📍 Job Overview
Job Title: Senior Fullstack UI Developer (Trading Platform)
Company: Crypto.com
Location: Hong Kong, Hong Kong SAR
Job Type: Full-time
Category: UI Development / Fullstack Development
Date Posted: 2025-06-11
Experience Level: Senior (5+ years)
Remote Status: Hybrid or Remote
🎨 Role Summary
- Design and develop high-performance, real-time WebUIs for a multi-asset trading platform, focusing on intuitive and responsive user interfaces for complex financial instruments.
- Build sophisticated UI components using modern frontend frameworks (React.js, Next.js, Ag-Grid) with an emphasis on modularity, performance optimization, and scalability in a microfrontend environment.
- Integrate frontend applications with low-latency backend systems, including real-time data streaming protocols and APIs, ensuring seamless data flow and execution.
- Collaborate closely with cross-functional teams, including backend engineers, product managers, and traders, to translate complex trading workflows into user-friendly interfaces and ensure fullstack feature delivery.
🖼️ Primary Responsibilities
- Design, develop, and maintain robust, high-performance WebUIs for critical trading functions, including order entry, real-time blotters, position management, and charting, employing best practices in responsive design and performance tuning.
- Lead the development of advanced, reusable UI components using React.js, Next.js, and Ag-Grid, ensuring components are performant, accessible, and align with design system standards.
- Translate detailed trading requirements and complex financial workflows, such as options and multi-leg strategies, into intuitive and efficient user interface designs and implementations.
- Establish and maintain seamless integration between the frontend and real-time backend systems using technologies like AMPS, ViewServer, WebSockets, and REST APIs, ensuring data accuracy and low-latency updates.
- Contribute to the design and implementation of microfrontend and microservices architectures, promoting scalability, maintainability, and independent deployment in a multi-team development environment.
- Collaborate effectively with backend engineering teams (Java, Python) and other stakeholders throughout the software development lifecycle, from requirements gathering to deployment and support, ensuring cohesive fullstack feature delivery.
- Utilize AI-assisted development tools (e.g., GitHub Copilot, CodeWhisperer) to enhance coding efficiency and explore innovative solutions while upholding rigorous code quality standards through code reviews and testing.
- Actively participate in architectural discussions, code reviews, and performance optimization initiatives to ensure the trading platform's UI is robust, scalable, and meets stringent performance requirements.
🎓 Skills & Qualifications
Education: While not explicitly stated, a Bachelor's or Master's degree in Computer Science, Engineering, or a related technical field is typically preferred for a Senior-level role in a financial technology company. Equivalent practical experience with a strong portfolio demonstrating relevant skills may also be considered.
Experience: Minimum 5+ years of hands-on experience in frontend or fullstack development, with a significant portion of that experience ideally gained within the trading or financial systems domain. A strong portfolio showcasing experience with complex UI development, real-time data visualization, and integration with backend systems is crucial.
Required Skills:
- Deep expertise in React.js and Next.js for building modern, server-rendered, and performant web applications.
- Extensive experience with Ag-Grid for developing complex, data-intensive grid interfaces common in trading applications.
- Solid understanding and practical experience integrating frontend applications with real-time streaming backends and various API types (WebSocket, REST).
- Proven experience with Java for backend development, including API implementation, business logic, and data handling, specifically in a collaborative fullstack context.
- Strong understanding of trading concepts, including order lifecycle, market data, and financial instruments (spot, futures, options).
- Experience with modern state management libraries (e.g., Redux, MobX, XState) tailored for complex, real-time applications.
- Familiarity with microfrontend architecture principles and UI composition techniques for building scalable and maintainable user interfaces in a distributed environment.
- Proficiency in frontend tooling, build processes, performance profiling, and optimization techniques.
- Experience with automated testing frameworks for frontend and potentially integrated fullstack tests.
Preferred Skills:
- Experience with specific real-time messaging systems like AMPS or ViewServer.
- Familiarity with low-latency programming concepts and performance-critical systems.
- Experience using AI-powered development tools for code generation, analysis, and productivity enhancement.
- Prior experience in the cryptocurrency trading space.
- Knowledge of additional backend languages or frameworks relevant to trading systems (e.g., Python).
🎨 Portfolio & Creative Requirements
Portfolio Essentials:
- Showcase projects demonstrating experience building complex, data-intensive user interfaces, particularly for financial or trading applications.
- Include case studies that detail your approach to designing and implementing real-time data visualizations and interactive components.
- Highlight projects where you integrated frontend applications with backend systems, explaining the technical challenges and solutions.
- Present examples of reusable UI components you have built and how they contributed to the scalability and maintainability of a project.
Process Documentation:
- Document your design and development process, including how you translate requirements into technical solutions and collaborate with stakeholders.
- Explain your approach to handling real-time data streams and ensuring UI responsiveness under high-throughput conditions.
- Detail your methods for performance optimization and debugging in complex frontend applications.
💵 Compensation & Benefits
Salary Range: Given the Senior level, specialized domain (FinTech/Crypto), and location (Hong Kong), the estimated annual salary range for this role is likely between HKD 700,000 and HKD 1,200,000. This estimate is based on industry benchmarks for senior fullstack developers with trading system experience in Hong Kong, considering the cost of living and the competitive nature of the financial technology sector in the region. Actual compensation may vary based on experience, skills, and negotiation.
Benefits:
- Competitive salary package designed to attract top talent in the FinTech space.
- Attractive annual leave entitlement, including specific allowances for occasions like birthdays and work anniversaries, promoting work-life balance.
- Flexible working arrangements, including flexi-work hours and hybrid or remote setup options, supporting diverse employee needs and global team collaboration.
- Opportunities for career advancement through an internal mobility program, encouraging employees to explore different roles and develop new skill sets within the organization.
- Inclusion in the Crypto.com Visa Card program upon joining, providing access to various benefits associated with the card.
- Comprehensive benefits package that varies by region, tailored to meet local requirements and employee needs (details available from the talent acquisition team).
Working Hours: The role involves collaboration with a global team across different time zones (APAC, EMEA, North America). While standard working hours may apply, flexibility might be required to accommodate meetings and collaboration with colleagues in other regions, potentially utilizing flexi-work hours as mentioned in the benefits.
🎯Team & Company Context
🏢 Company & Design Culture
Industry: Financial Services / Cryptocurrency. Crypto.com is a leading global cryptocurrency platform focused on accelerating the adoption of digital currencies through innovative products and services.
Company Size: 1,001-5,000 employees globally. Being part of a large, rapidly growing organization means working in a dynamic environment with established processes but also opportunities to contribute to evolving structures and practices.
Founded: 2016. Founded with the vision of "Cryptocurrency in Every Wallet™", Crypto.com has rapidly expanded its offerings and global presence, positioning itself as a key player in the digital asset space.
Team Structure:
- The role is within the Trading Infrastructure team, which focuses on building a high-performance trading platform.
- The team likely follows a matrix or agile structure, with cross-functional pods or teams focused on specific components or features of the trading platform.
- Collaboration with backend teams (Java, Python), product managers, and potentially quantitative analysts or traders is essential.
Methodology:
- The team emphasizes an event-driven, deterministic system design and real-time observability, suggesting a focus on robust, high-availability systems typical in financial trading.
- Modern CI/CD tooling is utilized, indicating a commitment to automation, continuous integration, and continuous delivery.
- Agile development methodologies (Scrum, Kanban) are likely employed to manage workflow and deliver features iteratively.
Company Website: https://crypto.com
📈 Career & Growth Analysis
Design Career Level: This is a Senior-level Fullstack UI Developer role. At this level, the expectation is for significant technical expertise, the ability to take ownership of complex features, mentor junior colleagues, and contribute to architectural decisions within the UI and integration layers of the trading platform.
Reporting Structure: The role likely reports to an Engineering Manager or Team Lead within the Trading Infrastructure team. Collaboration will be extensive across the team and with other engineering, product, and business units.
Design Impact: As a Senior Fullstack UI Developer on the trading platform team, your work will directly impact the user experience and performance for traders, which is critical for a financial platform. Your contributions to the UI's responsiveness, functionality, and reliability will directly influence user adoption and trading activity.
Growth Opportunities:
- Opportunity to deepen expertise in building high-performance, real-time trading interfaces and systems, a highly valuable skill set in the FinTech industry.
- Potential to move into technical leadership roles (e.g., Team Lead, Principal Engineer) focusing on frontend architecture or fullstack development within the trading domain.
- Opportunities to mentor junior developers and contribute to the growth of the team.
🌐 Work Environment
Studio Type: While a specific "studio type" isn't mentioned, the role is based in Hong Kong with a hybrid or remote option. This suggests a blend of in-office presence (potentially for team collaboration or specific meetings) and remote work flexibility.
Office Location(s): Hong Kong, Hong Kong SAR. Crypto.com has offices globally, but this role is specifically tied to the Hong Kong location, although remote work is possible.
Design Workspace Context:
- For hybrid or on-site work, the office environment in Hong Kong would likely be a professional, modern office space suitable for technical teams.
- Collaboration spaces and tools would be available to facilitate interaction between team members, whether in-person or remote.
- The work environment is likely fast-paced and requires adaptability to changing priorities in the dynamic cryptocurrency market.
Work Schedule: The role offers flexi-work hours and hybrid or remote setup, providing flexibility. However, collaboration with a global team may necessitate adjusting working hours to overlap with colleagues in different time zones.
📄 Application & Portfolio Review Process
Design Interview Process:
- Initial screening call with a recruiter to discuss experience and fit.
- Technical interviews focusing on frontend skills (React, Next.js, Ag-Grid), backend knowledge (Java), data structures, algorithms, and system design, particularly related to real-time systems and trading platforms. Be prepared for coding exercises or technical challenges.
- Interviews with team members and/or the hiring manager to assess technical depth, problem-solving skills, collaboration style, and experience with trading systems. Expect questions about past projects and how you handled complex technical challenges.
- Potential interview focused on behavioral questions, cultural fit, and your ability to work in a fast-paced, global environment.
Portfolio Review Tips:
- Tailor your portfolio to highlight projects relevant to building complex, performant user interfaces, especially those involving real-time data and financial or trading concepts.
- For each project, clearly articulate the problem you solved, your role, the technologies used (specifically mentioning React, Next.js, Ag-Grid, and Java if applicable), and the impact of your work.
- Include case studies that demonstrate your technical approach to building interactive and data-intensive UI components.
- If possible, showcase examples of performance optimization techniques you employed in your projects.
Challenge Preparation:
- Be prepared for potential coding challenges focused on frontend development (e.g., building a React component, handling real-time data updates) and potentially some backend integration aspects.
- Practice explaining your thought process clearly while solving coding problems.
- Review fundamental computer science concepts relevant to performance and scalability.
ATS Keywords: Fullstack UI Developer, Senior Fullstack, React.js, Next.js, Ag-Grid, Java, Trading Platform, Financial Systems, Real-Time Systems, WebSocket, REST API, Microfrontend, Microservices, State Management (Redux, MobX, XState), Performance Optimization, Code Quality, CI/CD, Agile, Scrum, Kanban, Git, Testing, Debugging, Problem-Solving, Collaboration, Communication, AI-Assisted Development, Cryptocurrency, Blockchain, Low-Latency, Market Data, Order Lifecycle, Options Trading, Futures Trading, Blotter, Risk Dashboard, Charting. (Organized by category: Technical Skills, Domain Expertise, Methodologies, Soft Skills, Industry Terms)
🛠 Tools & Technology Stack
Primary Design Tools: While this is a development role, the focus on UI means familiarity with design principles and potentially collaboration with designers using tools like Figma or Sketch may be beneficial, though not explicitly required development tools.
Primary Development Tools:
- React.js: Core library for building the user interface components and structure. Expect to demonstrate deep knowledge of React principles, hooks, and ecosystem.
- Next.js: Framework for server-rendered React applications, likely used for performance and SEO benefits in a trading platform context.
- Ag-Grid: Essential for building high-performance, feature-rich data grids commonly used in trading blotters and views. Expertise in configuring and optimizing Ag-Grid for large datasets is critical.
- Java: Required for backend development and integration. Expect to work with Java APIs and business logic layers.
- Python: Mentioned as part of the backend tech stack; familiarity or experience with Python can be beneficial for collaboration.
Collaboration & Handoff:
- Collaboration tools like Slack, Microsoft Teams, or similar are likely used for team communication and cross-functional interaction.
- Version control systems, primarily Git, are used for code management and collaboration.
- CI/CD tooling (e.g., Jenkins, GitLab CI, GitHub Actions) for automated builds, testing, and deployments.
Research & Testing:
- Testing frameworks for frontend (e.g., Jest, React Testing Library) and potentially integrated tests for fullstack features.
- Performance profiling tools for identifying and resolving UI bottlenecks.
- Real-time observability tools for monitoring system health and performance.
👥 Team Culture & Values
Design Values: While not a traditional design role, the emphasis on high-performance WebUIs suggests values aligned with:
- User-Centricity: Translating complex workflows into intuitive interfaces indicates a focus on the needs of traders and users.
- Performance: The focus on low-latency and high-performance UIs highlights a value placed on speed and efficiency in the user experience.
- Reliability: Building robust systems for trading functions underscores the importance of stability and accuracy.
- Innovation: Utilizing modern tech stack components and potentially AI-assisted tools suggests a willingness to adopt new technologies and approaches.
Collaboration Style:
- The role requires collaboration with a global team, suggesting a need for effective communication across different cultures and time zones.
- Collaboration with backend teams and cross-functional stakeholders is essential for delivering fullstack features.
- A culture of code reviews and architectural discussions is likely present to ensure code quality and system robustness.
⚡ Challenges & Growth Opportunities
Design Challenges:
- Building and maintaining high-performance, real-time user interfaces that can handle large volumes of market data and trading activity without compromising responsiveness.
- Translating complex financial concepts and trading strategies into intuitive and user-friendly UI components and workflows.
- Integrating frontend applications seamlessly with diverse and potentially legacy backend systems while ensuring data consistency and low latency.
- Working within a rapidly evolving industry (cryptocurrency) and trading environment, requiring continuous learning and adaptation to new technologies and market dynamics.
Learning & Development Opportunities:
- Gain deep expertise in building trading platforms and real-time financial systems, a highly sought-after skill set.
- Opportunity to work with and learn from experienced engineers in the FinTech and cryptocurrency space.
- Potential for learning new technologies and methodologies as the platform evolves.
- Exposure to global teams and diverse perspectives, enhancing collaboration and communication skills.
💡 Interview Preparation
Design Process Questions:
- Describe your process for designing and implementing a complex UI component that needs to display and update real-time data efficiently. Prepare to discuss specific examples from your portfolio.
- How do you approach integrating a frontend application with a real-time streaming backend? Discuss the technical considerations and potential challenges.
- Explain your strategy for ensuring the performance and responsiveness of a data-intensive web application, especially under high load.
Company Culture Questions:
- What interests you about working on a trading platform in the cryptocurrency space at Crypto.com? Research the company's products and recent developments.
- Describe your experience working with cross-functional teams (e.g., backend engineers, product managers). How do you ensure effective collaboration and communication?
- How do you stay updated on the latest frontend technologies and best practices, especially in the context of building high-performance applications?
Portfolio Presentation Strategy:
- Prepare to walk through 1-2 key projects from your portfolio that best demonstrate your skills in building complex, data-intensive UIs and integrating with backend systems.
- Focus on explaining the technical challenges you faced and how you solved them, highlighting your use of React, Next.js, Ag-Grid, and Java (if applicable).
- Clearly articulate your role and contributions to each project.
📌 Application Steps
To apply for this design position:
- Submit your application through this link
- Customize your resume and cover letter (if applicable) to highlight your experience with React.js, Next.js, Ag-Grid, Java, and your experience in trading or financial systems. Use relevant keywords from the ATS keywords list.
- Prepare your portfolio to showcase projects that demonstrate your ability to build high-performance, data-intensive UIs and integrate with backend systems. Select case studies that explain your technical process and the impact of your work.
- Research Crypto.com, its trading platform, and its values to prepare for interview questions and demonstrate your interest in the company and the role.