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Description: We're finishing the visual design for a payment authentication popup experience (SDK login flow, similar in spirit to Google Pay's auth popups), and need a designer to take partially-completed source files across the finish line to a professional, industry-standard, ready-to-develop state. Scope of Work 1. SDK / iframe authentication flow — 5 screens Each of the 5 popup screens in the login flow needs to be finalized and delivered at all 5 EMV 3-D Secure (3DS2) standard challenge window sizes: • 01: 250×400px • 02: 390×400px • 03: 500×600px • 04: 600×400px • 05: Full Screen That's 5 screens × 5 sizes = 25 total artboards. Layouts must hold up cleanly at each size — no clipped buttons, no broken proportions — since these map directly to the challengeWindowSize / acsWindowSize parameters used by payment processors (Stripe, Braintree, etc.). 2. Browser extension login flow — 3 screens 3 popup screens, delivered at a single fixed size: 357×600px, the de facto standard used by wallet-style browser extensions (within the 25×25–800×600 range Chrome/Firefox permit for extension popups). What We'll Provide • Partially finished designs as Adobe Illustrator (.ai) source files for you to build from • Access/onboarding to our self-hosted Matrix chat server (handled by our Codebase Coordinator) • Instructions for delivering finished work into our self-hosted Penpot instance for review and payment release What We Need From You • Strong experience with fintech/payment or wallet-style UI (crisp, trustworthy, "industry standard" visual language — think Google Pay, Stripe Checkout, MetaMask) • Comfort working in Penpot (or willingness to import/convert from Illustrator into Penpot) • Ability to collaborate async over Matrix chat • Attention to responsive/adaptive layout constraints across fixed pixel dimensions Deliverables • 25 finalized SDK popup artboards (5 screens × 5 sizes) • 3 finalized browser extension popup screens (357×600px)
Project ID: 40566804
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Active 6 days ago
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Hello! I carefully read your project description and understand what you're looking for. I can complete this project with high quality and attention to detail. I have experience in logo design and vector graphics, and I will provide clean, professional, and editable source files. I would be happy to discuss the project further. Thank you for your time! Sir, if you want any changes to my design, please message me. I am a qualified Professional Graphics designer. Logo design, Business Card Design, Flayer Design, photo editing, Banner Design is huge part of my life. I work hard to produce the highest quality, effective, innovative, timeless, designs that my clients will love and I would love to work with you! . PHOTO RE SIZING . UNNECESSARY OBJECT REMOVE Looking forward provide you services with my best expertise. Thanks to you all My Skills: . PROFESSIONAL LOGO DESIGN . FLAYER DESIGN . BUSINESS CARD DESIGN . BROCHURE DESIGN . BACKGROUND REMOVAL
$15 USD in 7 days
0.0
0.0
83 freelancers are bidding on average $33 USD for this job

Hello, I have read your complete requirements carefully, and it would be an honor to work with you on your SDK and browser popup UI design project. With 14 years of UI/UX design experience, I can refine your existing Adobe Illustrator files into polished, production-ready designs with consistent layouts across all required EMV 3DS2 challenge window sizes and browser extension dimensions. I will ensure the interface reflects a modern fintech aesthetic with clean typography, responsive spacing, and a trustworthy user experience suitable for payment authentication flows. The final designs will be organized for easy developer handoff, converted into Penpot if required, and delivered with attention to pixel-perfect accuracy. Please check my profile to see my reviews and ratings from previous clients and similar UI/UX projects. Budget and timeline can be discussed further. Warm regards, **Harpreet Singh**
$20 USD in 5 days
9.4
9.4

As a seasoned visual designer, with an extensive background in the Adobe Suite (including Illustrator), I have a deep appreciation for clean, industry-standard design, especially within the fintech and payment space. My portfolio showcases my ability to deliver crisp, trustworthy designs necessary for a UI of this magnitude. In fact, some of my work is reminiscent of Google Pay and Stripe Checkout, which are fitting benchmarks for your project. I am fluent in Penpot and have the necessary skills to import and convert from Illustrator where needed. I understand that missteps in layout can translate into larger problems down the project line. However, my experience with responsive/adaptive design will ensure each pixel is accounted for regardless of the challengeWindowSize or acsWindowSize parameter involved. Through our Matrix chat exchange and onboarding process managed by your Codebase Coordinator, I commit to upholding prompt communication while maintaining consistency and industry-grade quality.
$15 USD in 1 day
8.0
8.0

I hope you're doing well! My name is Nawal, and I bring over nine years of experience in SDK & Browser Popup Design. After carefully reviewing your project brief, I’m confident that I understand your needs and can deliver exactly what you're looking for. Here’s what I offer: ✅ Multiple initial drafts within 24 to 48 hours ✅ Unlimited revisions until you're 100% satisfied ✅ Final delivery in all required formats, including the editable master file and full copyright ownership You can check out my profile, portfolio and past work here: https://www.freelancer.com/u/eaglegraphics247 I’d love to discuss your project further and explore how we can make your vision a reality. Let me know a convenient time for a quick chat! Looking forward to working together. Best regards, Nawal Maredia
$30 USD in 1 day
7.4
7.4

Hello Finishing the visual design is exciting, but the real challenge is ensuring the final implementation matches your vision pixel-for-pixel. I specialize in translating completed design files into clean, high-performance frontend code. Recently, I took a client's final Figma mockups and built a responsive, fast-loading site that matched their design exactly. Can you share a preview of the designs so we can discuss the development timeline? Giáp Văn Hưng
$30 USD in 7 days
6.9
6.9

Hello, You've mentioned the need for a designer to complete the visual design for a payment authentication popup experience, including SDK and browser extension login flows. My name is Sajida Saqira, and I have extensive experience in UI/UX design, particularly in fintech and payment interfaces. For your project, my approach would be to meticulously finalize the 25 SDK popup artboards and 3 browser extension popup screens to meet the EMV 3-D Secure standard challenge window sizes and industry-standard visual language requirements. I am proficient in Penpot and can seamlessly collaborate over Matrix chat to ensure a smooth workflow. To get a better sense of my skills, please visit my portfolio: https://www.freelancer.com/u/SajidaSaqira/SS-Technologies I would love to discuss how I can contribute to bringing your project to fruition. Looking forward to the opportunity to collaborate. Best regards, Sajida Saqira
$22 USD in 7 days
6.6
6.6

Hello, I came across your SDK & Browser Popup Design and I am very interested in working with you. I have reviewed your requirements and full understand the scope of expectations. I specialize in Website Design, Web Development, Web Design, and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity and professionalism. I work transparently throughout the project progress, deadlines and expectation stay clear at every stage. I would be glad to disucss further details and am ready to start immediately. Looking forward to hearing from you.
$100 USD in 1 day
6.0
6.0

Hello, "I'LL REFINE YOUR PAYMENT AUTHENTICATION FLOWS INTO PIXEL-PERFECT, PRODUCTION-READY ARTBOARDS THAT REMAIN CONSISTENT ACROSS EVERY REQUIRED SCREEN SIZE." I specialize in graphic design, 2D and 3D animation, video editing, and creative asset production using tools like Adobe Illustrator, After Effects, and Canva. From branding materials and infographics to explainer animations and promotional edits, I focus on delivering high-quality, visually cohesive content that contributes to your project's goals. Whether you need crisp vector illustrations, smooth video transitions, or detailed motion graphics, I work with precision and creativity to ensure each piece integrates seamlessly into your overall vision. Feel free to check out my work here: https://www.freelancer.com/u/shahmeer9090 Once I have a better understanding of the scope and direction, I can get started immediately and meet your deadline and budget. Sincerely, Shahmeer
$15 USD in 1 day
6.0
6.0

As an enthusiastic member of the Marediasoft team, I am more than capable of weaving your partial designs into enchanting and industry-standard visualizations akin to the likes of Google Pay and Stripe Checkout. The challenge of a payment authentication experience is not one to underestimate, and my extensive background in fintech and wallet-style UI design will prove immensely valuable in delivering crisp, trustworthy, and "industry standard" popup screens. Moreover, with fluency in Adobe Illustrator, Figma, and Penpot or my ability to convert files, I assure you a seamless workflow that gives you freedom from any collaborative or technological hiccups. My comfort working with javascript aligns excellently with the goal to build SDK and Browser popups with unbroken proportions to cater to all sizes as required and deliver responsive layouts adhering to fixed pixel dimensions. Additionally, being well-versed in payment processing intricacies allows me to understand the significance of these elements influenced by the stripe, Braintree, etc. Lastly, I am not just about augmenting visuals but also about creating measurable and enduring business-customer relationships through branding. And this project is a wonderful opportunity for me to showcase my skills in digital marketing together with website development while assuring you a distinct aesthetic experience rooted in trustworthiness; an amalgamation best suited for your requirement.
$20 USD in 1 day
6.1
6.1

Hi there, I specialize in fintech UI design and have hands-on experience crafting payment authentication flows, including EMV 3-D Secure challenge windows. I understand the unique constraints of SDK and iframe popup design—particularly how layouts must hold up cleanly across all five standard 3DS2 challengeWindowSize dimensions without clipped buttons or broken proportions. I can take your partially completed source files and finalize all 25 artboards into a polished, developer-ready Figma package. My approach ensures that typography, spacing, and component proportions scale gracefully at 250×400, 390×400, 500×600, 600×400, and Full Screen, delivering the trustworthy, industry-standard finish your authentication flow requires. I am comfortable working within strict iframe boundaries and can provide organized components, responsive variants, and clear developer handoff specs so your engineering team can move straight to build. With a background in payment interfaces, responsive web design, and UI systems, I am confident I can bring this login flow across the finish line efficiently and accurately. I would love to review your current source files and discuss timelines. Are you available for a brief chat this week to align on the remaining design details? Best regards, Anup
$20 USD in 7 days
6.2
6.2

As a seasoned Creative Graphic Designer and Brand Visual Specialist, I am highly experienced in producing pixel-perfect designs and UI elements--ingredients that are essential for the completion of your SDK & Browser Popup Design. Collaborating seamlessly with asynchronous engagement is one of my strong suits, as it allows me to work effectively and quickly. Being familiar with Penpot, I understand the importance of delivering functional, industry-standard designs ready for development which is crucial for a project of this magnitude. Impressively, my portfolio features various fintech/payment and wallet-style designs that demonstrate not only a crisp and trustworthy visual language but also an understanding of strict responsive/adaptive layout constraints across fixed pixel dimensions. My expertise encompasses much more than graphic design. Video editing, motion graphics, branding all make up my broad skillset that could add even more dynamic visuals to your project. Your satisfaction means everything to me; therefore, I prioritize clear communication and fast delivery without compromising on quality. Trust me to transform your partially-completed Adobe Illustrator source files into refined professional designs that align with the vision you have for your project. Let's create something exceptional in line with Google Pay, Stripe Checkout or MetaMask!
$30 USD in 1 day
6.1
6.1

Hi, I can polish your SDK and browser popup designs into a clean, production-ready UI with consistent layouts across all required sizes. I'm experienced in responsive UI design and can deliver organized, developer-friendly files with a quick turnaround. Please have a look at my previous work: https://www.freelancer.com/u/abduldesigner322 Let's open a chat to discuss the project timeline and cost. Best regards, Zenre Designs F
$30 USD in 1 day
6.2
6.2

Payment authentication interfaces succeed when every fixed-size window feels trustworthy and usable, because a clipped button or inconsistent hierarchy in a 3DS challenge flow can directly affect user confidence and completion rates. The key detail here is designing for the EMV 3DS constraints rather than treating each popup as a resized mockup. I've worked on product interfaces where responsive behaviour and clean component consistency mattered across different screen sizes, so I understand the need for precise layouts, reusable patterns and developer-ready handoff rather than just visual polish. The finished designs would preserve a secure fintech feel across all SDK challenge windows and extension popups, with consistent spacing, states and components ready for implementation in Penpot. One question before starting: are the existing Illustrator files already mapped to the required 3DS screens and states, or should the current designs first be audited against the challengeWindowSize requirements? Best regards, Fizza Nadeem K
$15 USD in 3 days
5.8
5.8

Hi, I’d love to help finalize your authentication flow and deliver polished, developer-ready UI. I have extensive experience designing clean, responsive interfaces in Adobe Illustrator and Figma, with a strong focus on fintech-style UX that feels trustworthy, modern, and production-ready. I’m comfortable adapting layouts across multiple screen sizes, ensuring every artboard maintains perfect spacing, hierarchy, and usability. I can work asynchronously, collaborate through Matrix, and deliver organized assets in Penpot for a smooth developer handoff. I’m detail-oriented, communicate clearly, and can efficiently bring your partially completed designs to a professional, industry-standard finish.
$20 USD in 2 days
5.6
5.6

Hi! I'd love to help finalize your payment authentication UI into a polished, production-ready design system that meets industry standards and is ready for development. With experience designing clean, secure fintech interfaces, I'll refine your existing Illustrator files, ensuring every screen scales perfectly across all required EMV 3DS2 challenge window sizes while maintaining consistent spacing, typography, and usability. What I'll deliver: ➡️ 25 finalized SDK authentication popup artboards (5 screens × 5 sizes) ➡️ 3 browser extension popup screens (357×600px) ➡️ Responsive layouts with no clipping or broken proportions ➡️ Developer-ready assets with consistent UI components ➡️ Penpot-compatible files (or Illustrator-to-Penpot conversion) ➡️ Clear async communication via Matrix throughout the project My focus is on creating interfaces that feel trustworthy, intuitive, and aligned with modern payment experiences like Google Pay, Stripe Checkout, and MetaMask, while ensuring smooth developer handoff. Portfolio: https://www.freelancer.com/u/leenadvnani6 Estimated turnaround: 4–6 days, depending on feedback and final refinements. I'd love the opportunity to help bring your authentication flow to a professional, production-ready standard. Best regards, Leena
$10 USD in 1 day
5.8
5.8

Hi, I can help finalize your payment authentication UI into a polished, developer-ready design system. I understand the challenge is not just visual design but creating adaptive 3DS2 popup layouts across 25 fixed-size artboards without breaking usability. I’ll refine the existing Illustrator files, ensure consistent fintech-style UI patterns, and prepare the screens properly in Penpot for development handoff. I have experience designing clean, trustworthy interfaces for payment flows, dashboards, and responsive fixed-size experiences. Best Regards, Muhammad Saad K
$10 USD in 3 days
5.6
5.6

Your project requires more than just visual refinement—it needs a payment authentication experience that feels trustworthy, consistent, and production-ready across strict 3DS2 challenge window sizes. A well-crafted UI system is essential for ensuring users can complete secure payment steps smoothly on every device and format. I have experience designing clean, modern UI/UX interfaces with strong attention to responsive layouts, component consistency, and developer handoff requirements. I can refine your existing Illustrator designs, adapt the SDK authentication screens across all required dimensions, and ensure every popup maintains proper spacing, hierarchy, and usability. I can also prepare the browser extension screens with a polished wallet-style interface suitable for fintech products. I’m comfortable working with design systems, fixed-size responsive challenges, and collaboration workflows for smooth review and iteration. One question: are the existing Illustrator files already organized with reusable components and styles, or should I help structure them during the refinement process? Best regards, Abeer Ahmed
$50 USD in 1 day
5.2
5.2

Hello, My name is Ben Jackson from Jetjams Technologies. We would love to help finalize your payment authentication UI and deliver a polished, developer-ready design that meets industry standards for fintech applications. What we will deliver: * Finalize all 25 SDK authentication popup artboards * Design 3 browser extension popup screens * Responsive layouts for all required challenge window sizes * Clean, modern fintech UI with consistent styling * Penpot-ready files (or Illustrator to Penpot conversion) * Organized source files and developer-friendly assets * Fast communication and revisions as needed Our team has experience designing professional web and application interfaces with a strong focus on usability, consistency, and responsive layouts. Price: * Best reasonable price: $600 USD We are so much grateful to serve you. Best regards, Ben Jackson Jetjams Technologies
$600 USD in 7 days
5.2
5.2

Hi There, I understand you're looking for an experienced designer to finalize the visual design for your payment authentication popup experience. With my 6+ years of expertise in Graphic Design, User Interface, Web Development, and Payment Processing, I am well-equipped to meet your project needs with precision. I possess a strong background in creating industry-standard fintech UIs, ensuring each of the 25 SDK popup artboards and 3 browser extension screens are not only visually appealing but also adhere to your specified dimensions without any structural issues. I am also willing to adapt to Penpot for collaboration and design continuity. You can view my portfolio here to see examples of my work: https://www.freelancer.com/u/haseebsidd07 I am excited about the potential to contribute to your project and deliver high-quality results. Thank you for considering my proposal. Regards, Abdul Haseeb Siddiqui
$20 USD in 7 days
5.1
5.1

Hi, I can help finalize your fintech payment authentication UI flow and deliver a polished, developer-ready design system across all required screen sizes. I’ll refine the existing Illustrator files, ensure responsive/adaptive layouts work correctly across all 3DS2 challenge window dimensions, and maintain a clean, trustworthy visual style inspired by modern payment platforms. I’m experienced with UI/UX design, Figma/Penpot workflows, component-based layouts, and creating developer-friendly handoff files. ⭐⭐⭐ Fintech UI/UX | Payment flows | Responsive design systems Portfolio https://www.freelancer.com/u/nenelilly Best regards, Kennedy Page S
$20 USD in 1 day
5.3
5.3

Hi, I see you're looking for a designer to finalize your payment authentication popup experience. You need 25 artboards for the SDK login flow and 3 for the browser extension, all adhering to specific dimensions and standards. It’s crucial that the layouts are clean and professional, matching the industry standards of trusted platforms like Google Pay and Stripe. My approach would involve refining your existing designs, ensuring that each screen is optimized for responsiveness and maintains visual integrity across all specified sizes. I have experience in fintech UI design, which equips me to create interfaces that feel reliable and intuitive for users. Collaborating via your Matrix chat server will be smooth, as I'm comfortable with async communication. I’m committed to delivering a polished product that meets your needs while ensuring a seamless user experience. Best regards, Novalitz Tech
$10 USD in 1 day
4.6
4.6

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