Principal UI UX Engineer

📍 Job Overview

Job Title: Principal UI UX Engineer

Company: VIDIZMO LLC

Location: Karachi, Sindh, Pakistan

Job Type: Permanent

Category: Frontend Engineering / UI/UX Design

Date Posted: 2026-07-24

Experience Level: 5-10 Years

Remote Status: On-site

🚀 Role Summary

• Lead the end-to-end development of intuitive, high-performance user interfaces for enterprise-class video streaming and processing applications.

• Drive the design and enhancement of user experiences across SaaS products and marketing websites, ensuring consistency across all customer touchpoints.

• Translate complex product, engineering, and marketing requirements into detailed wireframes, mockups, and interactive prototypes.

• Maintain and evolve a comprehensive shared design system to ensure visual and functional alignment between product development and web presence.

• Ensure all developed interfaces adhere to stringent accessibility standards (WCAG, Section 508) and support for multilingual and Right-to-Left (RTL) layouts.

📝 Enhancement Note: This role is a hybrid of a Principal UI/UX Engineer and a Senior Frontend Engineer, emphasizing hands-on coding and design ownership for both product interfaces and marketing websites. The "Principal" title suggests a senior level of expertise, strategic input, and potential mentorship within the team. The focus on "enterprise-class video streaming and processing applications" indicates a need for robust, scalable, and performant UI solutions in a complex technical environment.

📈 Primary Responsibilities

• Own and meticulously craft the user interface (UI) and user experience (UX) for both VIDIZMO's Software-as-a-Service (SaaS) products and its marketing website, ensuring a cohesive and exceptional experience across all user journeys.

• Translate abstract requirements from product management, engineering teams, and marketing stakeholders into tangible, user-centric wireframes, high-fidelity mockups, and interactive prototypes, utilizing leading design tools.

• Execute pixel-perfect implementation of user interfaces using expert hand-coded HTML5, CSS3, and Bootstrap with SCSS, seamlessly integrating these into React or Angular frontend frameworks.

• Develop, enhance, and maintain the company's marketing website, including landing pages, campaign-specific pages, and core brand representation, ensuring brand consistency and optimal user engagement.

• Architect, implement, and manage a centralized design system, fostering reusability, consistency, and efficiency in UI development across product and web teams.

• Guarantee that all digital interfaces meet or exceed accessibility standards such as WCAG and Section 508, and robustly support multilingual content and Right-to-Left (RTL) text directionality.

• Continuously optimize application and website performance, ensuring seamless responsiveness across all device screen sizes and resolutions.

• Leverage A/B testing methodologies and analytics data to iteratively improve user experience, applying AI-assisted tooling (e.g., Claude, ChatGPT) to accelerate development cycles and enhance efficiency.

📝 Enhancement Note: The responsibilities highlight a dual focus on product UI/UX and marketing website development, requiring a broad skill set. The emphasis on "hand-code pixel-perfect HTML5/CSS3 and ship it in React or Angular" strongly suggests a need for deep frontend development expertise beyond just framework usage. The responsibility to "maintain a shared design system" implies a role in establishing and governing design standards.

🎓 Skills & Qualifications

Education: Bachelor's degree in Computer Science, Software Engineering, or a closely related IT field.

Experience: Minimum of 5 years of progressive experience in designing and developing production-ready web interfaces, encompassing both application UI and website development.

Required Skills:

• Minimum 5 years of hands-on experience building and deploying production-grade web interfaces for enterprise applications and marketing websites.

• Advanced proficiency in hand-coded HTML5, CSS3, and Bootstrap, with a strong command of SCSS preprocessor for efficient styling (demonstrating expertise beyond reliance on component libraries).

• Proven hands-on experience developing with modern JavaScript frameworks, specifically React and/or Angular.

• Expertise in creating accessible (WCAG, Section 508 compliant), responsive, and cross-browser compatible code.

• Demonstrated experience with enterprise SaaS product UI/UX development, understanding the nuances of complex business applications.

• Strong visual design instincts and a keen eye for aesthetics and user-centered design principles.

• Fluency and practical experience with industry-standard design tools such as Figma, Adobe XD, Photoshop, or Illustrator.

• Familiarity and practical application of Agile and Scrum development methodologies.

• Commitment to writing clean, maintainable code that adheres to W3C standards. Preferred Skills:

• Extensive experience taking full ownership of website development, from marketing pages to CMS integration, in parallel with product UI development.

• Deep experience in designing and implementing comprehensive design systems, with a particular focus on complex RTL and bidirectional layout challenges.

• Demonstrated comfort and proficiency in leveraging AI-assisted workflows and tools to enhance productivity and creativity in design and development tasks.

📝 Enhancement Note: The requirement for "expert hand-coded HTML5/CSS3/Bootstrap with SCSS (not component-library reliance)" is a critical differentiator, signaling a need for foundational frontend skills rather than just framework proficiency. The "5+ years" aligns with a senior or principal-level role. The "nice to have" skills like "deep RTL/bidirectional layouts" and "comfort in an AI-assisted workflow" suggest areas where exceptional candidates can stand out.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• A comprehensive portfolio showcasing end-to-end UI/UX design and frontend development projects, with a strong emphasis on enterprise SaaS applications and marketing websites.

• Detailed case studies demonstrating the process of translating requirements into wireframes, mockups, prototypes, and final coded interfaces.

• Examples of design systems developed or contributed to, highlighting their structure, components, and impact on development efficiency and consistency.

• Evidence of creating accessible (WCAG, Section 508) and responsive designs, with specific examples of implementation challenges and solutions.

• Projects that demonstrate proficiency in multilingual and RTL layout support, showcasing the technical implementation and design considerations. Process Documentation:

• Documented examples of how you have used A/B testing and analytics to drive UX improvements, including methodologies and measured outcomes.

• Case studies illustrating the optimization of web performance and responsiveness across various devices and screen sizes.

• Examples of how AI-assisted tooling has been integrated into your workflow to accelerate design and development processes, with a focus on quality assurance and final deliverable accountability.

• Clear demonstrations of working within Agile/Scrum frameworks, including contributions to sprint planning, retrospectives, and iterative development cycles.

📝 Enhancement Note: For a Principal UI/UX Engineer role, a portfolio is paramount. It should not only showcase visual design but also the technical implementation and the strategic thinking behind design decisions. The emphasis on enterprise SaaS, accessibility, and AI-assisted workflows means the portfolio should actively highlight experience in these specific areas.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for a Principal UI/UX Engineer with 5-10 years of experience in Karachi, Pakistan, the estimated annual salary range is PKR 3,500,000 to PKR 6,000,000. This estimate considers the cost of living, demand for specialized tech talent in the region, and the seniority of the role.

Benefits:

• Health Insurance: Comprehensive coverage including Outpatient Department (OPD) and Inpatient Department (IPD) services.

• Maternity Cover: Dedicated support for new mothers.

• Leave Encashment: Opportunity to encash accrued leave days.

• Car Support Program: Assistance or benefits related to vehicle acquisition or usage.

• Referral Bonus: Incentives for successfully referring qualified candidates.

• EOBI: Contribution to the Employees' Old-Age Benefits Institution, a statutory social security program.

• Bi-Annual Increment: Potential for salary adjustments twice a year, reflecting performance and market adjustments.

• Provident Fund: Contributions towards a retirement savings plan.

• Career Growth: Opportunities for professional development and advancement within the company.

• Bonus: Performance-based or company-wide bonus structures.

Working Hours: Standard full-time working hours are estimated at 40 hours per week, typical for a permanent position. Flexibility may be available, but the role is on-site.

📝 Enhancement Note: The salary range provided is an estimate for Karachi, Pakistan, based on typical compensation for senior engineering and design roles. It accounts for the "Principal" level, which implies a higher compensation bracket than a standard senior role. The benefits are directly extracted from the provided text and are highly attractive for the region.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology, specifically focused on AI-Powered Video Streaming and Data Intelligence. VIDIZMO is a Microsoft Solutions Partner in Data & AI, Infrastructure, and Digital & App Innovation, indicating a strong alignment with Microsoft's ecosystem and advanced technology solutions.

Company Size: While not explicitly stated in the raw data, the mention of "Fortune 500 companies," "large enterprises," and "public sector" clients suggests a company that operates at a significant scale and handles complex enterprise-level projects. The presence of multiple international locations also points to a substantial organization.

Founded: VIDIZMO is a USA-based technology company headquartered in Tysons, Virginia. The founding date is not provided, but its status as a Microsoft Solutions Partner suggests a mature and established presence in the market.

Team Structure:

• The UI/UX team likely consists of skilled designers and frontend engineers who collaborate closely with product managers and backend engineers.

• This role reports into a lead or manager responsible for product development or engineering.

• Cross-functional collaboration is essential, involving close work with product management, engineering (both frontend and backend), marketing, and potentially sales teams to gather requirements and ensure alignment. Methodology:

• Data-driven design and development, utilizing analytics and A/B testing to inform UI/UX decisions and optimize performance.

• Agile/Scrum methodology for iterative development, focusing on rapid prototyping, feedback loops, and continuous improvement.

• Emphasis on building enterprise-class applications, requiring robust, scalable, and secure development practices.

• Integration of AI tools (LLMs, RAG) into the development workflow for enhanced efficiency, with a strong emphasis on human oversight and accountability for AI-generated outputs.

Company Website: https://vidizmo.ai

📝 Enhancement Note: The company positions itself as a leader in AI-powered multimodal data intelligence, leveraging advanced technologies like LLMs and RAG. This context is crucial for understanding the complexity and innovative nature of the applications the UI/UX engineer will be working on. The "Microsoft Solutions Partner" status suggests a commitment to high standards and integration with Microsoft technologies.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned at a "Principal" level, signifying a senior individual contributor with deep technical expertise and the ability to influence design and development strategy. It implies a level of autonomy, problem-solving capability, and potentially mentorship of more junior team members.

Reporting Structure: While not explicitly detailed, a Principal UI/UX Engineer typically reports to a Director or VP of Engineering/Product, or a Lead UI/UX Engineer. They will collaborate extensively with product managers, engineering leads, and cross-functional teams.

Operations Impact: The UI/UX Engineer's work directly impacts user adoption, customer satisfaction, and the overall perception of VIDIZMO's sophisticated AI platform. By creating intuitive and performant interfaces for both the SaaS product and marketing website, they contribute significantly to customer acquisition, retention, and brand reputation. Their ability to translate complex AI capabilities into user-friendly experiences is critical for the platform's success.

Growth Opportunities:

• Technical Specialization: Deepen expertise in advanced frontend technologies, design systems, accessibility standards, and AI-assisted development workflows.

• Leadership & Mentorship: Transition into a team lead or management role, guiding junior engineers and designers, and contributing to strategic technical roadmaps.

• Cross-functional Exposure: Gain broader experience by working on diverse projects across different product lines or contributing to marketing initiatives, enhancing understanding of the full product lifecycle.

• Industry Recognition: Contribute to high-impact projects within an innovative AI company, potentially leading to speaking engagements, publications, or contributions to open-source initiatives.

📝 Enhancement Note: The "Principal" title is key here, indicating a role that goes beyond execution to strategic contribution and potential leadership. Growth opportunities should reflect this senior standing, focusing on technical mastery, strategic influence, and potential leadership pathways.

🌐 Work Environment

Office Type: The role is described as "On-site" in Karachi, Pakistan. This suggests a traditional office environment where collaboration and in-person interaction are valued.

Office Location(s): Karachi, Sindh, Pakistan.

Workspace Context:

• Collaborative Environment: Expect a dynamic workspace designed for collaboration, where close interaction with product managers, fellow engineers, and designers is encouraged to foster innovation and efficient problem-solving.

• Tools & Technology: Access to industry-standard design and development tools (Figma, React, Angular, etc.) and potentially advanced AI tools to support workflow.

• Team Interaction: Opportunities for regular team meetings, design reviews, code reviews, and brainstorming sessions, contributing to a shared understanding and collective ownership of projects.

Work Schedule: A standard full-time work schedule is expected, likely aligning with typical business hours in Pakistan. While the role is on-site, the company's global presence might necessitate some flexibility for communication with international teams.

📝 Enhancement Note: As an on-site role, the description should emphasize the collaborative aspects of the physical workspace and how it facilitates the company's development methodologies (Agile, data-driven).

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your resume and portfolio to assess qualifications and experience against the job requirements.

• Technical Interview(s): Deep dives into your frontend development skills (HTML, CSS, JavaScript, React/Angular), UI/UX principles, accessibility standards, and experience with design tools. Expect coding challenges or live coding exercises.

• Portfolio Presentation: A dedicated session where you will present your portfolio, discussing your design process, technical implementation, problem-solving approaches, and the impact of your work. Be prepared to showcase specific projects relevant to enterprise SaaS, responsive design, and accessibility.

• Behavioral/Cultural Fit Interview: Assessment of your problem-solving abilities, collaboration style, communication skills, and alignment with VIDIZMO's values, particularly regarding AI output verification and ownership.

• Final Interview: Potentially with senior leadership to discuss strategic contributions and long-term fit.

Portfolio Review Tips:

• Curate Strategically: Select 3-5 of your strongest projects that best demonstrate expertise in enterprise SaaS UI/UX, hand-coded frontend development, design systems, accessibility, and multilingual/RTL support.

• Structure Your Narrative: For each project, clearly articulate the problem, your role and process, the solutions implemented (design and code), key challenges overcome, and the measurable impact or outcomes.

• Highlight Technical Prowess: Showcase your hand-coded HTML, CSS, and JavaScript skills. Demonstrate how you integrated these with React or Angular. Provide code snippets if appropriate and possible.

• Emphasize Process & Impact: Detail your use of wireframing, prototyping, user testing, A/B testing, and analytics. Quantify results wherever possible (e.g., improved conversion rates, reduced bounce rates, increased user satisfaction).

• Address AI Accountability: Be ready to discuss your approach to using AI tools, emphasizing your process for verifying accuracy, completeness, and compliance, and how you ensure accountability for the final deliverables.

Challenge Preparation:

• Frontend Coding Challenges: Practice complex HTML/CSS layouts, responsive design implementation, and JavaScript logic within React or Angular.

• Design Challenges: Be prepared for exercises that test your ability to quickly translate a set of requirements into a functional UI concept or a portion of a design system.

• Problem-Solving Scenarios: Think about how you would approach improving the UX of a complex enterprise application or optimizing a marketing funnel. Articulate your thought process clearly.

📝 Enhancement Note: The interview process for a Principal role will be rigorous. Emphasis should be placed on the portfolio presentation, as it's the primary vehicle for demonstrating both design and technical capabilities. The specific mention of "AI Output Verification & Accountability" means candidates must be prepared to discuss their ethical and practical approach to using AI in their work.

🛠 Tools & Technology Stack

Primary Tools:

• Frontend Frameworks: React, Angular (expert-level proficiency required for at least one).

• Core Web Technologies: HTML5, CSS3, Bootstrap, SCSS (expert-level hand-coding proficiency).

• Design Software: Figma, Adobe XD, Photoshop, Illustrator (fluency required).

• Version Control: Git (standard for collaborative development).

Analytics & Reporting:

• Analytics Platforms: Google Analytics or similar for tracking website and application usage.

• A/B Testing Tools: Optimizely, VWO, or built-in framework tools for experimentation.

• Performance Monitoring: Tools for measuring page load times, responsiveness, and overall site health.

CRM & Automation:

• While not directly a CRM role, understanding how UI/UX impacts lead generation and user onboarding within a CRM context (e.g., Salesforce, HubSpot) is beneficial for marketing website work.

• AI-Assisted Tooling: Claude, ChatGPT, Copilot, or similar AI tools for content generation, code assistance, and analysis.

📝 Enhancement Note: The technology stack is clearly defined by the job description. The emphasis on "expert hand-coded HTML5/CSS3/Bootstrap with SCSS (not component-library reliance)" and "React and/or Angular" is crucial. The inclusion of AI tools is a modern and important aspect of this role's tech stack.

👥 Team Culture & Values

Operations Values:

• User-Centricity: A strong commitment to understanding and serving user needs through intuitive and effective design.

• Excellence & Quality: Driving for pixel-perfect implementation, robust code, and high-performance applications that meet enterprise standards.

• Innovation: Embracing new technologies, including AI, to enhance product capabilities and development efficiency, while maintaining rigorous quality control.

• Collaboration: Fostering a team environment where open communication, knowledge sharing, and mutual support are paramount for achieving collective goals.

• Accountability: Taking ownership of all work, including AI-assisted outputs, ensuring accuracy, compliance, and alignment with business objectives.

Collaboration Style:

• Cross-functional Integration: Proactive engagement with product, engineering, and marketing teams to ensure seamless alignment of UI/UX efforts with business strategy and technical feasibility.

• Iterative Feedback: Embracing a culture of continuous feedback through design reviews, code reviews, and sprint retrospectives to refine solutions and improve processes.

• Knowledge Sharing: Encouraging the sharing of best practices, design patterns, and technical insights to elevate the team's overall capabilities and foster a learning environment.

📝 Enhancement Note: The company's emphasis on AI, enterprise solutions, and Microsoft partnership suggests a culture that values technical depth, strategic thinking, and a commitment to high-quality, compliant solutions. The specific mention of AI output verification highlights a value placed on integrity and responsibility.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing Product & Marketing UI: Effectively managing and maintaining design consistency and technical implementation across two distinct but related areas: complex enterprise SaaS products and a marketing website.

• Technical Complexity of AI Platform: Translating highly sophisticated AI functionalities (LLMs, RAG, multimodal analysis) into user-friendly and intuitive interfaces for diverse user segments.

• Ensuring Universal Accessibility & Support: Meeting stringent WCAG and Section 508 standards while also providing robust support for multilingual and RTL layouts across all developed interfaces.

• AI Integration Accountability: Navigating the ethical and practical challenges of using AI tools in development, ensuring human oversight, validation, and ultimate accountability for all deliverables.

Learning & Development Opportunities:

• Advanced Frontend & Design Techniques: Opportunities to master cutting-edge frontend frameworks, advanced CSS techniques, modern design systems, and sophisticated UX research methods.

• AI & Data Intelligence Domain Expertise: Deepen understanding of AI concepts, video streaming technologies, and multimodal data analysis, applying this knowledge to UI/UX challenges.

• Cross-Functional Leadership: Potential to contribute to strategic product roadmaps, mentor junior team members, and influence the direction of design and development processes.

• Industry Exposure: Working with Fortune 500 clients and a Microsoft Solutions Partner provides exposure to enterprise-level best practices and innovative technologies.

📝 Enhancement Note: The challenges are directly derived from the job description's requirements and company context. The growth opportunities are framed to leverage these challenges into learning experiences suitable for a Principal-level engineer.

💡 Interview Preparation

Strategy Questions:

• "Describe your process for translating complex AI capabilities into intuitive user interfaces for enterprise clients. How do you ensure technical feasibility and user adoption?" (Focus on your design process, user research, and iterative development).

• "How do you approach building and maintaining a shared design system? Provide an example of a system you've worked on and its impact on development efficiency." (Highlight your understanding of design system principles and practical implementation).

• "Discuss your experience with accessibility standards (WCAG, Section 508) and multilingual/RTL support. How do you integrate these requirements into your workflow from the outset?" (Emphasize proactive implementation and problem-solving).

• "Can you walk us through a project where you used AI tools to accelerate your development process? How did you ensure the quality, accuracy, and accountability of the AI-generated output?" (Crucial question addressing the AI Output Verification competency). Company & Culture Questions:

• "What interests you about VIDIZMO's AI-Powered Intelligence Hub and its multimodal capabilities?" (Show you've researched the company's core offerings and technology).

• "How do you approach collaborating with product managers and backend engineers to ensure alignment between UI/UX designs and technical implementation?" (Demonstrate your teamwork and communication skills).

• "Describe a time you had to advocate for a design decision that was met with resistance. How did you handle it?" (Assess your influence and problem-solving approach). Portfolio Presentation Strategy:

• Highlight Key Projects: Select projects that showcase your expertise in enterprise SaaS UI/UX, hand-coded frontend, design systems, accessibility, and AI-assisted workflows.

• Tell a Story: For each project, clearly articulate the problem, your role, the design and development process, the challenges faced, and the measurable outcomes or impact.

• Showcase Technical Depth: Be prepared to discuss your HTML, CSS, SCSS, Bootstrap, and React/Angular implementation details, especially for complex layouts or interactive components.

• Address AI Use Case: Be ready to discuss your specific use of AI tools within a project, detailing your verification process and how you maintained ownership of the final deliverable.

• Focus on Impact: Quantify achievements whenever possible – e.g., "improved conversion by X%", "reduced load time by Y seconds," "increased user engagement by Z%."

📝 Enhancement Note: Interview questions should probe the candidate's ability to handle complex technical challenges, their understanding of enterprise environments, and their approach to the critical AI output verification requirement. Portfolio presentation strategy should align with demonstrating these specific competencies.

📌 Application Steps

To apply for this Principal UI UX Engineer position:

• Submit your application through the provided link on the VIDIZMO careers portal.

• Customize Your Resume: Tailor your resume to highlight your 5+ years of experience in enterprise SaaS UI/UX and frontend development. Emphasize your proficiency in hand-coded HTML5/CSS3/SCSS, Bootstrap, React/Angular, and design tools like Figma. Explicitly mention experience with accessibility (WCAG, Section 508) and multilingual/RTL support.

• Curate Your Portfolio: Select 3-5 of your strongest projects that best showcase your skills in enterprise UI/UX, frontend implementation, design systems, and accessibility. Prepare detailed case studies for each, focusing on your process, technical execution, and measurable impact. Be ready to discuss your use of AI tools and your verification process.

• Prepare for Technical Assessments: Brush up on your core frontend technologies (HTML, CSS, JavaScript), React/Angular, and UI/UX design principles. Practice coding challenges and be ready to articulate your thought process clearly.

• Research VIDIZMO: Understand their AI-powered video streaming and data intelligence platform, their Microsoft partnership, and their target markets (Fortune 500, enterprise, public sector). This will help you tailor your responses and demonstrate genuine interest.

⚠️ 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.