UI React Developer (AG Grid)

📍 Job Overview

Job Title: UI React Developer (AG Grid)

Company: Jay Analytix

Location: Toronto, ON, Canada

Job Type: CONTRACTOR

Category: Front-End Development / UI Engineering

Date Posted: August 21, 2026

Experience Level: Mid-Senior Level (5-10 years)

Remote Status: Hybrid

🚀 Role Summary

• Develop and maintain high-performance, responsive web applications leveraging ReactJS and TypeScript.

• Implement and optimize complex UI components, particularly focusing on data-intensive interfaces using AG Grid.

• Collaborate within a hybrid work model, bridging the gap between onsite and remote team members.

• Contribute to the full software development lifecycle for modern financial technology solutions within the banking sector.

• Ensure seamless integration of front-end applications with backend services and real-time data streams.

📝 Enhancement Note: While the job title is "UI React Developer," the emphasis on AG Grid, real-time systems, and banking domain experience suggests a role with a strong focus on data visualization and financial trading platforms, often found in high-frequency trading environments. The "CONTRACTOR" employment type indicates a project-based engagement, likely requiring immediate impact and specialized skill sets.

📈 Primary Responsibilities

• Design, develop, and implement robust, scalable, and responsive user interfaces using ReactJS and TypeScript.

• Integrate and configure AG Grid for efficient display and manipulation of large datasets, ensuring optimal performance and user experience.

• Develop reusable, maintainable UI components adhering to front-end best practices and coding standards.

• Collaborate closely with UX/UI designers, product managers, and backend engineers to translate complex business requirements into technical specifications and functional features.

• Optimize UI performance, ensuring smooth handling of intricate workflows and substantial data volumes within real-time systems.

• Participate actively in code reviews, unit testing, and integration testing to uphold code quality and system reliability.

• Troubleshoot and debug UI-related issues, providing timely and effective solutions.

• Effectively communicate technical concepts, progress, and challenges to both technical and non-technical stakeholders.

• Contribute to the continuous improvement of front-end development processes and methodologies.

📝 Enhancement Note: The responsibilities highlight a need for a developer who can not only build standard web applications but also manage complex data grids and real-time data flows, common in financial services. The mention of "desktop apps with ReactJS using frameworks like Electron.js" points towards potential development of internal tools or specialized client applications, requiring a broader understanding of desktop integration.

🎓 Skills & Qualifications

Education:

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience. Experience:

• Minimum of 5 years of professional experience in UI/front-end development.

• Proven track record of delivering complex, responsive web applications.

• Demonstrated experience working within the banking or financial services domain. Required Skills:

• ReactJS: Expert-level proficiency in building modern, component-based user interfaces.

• TypeScript: Strong command of TypeScript for robust, type-safe JavaScript development.

• AG Grid: Extensive hands-on experience with AG Grid for data-intensive applications, including customization and performance tuning.

• Responsive Design: Ability to create UIs that adapt seamlessly across various devices and screen sizes.

• Real-time Systems: Experience working with applications that process and display data in real-time.

• Communication Skills: Excellent verbal and written communication, with the ability to articulate technical details clearly to diverse audiences.

• Banking Domain Knowledge: Practical understanding of financial industry workflows, regulations, and common application patterns.

Preferred Skills:

• Electron.js: Experience developing desktop applications using ReactJS and Electron.js.

• Server-Side Grids/Data Tables: Familiarity with implementing server-driven data management solutions for large datasets.

• Large Datasets: Experience managing and rendering very large volumes of data efficiently within UI applications.

• AMPS Messaging Platform: Exposure to or experience with the AMPS messaging platform, often used in financial trading.

• FDC3 Standards: Familiarity with Financial Desktop Connectivity Consortium (FDC3) standards for interoperability in financial desktops.

• Performance Optimization: Advanced techniques for optimizing UI rendering, data loading, and application responsiveness.

• Agile Methodologies: Experience working in Agile development environments.

📝 Enhancement Note: The "Nice-to-Have Skills" are highly specific to financial trading platforms. Experience with AG Grid, server-side grids, large datasets, and especially AMPS and FDC3, indicates a specialized role likely within a trading desk or financial analytics application development team. Developers with these niche skills will be highly sought after.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase at least two significant projects demonstrating advanced ReactJS and TypeScript development.

• Include a project that specifically highlights your experience with AG Grid, detailing its implementation, customization, and the challenges overcome in handling large datasets or complex interactions.

• Provide examples of responsive UI designs and how they were achieved.

• If applicable, include a project showcasing experience with Electron.js for desktop application development.

• Demonstrate experience with real-time data handling and visualization within a UI context. Process Documentation:

• Be prepared to discuss your approach to UI component reusability and maintainability.

• Explain your process for optimizing UI performance, particularly for data-heavy applications.

• Detail your workflow for collaborating with cross-functional teams (product, UX, backend) from requirement gathering to deployment.

• Describe your code review process and how you ensure code quality and adherence to best practices.

• Be ready to present case studies of how you've successfully translated complex business requirements into functional UI solutions within the banking domain.

📝 Enhancement Note: For this role, a portfolio heavily featuring AG Grid implementation, especially in a financial context, will be paramount. Candidates should be prepared to articulate the specific configurations, performance tuning strategies, and data handling techniques they employed. Demonstrating an understanding of server-side rendering for grids and managing large datasets will significantly strengthen their application.

💵 Compensation & Benefits

Salary Range:

• Estimated Range: $70 - $100 CAD per hour.

• Methodology: This estimate is based on industry benchmarks for experienced (5-10 years) Contract UI React Developers with specialized skills (AG Grid, TypeScript, Banking Domain, Real-time Systems) in Toronto, ON. The hourly rate reflects the contractor nature of the role and the demand for niche technical expertise in the financial sector. Rates can vary based on the specific duration of the contract, the candidate's exact experience, and negotiation.

Benefits:

• Contract Duration: 1 Year + Extension (Long term engagement potential).

• Flexibility: Hybrid work arrangement offering a blend of remote work and onsite collaboration.

• Project Exposure: Opportunity to work on critical projects within the banking industry, enhancing specialized skills.

• Professional Development: Potential for exposure to advanced financial technologies and messaging platforms.

Working Hours:

• Standard full-time hours are expected, typically around 40 hours per week.

• Flexibility may be offered, but core hours for team collaboration and meetings will be required.

📝 Enhancement Note: As a contractor role, standard employee benefits like health insurance, paid time off, and retirement plans are typically not included unless negotiated separately or provided by a third-party staffing agency. The primary compensation is the hourly rate. The "long term" contract duration suggests stability, but it's crucial for the candidate to clarify specific terms regarding extensions and potential conversion.

🎯 Team & Company Context

🏢 Company Culture

Industry: Financial Technology / Data Analytics (implied by "Jay Analytix" and banking domain requirement).

Company Size: Jay Analytix is likely a mid-sized consultancy or specialized tech firm, given the single listing on Breezy HR and the focused nature of the role. This size often allows for more direct impact and less bureaucracy.

Founded: Information not provided, but the company's focus on analytics and technology suggests a modern, forward-thinking approach.

Team Structure:

• The UI team likely consists of developers with specialized skills in front-end technologies like ReactJS and TypeScript.

• This role requires close collaboration with Product Managers, UX/UI Designers, and Backend Developers, indicating a cross-functional, agile team environment.

• The reporting structure will likely be to a Tech Lead or Engineering Manager, with direct interaction with project stakeholders. Methodology:

• Agile development methodologies (Scrum/Kanban) are highly probable, given the industry and the need for iterative development and collaboration.

• Emphasis on best practices in UI development, code quality, and performance optimization.

• Data-driven decision-making, leveraging analytics and user feedback to refine applications.

Company Website: https://jay-analytix.breezy.hr (Note: This is a careers portal, not the main company website. The actual company website would be jayanalytix.ca based on domain_derived).

📝 Enhancement Note: The company name "Jay Analytix" strongly suggests a focus on data analysis and insights. Combined with the banking domain requirement, this points towards a company that provides solutions for financial institutions, likely involving complex data visualization, reporting, and trading platforms. The "breezy.hr" URL indicates they use Breezy HR for recruitment, which is common for tech-focused companies.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned at a Mid-Senior to Senior level, requiring 5+ years of experience. The focus on specialized technologies like AG Grid and specific financial domain knowledge indicates a developer who can operate with significant autonomy and contribute to architectural decisions within their domain.

Reporting Structure: The UI Developer will likely report to a Lead UI Developer, Engineering Manager, or Project Manager. They will work closely with cross-functional teams, including Product Owners, UX/UI Designers, and Backend Engineers.

Operations Impact: The impact of this role is direct and critical. By building and enhancing high-performance UI applications, particularly those handling complex data and real-time updates for the banking sector, this developer will directly influence the usability, efficiency, and effectiveness of financial tools. This can translate to improved trading execution, better data analysis for financial professionals, and enhanced customer experiences.

Growth Opportunities:

• Technical Specialization: Deepen expertise in AG Grid, real-time data streaming, and financial protocols like FDC3, becoming a go-to expert in these areas.

• Cross-functional Skill Development: Gain exposure to backend technologies, cloud infrastructure, and full-stack development principles through collaboration.

• Domain Expertise: Further develop specialized knowledge within the banking and financial services industry, making them highly valuable for future roles in FinTech.

• Project Leadership: Potential to lead UI development for specific modules or smaller projects as experience and performance are demonstrated.

• Contract Extension/Conversion: Successful performance may lead to contract extensions or potentially opportunities for full-time employment if such roles become available within Jay Analytix.

📝 Enhancement Note: This is a contract role, so formal career progression paths might be less defined than in a full-time permanent position. Growth is primarily through skill acquisition, project impact, and the potential for contract extensions or future opportunities. The niche skills required make this a valuable stepping stone for further specialization in FinTech.

🌐 Work Environment

Office Type: Hybrid work arrangement. This means the developer will be expected to work remotely for a portion of the week and be present in the Toronto office for specific meetings, collaborative sessions, or project milestones.

Office Location(s): Toronto, ON, Canada. The specific office location within Toronto will be provided upon engagement.

Workspace Context:

• Collaborative Environment: Expect a dynamic and collaborative environment where close interaction with team members (both onsite and remote) is crucial for success.

• Technology Access: Access to necessary development tools, software, and potentially specialized financial data feeds will be provided.

• Team Interaction: Opportunities for direct engagement with product teams, designers, and backend developers, fostering a sense of shared ownership and problem-solving.

Work Schedule:

• A standard work week of approximately 40 hours is expected.

• While remote work is part of the hybrid model, core working hours will likely be established to ensure effective team synchronization and communication, especially for real-time collaboration needs.

📝 Enhancement Note: The hybrid nature requires strong self-discipline for remote work and excellent communication skills to remain connected with the team when not physically present. The "onsite when required" aspect suggests that flexibility and availability for in-person collaboration are key.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A brief call with a recruiter to assess general fit, experience level, and understanding of the role's core requirements.

• Technical Interview (Core Skills): In-depth discussion focusing on ReactJS, TypeScript, and especially AG Grid. Expect questions on component design, state management, performance optimization, and practical implementation scenarios.

• Technical Interview (Domain & Niche Skills): Evaluation of experience in the banking domain, real-time systems, and familiarity with Electron.js, AMPS, or FDC3. This may involve scenario-based questions or discussions of past projects.

• Portfolio Review: Presentation and discussion of relevant projects from your portfolio, with a focus on demonstrating your expertise in AG Grid, data handling, and responsiveness. Be prepared to walk through code snippets or architectural decisions.

• Hiring Manager/Team Lead Interview: Assessment of cultural fit, communication style, problem-solving approach, and overall suitability for the team and project.

Portfolio Review Tips:

• Highlight AG Grid: Dedicate specific slides or sections to your AG Grid implementations. Show examples of:

  • Data binding and rendering (large datasets).
  • Custom cell renderers and editors.
  • Filtering, sorting, and grouping configurations.
  • Performance tuning strategies (e.g., virtualization, lazy loading).
  • Integration with server-side data sources.

• Showcase Responsiveness: Present examples of how your UIs adapt across different screen sizes.

• Detail Banking Domain Experience: Use case studies to illustrate your understanding of financial workflows and how your UI solutions addressed specific business needs in banking.

• Quantify Impact: Whenever possible, use metrics to demonstrate the impact of your work (e.g., "improved data load times by X%", "reduced UI errors by Y%", "enabled real-time data display for Z users").

• Prepare for Code Walkthroughs: Be ready to discuss your code structure, design patterns, and reasoning behind technical choices.

Challenge Preparation:

• Coding Challenge: You might be given a small coding exercise focused on React, TypeScript, or AG Grid to assess your practical coding skills.

• System Design/Architecture: Be prepared to discuss how you would approach building a specific feature, particularly one involving complex data grids or real-time updates. Focus on scalability, performance, and maintainability.

• Problem-Solving Scenarios: Anticipate questions about how you would debug a complex UI issue or optimize a slow-performing component.

📝 Enhancement Note: The interview process will likely be rigorous, with a strong emphasis on practical, hands-on skills, particularly with AG Grid and in the financial domain. Candidates should prepare to demonstrate their ability to solve complex data visualization and real-time interaction problems.

🛠 Tools & Technology Stack

Primary Tools:

• ReactJS: The core framework for building user interfaces.

• TypeScript: Essential for modern, scalable JavaScript development.

• AG Grid: The primary component for data-intensive tables and grids. Expect to use its enterprise features.

• Electron.js (Preferred): For developing cross-platform desktop applications.

Analytics & Reporting:

• Browser Developer Tools: For debugging, performance profiling, and inspecting UI elements.

• Performance Monitoring Tools: Such as Lighthouse, WebPageTest, or integrated profiling within React DevTools.

• Logging Frameworks: To track application behavior and errors.

CRM & Automation:

• Version Control: Git (with platforms like GitHub, GitLab, or Bitbucket) is standard.

• Build Tools: Webpack, Vite, or similar for module bundling and build processes.

• Package Managers: npm or Yarn for dependency management.

• Collaboration Tools: Jira, Confluence, Slack, Microsoft Teams for project management and communication.

📝 Enhancement Note: Proficiency with AG Grid is a critical differentiator. Candidates should be ready to discuss advanced configurations, performance optimization techniques specific to AG Grid, and how they've integrated it with various data sources. Experience with real-time data protocols and potentially financial messaging platforms (like AMPS) would be highly advantageous.

👥 Team Culture & Values

Operations Values:

• Excellence in Execution: A commitment to delivering high-quality, performant, and reliable UI solutions.

• Collaboration & Communication: Openness to sharing ideas, providing constructive feedback, and working effectively across teams.

• Problem-Solving: A proactive and analytical approach to identifying and resolving technical challenges.

• Continuous Improvement: A drive to learn new technologies, refine processes, and stay ahead of industry trends.

• Client Focus: Dedication to understanding and meeting the needs of clients, especially within the demanding banking sector.

Collaboration Style:

• Agile and Iterative: Working in sprints, with regular stand-ups, reviews, and retrospectives.

• Cross-Functional Integration: Close partnership with product, design, and backend teams to ensure a cohesive product.

• Transparent Communication: Encouraging open dialogue about progress, blockers, and potential improvements.

• Knowledge Sharing: Fostering an environment where team members share best practices and technical insights.

📝 Enhancement Note: Given the contract nature and potential for hybrid work, a strong emphasis on proactive communication and the ability to work independently while staying connected to the team's goals will be highly valued. The company likely fosters a results-oriented culture where individuals are empowered to take ownership.

⚡ Challenges & Growth Opportunities

Challenges:

• Complex Data Visualization: Effectively managing and displaying large, dynamic datasets in real-time within a browser can be technically demanding.

• Hybrid Work Synchronization: Maintaining seamless collaboration and productivity across remote and onsite team members requires strong communication and coordination.

• Banking Domain Specifics: Understanding and implementing the nuanced requirements of the banking sector, including security, compliance, and specific financial workflows.

• Integration with Legacy/Specialized Systems: Potentially integrating with older banking systems or specialized messaging platforms (like AMPS) can present unique technical hurdles.

Learning & Development Opportunities:

• Niche Technology Mastery: Deepen expertise in AG Grid, real-time data streaming, and potentially FDC3 standards.

• FinTech Domain Expertise: Gain invaluable experience in the fast-paced and complex financial technology landscape.

• Cross-Disciplinary Exposure: Learn about backend architectures, data engineering, and system integration through close collaboration.

• Agile Best Practices: Refine skills in Agile methodologies and collaborative development workflows.

📝 Enhancement Note: This role offers a significant opportunity to become a specialist in a high-demand area of FinTech. The challenges are directly tied to developing sophisticated financial applications, which can be professionally rewarding and build a strong resume for future opportunities in the sector.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex UI challenge you faced involving large datasets and how you leveraged AG Grid or similar components to solve it. What were your key decisions regarding performance optimization?"

• "How do you approach building responsive UIs for applications that need to function across different devices and screen sizes, especially in a data-intensive banking context?"

• "Walk me through your process for collaborating with backend developers and product managers to translate complex business requirements into functional UI features. What steps do you take to ensure clarity and alignment?"

• "Given our focus on real-time systems, what strategies do you employ to ensure data consistency and smooth updates in the UI?"

• "If you were to develop a desktop application using React and Electron.js, what architectural considerations would you prioritize?" Company & Culture Questions:

• "What interests you about working with Jay Analytix, and what do you know about our work in the financial analytics space?"

• "How do you adapt to a hybrid work environment, and what are your strategies for effective remote collaboration?"

• "Describe a time you had to communicate a complex technical issue to a non-technical stakeholder. How did you ensure they understood?"

• "What are your thoughts on AG Grid's role in modern financial applications, and what do you see as its strengths and limitations?" Portfolio Presentation Strategy:

• Structure: Organize your presentation logically, perhaps by project type or technology. Start with a brief overview, then dive into specific examples, especially those highlighting AG Grid and banking domain experience.

• Focus on AG Grid: Dedicate significant time to showcasing your AG Grid implementations. Use screenshots, short video demos if possible, and detailed explanations of your configuration and optimization choices.

• Quantify Results: For each project, clearly articulate the business problem, your technical solution, and the measurable impact (e.g., performance improvements, efficiency gains, user satisfaction).

• Be Ready for Deep Dives: Anticipate questions about your code, architectural decisions, and the trade-offs you made. Be prepared to discuss alternative approaches.

• Tailor to the Role: Emphasize aspects of your portfolio that directly align with the job description's requirements, such as banking domain experience and real-time systems.

📝 Enhancement Note: Interviewers will be looking for candidates who not only possess strong technical skills but also demonstrate a deep understanding of the challenges specific to financial applications and the ability to work effectively in a hybrid, collaborative team. Your ability to articulate your AG Grid expertise and banking domain knowledge will be crucial.

📌 Application Steps

To apply for this UI React Developer position:

• Submit your application through the provided Breezy HR link: https://jay-analytix.breezy.hr/p/a0ee576bb25f-ui-react-developer-ag-grid

• Resume Optimization: Ensure your resume clearly highlights your 5+ years of ReactJS and TypeScript experience, with specific mentions of AG Grid, Electron.js, real-time systems, and any banking domain experience. Use keywords from the job description.

• Portfolio Preparation: Curate a portfolio that prominently features your AG Grid implementations, responsive design examples, and any relevant projects from the financial sector. Be ready to discuss these in detail.

• Technical Skill Refinement: Brush up on your ReactJS best practices, TypeScript features, and advanced AG Grid configurations. Review common patterns for real-time data handling and performance optimization in front-end applications.

• Company & Domain Research: Familiarize yourself with Jay Analytix and the financial technology sector. Understand common challenges and trends in banking UI development.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.