UX/UI Designer

📍 Job Overview

Job Title: UX/UI Designer

Company: BMLL Technologies

Location: London, England, United Kingdom

Job Type: Full-time

Category: Product Design & User Experience (UX/UI)

Date Posted: August 3, 2026

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

Remote Status: Hybrid (2 days in office, option to work remotely abroad up to 40 days/year)

🚀 Role Summary

• Spearhead the evolution and consistent application of the company's design system and UX standards across a suite of critical financial data products, including Data Lab, Data Feed, and Vantage.

• Drive the user experience strategy for complex, data-intensive financial applications, ensuring a high-quality, intuitive, and brand-aligned look and feel.

• Collaborate closely with cross-functional teams, including product management, engineering, and marketing, to translate complex financial concepts and brand principles into user-centered design solutions.

• Conduct in-depth user research and usability testing to gather actionable insights that inform design decisions and product enhancements for a sophisticated B2B SaaS client base.

📝 Enhancement Note: This role is pivotal for a growing FinTech company that provides granular financial data and analytics. The emphasis on owning and evolving the design system across multiple products, coupled with the need for an interest in finance and experience with data-heavy applications, positions this as a strategic design leadership opportunity within the product development lifecycle. The hybrid model with significant remote flexibility is a key differentiator.

📈 Primary Responsibilities

• Own and meticulously evolve the BMLL design system, UX guidelines, and information architecture to ensure consistent, high-quality user experiences across Data Lab, Data Feed, Vantage, and associated administrative tools.

• Partner effectively with product and engineering teams to conceptualize, design, and deliver intuitive, user-friendly features and UI enhancements that meet complex user needs.

• Collaborate closely with the marketing team to translate established brand principles into cohesive and impactful product experiences across the entire software estate.

• Proactively conduct comprehensive user research, including interviews and usability testing, to gather critical insights that will directly inform and validate design decisions.

• Develop detailed wireframes, user flows, and high-fidelity prototypes to effectively communicate design concepts and interactions to stakeholders.

• Contribute significantly to product requirements definition, establishing and promoting UX standards and best practices throughout the organization.

• Champion the user's perspective in cross-functional discussions, advocating for design solutions that balance user needs with technical and business constraints.

📝 Enhancement Note: The responsibilities highlight a hands-on approach to design ownership, emphasizing the evolution of a design system and direct collaboration with technical teams. The inclusion of user research and the translation of brand principles into product experiences points to a role that is both strategic and execution-focused, requiring a deep understanding of the B2B SaaS product lifecycle within the financial services sector.

🎓 Skills & Qualifications

Education: While no specific degree is mandated, a strong portfolio demonstrating equivalent knowledge and practical experience in UX/UI design is paramount.

Experience: A minimum of 3 years of dedicated experience in product design or UX/UI design, with a strong preference for candidates with prior experience in a B2B SaaS environment.

Required Skills:

• Proven experience in owning or significantly contributing to a corporate design system, including defining and maintaining UX guidelines and information architecture.

• Advanced proficiency in Figma for wireframing, prototyping, and high-fidelity design.

• Demonstrated ability to work autonomously and manage multiple design projects or workstreams concurrently.

• Excellent communication and presentation skills, with the capability to clearly articulate design rationale and decisions to both technical and non-technical audiences.

• Aptitude for managing competing priorities and navigating complex stakeholder landscapes across multiple teams.

• A pragmatic and delivery-focused mindset, adept at balancing ideal design solutions with practical, real-world constraints.

• Strong collaborative spirit and the confidence to advocate for user needs in cross-functional settings.

• Proven ability to thrive and deliver in a fast-paced, deadline-driven work environment. Preferred Skills:

• Prior exposure to or a keen interest in financial services markets, including concepts like equities, options, and futures.

• Basic understanding of web development technologies such as HTML and CSS, enabling better collaboration with engineering.

• Experience working within an Agile software development methodology.

• Familiarity with charting libraries or data visualization tools, with an understanding of how design choices impact chart readability and performance.

• Experience with Figma plugins like Make or Claude Design, or similar advanced design tools.

• Experience designing for an international user base, considering diverse cultural and linguistic needs.

📝 Enhancement Note: The requirements emphasize practical, hands-on design skills, particularly with Figma, and the ability to manage complex design systems. The preference for financial services experience and an understanding of data visualization is crucial given BMLL's domain. The ability to work autonomously and manage competing priorities is a key indicator of the role's seniority and expected impact.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• A curated portfolio showcasing a minimum of 3 years of professional UX/UI design work, with a strong emphasis on B2B SaaS products.

• Detailed case studies demonstrating ownership and evolution of design systems, including examples of UX guidelines, information architecture, and consistency across products.

• Examples of user research methodologies employed, usability testing reports, and how insights directly influenced design iterations and product improvements.

• Prototypes and wireframes that effectively communicate complex user flows and interface interactions, ideally for data-intensive applications.

• Demonstrations of how brand principles were translated into consistent and effective product experiences. Process Documentation:

• Evidence of contribution to or definition of UX standards and best practices within a previous organization.

• Examples of collaboration with engineering and product teams on feature development and UI enhancements.

• Documentation or presentation materials that articulate design decisions and rationale to diverse stakeholder groups.

📝 Enhancement Note: For a role focused on design systems and cross-product consistency, the portfolio must clearly demonstrate the candidate's ability to manage and evolve a comprehensive design framework. Case studies should highlight not just the visual design, but the strategic thinking behind it, including user research, problem-solving for complex data, and cross-functional collaboration.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for a Mid-Level UX/UI Designer in London with 3+ years of experience in a FinTech/SaaS environment, the estimated salary range is £55,000 - £75,000 per annum. This figure accounts for the specific requirements, the company's industry, and the cost of living in London.

Benefits:

• Competitive salary package.

• Generous annual leave: 25 days of holiday plus bank holidays.

• Discretionary Bonus scheme, rewarding performance.

• Pension Scheme to support long-term financial planning.

• Comprehensive Private Medical Insurance for health and well-being.

• Unique opportunity to work remotely abroad for up to 40 business days per year.

• Life Insurance coverage for peace of mind.

• Childcare Nursery Scheme to support working parents.

• A yearly Well-being Physical Activity budget to encourage healthy lifestyles.

• Continuous learning and development through funded training programs and challenging projects.

• Collaborative and inclusive company culture.

• Weekly team lunches to foster team cohesion.

• Provision of free fruit, snacks, and drinks when in the London office.

• Regular team social events to build camaraderie.

• Cycle to Work Scheme to promote sustainable commuting.

Working Hours: The standard working week is approximately 40 hours. The role offers a hybrid arrangement, requiring 2 days per week in the London office, with flexibility for remote work both domestically and internationally.

📝 Enhancement Note: The salary estimate is based on current market data for UX/UI Designers in London, considering the specialized FinTech industry and the required experience level. The benefits package is extensive, highlighting a strong commitment to employee well-being, professional development, and work-life balance, with the remote abroad option being a particularly attractive perk.

🎯 Team & Company Context

🏢 Company Culture

Industry: Financial Technology (FinTech), specifically providing historical market data and analytics for global equities, ETFs, futures, and US equity options. BMLL operates in a data-intensive, high-stakes environment where accuracy, speed, and reliability are paramount.

Company Size: BMLL is a growing company, indicated by its acquisition in 2025 and stated commitment to accelerating growth. While an exact headcount isn't provided, it operates with multiple product lines and serves major financial institutions, suggesting a medium-to-large size with specialized teams.

Founded: BMLL was acquired in 2025, implying it has a history prior to this acquisition, likely establishing its market position and product offerings. This acquisition by Nordic Capital and Optiver signals significant investment and a focus on expansion.

Team Structure:

• The UX/UI Designer will be a central figure, working across multiple product teams (Data Lab, Data Feed, Vantage, Admin tools).

• Collaboration is expected with Product Managers, Engineers, and Marketing teams.

• The role implies a degree of autonomy, suggesting a flat or matrixed organizational structure where design leadership is valued. Methodology:

• Data-Driven Design: Emphasis on user research and usability testing to inform design decisions, aligning with the data-centric nature of BMLL's business.

• Systematic Approach: Ownership of a design system and UX guidelines indicates a commitment to consistency, scalability, and efficiency in design processes.

• Collaborative Development: Working closely with engineering and product teams suggests an Agile or Lean development environment.

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

📝 Enhancement Note: BMLL operates at the intersection of finance and technology, requiring a culture that values precision, innovation, and deep domain understanding. The recent acquisition signifies a period of investment and potential rapid growth, meaning the design function will be crucial in shaping the user experience of evolving products for sophisticated financial clients.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a Mid-Level UX/UI Designer with significant ownership and influence. It's a central design role, not siloed within a single product, offering broad exposure to BMLL's software estate. The expectation to "own and evolve" the design system suggests potential for growth into a Senior or Lead UX/UI Designer position.

Reporting Structure: While not explicitly stated, the role's central nature and collaboration with multiple teams suggest it might report into a Head of Product, Head of Design, or a senior Product Manager. The direct involvement with engineering and marketing points to a highly integrated function.

Operations Impact: The UX/UI Designer directly impacts BMLL's ability to attract and retain sophisticated financial institution clients by ensuring their products are intuitive, efficient, and easy to use. A well-designed user experience is critical for adoption, user satisfaction, and ultimately, revenue generation in the B2B SaaS FinTech space.

Growth Opportunities:

• Design Leadership: Opportunity to grow into a Senior or Lead UX/UI Designer role, potentially managing junior designers or setting the strategic design direction for the company.

• Specialization: Deepen expertise in designing for complex data visualization and financial markets, becoming a subject matter expert within the FinTech UX community.

• Cross-Functional Advancement: Gain deep understanding of product management, engineering workflows, and marketing strategies within a FinTech context, opening doors to broader product roles.

• Learning & Development: Access to funded training, challenging projects, and potentially industry conferences to enhance design skills and stay abreast of FinTech trends.

📝 Enhancement Note: This role offers a clear path for career progression by allowing the designer to build and scale a critical design system and influence the user experience across an entire product portfolio. The FinTech industry itself provides a dynamic environment for continuous learning and specialization.

🌐 Work Environment

Office Type: BMLL offers a hybrid working model, combining remote work flexibility with regular in-office collaboration days. This suggests a modern, flexible work environment designed to support both independent work and team synergy.

Office Location(s): The primary office is located in London, England, United Kingdom. Specific details about the office facilities (e.g., collaborative spaces, amenities) are not provided but are implied to be conducive to team interaction, especially with weekly lunches and social events.

Workspace Context:

• Collaborative Hub: The London office serves as a central point for team collaboration, brainstorming sessions, and in-person stakeholder meetings, fostering a strong team dynamic.

• Tooling: Access to industry-standard design tools, with a strong emphasis on Figma, will be essential. The company likely provides necessary software licenses and hardware to support design work.

• Cross-functional Interaction: Opportunities for regular interaction with product managers, engineers, and marketing professionals, creating a dynamic and integrated work environment.

Work Schedule: The role is full-time, approximately 40 hours per week. The hybrid model allows for flexibility in structuring workdays, with 2 mandated days in the London office and the remainder remote. An additional benefit is the ability to work remotely abroad for up to 40 business days annually, offering significant lifestyle flexibility.

📝 Enhancement Note: The hybrid model, with a clear expectation of 2 days in the London office, is designed to balance the benefits of in-person collaboration with the flexibility of remote work. The additional allowance for working abroad is a significant perk that appeals to a globally-minded workforce.

📄 Application & Portfolio Review Process

Interview Process: The interview process is likely to be multi-stage, designed to assess design skills, technical proficiency, strategic thinking, and cultural fit.

• Initial Screening: A review of your resume and portfolio to assess basic qualifications and experience.

• Technical/Design Interview: A deep dive into your portfolio, focusing on specific case studies, design process, and problem-solving approaches. This may involve design challenges or whiteboarding exercises.

• Cross-functional Interviews: Meetings with Product Managers, Engineers, and potentially Marketing stakeholders to evaluate collaboration style, communication skills, and understanding of the product development lifecycle.

• Final Interview: Potentially with senior leadership to discuss strategic vision, career aspirations, and overall fit with the company culture and growth objectives.

Portfolio Review Tips:

• Curate for Relevance: Select case studies that best highlight your experience with design systems, B2B SaaS, data-heavy applications, and financial concepts (if applicable).

• Show, Don't Just Tell: Clearly articulate the problem, your role, your process, the constraints, the solution, and the impact (quantified where possible).

• Highlight Design System Ownership: Emphasize your experience in building, maintaining, and scaling design systems and UX guidelines. Showcase examples of consistency across different products.

• Focus on User Impact: Demonstrate how your design decisions led to improved user experiences, increased efficiency, or solved specific user pain points. Use data and research findings to support your claims.

• Be Ready to Discuss Figma: Be prepared to walk through your Figma files, explaining your design decisions, component usage, and prototyping techniques.

• Tailor to BMLL: Research BMLL's products (Data Lab, Data Feed, Vantage) and try to frame your experience in a way that resonates with their specific challenges and offerings.

Challenge Preparation:

• Design System Exercise: You might be asked to critique an existing interface, propose improvements to a design system, or sketch out solutions for a specific feature based on BMLL's product context.

• Problem-Solving Scenario: Be prepared for hypothetical scenarios related to user pain points, competing priorities, or technical constraints. Focus on your thought process, research methods, and collaborative approach.

• Communication Practice: Rehearse explaining complex design concepts clearly and concisely, as you'll need to communicate effectively with both technical and non-technical stakeholders.

📝 Enhancement Note: The interview process will likely scrutinize the candidate's ability to manage a design system and apply it consistently across diverse products. Demonstrating a strong understanding of user-centered design principles within a complex financial data context, alongside excellent collaboration and communication skills, will be key.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: The core design and prototyping tool, essential for wireframing, high-fidelity design, and collaboration. Proficiency in its advanced features, including component libraries, auto layout, and prototyping capabilities, is expected.

• Design System Management: Experience with tools or methodologies for managing and scaling design systems (e.g., Zeroheight, Storybook integration for documentation, or internal wiki/Confluence pages).

• User Research & Testing Platforms: Familiarity with tools for conducting user interviews, surveys, and usability testing (e.g., UserTesting.com, Maze, Lookback, SurveyMonkey).

Analytics & Reporting:

• While not a direct requirement for the UX/UI Designer, an understanding of how analytics tools (e.g., Google Analytics, Mixpanel, Amplitude) track user behavior can inform design decisions.

• Experience with data visualization tools or libraries (e.g., D3.js, Chart.js, Tableau) is beneficial, given the nature of BMLL's products. CRM & Automation:

• Not directly relevant to the UX/UI Designer role, but awareness of the B2B SaaS context means understanding how CRM systems (e.g., Salesforce) and marketing automation tools might integrate with or be used by clients.

📝 Enhancement Note: Figma proficiency is non-negotiable. The company also values a systematic approach to design, hence the emphasis on design systems and related documentation tools. While direct analytics tool experience isn't mandatory, an understanding of how data informs design is highly valued in a data-centric company.

👥 Team Culture & Values

Operations Values:

• User-Centricity: A core value will be a deep commitment to understanding and serving the needs of sophisticated financial market participants.

• Excellence & Precision: Given the FinTech domain, there's an inherent value placed on accuracy, reliability, and high-quality output in both data and design.

• Collaboration & Transparency: The hybrid model and cross-functional responsibilities emphasize teamwork, open communication, and a willingness to share knowledge and feedback.

• Innovation & Growth: As a growing company with recent investment, BMLL likely values forward-thinking, adaptability, and a proactive approach to problem-solving and improvement.

• Pragmatism: The ability to balance ideal design solutions with real-world technical and business constraints is a key operational value.

Collaboration Style:

• Integrated Teams: Expect to work closely with Product Managers and Engineers in a highly integrated fashion, likely within Agile sprints.

• Cross-Functional Partnerships: Strong relationships with Marketing are important for brand consistency and product positioning.

• Feedback-Oriented: A culture that encourages constructive feedback on designs and processes to drive continuous improvement.

• Knowledge Sharing: Opportunities to share UX best practices and insights across the organization.

📝 Enhancement Note: BMLL's culture likely reflects the demands of the FinTech industry: a blend of rigorous analytical thinking, a strong focus on user needs, and a collaborative, adaptive approach to innovation and growth. The emphasis on design systems points to a value placed on structured, scalable solutions.

⚡ Challenges & Growth Opportunities

Challenges:

• Complexity of Financial Data: Designing intuitive interfaces for highly complex, data-intensive financial products requires deep understanding and careful information architecture.

• Balancing User Needs with Technical Constraints: Navigating the trade-offs between ideal user experiences and the technical realities of a sophisticated B2B SaaS platform.

• Maintaining Consistency Across Products: Ensuring a unified and high-quality user experience across Data Lab, Data Feed, Vantage, and other tools as they evolve.

• Fast-Paced Environment: Adapting to evolving market demands, product roadmaps, and the rapid pace of growth within a FinTech company.

• Stakeholder Management: Effectively communicating and advocating for design decisions with diverse technical and business stakeholders.

Learning & Development Opportunities:

• Deepen FinTech UX Expertise: Gain specialized knowledge in designing for financial markets, data visualization, and trading platforms.

• Lead Design System Growth: Take on greater responsibility for the strategic direction and expansion of BMLL's design system.

• Impact Product Strategy: Influence the product roadmap and user experience strategy through research and design leadership.

• Skill Enhancement: Access to funded training, workshops, and potentially industry certifications in UX/UI design, FinTech, or related areas.

• Mentorship: Opportunities to learn from experienced professionals in product, engineering, and the financial industry.

📝 Enhancement Note: The primary challenges lie in the inherent complexity of the domain and the need for rigorous, consistent design execution across multiple products. These challenges, however, present significant growth opportunities for a designer looking to specialize in FinTech UX and take on leadership responsibilities.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you significantly evolved or contributed to a corporate design system. What were the key components, and how did you ensure adoption?" (Focus on your process, decision-making, and impact.)

• "Walk us through a complex B2B SaaS product you designed. What were the user challenges, how did you approach them, and what was the outcome?" (Highlight your problem-solving, user research, and Figma skills.)

• "How do you balance the needs of different stakeholders (e.g., engineering, product, marketing, sales) when designing a feature?" (Emphasize your communication, negotiation, and collaborative approach.)

• "Imagine you need to design a new dashboard for real-time market data analysis. What are the key considerations, and what would be your first steps?" (Demonstrate your understanding of data visualization, user needs in finance, and structured design thinking.) Company & Culture Questions:

• "What interests you about BMLL and the FinTech industry, particularly our focus on granular market data?" (Show genuine curiosity and research into BMLL's business.)

• "How do you approach working in a hybrid environment and collaborating with remote and in-office team members?" (Highlight your adaptability and communication strategies.)

• "Describe your experience working with engineering teams. How do you ensure smooth handoffs and effective collaboration?" (Focus on your understanding of development cycles and partnership.) Portfolio Presentation Strategy:

• Structure Your Case Studies: For each case study, clearly define the problem, your role and responsibilities, your design process (research, ideation, prototyping, testing), the final solution, and the measurable impact.

• Quantify Impact: Whenever possible, use data and metrics to demonstrate the success of your designs (e.g., improved conversion rates, reduced task completion time, increased user satisfaction scores).

• Showcase Design System Work: Dedicate time to explaining your contribution to design systems, highlighting component usage, style guides, and how you ensured consistency.

• Be Prepared for Live Design Exercises: Practice sketching out UI solutions or user flows on a whiteboard or digital canvas under timed conditions.

• Articulate Your 'Why': Be ready to explain the rationale behind every design decision you made.

📝 Enhancement Note: Expect interview questions to heavily probe your experience with design systems, your ability to handle complex data visualization, and your collaborative approach within a B2B SaaS FinTech context. Tailoring your portfolio and responses to BMLL's specific products and challenges will be crucial.

📌 Application Steps

To apply for this UX/UI Designer position:

• Submit your application through the provided application link on Workable.

• Portfolio Customization: Ensure your portfolio clearly highlights your experience with design systems, B2B SaaS products, and ideally, data-intensive applications. Tailor your case studies to showcase your ability to manage consistency across multiple products.

• Resume Optimization: Update your resume to emphasize keywords such as "UX/UI Design," "Figma," "Design Systems," "B2B SaaS," "Data Visualization," and "Financial Services" (if applicable). Quantify your achievements wherever possible.

• Interview Preparation: Practice articulating your design process, especially how you leverage user research and maintain design system integrity. Be ready to discuss your experience with Figma and how you collaborate with technical teams.

• Company Research: Thoroughly research BMLL Technologies, its products (Data Lab, Data Feed, Vantage), and its position in the FinTech market. Understand their client base and the importance of granular data.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details, particularly regarding salary ranges and specific interview processes, should be verified directly with BMLL Technologies during the application process.