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guillermo dieguez

PROFILE

Guillermo Dieguez

Guillermo Dieguez developed and maintained core features for the exactly/exa and exactly/mobile repositories, focusing on user onboarding, authentication, and payment flows. He engineered robust UI/UX improvements and stabilized cross-platform experiences using React Native, TypeScript, and Expo. Guillermo implemented standards-aligned user operations, integrated KYC and DeFi workflows, and enhanced reliability through error handling and state management. His work included cross-chain bridge support, SVG rendering, and localization, addressing both frontend and backend challenges. By refactoring components and optimizing data flows, Guillermo improved maintainability and scalability, delivering a cohesive product experience that reduced onboarding friction and increased operational stability across web and mobile.

Overall Statistics

Feature vs Bugs

63%Features

Repository Contributions

504Total
Bugs
123
Commits
504
Features
207
Lines of code
48,335
Activity Months16

Work History

February 2026

3 Commits • 3 Features

Feb 1, 2026

February 2026 (2026-02) - exactly/mobile: KYC reliability, payment sheet UX, and DeFi button status UX improvements. Delivered concrete changes to improve user experience, reliability, and clarity across KYC queries, payments, and wallet interactions. Resulted in smoother onboarding, fewer tolls of payment friction, and more accurate wallet-state representations in DeFi flows.

January 2026

65 Commits • 29 Features

Jan 1, 2026

January 2026: Delivered standards-aligned user operations (EIP-5792) and a sweeping UI/UX refactor across core components, improving usability and maintainability. Fixed high-impact bugs including asset selector logos, scientific notation parsing, and transfer chain handling. Enhanced developer experience with deprecation and ESLint fixes. Completed platform DX upgrades: migrated to Expo Router UI tabs, added LiFi data prefetch at startup, and integrated Persona Web SDK with KYC-on-deploy. These efforts reduced onboarding friction, improved reliability, and positioned the product for faster iteration and scale.

December 2025

25 Commits • 7 Features

Dec 1, 2025

December 2025 monthly summary for exactly/mobile: Delivered SVGR-based SVG rendering foundations by integrating SVGR core, patching the svg transformer for compatibility, and prefixing SVG IDs to prevent cross-component collisions. Implemented a Card UI UX overhaul with migration layout improvements and reordered action buttons to streamline workflows. Modernized Intercom integration (refactor and updated import) and added an Intercom user token, alongside Blockies-based user avatars for consistent identity visuals. Strengthened reliability across platforms with owner config reconnection fixes and comprehensive UI interaction fixes (send button state, banner render conditions, close button behavior), plus guardrails to prevent broken submissions and avoid web-native refresh on web. Accessible copy updates and UI text cleanups complemented feature work (asset selector accessibility and arrival time text improvements). These efforts deliver measurable business value: faster feature delivery, improved user experience, reduced support/release-risk, and consistent cross-platform behavior.

November 2025

15 Commits • 8 Features

Nov 1, 2025

November 2025 (2025-11) for exactly/mobile delivered a focused set of UI/UX refinements, stability improvements, and business-value features. Key outcomes include a unified USDC display across components with standardized borrow/withdraw limits, improved image handling with expo-image integration and asset logo caching, new token swap visibility on the account deployment screen, hardened authentication flow to reduce noisy errors, onboarding/connection UX refinements to streamline setup, and branding/assets modernization plus Visa Signature migration support to extend upgrade paths. A UI fix addressed balance text wrap, and a skeleton loading state for spending limits improved perceived performance during data loading. Overall impact: clearer balance/limits representation, faster asset rendering, smoother onboarding, reduced authentication friction, and stronger brand consistency across the app.

October 2025

17 Commits • 6 Features

Oct 1, 2025

October 2025 (repo: exactly/exa) monthly summary — Delivered user-centric UI refinements, flow stabilizations, and core stability improvements across high-impact features, resulting in clearer authentication, smoother onboarding, and more reliable funds transfers. The work enhances business value by improving onboarding efficiency, reducing user friction, and increasing portfolio visibility, which supports higher retention and trust. Demonstrated proficiency in UI/UX design, React-based state management, API design, and performance/stability optimizations.

September 2025

24 Commits • 8 Features

Sep 1, 2025

September 2025 (2025-09) – exactly/exa Overview - Delivered feature-rich updates focused on embedding context UX, authentication reliability, UI polish, and cross-chain capability, while stabilizing core screens with targeted bug fixes. These changes improve onboarding, security, and developer velocity through a consistent UI and scalable architecture. Key features delivered - Embedding Context and Redirect Handling: added embedding context detection and KYC redirect logic; server now allows client redirect URIs to support embedding scenarios. Commits include: 8e46d631abbcc347919154c79471c48691ef3930, 13292b0550331d3fcee5c0bd0c6cc2181b403b2d, 015517f14945ace6e667e543a8bed42290069885. - UI Styles, Layout, and Code Style Improvements: polish across swaps screen, shared progress screens, repayment sheet, pay selector input, and general style cleanup for consistency and readability. Commits include multiple UI/style related changes (d12efc0007778c1d7c66d20d9de54c24f626c2ad, 9793476ded1b8b3e4c23a6b4c526d1732bf710d1, 36ac077a907bb73946a483eca66619ef34133389, 3c40f97f9b6f587158289d6fda259a11981e7e8e, 6e2a8d47b27896ef4f5d9d82bb625c661bfb93e7, 87735c030c2198787d08b1eb9a2a984f61d237ed). - Proposal Screens UI Enhancement: added close button to proposal screens for improved navigation. Commit: 7c6dd3d07272f7bfda779bf3c6ac5b8f68cabdb2. - SIWE Authentication and Auth Flow: enhanced authentication for Sign-In with Ethereum (SIWE) and authenticated flow. Commit: a2b3653b37f0e10fe0fa9abe6dc7963946d25a5b. - Auth Button Styling and Replacement: introduced styled variants for app buttons and replaced the authentication button with a styled button. Commits: 70aba2bc1717cc5c6aa2754ceced2a7e4874585e, 3bebee8c22599fe19cc500f956561f072d9d538b. - Auth Button Loading State Fix: corrected auth button loading behavior. Commit: 2058783aae05759ba441d467ee69d154d96b5141. - Post Sign-In Mini App Launch: triggers addition of a mini app after sign-in. Commit: d34bf6a2664dd6117241ce8c0aa77969e1f61451. - Web UI Styling Enhancements: improved loading styles and added missing cursor properties for better UX. Commits: 2b735156af51b8a49faeadf3a7d44618b57d5f97, 602100103fc58631046d5b5caa05ab86311efbe8. - Lifi Bridge Implementation: implemented LIFI bridge integration. Commit: f4595faae821fac2847b8dcd75b072f3dd0f1c97. Major bugs fixed - Core App Screens: fixed copy address modal close, send funds QR screen, roll debt screen error state, and maturity validation on the payment sheet. Commits: 69c59b6b2b8b79d657e6957b60f7bffa947ca5e2, 4b777bc9a2fd6b7c456d83254a1a0ba1a4c23552, 7694d4b6ed6fdc8ab640b8ad06a6f9a3a3550a3c, 1fb4e8fe7a2746e15f1107c4e41d547c3cbec0fd. - Auth Button Loading State Fix: corrected the loading behavior of the authentication button. Commit: 2058783aae05759ba441d467ee69d154d96b5141. - Require Cycle Fix: resolved a require cycle issue in the codebase. Commit: 0a0401c43b78b86e482a779bb72e5e371af73e74. - QR Code Scanner Address Fix: fixed address handling in the QR code scanner. Commit: 065e841a56fb3e12afcfc8db3a9ac2fcaf28f1c1. Overall impact and accomplishments - Improved onboarding reliability and security with SIWE, plus a smoother user experience through UI polish and consistent styles. - Enabled cross-chain capability via LIFI integration, expanding supported workflows. - Reduced risk of runtime errors and improved stability on core screens through targeted bug fixes. - Accelerated time-to-value for end users and for the team with clearer navigation, a streamlined auth flow, and a more cohesive UI. Technologies and skills demonstrated - Frontend UX and UI polish (CSS/ layouts) and component-level consistency. - Sign-In with Ethereum (SIWE) authentication flow and security considerations. - Server-client redirect URI handling for embedding contexts. - Cross-chain bridge integration (LIFI). - Debugging, testing, and incremental release discipline across core app screens. Repository: exactly/exa

August 2025

27 Commits • 11 Features

Aug 1, 2025

August 2025 performance summary for exactly/exa: Delivered UX/UI and stability improvements across web and mini-apps, focused on business value through smoother onboarding, cross-platform parity, and maintainable code. Key features include opening Persona KYC in a new tab, safe area insets plus a new app loading state and an abstract sheet for UI consistency, and navigation/auth improvements for embedded contexts. A broad set of bug fixes targeted gradient rendering, banner interactions, modal alignment, and external link handling, reducing user friction. Maintenance and modernization efforts included refactoring navigation, removing redundant props/routes, and hoisting navigation packages for consistency. The work demonstrates strong React/React Native proficiency and tangible business impact: faster onboarding, fewer defects, and a more maintainable codebase.

July 2025

40 Commits • 18 Features

Jul 1, 2025

July 2025 performance focused on shipping high-impact UI/UX improvements, expanding DeFi capabilities, and strengthening authentication flows across the exactly/exa product. Deliveries reduced user friction, improved consistency, and enabled new interactions while maintaining stability through robust error handling.

June 2025

52 Commits • 23 Features

Jun 1, 2025

June 2025 — Delivered key payment, spending, and UX enhancements across the exactly/exa repo, strengthening business value through faster help access, clearer spend controls, and a more scalable UI. Outcomes include streamlined payment flows, improved loan and funds UX, and targeted refactors that boost maintainability and consistency across the app.

May 2025

51 Commits • 15 Features

May 1, 2025

May 2025 monthly summary for repo exactly/exa. Delivered UI stabilization and visual polish across the web app, laid the groundwork for localization, and strengthened core flows for card and user onboarding. Addressed critical reliability gaps in authentication, migration UI, and payment/card edge cases, resulting in improved user experience, discoverability, and operational stability.

April 2025

29 Commits • 16 Features

Apr 1, 2025

April 2025 (repo: exactly/exa) delivered a cohesive set of onboarding, reliability, data correctness, debt-management, and API/UI improvements. The work enhanced onboarding experience, improved data accuracy across regions, expanded debt workflows, and strengthened API resilience, enabling more reliable customer experiences and scalable growth.

March 2025

66 Commits • 20 Features

Mar 1, 2025

March 2025 monthly summary for exactly/exa: Delivered a set of high-impact UI/UX improvements and feature work that elevated usability, reliability, and business value. Highlights include a refreshed Card Visual Design and UI polish, a new Purchase Simulator flow, Spending Limits UI, Pay Later enhancements, and targeted code cleanup to improve maintainability and performance. The work reinforces product readiness for upcoming features and supports better user outcomes in purchases, budgeting, and overall card experience.

February 2025

12 Commits • 4 Features

Feb 1, 2025

Monthly summary for 2025-02 focusing on the exactly/exa repo. Delivered Pay Later enhancements across the app, added external assets support for repayments, introduced dynamic card logos with light/dark mode, corrected onboarding flow order, and tightened UI reliability and retry logic. These changes improved user experience, expanded repayment capabilities, and increased UI stability across platforms.

January 2025

21 Commits • 8 Features

Jan 1, 2025

January 2025 performance snapshot: Delivered user-centric frontend improvements across the core purchase flow and activity screens, expanded asset support, and refined spending controls. Reconciled data calculations to ensure accurate totals and repayments across web and mobile, reducing edge cases. Laid groundwork for LiFi routes and plugin compatibility, enabling broader integration capabilities and future feature delivery. These changes improve conversion, reduce user friction, and increase data accuracy and reliability across platforms.

December 2024

21 Commits • 13 Features

Dec 1, 2024

December 2024 (exactly/exa) - Focused on UX polish, onboarding acceleration, cross-version compatibility, and stability hardening. Delivered a redesigned payment screen, updated activity styles for consistency, and set account creation as the primary onboarding action. Extended repay support across plugin versions and improved repay asset handling, while linking info/help content to Intercom for self-service support. A targeted refactor extracted the fixed-rate calculation into a standalone function to improve maintainability. Fixed critical issues including white screen with no USDC collateral, invalid JSON responses, an auth query error, and authorization/expiry timing problems, reducing crash risk and API instability. Overall impact: faster onboarding, clearer UX, lower support load, and a more robust, scalable codebase. Skills shown: UI/UX design, React/JS code organization, modularization, error handling, and external service integration.

November 2024

36 Commits • 18 Features

Nov 1, 2024

November 2024 monthly summary focusing on business value and technical achievements across the mobile and EXA repos. Highlights include stability improvements, onboarding/KYC enhancements, UI/UX refinements, and expanded data/export capabilities that drive retention, usability, and operational insight.

Activity

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Quality Metrics

Correctness90.2%
Maintainability88.8%
Architecture85.2%
Performance86.0%
AI Usage23.2%

Skills & Technologies

Programming Languages

CSSHTMLJSONJSXJavaScriptMarkdownNativeReactReact NativeSVG

Technical Skills

API DevelopmentAPI IntegrationAPI integrationAsset ManagementAuthenticationBackend DevelopmentBuild ToolsCSSCSS Media QueriesCSS StylingCode ConsistencyCode LintingCode OrganizationCode RefactoringCodebase Management

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

exactly/exa

Nov 2024 Oct 2025
12 Months active

Languages Used

JavaScriptSVGTypeScriptYAMLtsxReact NativeCSSNative

Technical Skills

API IntegrationBackend DevelopmentComponent DesignComponent DevelopmentComponent RefactoringConfiguration Management

exactly/mobile

Nov 2024 Feb 2026
5 Months active

Languages Used

TypeScriptJSONJavaScriptMarkdown

Technical Skills

Frontend DevelopmentMobile DevelopmentState ManagementDeFi integrationExpoReact