Senior UI Engineer

📍 Job Overview

Job Title: Senior UI Engineer

Company: Atolio

Location: Vancouver, British Columbia, Canada

Job Type: Full-time

Category: Software Engineering / Frontend Development

Date Posted: 2026-09-17

Experience Level: Senior (5+ years)

Remote Status: Fully Remote

🚀 Role Summary

• Spearhead the design and development of sophisticated, responsive user interfaces for complex web applications, ensuring exceptional user experience across desktop and mobile platforms.

• Architect and implement scalable frontend solutions, including reusable component systems, to enhance development velocity and maintainability.

• Drive the integration of cutting-edge AI and agent-driven workflows into user-facing products, leveraging modern technologies.

• Collaborate extensively with product, design, and backend engineering teams to deliver end-to-end features and shape the future direction of the product.

• Champion best practices in frontend development, performance optimization, accessibility, and code quality within a fast-paced, innovative startup environment.

📝 Enhancement Note: While the title is "Senior UI Engineer," the core responsibilities and required experience indicate a strong emphasis on full-stack frontend development with architectural responsibilities, rather than purely UI design. The role requires a deep understanding of modern JavaScript frameworks and scalable architecture.

📈 Primary Responsibilities

• Design, develop, and implement high-quality, responsive user interfaces for complex web applications, ensuring seamless user experiences on desktop and mobile devices.

• Architect and build scalable, reusable frontend component systems and libraries to promote consistency and efficiency across the product.

• Collaborate closely with Product Managers, UX/UI Designers, and Backend Engineers to translate product requirements and design mockups into functional, high-performance features.

• Develop and integrate user experiences that effectively leverage AI and agent-driven workflows, enhancing product capabilities and user productivity.

• Utilize modern AI-assisted and agentic coding tools (e.g., GitHub Copilot, or similar) to accelerate development cycles and improve code quality.

• Actively participate in technical design discussions, architecture reviews, and sprint planning to contribute to strategic engineering decisions.

• Continuously optimize application performance, ensuring fast load times, smooth interactions, and a highly responsive user interface.

• Champion frontend best practices, contribute to code reviews, and mentor junior engineers on technical standards and methodologies.

• Play a key role in defining the technical roadmap for frontend development and influencing the future direction of Atolio's user experience.

📝 Enhancement Note: The original description highlights "AI-assisted development" and "agent-driven workflows." This suggests the role will involve not just building standard UIs but also incorporating advanced features that leverage AI, potentially for tasks like intelligent search, automated content generation, or personalized user journeys.

🎓 Skills & Qualifications

Education: Not explicitly stated, but a Bachelor's degree in Computer Science, Engineering, or a related field is typically expected for senior roles, or equivalent practical experience.

Experience: 5+ years of professional software engineering experience with a significant focus on frontend development.

Required Skills:

• Proven experience building modern web applications using a leading frontend framework such as React, Vue, or Angular.

• Strong proficiency in JavaScript and TypeScript, with a deep understanding of their nuances and best practices.

• Demonstrated experience in designing and implementing scalable, maintainable frontend architecture.

• Solid understanding of component-based development principles and effective state management patterns (e.g., Redux, Zustand, Vuex, Pinia).

• Experience collaborating effectively with product management, design teams, and backend engineers in an agile environment.

• Familiarity with modern AI-assisted development tools and workflows to enhance productivity.

• Experience with modern build tooling, specifically Vite, for efficient development and build processes.

• Proficiency in writing and maintaining end-to-end tests using frameworks like Playwright or Cypress to ensure application stability.

• Strong communication, interpersonal, and collaboration skills, with the ability to articulate technical concepts clearly.

• Ability to thrive and adapt in a fast-paced, dynamic startup environment. Preferred Skills:

• Experience with Svelte or a strong, demonstrated interest in learning and adopting it quickly.

• Familiarity with cloud platforms (AWS, GCP, Azure) and their integration with frontend applications.

• Experience with CI/CD pipelines for frontend deployments.

• Knowledge of Web Accessibility (WCAG) standards and best practices.

📝 Enhancement Note: The "5+ years" requirement combined with "Senior UI Engineer" and "scalable frontend architecture" implies a need for candidates who can not only code but also architect solutions, make technical decisions, and potentially lead frontend initiatives. The emphasis on "AI-assisted development" suggests a forward-thinking candidate who embraces new tools.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase of complex, responsive web applications demonstrating proficiency in modern JavaScript frameworks (React, Vue, Angular).

• Examples of architected frontend systems, including reusable component libraries and scalable state management implementations.

• Case studies detailing contributions to end-to-end feature development, highlighting collaboration with product and design.

• Demonstrations of integrating advanced features, such as AI-driven workflows or agentic capabilities, into user interfaces.

• Evidence of optimizing application performance, accessibility, and usability through concrete examples. Process Documentation:

• Descriptions of your approach to frontend architecture design, including considerations for scalability, maintainability, and performance.

• Examples of how you have implemented CI/CD pipelines or automated testing strategies (e.g., using Playwright/Cypress) to improve development workflows.

• Documentation or descriptions of your experience with build tools like Vite and their impact on development efficiency.

• Insights into your process for collaborating with cross-functional teams and incorporating feedback from product and design.

📝 Enhancement Note: For a Senior UI Engineer role, a portfolio is crucial. It should not just display finished products but also demonstrate architectural thinking, problem-solving skills, and an understanding of development processes. Emphasis on AI integration and performance optimization will be key differentiators.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for Senior UI Engineers with 5+ years of experience in Vancouver, BC, Canada, and considering the fully remote nature of the role, a competitive salary range is estimated between CAD $120,000 - $170,000 annually. This range can vary based on specific experience, skill set, and negotiation.

Benefits:

• Comprehensive benefits package (details typically include health, dental, vision insurance, and potentially retirement savings plans).

• Fully remote work environment, offering flexibility and work-life balance.

• Opportunity to work with cutting-edge AI and machine learning technologies.

• Equity/stock options in a well-funded startup.

• Professional development opportunities and support for continuous learning.

• Collaborative and innovative company culture.

Working Hours: Standard full-time hours are typically 40 hours per week. Given the remote nature and startup environment, there may be flexibility, but a commitment to project delivery and team collaboration is expected.

📝 Enhancement Note: Salary estimation is based on research of similar Senior UI Engineer roles in Vancouver, Canada, considering the tech industry's compensation trends and the specific requirements of a well-funded remote startup. Benefits are inferred from standard startup offerings and the explicit mention of "comprehensive benefits."

🎯 Team & Company Context

🏢 Company Culture

Industry: Enterprise Search, AI/ML, SaaS, Multi-Cloud Infrastructure (AWS, GCP, Azure). Atolio operates at the intersection of enterprise search and artificial intelligence, aiming to revolutionize how organizations access their knowledge. This domain requires a strong focus on data, performance, and user experience.

Company Size: Early Series Startup. This indicates a dynamic, fast-paced environment where individuals have a significant impact and can shape processes and culture. Roles often involve broad responsibilities and opportunities for rapid growth.

Founded: Founded by experienced leaders from Splunk and PagerDuty. This suggests a strong foundation in enterprise software, scalability, and a culture that values technical excellence and product innovation.

Team Structure:

• The engineering team is likely to be lean and highly collaborative, typical of an early-stage startup.

• Expect close-knit teams working on specific product areas or features.

• The Senior UI Engineer will likely report to an Engineering Lead or Head of Engineering, with direct collaboration across Product Management, Design, and Backend Engineering.

• Cross-functional collaboration is essential, with UI Engineers working hand-in-hand with other disciplines to deliver cohesive product experiences. Methodology:

• Data-Driven Development: Utilizing data and user feedback to inform design and development decisions.

• Agile & Iterative: Embracing rapid iteration cycles, continuous integration, and agile methodologies to deliver value quickly.

• AI-Powered Workflows: Integrating AI and machine learning into development processes and product features.

• Focus on Scalability and Performance: Building robust solutions that can handle complex enterprise data and large-scale operations.

Company Website: https://www.atolio.com/

📝 Enhancement Note: The company's background (Splunk, PagerDuty founders) and mission (instant organizational knowledge access via AI) suggest a culture that values technical depth, problem-solving, and a pragmatic approach to building scalable enterprise software.

📈 Career & Growth Analysis

Operations Career Level: This role is a Senior individual contributor position, focusing on technical expertise and architectural contributions within the frontend domain. It signifies a level where independent problem-solving, technical leadership, and mentorship are expected.

Reporting Structure: The Senior UI Engineer will likely report to an Engineering Manager or Director of Engineering. They will work closely with Product Managers and Designers, contributing significantly to product strategy from a technical perspective.

Operations Impact: The Senior UI Engineer will have a direct and significant impact on the usability, performance, and overall success of Atolio's AI-driven knowledge platform. Their work will shape how users interact with the product, influencing adoption, retention, and customer satisfaction. This role is critical in translating complex AI capabilities into intuitive user experiences.

Growth Opportunities:

• Technical Leadership: Opportunity to become a technical lead for frontend initiatives, mentor junior engineers, and drive architectural decisions.

• Skill Specialization: Deepen expertise in AI integration, advanced frontend frameworks (e.g., Svelte), and performance optimization techniques.

• Product Ownership: Gain significant influence over product direction and user experience strategy, potentially leading to product management or specialized engineering roles.

• Startup Growth: Grow with the company as it scales, potentially moving into management or principal engineering roles as the team expands.

📝 Enhancement Note: The Senior level indicates a path towards technical leadership or architectural specialization. The startup environment offers rapid exposure to various aspects of product development and company growth, accelerating learning and career progression.

🌐 Work Environment

Office Type: Fully Remote. This means the primary workspace will be a home office, offering maximum flexibility in terms of location within Canada.

Office Location(s): While the role is fully remote, the requirement for candidates to be based in Canada (specifically Vancouver, BC, for salary benchmarking) suggests adherence to local employment laws and potentially tax structures.

Workspace Context:

• Collaborative Digital Space: Expect heavy reliance on digital collaboration tools (Slack, Zoom, project management software) for communication and teamwork.

• Modern Tooling: Access to up-to-date development tools, AI-assisted coding environments, and cloud infrastructure.

• Independent Work: A high degree of autonomy and self-direction is expected, requiring strong time management and self-discipline.

• Team Interaction: Regular virtual stand-ups, team meetings, and one-on-one sessions to foster connection and alignment.

Work Schedule: While typically 40 hours per week, the remote and startup nature may offer some flexibility. However, consistent availability for team collaboration, meetings, and timely delivery of features is crucial. Adherence to core working hours for team synchronization will likely be necessary.

📝 Enhancement Note: The fully remote nature necessitates excellent asynchronous and synchronous communication skills, alongside strong self-management. The focus on "AI-assisted development" implies a modern, tech-forward workspace with advanced tools.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A brief call with a recruiter to assess basic qualifications, cultural fit, and interest.

• Technical Interview(s): Deep dive into frontend development skills, JavaScript/TypeScript proficiency, framework knowledge, and architectural thinking. This may involve coding challenges (live or take-home) or in-depth discussions about past projects.

• Portfolio Review: A dedicated session to walk through selected projects from your portfolio, discussing your role, technical decisions, challenges, and outcomes.

• System Design/Architecture Discussion: A session focusing on your ability to design scalable frontend architectures, solve complex problems, and integrate new technologies.

• Cross-functional Interview: Meeting with Product and Design stakeholders to assess collaboration skills and understanding of user experience principles.

• Final Round: Often with founders or senior leadership to discuss overall fit, vision, and strategic contributions.

Portfolio Review Tips:

• Curate Strategically: Select 3-5 of your strongest projects that best showcase your senior-level skills, architectural thinking, and experience with relevant technologies (React, TypeScript, Vite, AI integration).

• Focus on Impact: For each project, clearly articulate the problem you solved, your specific contributions, the technical challenges you overcame, and the measurable outcomes or impact. Use metrics where possible (e.g., performance improvements, user engagement uplift).

• Architectural Depth: Be prepared to discuss your architectural decisions, trade-offs considered, and how your solutions scale and maintainability.

• AI Integration Examples: If you have projects involving AI or agentic workflows, highlight them prominently. Explain the technical approach and user benefits.

• Storytelling: Frame your project descriptions as compelling narratives that highlight your problem-solving process and technical acumen.

Challenge Preparation:

• Coding Challenges: Practice common frontend coding problems, focusing on data structures, algorithms, and clean code implementation in JavaScript/TypeScript. Be ready for live coding sessions.

• System Design: Prepare to discuss how you would design a scalable frontend architecture for a complex application, considering factors like state management, API integrations, performance, and security.

• AI Integration Scenarios: Think about how AI could be integrated into a search or knowledge management UI to enhance user experience, and be ready to discuss potential implementations.

📝 Enhancement Note: The interview process for a senior role at a startup is typically rigorous, focusing on both technical depth and the ability to contribute strategically. A strong portfolio demonstrating architectural thinking and impact is paramount.

🛠 Tools & Technology Stack

Primary Tools:

• Frontend Frameworks: React, Vue, or Angular (strong experience required), with a preference for Svelte or interest in learning it.

• Languages: JavaScript, TypeScript (strong proficiency required).

• Build Tools: Vite (experience required).

• Testing Frameworks: Playwright, Cypress (experience required).

• Version Control: Git.

Analytics & Reporting:

• While not explicitly mentioned, expect to work with tools for performance monitoring and potentially A/B testing to inform UI/UX decisions. This could include browser developer tools, Lighthouse, or integrated analytics platforms. CRM & Automation:

• Not directly applicable to this frontend role, but understanding how the frontend interacts with backend APIs that might interface with CRMs or other enterprise systems is beneficial.

📝 Enhancement Note: The core technology stack is clearly defined: JavaScript/TypeScript, a major framework (React/Vue/Angular), Vite for build, and Playwright/Cypress for testing. Familiarity with AI-assisted development tools is also a key differentiator.

👥 Team Culture & Values

Operations Values:

• Innovation & Curiosity: A drive to explore and implement cutting-edge technologies, particularly in AI and frontend development.

• Collaboration & Transparency: Open communication, knowledge sharing, and a team-oriented approach to problem-solving.

• Customer Focus: Dedication to building intuitive, high-performance user experiences that solve real customer problems.

• Ownership & Accountability: Taking responsibility for features from conception to deployment and ongoing optimization.

• Bias for Action: A willingness to iterate quickly, learn from mistakes, and adapt in a fast-paced startup environment.

Collaboration Style:

• Cross-functional Partnership: The role emphasizes close collaboration with Product, Design, and Backend Engineering, requiring strong interpersonal skills and the ability to work effectively in a team.

• Feedback Loops: An open culture for giving and receiving constructive feedback, essential for continuous improvement in code quality and user experience.

• Knowledge Sharing: Encouragement of sharing best practices, learnings from new technologies, and insights gained from development challenges.

📝 Enhancement Note: Startup culture often values proactivity, adaptability, and a strong sense of ownership. The emphasis on AI and rapid iteration suggests a team that embraces continuous learning and experimentation.

⚡ Challenges & Growth Opportunities

Challenges:

• Integrating Complex AI: Translating sophisticated AI/ML capabilities into intuitive and user-friendly interfaces.

• Scalable Architecture: Building a frontend architecture that can support rapid feature growth and evolving product requirements.

• Pace of Innovation: Keeping pace with the rapidly evolving landscape of frontend technologies and AI tools.

• Startup Dynamics: Navigating the inherent uncertainties and rapid changes characteristic of an early-stage startup.

Learning & Development Opportunities:

• AI & ML Integration: Gaining hands-on experience integrating advanced AI features into user-facing applications.

• Frontend Architecture: Deepening expertise in designing and implementing robust, scalable frontend systems.

• Emerging Technologies: Opportunity to explore and adopt new frameworks like Svelte and advanced AI development tools.

• Mentorship: Potential to mentor junior engineers and lead frontend initiatives.

📝 Enhancement Note: The challenges are directly tied to the innovative nature of the company's mission and the startup environment. Growth opportunities are substantial, offering significant professional development in high-demand areas like AI and scalable architecture.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex UI you've architected. What were the key decisions, trade-offs, and how did you ensure scalability and maintainability?" (Focus on architectural thinking, scalability, and decision-making process.)

• "How would you approach integrating an AI agent into a search interface to provide proactive assistance? Walk us through the technical considerations and UI design challenges." (Assess understanding of AI integration, user experience for AI, and technical implementation.)

• "You've identified a performance bottleneck in a critical user workflow. What steps would you take to diagnose and resolve it, and how would you use tools like Vite and browser dev tools?" (Demonstrate problem-solving skills, performance optimization techniques, and tool proficiency.) Company & Culture Questions:

• "What interests you most about Atolio's mission to make organizational knowledge instantly accessible with AI?" (Show genuine interest and alignment with the company's vision.)

• "How do you stay updated with the latest frontend technologies and AI advancements, and how do you decide which ones to adopt?" (Highlight continuous learning and strategic adoption of new tools.)

• "Describe your experience working in a fast-paced startup environment. How do you prioritize tasks and manage your workload effectively?" (Assess adaptability and self-management skills.) Portfolio Presentation Strategy:

• Project Selection: Choose projects that best demonstrate your senior-level skills, architectural contributions, and experience with the required technologies (React/Vue/Angular, TypeScript, Vite, AI integration).

• Narrative Arc: For each project, tell a story: problem -> your solution -> technical details & challenges -> outcome/impact. Quantify results whenever possible.

• Technical Deep Dive: Be prepared to discuss architectural patterns, state management choices, performance optimizations, testing strategies, and any AI components integrated.

• Interactive Elements: If possible, be ready to briefly demo or show interactive elements of your work.

• Questions for the Interviewers: Prepare thoughtful questions about the team, the product roadmap, technical challenges, and company culture.

📝 Enhancement Note: Interview preparation should focus on demonstrating not just coding ability but also architectural vision, problem-solving skills, and a proactive approach to learning and collaboration, especially concerning AI integration.

📌 Application Steps

To apply for this Senior UI Engineer position:

• Submit your application through the provided link on Ashby.

• Tailor your Resume: Highlight your 5+ years of frontend development experience, specific framework expertise (React, Vue, Angular), TypeScript proficiency, experience with Vite, and any exposure to AI-assisted development tools. Quantify achievements wherever possible.

• Prepare Your Portfolio: Curate a selection of your strongest projects that showcase your ability to design and build complex, responsive web applications, architect frontend systems, and integrate advanced features. Be ready to discuss your process and impact.

• Practice Technical Explanations: Be prepared to discuss your approach to frontend architecture, state management, performance optimization, and testing strategies. Consider how you would integrate AI into user experiences.

• Research Atolio: Familiarize yourself with Atolio's mission, product, and the backgrounds of its founders to articulate your interest and cultural fit effectively.

⚠️ 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.