 game technologies , such as Three.js or PlayCanvas , and building interactive web applications. Strong background in state-driven and event-driven systems , including a deep understanding of asynchronous programming. Proficiency with modern tooling, including Vite, CSS frameworks (like Tailwind) , and automated testing environments. Collaboration Skills: Proven ability to work alongside designers and backend teams to translate product concepts into technical reality. Workflow Expertise: Solid experience with Git , version control practices, and managing collaborative development workflows.

🏢 Summary: Senior Software Engineer role focused on designing and developing scalable backend and fullstack applications using modern C++ in Linux environments. The position involves performance optimization, concurrency, and cloud-native technologies while contributing to high-impact product features. It requires strong ownership, collaboration, and the ability to work across diverse technologies including cloud and DevOps tools. 🗂️ Requirements: 6+ years of C++ development experience, Strong knowledge of multithreading, Strong knowledge of memory management, Experience with performance optimization, Experience developing backend systems, Experience with REST APIs, Experience working in Linux environments, Ability to design and maintain scalable systems, Bachelor’s degree in STEM field 📃 Skills: C++, Linux, REST, Multithreading, AWS, Python, Go, Terraform, CloudFormation, GitHub, Jenkins, Artifactory, Ansible 🏢 Description: Senior Software Engineer – C++ We are looking for a talented Senior Software Engineer to join our team. This role is ideal for someone with deep experience in C++ development , backend skills, and exposure to cloud-native technologies. You will work on challenging projects, contribute to high-impact features, and help shape the future of our products. What You’ll Do Design, develop, and maintain scalable backend systems in C++ (modern C++ preferred) Work on fullstack applications , including REST API-based backend services Optimize software for performance, concurrency, and memory efficiency Develop and maintain applications in Linux environments Take ownership of technical tasks, delivering high-quality results independently Collaborate closely with cross-functional teams, contributing to design and technical discussions Explore new technologies and expand beyond your primary stack, including Python, Go, and AWS Apply a product-focused mindset, understanding the business impact of your technical decisions What We’re Looking For 6+ years of hands-on experience in C++ development Solid understanding of multithreading, memory management, and performance optimization Strong experience contributing to complex features with exposure to diverse technologies Proven ability to work effectively in a team and communicate clearly Experience with Linux-based systems and development in Linux environments Self-motivated, independent, and capable of delivering results with limited supervision Bachelor’s degree in Science, Technology, Engineering, or a related field Nice to Have Experience with Go and/or Python Knowledge of cloud-native development and Infrastructure-as-Code tools (Terraform, CloudFormation) Background in enterprise-scale applications or AWS serverless architectures Familiarity with networking protocols, security best practices, and database systems Experience with modern CI/CD pipelines (GitHub, Jenkins, Artifactory, Ansible)

🏢 Summary: Backend C++ Developer role focused on building and modernizing mission-critical, distributed betting platform systems in the cloud. The position involves designing scalable microservices, implementing integrations, and supporting the full software development lifecycle from design to production. You will contribute to upgrading administrative and reporting systems to modern web-based architectures. 🗂️ Requirements: 2–5 years experience developing mission-critical backend systems in product-based companies, Strong C++ expertise, Experience building distributed and scalable systems, Experience with full production application lifecycle, Proficiency in SQL, Experience with microservices architecture, Experience using Kafka and Docker, Knowledge of HTTP, REST, and WebSocket, Experience with CI/CD systems (e.g., Jenkins), Experience with third-party integrations and SDKs, Proficiency with Git, Experience with test-driven development 📃 Skills: C++, SQL, Kafka, Docker, Microservices, HTTP, REST, WebSocket, Jenkins, CICD, Git, Jira, Confluence, TDD 🏢 Description: Client Our client is one of the biggest betting communities, having pioneered the betting exchange in 2000. Driven by cutting-edge technology, the company operates the world’s largest online betting exchange. Responsibilities Participation in a large-scale effort to upgrade our administrative, reporting, and control systems to modern, scalable, and secure web technologies in the cloud Participate in the software development process from design to release, including design, document and develop solutions as well as server code review and peer design activities Review existing or create new functional and design specifications that provide for all business requirements Designing efficient algorithms and implementing those in code to support the entire SDLC, including source control management and delivery pipelines Design and implement integrations of frontend and backend services that will drive our extensive dynamic collection of web applications Review and investigate production issues Provide development status updates to various stakeholders Balance multiple priorities with minimal supervision while working under tight deadlines Requirements 2-5 years of experience in the development of mission-critical backend systems in product-based companies Excellent C++ experience with through understanding of building distributed and scalable systems Exposure to the full lifecycle on a production stage enterprise application delivery Knowledge of the SQL scripting language Experience with Microservices architecture using Kafka and Docker Understanding of the modern web architectural patterns, knowledge of such technologies as HTTP(S), REST, and WebSocket Experience with CI&CD systems (Jenkins or similar) Strong communication and interpersonal skills, attention to detail, and ability to work with a remote team in a highly flexible remote environment Experience with using 3rd party integration tools and SDKs Experience with AWS and development for the cloud is an asset Comfortable with Git, Jira, and Confluence Knowledgeable with test-driven development Good spoken English

🏢 Summary: Senior Software Engineer, Web role focused on building scalable, high-performance web applications using Next.js and modern front-end technologies. The position involves end-to-end development, performance optimization, and contributing to front-end architecture and best practices. The engineer collaborates cross-functionally to deliver secure, accessible, and reliable web experiences. 🗂️ Requirements: Bachelor’s or Master’s degree in Computer Science or related field, 6–8 years professional software engineering experience, Strong proficiency in Next.js, React, TypeScript, JavaScript, HTML5, CSS3, Experience with GraphQL and REST APIs, Experience with SSR and SSG, Knowledge of CDN strategies and caching, Experience with performance optimization tools, Understanding of front-end security best practices, Experience with Git and CI/CD pipelines, Exposure to AWS or GCP 📃 Skills: Next.js, React, TypeScript, JavaScript, HTML5, CSS3, GraphQL, REST, SSR, SSG, CDN, Lighthouse, WebPageTest, Chrome, Git, CI/CD, AWS, GCP, ethers.js 🏢 Description: #5193 Company Overview Our client is a leading, fully regulated US-based digital asset trading platform. They provide secure, low-latency access to cryptocurrency markets, acting as a bridge between traditional finance and the Web3 ecosystem. About This Role The Senior Software Engineer, Web is part of the Engineering team and reports to our Manager, Engineering. As a Senior Software Engineer, Web, you will be responsible for designing and building scalable, high-performance web applications using Next.js and modern front-end technologies. You will partner with Product, Design, Backend, and DevOps teams to deliver performant, accessible, and secure user experiences while contributing to front-end architecture and engineering best practices. Key Responsibilities Design and implement scalable front-end features using Next.js, React, and TypeScript. Own end-to-end development of web features, including testing, deployment, and maintenance. Build modular and reusable UI components to support scalable development. Optimize web performance through SSR/SSG, lazy loading, and responsive design techniques. Monitor and improve performance metrics such as page load time, TTI, and Core Web Vitals. Collaborate cross-functionally with Product, Design, Backend, and DevOps teams to define requirements and deliver features. Contribute to front-end architecture decisions and engineering best practices. Participate in code reviews and mentor junior engineers to improve code quality and team standards. Partner with DevOps to support CI/CD pipelines and reliable deployment processes. Ensure high standards in code quality, accessibility, security, and automated testing (unit, integration, E2E). Required Qualifications Bachelor’s or Master’s degree in Computer Science or related field. ~8 years of professional software engineering experience, or ~6 with an advanced degree. Strong communication and collaboration skills, motivation, problem solving mind set. Strong proficiency in Next.js, React, TypeScript, JavaScript, HTML5, and CSS3. Strong experience with GraphQL and REST API. Experience with performance optimization tools (Lighthouse, WebPageTest, Chrome DevTools). Solid understanding of SSR/SSG, CDN strategies, caching, and responsive design principles. Familiarity with front-end security best practices. Experience with Git, CI/CD pipelines, and modern deployment workflows. Exposure to cloud platforms such as AWS or GCP. Strong collaboration skills working with Product, Design, and Backend teams. Experience mentoring junior engineers and contributing to team development. Bonus: Experience with analytics instrumentation or blockchain-integrated front-ends (e.g.,ethers.js, wallet integrations).

🏢 Summary: Lead FullStack Engineer role focused on building and scaling high-traffic, public-facing web platforms for a large online marketplace. The position involves leveraging AI tools within the SDLC, owning end-to-end development processes, and delivering performant, production-ready solutions across frontend and backend systems. 🗂️ Requirements: 5+ years of experience building reliable, scalable, highly available systems, Strong knowledge of software architecture and design patterns, Experience applying clean code principles and coding standards, Proficiency with AI development tools and integrating them into SDLC, Experience with AI frameworks, Strong backend development experience with C# or Node.js, Strong proficiency in TypeScript, Strong experience with SQL and NoSQL databases, Strong frontend development skills (HTML, CSS, JavaScript), Experience with component-based frameworks and SSR, Experience with cloud infrastructure and containerization tools, Experience building and consuming APIs in service-based architectures, Experience with CI/CD pipelines, Experience with logging and monitoring tools, Experience with unit testing (backend and frontend), Upper-intermediate English, Availability to work in required time zones 📃 Skills: C#, Node.js, TypeScript, SQL, NoSQL, GraphQL, Redis, HTML, CSS, JavaScript, React, Next.js, Vue.js, Angular, AWS, Terraform, Docker, Git, CI/CD, Datadog, NewRelic, LangChain, Vercel, ChatGPT, Codex 🏢 Description: About the client: Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers. Responsibilities: Developing fast, high-traffic public-facing websites Explore new technologies and help the team to use them Work using AI tools and apply them to the SDLC Following software development best practices while delivering the work Following testing principles while testing your own code to ensure production readiness Follow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes) Requirements: 5+ years developing reliable, highly available, and scalable software systems Strong understanding of software architecture and design patterns Firm grasp of clean code principles and coding standards Strong proficiency using AI tooling , such as ChatGPT/Codex, for rapid development Experience integrating AI tooling into your development environment for streamlined usage Experience with AI Frameworks like Vercel AI SDK, LangChain, etc. Strong proficiency with backend development with C# or Node.js Strong proficiency with TypeScript Strong proficiency with SQL& NoSQL datastores (GraphQL, Redis) Strong proficiency with frontend development (HTML, CSS, JavaScript) Strong proficiency with component-based frameworks and SSR (Next.js/React or Vue.js) or Angular with the desire to learn React/ Vue.js. Hands-on experience developing and maintaining 3rd party content management systems Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker Experience with APIs and developing in a service-based application environment Experience building optimized UIs for performance Proficiency with version control systems such as Git Experience working within a formal CI/CD pipeline Experience with logging, monitoring, and alerting services like Datadog, Newrelic Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend At least Upper-intermediate English level This role requires mandatory timezone coverage: work must align with the Toronto (ET) timezone for LATAM hours and 13:00–21:00 EET for EU hours approximately. We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers

🏢 Summary: Senior Full-stack Engineer role focused on building and scaling a modern B2B SaaS platform for subscription-based e-commerce. The position involves end-to-end feature delivery, architectural decisions, and improving system scalability and reliability. High-impact role with strong ownership over technical direction and product evolution. 🗂️ Requirements: 7+ years engineering experience in complex systems, Strong system design skills, Experience designing scalable architectures, Full-stack development experience, Experience building SaaS platforms, Experience with e-commerce systems 📃 Skills: JavaScript, TypeScript, SaaS, Architecture, Scalability, Reliability, APIs, Ecommerce, Payments, Cloud 🏢 Description: Senior Full-stack Engineer Our client is building a modern B2B SaaS platform that enables businesses to launch and scale subscription-based models for physical and digital products. The product sits at the intersection of e-commerce, payments, and developer tooling, with a strong focus on extensibility and developer experience. The team is lean, senior, and highly experienced, backed by strong investors and industry advisors. They operate with high autonomy, fast execution, and strong ownership culture. Role We are looking for a Senior Full-stack Engineer to help shape the next evolution of the platform. You will work across architecture, product, and infrastructure, focusing on scalability, reliability, and developer experience. This is a high-impact role where you will influence both technical direction and product decisions. Responsibilities Build and evolve a scalable SaaS platform Design and deliver new features end-to-end Improve performance, reliability, and system architecture Collaborate with product, design, and growth teams Requirements 7+ years of engineering experience in complex systems Strong architectural and system design skills Ability to choose appropriate technologies per problem Experience working in cross-functional teams Strong communication in Polish and English Startup mindset: ownership, speed, adaptability Experience with e-commerce platforms is a plus Offer High-impact role in a senior engineering team with real product ownership and influence. Competitive salary plus ESOP, fully remote work (Poland), regular team offsites, and modern tooling including MacBook Pro and AI credits. Direct access to founders, investors, and advisors.

🏢 Summary: Senior Frontend Architect role focused on building and evolving scalable frontend architecture for multiple HTML5 game clients. The position involves developing reusable frameworks, implementing real-time client-server communication, and delivering interactive web-based game experiences using modern frontend technologies. The role also ensures architectural standards, performance, and compliance across game clients. 🗂️ Requirements: 5+ years experience with React and TypeScript, Experience with HTML5 game technologies (Three.js or PlayCanvas), Experience building interactive or real-time web applications, Strong knowledge of event-driven or state-driven frontend architectures, Solid understanding of asynchronous programming and real-time client-server communication, Experience with Vite and modern CSS frameworks, Experience with automated frontend testing frameworks, Strong experience with Git and version control workflows, Ability to design scalable frontend architectures 📃 Skills: React, TypeScript, JavaScript, HTML5, CSS, Vite, Tailwind, Three.js, PlayCanvas, Git, WebSockets, Testing 🏢 Description: Key responsibilities: Own and evolve the frontend architecture and technical frameworks used across multiple game clients. Design and maintain reusable client foundations and game category frameworks supporting different game paradigms. Develop and maintain frontend systems using React, TypeScript, Vite, and modern CSS frameworks. Implement and maintain event-driven client-server communication patterns for realtime and on-demand gameplay flows. Translate gameplay flows, UX layouts, and production specifications into scalable frontend implementations. Support and guide external development studios building game experiences on top of the client frameworks. Maintain and manage source code repositories, versioning practices, and build pipelines for game clients. Define and enforce frontend architecture patterns, testing practices, and coding standards. Collaborate with product, design, backend, and QA teams to ensure smooth integration and reliable player experiences. Identify architectural risks, performance bottlenecks, and technical dependencies early and drive resolution. Ensure all game clients comply with technical, operational, and regulatory requirements Reguirements: 5+ years of experience developing complex frontend applications using React and TypeScript. Experience with HTML5 game development technologies, such as Three.js or PlayCanva s. Experience building interactive or real-time graphical applications for the web. Experience working with external development studios or distributed engineering teams. Strong experience building state-driven or event-driven frontend systems. Solid understanding of asynchronous programming and real-time client-server interactions. Experience with modern frontend tooling such as Vite, CSS frameworks (e.g., Tailwind), and automated testing frameworks . Strong experience with Git, version control, and collaborative development workflows . Ability to translate product and UX concepts into robust technical implementations. Experience collaborating with designers, backend engineers, and product teams. Strong problem-solving and communication skills. Nice to have: Experience working in regulated, transactional, or high-reliability environments is a plus. Client: A global leader with a sharp focus on lottery solutions. A confident step forward building on a long history of delivering safe and secure technology, demonstrating strong commitment to customers as a dedicated lottery service provider. Leveraging collective insight, experience, and expertise to create reliable and engaging solutions that help lottery clients achieve objectives, meet player needs, and deliver meaningful benefits to communities.