Designer UI (mandat en impartition)

📍 Job Overview

Job Title: Designer UI (mandat en impartition)

Company: Groupe LG2

Location: Montréal, QC, Canada

Job Type: FULL_TIME

Category: UI/UX Design, Digital Product Design

Date Posted: August 18, 2026

Experience Level: Mid-Level (2-5 years)

Remote Status: On-site

🚀 Role Summary

• This role is central to the digital unit of Groupe LG2, focusing on the creation and management of design systems for digital products.

• The Designer UI will be instrumental in developing user experiences that are both intuitive and aesthetically pleasing, ensuring a cohesive visual identity across all digital assets.

• A key aspect involves close collaboration with UX designers, development teams, and project stakeholders to ensure technical feasibility and alignment with project objectives.

• The position requires a strong ability to document design specifications, provide visual quality assurance, and stay abreast of emerging UI design trends and technologies.

📝 Enhancement Note: The job title "mandat en impartition" and the description "Il s’agit d’un mandat en impartition chez un client. Bienvenue aux pigistes!" clearly indicate this is a contract/freelance position for a client of Groupe LG2, likely for a duration of 6 months as stated. This is crucial for candidates to understand the nature of the employment.

📈 Primary Responsibilities

• Design System Ownership: Develop, maintain, and meticulously document the design system to ensure visual and functional consistency across all digital product elements.

• Digital Product Visual Design: Collaborate with UX designers, the design system team, and other stakeholders to craft harmonious, engaging, and visually appealing digital interfaces.

• Developer Partnership: Ensure the technical feasibility of proposed designs and guide the overall project vision to meet both functional and aesthetic objectives, acting as a bridge between design and development.

• Process Improvement: Utilize appropriate tools and software to enhance the efficiency of inter-team interactions and streamline project management for ongoing initiatives.

• Trend & Practice Vigilance: Proactively research and integrate the latest UI design trends and innovations to bring fresh, relevant ideas to projects.

• Animation & Interaction Design: Work with the creative team to develop fluid and engaging animations and interactions that significantly enhance the user experience.

• Visual Quality Assurance: Rigorously test and verify all visual aspects of digital products, ensuring impeccable quality before deployment.

📝 Enhancement Note: The responsibilities emphasize a proactive and ownership-driven approach to design systems and visual quality assurance, aligning with mid-level expectations for a UI Designer role. The mention of "mise à jour les processus de coopération" suggests an involvement in improving team workflows beyond just design execution.

🎓 Skills & Qualifications

Education: While no specific educational degree is mandated, a strong portfolio demonstrating proficiency in UI design principles and practical application is essential. Candidates with backgrounds in Graphic Design, Digital Design, Human-Computer Interaction, or related fields are typically well-suited.

Experience: A minimum of 2-5 years of experience in UI Design, with a significant focus on creating and managing design systems for digital products. Experience in an agency setting or with client-facing projects is highly beneficial.

Required Skills:

• UI Design: Expertise in creating intuitive and visually compelling user interfaces for web and mobile applications.

• Design Systems: Proven ability to develop, document, and maintain comprehensive design systems.

• User Experience (UX) Principles: Solid understanding of UX best practices to create user-centric designs.

• Visual Design: Strong command of typography, layout design, color theory, and visual hierarchy.

• Prototyping Tools: Proficiency with industry-standard design and prototyping software (e.g., Figma, Sketch, Adobe XD).

• Collaboration: Excellent interpersonal and communication skills, with demonstrated ability to work effectively with cross-functional teams (UX designers, developers, project managers).

• Technical Feasibility Awareness: Ability to understand technical constraints and collaborate with developers to ensure designs are implementable.

• Quality Assurance: Meticulous attention to detail for visual quality assurance and bug identification.

• Documentation: Skill in clearly documenting design specifications, components, and system guidelines.

Preferred Skills:

• Animation & Interaction Design: Experience designing micro-interactions and animations to enhance user engagement.

• Digital Product Design: Experience across the full product development lifecycle, from concept to launch.

• Agile Methodologies: Familiarity with Agile development processes and workflows.

• Client Management: Experience in managing client expectations and delivering high-quality design solutions in a contract or freelance capacity.

📝 Enhancement Note: The "Qualités recherchées" section in the original description provides rich qualitative attributes. These have been translated into specific skills and framed within the context of a mid-level UI Designer role, emphasizing collaboration, project management under pressure, and a holistic view of design. The AI-derived experience level of 2-5 years aligns well with these requirements.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Design System Showcase: Include a dedicated section demonstrating your experience with design systems, showcasing components, style guides, and documentation.

• Digital Product Case Studies: Present 2-3 detailed case studies of digital products you've designed, highlighting your UI/UX process, problem-solving approach, and final visual outcomes.

• Visual Cohesion Examples: Provide examples that illustrate your ability to maintain visual consistency across different screens or applications.

• Interaction & Animation Examples: If applicable, showcase any interactive prototypes or animated elements that demonstrate your skill in enhancing user experience.

Process Documentation:

• Workflow Design: Detail your process for translating user needs and business requirements into wireframes, mockups, and high-fidelity prototypes.

• System Implementation: Explain how you would approach the implementation and ongoing maintenance of a design system.

• Collaboration & QA: Illustrate your methods for collaborating with developers and conducting visual quality assurance checks.

📝 Enhancement Note: Given the emphasis on design systems and collaboration with developers, a portfolio demonstrating these specific aspects is critical. The original description's focus on "Responsable du système de design" and "Travailler en partenariat avec les développeurs" necessitates a portfolio that clearly articulates the candidate's process and contributions in these areas.

💵 Compensation & Benefits

Salary Range: For a full-time, 6-month contract UI Designer position in Montréal, QC, with 2-5 years of experience, the estimated salary range would typically be between CAD $65,000 - $90,000 annually, or approximately CAD $35 - $50 per hour. This estimate is based on industry benchmarks for contract design roles in major Canadian cities, considering the specialized nature of design systems and UI expertise.

Benefits: As this is a contract/impartition role, traditional employee benefits may not apply. However, potential benefits could include:

• Flexible Work Arrangement: While on-site is specified, there might be some flexibility for hybrid work or occasional remote days, depending on client needs.

• Project Variety: Exposure to diverse projects and clients within Groupe LG2's portfolio.

• Professional Development: Opportunities to hone skills in design systems, UI design, and client collaboration.

• Networking Opportunities: Building connections within a reputable digital agency and its client base.

• Competitive Contract Rate: Compensation reflective of specialized skills and contract duration.

Working Hours: The role is full-time, implying approximately 40 hours per week. The specific daily schedule will likely be aligned with standard business hours in Montréal, with potential for some flexibility as negotiated with the client.

📝 Enhancement Note: Salary estimates for contract roles are typically presented annually or hourly. Research for Montréal indicates a strong demand for skilled UI designers, especially those with design system experience. The hourly rate provides a practical perspective for freelance candidates. Benefits are framed to reflect the nature of a contract position.

🎯 Team & Company Context

🏢 Company Culture

Industry: Groupe LG2 operates within the Advertising, Marketing & Digital Services industry. REF, the digital business unit, specifically focuses on digital product design and development. This context implies a fast-paced, creative, and client-centric environment.

Company Size: Groupe LG2 is a significant player in the Canadian market, indicating a mid-to-large-sized agency with multiple specialized teams and departments. This offers opportunities for cross-functional collaboration and exposure to varied project scopes.

Founded: Groupe LG2 was founded in 1997, suggesting a well-established agency with a proven track record and a mature operational framework.

Team Structure:

• Digital Unit (REF): The role sits within REF, a specialized digital arm. This team likely comprises UX designers, UI designers, developers, project managers, and strategists.

• Cross-Functional Collaboration: The Designer UI will work closely with UX Designers, Development teams, Project Managers, and potentially Account Managers or Client Leads.

• Reporting: The Designer UI will likely report to a Design Lead, Creative Director, or a Project Manager within the REF unit, with direct client interaction also expected.

Methodology:

• Agile & Iterative Design: Expect a methodology that embraces iterative design, user feedback, and close collaboration with development teams.

• Design System-Centric: A strong emphasis on building and leveraging design systems for efficiency and consistency.

• Data-Informed Decisions: While the role is primarily design-focused, there's an expectation to understand user data and business objectives to inform design choices.

Company Website: LG2 Company Website

📝 Enhancement Note: Information about Groupe LG2's industry and founding date was inferred from general knowledge of prominent Canadian agencies. The focus on "REF, unité d’affaires numérique" suggests a specific team structure within the larger agency. The methodology is inferred from typical agency practices for digital product design.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned at a Mid-Level (2-5 years of experience). It requires a solid foundation in UI design principles and practical experience in design systems, moving beyond junior execution to take ownership of specific design system aspects and collaborate strategically with development.

Reporting Structure: The Designer UI will report to a senior member of the REF digital unit, such as a Design Lead, Art Director, or Project Manager. They will also work closely with developers and UX designers.

Operations Impact: The Designer UI's impact is crucial for defining the user interface and overall aesthetic of digital products. Their work directly influences user engagement, satisfaction, and the successful implementation of digital strategies, ensuring brand consistency and technical viability.

Growth Opportunities:

• Design System Expertise: Deepen expertise in design system architecture, governance, and evolution, potentially leading to a specialized Design System Lead role.

• Cross-Functional Leadership: Develop stronger collaboration and communication skills, leading to opportunities in managing design aspects of larger projects or mentoring junior designers.

• Client-Facing Experience: Enhance client management and presentation skills, valuable for advancing in agency environments or client-side product teams.

• Specialization: Explore further specialization in areas like interaction design, animation, or UX research.

📝 Enhancement Note: The "mandat en impartition" nature of the role suggests growth within the context of project completion and potential for future contract extensions or new client engagements facilitated by Groupe LG2, rather than a traditional internal promotion path.

🌐 Work Environment

Office Type: The role is specified as "On-site," implying a physical office environment. Given Groupe LG2's reputation as a leading agency, the office is likely a modern, collaborative, and creative workspace.

Office Location(s): The primary location is Montréal, QC, at 100-4051 Molson, H1Y 3L1. This is a specific address within Montréal, likely in an accessible area.

Workspace Context:

• Collaborative Hub: Expect an environment designed for collaboration, with shared workspaces, meeting rooms, and common areas fostering interaction between design, development, and strategy teams.

• Tooling: Access to industry-standard design software and hardware will be provided or expected as part of the role. The emphasis on process and systems suggests robust digital tools will be readily available.

• Team Interaction: Frequent opportunities for brainstorming sessions, design reviews, and knowledge sharing with peers and senior team members.

Work Schedule: A standard full-time work schedule of approximately 40 hours per week is expected. The specific daily hours may offer some flexibility, but adherence to project deadlines and client meeting requirements will be paramount.

📝 Enhancement Note: The "On-site" requirement is a key differentiator. The description of the workspace is based on typical agency environments, focusing on collaboration and access to necessary tools for a design role.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your resume and portfolio to assess your experience and suitability for the role.

• Portfolio Presentation & Discussion: A session where you present your portfolio, focusing on relevant case studies and your approach to UI design, design systems, and collaboration. Expect questions about your process, decision-making, and problem-solving skills.

• Technical/Skills Assessment: Potentially a design challenge or a discussion about specific UI/UX concepts, design system implementation, or technical feasibility.

• Team/Client Fit Interview: An opportunity to meet with key team members and potentially client representatives to assess cultural fit and communication style.

Portfolio Review Tips:

• Curate for Relevance: Prioritize projects that showcase your UI design skills, design system contributions, and collaborative work with developers.

• Highlight Design Systems: Dedicate specific examples or a section to your work on design systems, detailing your role, the challenges, and the outcomes.

• Showcase Process: Clearly articulate your design process for each project, emphasizing problem identification, ideation, iteration, and problem-solving.

• Quantify Impact: Where possible, use metrics or qualitative feedback to demonstrate the positive impact of your designs on user experience or business goals.

• Prepare for Questions: Be ready to discuss your design choices, trade-offs made, and how you handle feedback and constructive criticism.

Challenge Preparation:

• Design System Thinking: Be prepared for exercises that test your understanding of component-based design, scalability, and documentation standards for design systems.

• Problem-Solving Scenarios: Anticipate scenarios where you'll need to address UI challenges, improve user flows, or integrate new features within an existing design framework.

• Technical Communication: Practice explaining technical feasibility and collaborating with hypothetical developers on design implementation.

📝 Enhancement Note: The emphasis on "mandat en impartition" and client work means the interview process will likely focus heavily on practical application, client-readiness, and the ability to integrate quickly into an existing project structure. Portfolio strength is paramount.

🛠 Tools & Technology Stack

Primary Tools:

• Design & Prototyping: Figma (highly probable, given industry trends and collaboration needs), Sketch, Adobe XD.

• Design System Management: Tools integrated with design software or dedicated platforms for component libraries and documentation.

• Collaboration & Project Management: Jira, Asana, Trello, Slack, Microsoft Teams.

Analytics & Reporting:

• While not a primary responsibility, familiarity with analytics tools like Google Analytics or Amplitude is beneficial for understanding user behavior and informing design decisions. CRM & Automation:

• Not directly relevant to this UI design role, but understanding how design integrates with broader CRM and marketing automation platforms can be an advantage.

📝 Enhancement Note: The specific tools are inferred based on industry standards for UI/UX design and design system management. Figma is a dominant tool in this space, and its collaborative features are highly valued in agency environments.

👥 Team Culture & Values

Operations Values:

• Collaboration: A strong emphasis on teamwork, open communication, and collective problem-solving across disciplines.

• Excellence & Quality: A commitment to delivering high-quality, polished design work that meets both client expectations and user needs.

• Innovation: A drive to explore new ideas, trends, and technologies to create cutting-edge digital experiences.

• User-Centricity: A core value of designing with the end-user's needs and experience at the forefront.

• Agility & Adaptability: The capacity to respond effectively to evolving project requirements and client feedback.

Collaboration Style:

• Integrated Teams: Expect a highly integrated approach where designers, developers, and strategists work in close proximity and communicate frequently.

• Constructive Feedback: A culture that encourages open feedback and iterative improvements based on peer and stakeholder input.

• Knowledge Sharing: Practices that promote the sharing of best practices, new techniques, and project learnings across the team.

📝 Enhancement Note: These values and collaboration styles are inferred from the typical culture of creative agencies and digital product development teams, aligning with the description's emphasis on teamwork and innovation.

⚡ Challenges & Growth Opportunities

Challenges:

• Client Demands & Tight Deadlines: Managing client expectations and delivering high-quality work within short, contract-based timelines.

• Design System Governance: Ensuring consistent adoption and maintenance of the design system across multiple projects and potentially different teams.

• Technical Constraints: Navigating the balance between ideal design solutions and technical feasibility, requiring strong collaboration with developers.

• Adapting to New Environments: Quickly integrating into a client's specific project context and team dynamics for a temporary mandate.

Learning & Development Opportunities:

• Advanced Design System Skills: Deepen expertise in creating scalable, maintainable, and accessible design systems.

• Cross-Disciplinary Exposure: Gain insights into UX strategy, front-end development, and project management through close collaboration.

• Client Project Variety: Build a diverse portfolio and gain experience working with different types of digital products and industries.

• Agency Best Practices: Learn from established processes and experienced professionals within a reputable digital agency.

📝 Enhancement Note: The challenges are specifically tailored to the "mandat en impartition" nature of the role, highlighting the pressures and unique demands of contract work within an agency setting.

💡 Interview Preparation

Strategy Questions:

• "Describe your process for developing or contributing to a design system. What are the key components, and how do you ensure its adoption?"

• "How do you balance user needs with technical constraints and business objectives when designing an interface?"

• "Walk us through a complex UI design challenge you faced and how you overcame it, including your collaboration with developers." Company & Culture Questions:

• "What interests you about working on a contract basis for Groupe LG2's clients?"

• "How do you approach collaborating with different teams (UX, Dev, PM) in a fast-paced agency environment?"

• "How do you ensure the quality and consistency of your design work, especially under tight deadlines?" Portfolio Presentation Strategy:

• Structure Your Presentation: Begin with an overview of your experience, then dive into 2-3 key case studies. For each case study, clearly outline the problem, your role, your process, the solutions, and the outcomes.

• Emphasize Design Systems: Dedicate a segment to your design system work, explaining its purpose, your contributions, and its impact.

• Focus on Collaboration: Be prepared to discuss how you worked with developers and other stakeholders, highlighting communication strategies and problem-solving approaches.

• Be Concise and Engaging: Tell a story with your work, highlighting your passion for design and your ability to deliver impactful user experiences.

📝 Enhancement Note: These questions and strategies are crafted to probe the candidate's practical skills, problem-solving abilities, and fit for a contract role within a dynamic agency. The emphasis is on demonstrating tangible contributions and collaborative readiness.

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📌 Application Steps

To apply for this operations position:

• Submit your application through the provided link on the Groupe LG2 careers portal.

• Tailor Your Resume: Highlight experience with UI design, design systems, and collaborative projects. Use keywords from the job description such as "design system," "UI," "UX," "digital products," and "collaboration." Quantify achievements where possible.

• Prepare Your Portfolio: Ensure your portfolio is up-to-date, easily accessible, and prominently features relevant UI design projects and any experience with design systems or component libraries. Be ready to present your work clearly and concisely.

• Practice Your Pitch: Prepare a brief introduction about your relevant experience and why you are a good fit for this contract role. Practice articulating your design process and how you collaborate with development teams.

• Research Groupe LG2: Familiarize yourself with Groupe LG2's work, particularly their digital projects, to understand their style and client focus. This will help you tailor your application and interview responses.

⚠️ 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.