
Don’t let inconsistent typefaces or subpar spacing impede accessibility or hurt your brand. These mobile typography guidelines will help enhance user experience and increase engagement.
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Expertise
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Create beautiful, intuitive mobile app experiences that delight users and drive business results. Toptal’s Mobile App Design Services blend creativity, strategy, and usability to deliver impactful, user-centered designs for every mobile device.
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As Toptal’s CEO of Technology Services, Robert leads strategy and operations across our technical services portfolio, spanning AI, automation, and operations. He previously served as Deloitte’s Managing Director & Chief Commercial Officer, transforming its Cloud Operate and Engineering business into a multibillion-dollar operation. He held senior roles at IBM, Velocity, co-founded Corio, and was CIO for two Fortune 100 manufacturers.As Toptal’s CEO of Technology Services, Robert leads strategy and operations across our technical services portfolio, spanning AI, automation, and operations. He previously served as Deloitte’s Managing Director & Chief Commercial Officer, transforming its Cloud Operate and Engineering business into a multibillion-dollar operation. He held senior roles at IBM, Velocity, co-founded Corio, and was CIO for two Fortune 100 manufacturers.
Previously At









CEO, Technology Services
As Toptal’s CEO of Technology Services, Robert leads strategy and operations across our technical services portfolio, spanning AI, automation, and operations. He previously served as Deloitte’s Managing Director & Chief Commercial Officer, transforming its Cloud Operate and Engineering business into a multibillion-dollar operation. He held senior roles at IBM, Velocity, co-founded Corio, and was CIO for two Fortune 100 manufacturers.
Previously at
Technology Experience
35+ Years

Delivery Manager
Rachael serves as a Delivery Manager at Toptal with a focus on leading diverse global teams in developing innovative solutions for our clients. She works across multiple disciplines, including technology, marketing, and management consulting. Rachael specializes in managing people and client relationships, process optimization, and driving teams toward optimal business outcomes.
Previously Managed Client
Experience
9+ Years

20+ Years
of Experience
Lee is a multifaceted product designer with a passion for developing great products and services. He has led design at leading Fortune 500 companies along with numerous startups to launch their MVPs. Lee leverages business and customer insights to collaborate on design solutions that are highly engaging and easy to use.
Previously at

17+ Years
of Experience
Jeremy is experienced in leading and driving design vision and strategy for Dropbox, Apple, Facebook, Cisco, Five9, PocketSuite, Zillow, Microsoft, and Expedia. He has also cooperated with many startups through his digital product design agency on zero-to-one initiatives, including Y Combinator and Founders Fund portfolio companies, helping them launch and bring products to market.
Previously at

11+ Years
of Experience
Rachel is a product designer passionate about enhancing human experiences through technology and user-centered design. With more than 11 years of experience, she has worked with startups and FAANG companies, leading research and product design efforts to align with business goals and address UX challenges. Rachel has worked across industries including autonomous vehicles, marketing automation, fintech, advertising, and recruitment platforms.
Previously at

7+ Years
of Experience
Adel, a seasoned UI/UX expert with more than seven years of experience, specializes in creating flawless user interfaces. His expertise spans collaborations with notable teams like Airbnb, Colgate, and Supercell. As a dedicated freelance, Adel thrives on solving diverse user challenges, bringing a passion for innovative design to every project.
Previously at

14+ Years
of Experience
A visual designer, Lucía has spent the last ten years working with companies and museums like IKEA, LEGO, Munch Museum, and the Museum of the Future, helping them build experiences for their customers. She is a keen problem solver and can deliver visual guidelines, exhibition artwork, event design, interface design, illustrations, and animations. Lucía loves challenging herself to find a unique voice for each project and developing it further through innovative yet simple visual communication.
Previously at

20+ Years
of Experience
Christine is a multidisciplinary creative UX designer with skills in illustration, copywriting, and branding who holds an MFA in product design. She has 20 years of experience at companies like CrowdStrike, Lowe's Home Improvement, The Hershey Company, and Dell. She uses design thinking processes to discover user needs, define value and fit with proofs-of-concept and MVPs, and iteratively improve and redesign products through testing and experiments.
Previously at










16+ Years
of Experience
With over a decade of experience in UX/UI and digital product design, Daniela has worked with leading corporations like Meta, eBay, Autodesk, Disney, and Salesforce, as well as innovative startups. Her background spans a wide range of companies, products, technologies, and user needs. Daniela’s approach integrates product vision, strategy, and execution, ensuring design excellence and high-quality delivery with cross-functional teams.
Previously at

20+ Years
of Experience
With over two decades of product design experience working with clients from within media, telecom, and online retail, Bill has designed a wide range of product types, such as e-commerce sites and streaming media apps for mobile and connected devices. He's led his teams' UI/UX efforts, taking his products from conception to production. Bill has also worked extensively with remote product teams using both Waterfall and Agile methodologies.
Previously at

35+ Years
of Experience
Mario is a seasoned, customer-driven professional with more than 35 years of experience in the management of digital transformation projects, developing, planning, and launching products in the telecommunications, financial, and media industries. He has helped companies create winning digital strategies and design world-class user experiences. Mario’s clients include Sony, Virgin Mobile, Monsanto, Huawei, and Blackberry.
Previously at

20+ Years
of Experience
With more than 20 years of design industry experience, Kate has delivered successful digital experiences for startups and well-known brands including Netflix and BlackLine. Her work spans industries and platforms. Leveraging her background in user research, Kate bridges the gap between strategy and experience, integrating design thinking into complex workflows.
Previously at

22+ Years
of Experience
Evgeny is a self-described hybrid designer which means that he's very experienced and successful in both UX/UI and visual design. He has more than 22 years of experience in designing the UX/UI for web and mobile applications across a broad range of industries including the internet of things (IoT), retail, computer games, design, real estate, and entertainment. His specialties are UX design, UI interaction design, and mobile/web application design.
Previously at

12+ Years
of Experience
Sushumna is a multidisciplinary designer with a decade of experience as an end-to-end UX Designer. Her contributions have been awarded and appreciated across domains—branding and marketing, employee management in corporate IT, safety industries, cyber security, and government projects. Sushumna believes that user needs, business needs, and technology considerations should work together for success. She helps stakeholders manage through her excellent UX and UI skills in complex product systems.
Previously at

11+ Years
of Experience
Charles is an expert brand strategist, product designer, and art director with more than 11 years of professional design experience in branding, marketing, and advertising. He has worked with SMEs, startups, and companies such as Coca-Cola, Netflix, Spotify, TikTok, ING, Unilever, Nestlé, H&M, Jollibee, and many more. Charles specializes in crafting winning stories and human-centric experiences through purposeful branding identity process, visual direction, and UI/UX design.
Previously at

30+ Years
of Experience
As a designer with more than 30 years of experience, Aaron has consistently created value and produced measurable results in UX and product design. He reduced costs by $70 million at Anthem.ai (now Carelon Digital Platforms), increased adoption by 600% at Deloitte, and enhanced productivity at Caterpillar. Aaron tackles complex challenges by taking a holistic approach that involves collaborating with stakeholders, aligning design with business strategy, and effectively identifying user needs to enhance the overall customer experience.
Previously at

28+ Years
of Experience
Mladen is a senior project manager and GRC consultant with extensive experience leading multi-country project teams in the banking and insurance sectors. He has worked with major corporations and startups on core technologies and mobile apps, overseeing IT projects' transformations and rollouts. Mladen led international teams and delivered multimillion-value projects at a fast pace, showcasing his role as an agile servant leader, especially during his tenure at Societe Generale and HVB group.
Previously at
Looking for guidance about the perfect mobile app design service for your needs?
Looking for guidance about the perfect mobile app design service for your needs?
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Having previously worked with these leading global companies, our talent brings valuable insights and expertise to deliver world-class outcomes.
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Challenge: The client, a top-five global financial services firm, aimed to tap into a new generation of clients by developing a mobile-native banking brand for its family of services. They had a project concept but needed specialized mobile app design and development services to create both the iOS and Android versions of their app.
Solution: Toptal provided mobile app design and development services, including a full team led by a seasoned technical lead. The team spearheaded the project, building the app and guiding the client’s internal teams.
Impact: The new app developed by Toptal’s team enabled the client to expand its presence in the retail and consumer banking sector, especially among younger mobile users. The app had a highly successful initial rollout, receiving strong customer praise and topping download charts across the UK. It has since expanded into US markets, where it maintains a 4.9-star rating from more than 160,000 App Store reviews.
Managing Director, Consumer & Wealth Management
Newsweek and Statista’s rankings were based on an independent survey of more than 2,400 decision-makers at Fortune 500s.
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Highest ranked across all industries
Other Professional Services
Methodology for the Rankings
How likely the respondent is to recommend the selected company to others.
Measures the convenience of interaction with the company and efficiency of processes.
Measures the company’s cost-effectiveness and quality relative to price.
Measures whether the company consistently meets or exceeds expectations in quality and timeliness of deliverables.
Measures the company’s ability to consistently fulfill commitments and maintain customer trust.
OUR THOUGHT LEADERSHIP
Read the latest articles and resources to keep you current on emerging trends in mobile app design best practices and insights.

Don’t let inconsistent typefaces or subpar spacing impede accessibility or hurt your brand. These mobile typography guidelines will help enhance user experience and increase engagement.
Read More
Expertise
Previously at
Mobile App Design Related Offerings
Discover additional ways we can support your goals. Toptal can help with every aspect of your project, from strategy to execution.
Looking for guidance about the perfect mobile app design service for your needs?
Get a Free Consultation Now