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Mithat Akbulut

PROFILE

Mithat Akbulut

Over the past year, Mar Marisco led engineering on the 0xsequence/marketplace-sdk, building a robust, multi-marketplace platform for NFT trading and asset management. Marisco architected and delivered features such as paginated listing queries, advanced filtering, and dynamic royalty calculations, all while modernizing the UI with React, TypeScript, and Tailwind CSS. The work included integrating smart contract interactions, enhancing error handling, and implementing scalable data-fetching patterns using React Query. By refactoring core components and strengthening test coverage, Marisco improved reliability, developer experience, and business value, ensuring the SDK supports complex workflows and seamless integration for both end-users and developers.

Overall Statistics

Feature vs Bugs

76%Features

Repository Contributions

1,272Total
Bugs
156
Commits
1,272
Features
482
Lines of code
223,248
Activity Months12

Work History

October 2025

49 Commits • 12 Features

Oct 1, 2025

October 2025 Monthly Summary Business value and impact: - Calendar/date UX improvements across the marketplace SDK reduced expiration-date ambiguity and improved user trust with consistent formatting and end-of-day semantics. - Improved UI reliability and visual consistency for the calendar, lowering rendering issues and reducing support friction. - Stronger monetization, pricing accuracy, and offer UX through royalty-fee enhancements, OpenSea validations, and streamlined PriceInput/MakeOfferModal flows. - Faster, data-driven decisions enabled by new market data pathways (paginated listing queries and active listings/offers currencies) and refined currency filtering. - Improved release quality and maintenance posture with Changesets, CI hygiene (linting), LAOS cleanup, and updated developer docs. Key achievements (top 5): 1) Calendar Date Handling Enhancements in marketplace-sdk: endOfDay usage, improved expiration date selection, and date formatting updates. Commits include b3235b87481a0f119005fb9a263750cf5a1d2513; 17a9545e0a22868ac290b76b52834b04d64e96d7; 2cc3af94f2ffa9b84bddefcb6522fbc9b43bab0a; 5a48a93576f31d3f22f2090f51361f7d6742ab9d. 2) Calendar UI Styling Enhancements and Bug Fixes: fixed missing calendar styles and introduced autogenerated/centralized styling for consistency. Commits include 6369b869c06fec6ef589d582d51433e534d70a04; 7066e5fe5cfd27ea7497de6f83543858682a8209; 20d53bbc3644b1e21109294e02224f8ae832872d; 876da2fe094374222b97879e53429ece35a16021. 3) Market Data and Listing Improvements: added useListItemsOrdersForCollectionPaginated, fixed initialPageParam (params.page), and integrated active listings/offers currencies API with tests/mocks. Commits include 753057894dbb44cf96e815f84f5e6d005eaec792; 8e7ad58655e570f8dcd957a9f914fc2cda8d38e4; 8330a4cf84c2c090659b480c878d85cc6059e642; 6c6ebd6abd456c44ad9b5e501b8d85f79363d685; 81b9816e19901e7bf391bb6bceaf9d749b89ac1d. 4) Royalty/Pricing UX Enhancements: Royalty fee calculations, OpenSea decimal validation, and improved PriceInput/MakeOfferModal UX. Commits include 1c777be33997d3ec6f038f15fd92c7ee3b15346c; 26e16146a7835b2b23dbeb8edb901641db734dd3; c7b115bad0c0a1d5d56456515013e1668fbefb09; d4c180032f35c6a9f278ed03b78d1743f7e43a21; ea96dd97cd2f69fd6649f7bab44ead0087ad29ee; eaa8e6656b503190fa729909d528801ab3fff834. 5) Quality, Maintenance, and CI Hygiene: LAOS cleanup, changesets, biome-check, lint fixes, and documentation URL updates to improve stability and developer experience. Commits include 85a0cdace181f10a51116f2bbd326ab6f501e8cf; 981e60f51cb7cb53fabf9a69afea8d5678b0e332; bc687db575b68fc203331eb9a14562e286f9b5ae; 889a0d0842af6badf0a5014bfb1238a44e1076a7; 52b8b63e83f9b901122600b3b4552f9bc33fd197; 3336e372146cb60c81fc2d4b077cee4c3c82a03e; 851a46acc15f869e41a221346bbc090e5837d3fa; c52cff3798ee550c5260d72429792381eda33bb7; 6eef143a63dfdbc9a41308480735a238376b9409. Technologies/skills demonstrated: - date-fns endOfDay usage, OpenSea validations, and dnum integration for monetary calculations. - TypeScript React hooks and component refactors (TimeSelector, PriceInput, MakeOfferModal). - Changesets and CI hygiene; automated styling (autogenerated styles.ts) and centralized CSS organization. - API design and data fetching patterns for paginated queries and currency filtering; mocks and tests for market data APIs. - Documentation maintenance and developer experience improvements.

September 2025

57 Commits • 25 Features

Sep 1, 2025

September 2025 monthly summary for 0xsequence development across docs, marketplace-sdk, and web-sdk. Focused on delivering business value through comprehensive documentation, feature-rich marketplace capabilities, UI/UX refinements, and robust error handling. Highlights include documentation enhancements for Marketplace SDK hooks, major refactors to listing and filtering features, API URL and provider architecture improvements, and a set of reliability and QA fixes across modals, tests, and CI tooling.

August 2025

89 Commits • 39 Features

Aug 1, 2025

August 2025: Delivered major platform improvements to the marketplace-sdk and docs with a focus on scalable search, listing, and data quality. Key features include pagination-enabled token supplies and metadata search with onlyMinted filtering and migration from deprecated search hooks; introduction of ERC721ShopCard data hook for sale details; dynamic pagination for primary sale items; UI and data-model enhancements for tradable vs non-tradable items; and broad refactors to improve performance and maintainability. Dense code hygiene work accompanied by tests/snapshots updates and release tooling. Overall impact: richer search, faster data loading for listings, more robust handling of tradable/non-tradable assets, and a solid foundation for scalable growth. Technologies/skills demonstrated: TypeScript, React hooks, advanced data fetching patterns, query-key management, modular UI/component design, and release engineering (changesets, tests, docs).

July 2025

81 Commits • 28 Features

Jul 1, 2025

July 2025 monthly summary for 0xsequence/marketplace-sdk: Delivered a cohesive UI/storybook and data-stability package with multiple UI and data-flow enhancements. Implemented Storybook stories and interaction tests for Pill components, marketplace logos, and CustomSelect; refactored Media to use containerClassName and deprecated className; integrated Tailwind/PostCSS with a dark-default theme; added MSW-powered API mocking in Storybook; introduced changeset tracking; and scaffolded provider wiring for future Wagmi/QueryClient usage. Major reliability and performance improvements include replacing useInfiniteQuery with useQuery for primary sale items count, refining query options and invalidation, fixing critical UI/test failures, and improving WaaS UX and loading states.

June 2025

131 Commits • 50 Features

Jun 1, 2025

June 2025 — 0xsequence/marketplace-sdk delivered a set of business-critical features, reliability improvements, and UI/data-layer refinements that strengthen multi-marketplace support, accelerate time-to-value for customers, and improve developer experience. Highlights include a robust Marketplace core configuration and provider model with safer overrides and improved error handling; expanded data layer and query capabilities to support SHOP and Laos721, plus sale-related hooks and improved caching; comprehensive UI/component modernization with shared media, marketplace card types, and a more flexible ActionButton (including marketplace type and sales contract support); marketplace configuration integration across inventory and collectibles so marketplaceConfig is consistently used for fetchInventory/fetchCollectibles; and routing/UI overhauls enabling cleaner navigation and dynamic chainId routes. In parallel, testing, type-safety, and release tooling improvements were shipped to improve stability and CI reliability.

May 2025

63 Commits • 24 Features

May 1, 2025

May 2025 performance summary: Delivered major enhancements to the marketplace SDK, focusing on richer asset presentation, robust checkout, and cross-project consistency. Key outcomes include 3D model support for CollectibleAsset with lazy-loaded ModelViewer, a renamed and streamlined Media layer, comprehensive quantity and pricing improvements in BuyModal and ERC721/ERC1155 flows, and broad dependency and design-system updates that improve maintainability and reliability across repositories. These efforts improved user experience, reduced runtime errors, and positioned the platform for scalable asset types and more sophisticated pricing models.

April 2025

120 Commits • 48 Features

Apr 1, 2025

Apr 2025 performance summary for 0xsequence/marketplace-sdk: Focused on delivering WaaS-enabled pricing and modal experiences to improve UX and business value, while strengthening reliability through test infrastructure and code quality improvements. Key architectural work includes cross-modal WaaS fee orchestration, wallet-kind aware transaction generation, and UI polish across core modals, enabled by a robust test harness.

March 2025

187 Commits • 68 Features

Mar 1, 2025

March 2025 saw a set of targeted improvements to pricing accuracy, error handling, test coverage, and UI performance within 0xsequence/marketplace-sdk. The team delivered pricing formatting enhancements and a dedicated utility for consistent currency formatting, solidified marketplace-fee calculations across listing and 1155 modals, and introduced robust error handling utilities. Strengthened test infrastructure included SSR/client wallet tests and BigInt support in mocks, while performance and UX received attention with a virtualized infinite scroll for the collectible grid and loading skeletons for collectible images. These changes reduce pricing errors, improve reliability, and accelerate safe iteration for business-facing features.

February 2025

147 Commits • 58 Features

Feb 1, 2025

February 2025 performance snapshot: - Strengthened the Marketplace SDK by hardening configuration handling, default behavior, and validation, improving reliability and security for production integrations. The team also improved user-facing UX and expanded end-to-end test coverage to reduce regression risk and accelerate release readiness. - Delivered robust defaults and error handling to prevent misconfig and onboarding friction, and provided clear feedback when user actions encounter missing data or errors. This reduces support overhead and shortens time-to-value for customers. - Built out testing infrastructure to support reliable, scalable development, including MSW-based mocks, test utilities, and mock handlers for market/Indexer APIs, enabling faster, safer iteration across critical flows.

January 2025

210 Commits • 79 Features

Jan 1, 2025

January 2025 monthly performance summary for 0xsequence/marketplace-sdk. Focused on delivering user-centric feature improvements, robust transaction flows, and architectural improvements to support reliability, maintainability, and business value. The month culminated in visible UX gains for fee handling and transaction status feedback, coupled with typing safety upgrades and expanded testing coverage to reduce risk in production.

December 2024

69 Commits • 32 Features

Dec 1, 2024

December 2024 performance snapshot for 0xsequence/marketplace-sdk focused on delivering high-value user-facing features, stabilizing the buy flow, and laying groundwork for scalable UI customization. Key work spanned feature delivery for the buy flow, UI component integrations, currency handling enhancements, and build-quality improvements, while addressing critical UI/UX bugs and reliability issues.

November 2024

69 Commits • 19 Features

Nov 1, 2024

November 2024 monthly summary for 0xsequence/marketplace-sdk. Delivered pricing, listing, transfer, and data fetching improvements; refactored callbacks/modals; performance and quality improvements; UI components; branding updates; all aimed at increasing pricing accuracy, listing conversions, and developer experience.

Activity

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Quality Metrics

Correctness91.8%
Maintainability91.6%
Architecture88.2%
Performance87.2%
AI Usage23.2%

Skills & Technologies

Programming Languages

CSSHTMLJSONJSXJavaScriptMarkdownReactShellTSXTypeScript

Technical Skills

ABI DefinitionAPI Client GenerationAPI DefinitionAPI DesignAPI DevelopmentAPI GenerationAPI IntegrationAPI MockingAPI TestingAccessibilityAsset ManagementAsynchronous ProgrammingBackend DevelopmentBackward CompatibilityBigInt

Repositories Contributed To

3 repos

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

0xsequence/marketplace-sdk

Nov 2024 Oct 2025
12 Months active

Languages Used

CSSJavaScriptReactTypeScriptyamlYAMLHTMLJSON

Technical Skills

API DesignAPI IntegrationAsset ManagementAsynchronous ProgrammingBlockchainCSS Styling

0xsequence/docs

Aug 2025 Sep 2025
2 Months active

Languages Used

JavaScriptMarkdownTypeScriptHTML

Technical Skills

Component DesignDocumentationReactSDK DevelopmentSDK IntegrationWeb Development

0xsequence/web-sdk

Sep 2025 Oct 2025
2 Months active

Languages Used

JavaScriptTypeScript

Technical Skills

Frontend DevelopmentReact HooksCode LinkingCode MaintenanceDocumentationDocumentation Update

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