IndexCoop/index-app
Nov 2024 – Jun 2025
8 Months active
Languages Used
JavaScriptTypeScriptCSSHTMLJSONSVGReacttsx
Technical Skills
API DevelopmentAPI IntegrationAPI developmentBackend DevelopmentCode CleanupConfiguration
JD
PROFILE
Jd
Jann Driessen contributed to the IndexCoop/index-app repository, delivering a broad range of user-facing and backend features over eight months. He engineered robust API integrations and migrations, enhanced trading and leverage flows, and expanded asset and token support, focusing on reliability and maintainability. Using TypeScript, React, and Next.js, Jann refactored legacy components, improved data fetching and error handling, and introduced dynamic UI elements for onboarding and analytics. His work included integrating new DeFi protocols, optimizing slippage and quote systems, and streamlining wallet and token management. The depth of his contributions enabled scalable growth and improved user experience across the platform.
Overall Statistics
Feature vs Bugs
87%Features
Repository Contributions
96Total
Bugs
6
Commits
96
Features
39
Lines of code
23,027
Activity Months8
Your Network
4 peopleShared Repositories
4
Work History
June 2025
11 Commits • 4 Features
Jun 1, 2025June 2025: Delivered a set of user-focused frontend enhancements and foundational API migrations in IndexCoop/index-app that improve onboarding, earn flows, data reliability, and UI consistency, while reducing technical debt and enabling scalable growth. Key outcomes include an enhanced leverage onboarding experience, a polished Earn widget with clearer cost/fee visibility, a comprehensive API v2 migration (stats/markets, PRT fees, CoinGecko price data) with removal of legacy analytics, and a refined token icon UI. A bug fix ensured Earn summary correctly handles max spend scenarios.
11 Commits • 4 Features
Jun 1, 2025June 2025: Delivered a set of user-focused frontend enhancements and foundational API migrations in IndexCoop/index-app that improve onboarding, earn flows, data reliability, and UI consistency, while reducing technical debt and enabling scalable growth. Key outcomes include an enhanced leverage onboarding experience, a polished Earn widget with clearer cost/fee visibility, a comprehensive API v2 migration (stats/markets, PRT fees, CoinGecko price data) with removal of legacy analytics, and a refined token icon UI. A bug fix ensured Earn summary correctly handles max spend scenarios.
June 2025
May 2025
12 Commits • 6 Features
May 1, 2025May 2025 highlights for IndexCoop/index-app: Delivered a focused set of user- and trader-facing enhancements across quotes, swaps, leverage, and UI, while removing legacy code and refreshing branding. The work improves reliability, reduces friction in execution, and enables richer market simulation and risk visibility for better decision-making. Key outcomes include accelerated, error-resilient quote handling; immediate trade execution post-quote; refined swap logic and slippage defaults; expanded leverage widget with new tokens and Tenderly-based simulations; a refreshed UI branding and a prominent promotions banner to communicate product updates; and a leaner codebase with Earn-old components removed, reducing maintenance burden and tech debt.
May 2025
12 Commits • 6 Features
May 1, 2025May 2025 highlights for IndexCoop/index-app: Delivered a focused set of user- and trader-facing enhancements across quotes, swaps, leverage, and UI, while removing legacy code and refreshing branding. The work improves reliability, reduces friction in execution, and enables richer market simulation and risk visibility for better decision-making. Key outcomes include accelerated, error-resilient quote handling; immediate trade execution post-quote; refined swap logic and slippage defaults; expanded leverage widget with new tokens and Tenderly-based simulations; a refreshed UI branding and a prominent promotions banner to communicate product updates; and a leaner codebase with Earn-old components removed, reducing maintenance burden and tech debt.
April 2025
4 Commits • 3 Features
Apr 1, 2025Month: 2025-04 Concise monthly summary for IndexCoop/index-app. Key features delivered: - Trading Experience: Remove VPN-based trade restriction — streamlined user journey for trades in the smart trade button and related hooks. Commit: 9c3016ea6261c521560003e0f06541403d97afc5. - Trading Quotes and Slippage System Enhancements — introduced automatic slippage endpoint, migrated quote API to a new URL, refactored quote route to a new utility, and removed legacy earn components to support dynamic slippage. Commits: 2cc9b8a883e2082d77b50f0107ff2b0ded788974; af5fa1b1bd11322bbf3383213f422b82115c7be4. - Wallet Account Retrieval Integration with AppKit — refactored wallet hook to use AppKit's useAppKitAccount for centralized wallet address retrieval. Commit: 6173d783944a1f20dec62d0f704b15377ba8cbe5. Major bugs fixed: - VPN-based trade restriction removal fixes a flow blocker and unblocks trades; improves user onboarding and trading reliability. Commit: 9c3016ea6261c521560003e0f06541403d97afc5. - API migration and slippage utilities improved quote reliability and performance. Commits: 2cc9b8a883e2082d77b50f0107ff2b0ded788974; af5fa1b1bd11322bbf3383213f422b82115c7be4. Overall impact and accomplishments: - Delivered a more seamless and scalable trading experience with faster, more accurate quotes and dynamic slippage support. - Centralized wallet address retrieval reduces maintenance and risk, enabling easier onboarding of new users. - Demonstrated end-to-end feature work: from UX improvements to backend API migrations and AppKit integration. Technologies/skills demonstrated: - Frontend: React hooks, refactoring for AppKit integration, UI/UX improvements for trading. - Backend/API: Slippage endpoints, quote API migration, new utilities. - Infra/Tooling: 0x migration awareness, removal of legacy components. - Collaboration: Clear commit messages and cross-repo coordination (single repo here).
4 Commits • 3 Features
Apr 1, 2025Month: 2025-04 Concise monthly summary for IndexCoop/index-app. Key features delivered: - Trading Experience: Remove VPN-based trade restriction — streamlined user journey for trades in the smart trade button and related hooks. Commit: 9c3016ea6261c521560003e0f06541403d97afc5. - Trading Quotes and Slippage System Enhancements — introduced automatic slippage endpoint, migrated quote API to a new URL, refactored quote route to a new utility, and removed legacy earn components to support dynamic slippage. Commits: 2cc9b8a883e2082d77b50f0107ff2b0ded788974; af5fa1b1bd11322bbf3383213f422b82115c7be4. - Wallet Account Retrieval Integration with AppKit — refactored wallet hook to use AppKit's useAppKitAccount for centralized wallet address retrieval. Commit: 6173d783944a1f20dec62d0f704b15377ba8cbe5. Major bugs fixed: - VPN-based trade restriction removal fixes a flow blocker and unblocks trades; improves user onboarding and trading reliability. Commit: 9c3016ea6261c521560003e0f06541403d97afc5. - API migration and slippage utilities improved quote reliability and performance. Commits: 2cc9b8a883e2082d77b50f0107ff2b0ded788974; af5fa1b1bd11322bbf3383213f422b82115c7be4. Overall impact and accomplishments: - Delivered a more seamless and scalable trading experience with faster, more accurate quotes and dynamic slippage support. - Centralized wallet address retrieval reduces maintenance and risk, enabling easier onboarding of new users. - Demonstrated end-to-end feature work: from UX improvements to backend API migrations and AppKit integration. Technologies/skills demonstrated: - Frontend: React hooks, refactoring for AppKit integration, UI/UX improvements for trading. - Backend/API: Slippage endpoints, quote API migration, new utilities. - Infra/Tooling: 0x migration awareness, removal of legacy components. - Collaboration: Clear commit messages and cross-repo coordination (single repo here).
April 2025
March 2025
15 Commits • 7 Features
Mar 1, 2025March 2025 monthly summary for IndexCoop/index-app: Focused on expanding leverage token capabilities, strengthening security and reliability, advancing data accessibility, and elevating the user experience across Earn, Leverage, and Swap flows. Delivered multiple high-impact features, security hardening, and architecture improvements that underpin the product’s growth and risk management.
March 2025
15 Commits • 7 Features
Mar 1, 2025March 2025 monthly summary for IndexCoop/index-app: Focused on expanding leverage token capabilities, strengthening security and reliability, advancing data accessibility, and elevating the user experience across Earn, Leverage, and Swap flows. Delivered multiple high-impact features, security hardening, and architecture improvements that underpin the product’s growth and risk management.
February 2025
7 Commits • 3 Features
Feb 1, 2025February 2025: Focused on delivering core protections, UI/UX enhancements, and product cleanups while maintaining a clear emphasis on business value and maintainability. Key outcomes include improved protection against restricted addresses, streamlined asset surface, and enhanced decision-making visibility through new metrics.
7 Commits • 3 Features
Feb 1, 2025February 2025: Focused on delivering core protections, UI/UX enhancements, and product cleanups while maintaining a clear emphasis on business value and maintainability. Key outcomes include improved protection against restricted addresses, streamlined asset surface, and enhanced decision-making visibility through new metrics.
February 2025
January 2025
12 Commits • 5 Features
Jan 1, 2025January 2025 delivered significant backend and frontend improvements for IndexCoop/index-app, expanding asset coverage, tightening trading controls, and modernizing the API layer while enhancing user experience and maintainability. The work focused on delivering measurable business value through better transparency, broader market access, and more reliable, scalable systems.
January 2025
12 Commits • 5 Features
Jan 1, 2025January 2025 delivered significant backend and frontend improvements for IndexCoop/index-app, expanding asset coverage, tightening trading controls, and modernizing the API layer while enhancing user experience and maintainability. The work focused on delivering measurable business value through better transparency, broader market access, and more reliable, scalable systems.
December 2024
18 Commits • 5 Features
Dec 1, 2024December 2024 monthly summary for IndexCoop/index-app: Focused on delivering business value through robust multi-network UI improvements, data accuracy, and performance enhancements. Delivered key features in Earn and Leverage areas, improved pricing and token coverage, migrated quotes to API v2, and upgraded core SDKs. Fixed critical bugs in data queries and rounding for small numbers. Achieved measurable impact: improved user experience, faster quote times, and simplified token/path management across networks, enabling broader user adoption and revenue opportunities.
18 Commits • 5 Features
Dec 1, 2024December 2024 monthly summary for IndexCoop/index-app: Focused on delivering business value through robust multi-network UI improvements, data accuracy, and performance enhancements. Delivered key features in Earn and Leverage areas, improved pricing and token coverage, migrated quotes to API v2, and upgraded core SDKs. Fixed critical bugs in data queries and rounding for small numbers. Achieved measurable impact: improved user experience, faster quote times, and simplified token/path management across networks, enabling broader user adoption and revenue opportunities.
December 2024
November 2024
17 Commits • 6 Features
Nov 1, 2024November 2024 monthly summary for IndexCoop/index-app. The month delivered a suite of user-facing and backend enhancements across leverage UI, Earn, ICUSD minting/quotes, and token data coverage, coupled with stability and observability improvements. The work emphasizes business value through improved balance visibility, enabling tested Earn flows, expanded token support, and robust price data retrieval and logging.
November 2024
17 Commits • 6 Features
Nov 1, 2024November 2024 monthly summary for IndexCoop/index-app. The month delivered a suite of user-facing and backend enhancements across leverage UI, Earn, ICUSD minting/quotes, and token data coverage, coupled with stability and observability improvements. The work emphasizes business value through improved balance visibility, enabling tested Earn flows, expanded token support, and robust price data retrieval and logging.
Activity
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Quality Metrics
Correctness87.4%
Maintainability86.2%
Architecture83.0%
Performance83.4%
AI Usage24.2%
Skills & Technologies
Programming Languages
CSSHTMLJSONJavaScriptReactSVGTypeScripttsx
Technical Skills
API DevelopmentAPI IntegrationAPI developmentAnalytics TrackingAsset ManagementBackend DevelopmentBuild ToolsChart IntegrationCleanupCode CleanupCode LintingCode RefactoringComponent DevelopmentComponent RefactoringConfiguration
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