enjin/indexer
May 2025 – Jun 2026
14 Months active
Languages Used
TypeScriptgraphqltypescriptGraphQLJavaScriptSQLYAMLJSON
Technical Skills
API IntegrationBackend Developmentbackend developmentdatabase schema managementgraphqlAPI Development
Zouheir Layine
PROFILE
Zouheir Layine
Over 14 months, contributed to the enjin/indexer repository by building and maintaining core indexing, marketplace, and analytics features for blockchain-based NFT and token data. Leveraged TypeScript, GraphQL, and Node.js to deliver robust data synchronization, metadata management, and event-driven workflows, focusing on reliability, traceability, and operational resilience. Implemented cross-chain asset transfer support, advanced marketplace listing logic, and comprehensive account and pool statistics modules. Addressed data integrity and performance through schema evolution, job orchestration, and database optimization. Enhanced security and observability while supporting evolving blockchain protocols, enabling accurate analytics, improved user experience, and maintainable infrastructure for production-scale blockchain applications.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
239Total
Bugs
83
Commits
239
Features
82
Lines of code
3,187,686
Activity Months14
Your Network
8 peopleSame Organization
@enjin.io3
Shared Repositories
5
Work History
June 2026
14 Commits • 8 Features
Jun 1, 2026June 2026 monthly summary for enjin/indexer: Delivered core data synchronization and metadata reliability improvements that strengthen indexing latency and accuracy across NFT data and chain information. The month focused on implementing critical features and stabilizing the data pipeline while laying groundwork for cross-chain capabilities and lifecycle management.
14 Commits • 8 Features
Jun 1, 2026June 2026 monthly summary for enjin/indexer: Delivered core data synchronization and metadata reliability improvements that strengthen indexing latency and accuracy across NFT data and chain information. The month focused on implementing critical features and stabilizing the data pipeline while laying groundwork for cross-chain capabilities and lifecycle management.
June 2026
May 2026
14 Commits • 7 Features
May 1, 2026May 2026 was focused on delivering robust data integrity, accurate marketplace computations, and strengthened security for the enjin/indexer repository. Delivered five key features with targeted fixes to improve traceability, reliability, and user experience, while stabilizing tooling and processes for production readiness. Key achievements: - Marketplace Best Listing Improvements: improved accuracy of best listing computation and royalty checks after various auction/listing events, with commits leading the fixes ([NFTIO-3792] fix token best listing and [NFTIO-3792] fix best listing query) to ensure fair, transparent listings and correct royalty handling. - Extrinsics and Blocks Linkage and Backfill: established relationship between extrinsics and blocks and enabled backfilling of existing extrinsic records for enhanced transaction traceability (commits adding block-to-extrinsic linkage and backfill). - Token Groups and Metadata Management: enhanced token group handling, robust attribute setting, support for pending collection transfers, and expanded social metadata for collections, enabling richer, more controllable collection data (commits fixing token group attributes, adding collection transfer, and social metadata). - Bonded Value Calculation and Synchronization: fixed bonded value calculation and introduced a synchronization job to keep nominated pool values up-to-date (commit for member bonded fix and sync job). - Enhanced Metadata Refresh Capabilities: added force refresh, process-all-tokens, and trait handling options to metadata refresh for finer-grained control (commit adding metadata refresh options). Impact and business value: - Higher reliability and trust in marketplace listings through accurate best listing and royalties. - Improved traceability of blockchain transactions via explicit block-extrinsic linkage and backfills. - Richer, more controllable metadata and token group management enabling better collection governance and social presence. - Safer, automated consistency for bonded values in nomination pools, reducing reconciliation risk. - More flexible metadata refresh workflows improving operability and response to data changes. Technologies and skills demonstrated: - Data modeling and migrations, ETL/backfill strategies, and relation mapping across blockchain events (extrinsics/blocks). - Job orchestration and scheduling for synchronized calculations (bonded value sync). - Security hardening through API key protection for processors. - Metadata processing, social metadata handling, and feature flag-like capability expansions. - CI/CD tooling stability and dependency management to maintain production reliability.
May 2026
14 Commits • 7 Features
May 1, 2026May 2026 was focused on delivering robust data integrity, accurate marketplace computations, and strengthened security for the enjin/indexer repository. Delivered five key features with targeted fixes to improve traceability, reliability, and user experience, while stabilizing tooling and processes for production readiness. Key achievements: - Marketplace Best Listing Improvements: improved accuracy of best listing computation and royalty checks after various auction/listing events, with commits leading the fixes ([NFTIO-3792] fix token best listing and [NFTIO-3792] fix best listing query) to ensure fair, transparent listings and correct royalty handling. - Extrinsics and Blocks Linkage and Backfill: established relationship between extrinsics and blocks and enabled backfilling of existing extrinsic records for enhanced transaction traceability (commits adding block-to-extrinsic linkage and backfill). - Token Groups and Metadata Management: enhanced token group handling, robust attribute setting, support for pending collection transfers, and expanded social metadata for collections, enabling richer, more controllable collection data (commits fixing token group attributes, adding collection transfer, and social metadata). - Bonded Value Calculation and Synchronization: fixed bonded value calculation and introduced a synchronization job to keep nominated pool values up-to-date (commit for member bonded fix and sync job). - Enhanced Metadata Refresh Capabilities: added force refresh, process-all-tokens, and trait handling options to metadata refresh for finer-grained control (commit adding metadata refresh options). Impact and business value: - Higher reliability and trust in marketplace listings through accurate best listing and royalties. - Improved traceability of blockchain transactions via explicit block-extrinsic linkage and backfills. - Richer, more controllable metadata and token group management enabling better collection governance and social presence. - Safer, automated consistency for bonded values in nomination pools, reducing reconciliation risk. - More flexible metadata refresh workflows improving operability and response to data changes. Technologies and skills demonstrated: - Data modeling and migrations, ETL/backfill strategies, and relation mapping across blockchain events (extrinsics/blocks). - Job orchestration and scheduling for synchronized calculations (bonded value sync). - Security hardening through API key protection for processors. - Metadata processing, social metadata handling, and feature flag-like capability expansions. - CI/CD tooling stability and dependency management to maintain production reliability.
April 2026
2 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for enjin/indexer: Delivered reliability and analytics improvements. Key changes included removing a listing-state check and introducing a deliberate metadata computation delay to stabilize NFT marketplace operations, and adding a Chain Statistics Analytics Query to compute average block delays and related metrics over a configurable lookback period. These changes improved latency, data reliability, and visibility into blockchain performance, delivering business value and empowering data-driven decisions.
2 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for enjin/indexer: Delivered reliability and analytics improvements. Key changes included removing a listing-state check and introducing a deliberate metadata computation delay to stabilize NFT marketplace operations, and adding a Chain Statistics Analytics Query to compute average block delays and related metrics over a configurable lookback period. These changes improved latency, data reliability, and visibility into blockchain performance, delivering business value and empowering data-driven decisions.
April 2026
March 2026
28 Commits • 11 Features
Mar 1, 2026March 2026 – enjin/indexer: Focused on expanding NFT metadata capabilities, hardening the indexing pipeline, and enabling new marketplace features. The work improved metadata accuracy, data integrity, and operational reliability, directly supporting business goals around trust, search quality, and speed to market.
March 2026
28 Commits • 11 Features
Mar 1, 2026March 2026 – enjin/indexer: Focused on expanding NFT metadata capabilities, hardening the indexing pipeline, and enabling new marketplace features. The work improved metadata accuracy, data integrity, and operational reliability, directly supporting business goals around trust, search quality, and speed to market.
February 2026
13 Commits • 6 Features
Feb 1, 2026February 2026 (2026-02) delivered a focused set of reliability, performance, and usability improvements across the enjin/indexer workspace, with a strong emphasis on NFT processing reliability, inventory visibility, and observability. Implementations included stabilizing the NFT processing worker with progress reporting, enabling batch minting, introducing infusion tracking, expanding listing/search capabilities, and enhancing metadata and observability to support scalable growth.
13 Commits • 6 Features
Feb 1, 2026February 2026 (2026-02) delivered a focused set of reliability, performance, and usability improvements across the enjin/indexer workspace, with a strong emphasis on NFT processing reliability, inventory visibility, and observability. Implementations included stabilizing the NFT processing worker with progress reporting, enabling batch minting, introducing infusion tracking, expanding listing/search capabilities, and enhancing metadata and observability to support scalable growth.
February 2026
January 2026
18 Commits • 5 Features
Jan 1, 2026January 2026 (2026-01) focused on delivering robust metadata and token group capabilities, strengthening marketplace lifecycle, expanding token creation visibility, and hardening security and reliability across the enjin/indexer stack. The month balanced feature delivery with hardening work to improve data integrity, user experience, and operational resilience.
January 2026
18 Commits • 5 Features
Jan 1, 2026January 2026 (2026-01) focused on delivering robust metadata and token group capabilities, strengthening marketplace lifecycle, expanding token creation visibility, and hardening security and reliability across the enjin/indexer stack. The month balanced feature delivery with hardening work to improve data integrity, user experience, and operational resilience.
December 2025
2 Commits • 2 Features
Dec 1, 2025December 2025 — enjin/indexer delivered robust schema evolution and cross-chain reward decoding upgrades, delivering business value through improved data integrity, compatibility, and analytics reliability. Highlights include making AccountStats.totalInfused optional to support undefined metrics, and upgrading reward decoding for Relaychain 1062 and Matrixchain 1031 with updated reward era logic and improved event handling. These changes reduce downstream errors and prepare the system for upcoming chain structure changes.
2 Commits • 2 Features
Dec 1, 2025December 2025 — enjin/indexer delivered robust schema evolution and cross-chain reward decoding upgrades, delivering business value through improved data integrity, compatibility, and analytics reliability. Highlights include making AccountStats.totalInfused optional to support undefined metrics, and upgrading reward decoding for Relaychain 1062 and Matrixchain 1031 with updated reward era logic and improved event handling. These changes reduce downstream errors and prepare the system for upcoming chain structure changes.
December 2025
November 2025
15 Commits • 5 Features
Nov 1, 2025November 2025 monthly summary for enjin/indexer focused on delivering robust indexer and minting improvements, richer token data handling, enhanced search capabilities, clearer business analytics, and upgraded claims processing, all while fortifying reliability and compatibility across systems.
November 2025
15 Commits • 5 Features
Nov 1, 2025November 2025 monthly summary for enjin/indexer focused on delivering robust indexer and minting improvements, richer token data handling, enhanced search capabilities, clearer business analytics, and upgraded claims processing, all while fortifying reliability and compatibility across systems.
October 2025
14 Commits • 4 Features
Oct 1, 20252025-10 Monthly Summary for enjin/indexer: Delivered key feature enhancements, reliability improvements, and data quality fixes across account statistics, metadata processing, pricing, and event processing. Focused on business value by improving financial visibility, valuation accuracy, and data integrity in indexer workflows and validator insights. Highlights include tokensValue integration in AccountStats, metadata synchronization improvements via SYNC_METADATA, more accurate NFT floor price calculations by excluding expired listings, robust event deduplication with position-based fork detection, and enhanced validator staking insights.
14 Commits • 4 Features
Oct 1, 20252025-10 Monthly Summary for enjin/indexer: Delivered key feature enhancements, reliability improvements, and data quality fixes across account statistics, metadata processing, pricing, and event processing. Focused on business value by improving financial visibility, valuation accuracy, and data integrity in indexer workflows and validator insights. Highlights include tokensValue integration in AccountStats, metadata synchronization improvements via SYNC_METADATA, more accurate NFT floor price calculations by excluding expired listings, robust event deduplication with position-based fork detection, and enhanced validator staking insights.
October 2025
September 2025
22 Commits • 9 Features
Sep 1, 2025September 2025 — Focused on reliability, performance, and data fidelity across enjin/indexer. Key features shipped and major bugs fixed led to improved pool stability, richer observability, faster queries, and deeper token-group analytics. The team delivered stability and event fixes for NFTIO pools, enhanced SNS event handling and logging, and a hardened best pool query with related improvements. Token Groups migrations and creation metadata were added (created_at) along with token group positioning fixes, enabling accurate lineage and smoother migrations. The account statistics module and added cached id delivered tangible performance gains and better operational visibility. Additional enhancements included runtime matrix updates, dependency refreshes, and UI padding for improved maintainability and user experience. Overall impact: smoother user experience, more accurate metrics, faster data access, and stronger foundations for future features.
September 2025
22 Commits • 9 Features
Sep 1, 2025September 2025 — Focused on reliability, performance, and data fidelity across enjin/indexer. Key features shipped and major bugs fixed led to improved pool stability, richer observability, faster queries, and deeper token-group analytics. The team delivered stability and event fixes for NFTIO pools, enhanced SNS event handling and logging, and a hardened best pool query with related improvements. Token Groups migrations and creation metadata were added (created_at) along with token group positioning fixes, enabling accurate lineage and smoother migrations. The account statistics module and added cached id delivered tangible performance gains and better operational visibility. Additional enhancements included runtime matrix updates, dependency refreshes, and UI padding for improved maintainability and user experience. Overall impact: smoother user experience, more accurate metrics, faster data access, and stronger foundations for future features.
August 2025
38 Commits • 8 Features
Aug 1, 2025August 2025 – enjin/indexer: Delivered key features, fixed critical issues, and improved data integrity and reporting. Focused on high-value capabilities for listing management, token organization, pool/events visibility, and cross-system reliability. Achieved better governance metrics and developer productivity through targeted code quality improvements and clearer data pipelines.
38 Commits • 8 Features
Aug 1, 2025August 2025 – enjin/indexer: Delivered key features, fixed critical issues, and improved data integrity and reporting. Focused on high-value capabilities for listing management, token organization, pool/events visibility, and cross-system reliability. Achieved better governance metrics and developer productivity through targeted code quality improvements and clearer data pipelines.
August 2025
July 2025
24 Commits • 5 Features
Jul 1, 2025July 2025 (2025-07) — enjin/indexer focused on stabilizing reward calculations, expanding staking workflows, and strengthening nomination pool/event data handling, while fortifying deployment stability. This combination delivered measurable business value through more accurate rewards, improved user visibility, and a more maintainable codebase.
July 2025
24 Commits • 5 Features
Jul 1, 2025July 2025 (2025-07) — enjin/indexer focused on stabilizing reward calculations, expanding staking workflows, and strengthening nomination pool/event data handling, while fortifying deployment stability. This combination delivered measurable business value through more accurate rewards, improved user visibility, and a more maintainable codebase.
June 2025
33 Commits • 11 Features
Jun 1, 2025June 2025: Indexer sprint delivering core data synchronization, transfer workflows, and metadata accuracy across enjin/indexer. Implemented end-to-end collection transfer sync, token synchronization with cap fixes, universal account sync, rarity/metadata synchronization, and chain data fetching. Also introduced refresh capabilities for listings to maintain up-to-date market data, while stabilizing the indexing pipeline through targeted bug fixes and cleanups.
33 Commits • 11 Features
Jun 1, 2025June 2025: Indexer sprint delivering core data synchronization, transfer workflows, and metadata accuracy across enjin/indexer. Implemented end-to-end collection transfer sync, token synchronization with cap fixes, universal account sync, rarity/metadata synchronization, and chain data fetching. Also introduced refresh capabilities for listings to maintain up-to-date market data, while stabilizing the indexing pipeline through targeted bug fixes and cleanups.
June 2025
May 2025
2 Commits
May 1, 2025May 2025 monthly summary for enjin/indexer focused on stabilizing data integrity and relationship consistency in the indexing pipeline. Delivered two targeted bug fixes that improve data correctness and downstream reliability, with clear traceability to issues PLA-2261 and MICRO-83. The work reduces data anomalies in fuel-tanks data ingestion and prevents duplicate attribute relationships, strengthening overall data quality for analytics and reporting.
May 2025
2 Commits
May 1, 2025May 2025 monthly summary for enjin/indexer focused on stabilizing data integrity and relationship consistency in the indexing pipeline. Delivered two targeted bug fixes that improve data correctness and downstream reliability, with clear traceability to issues PLA-2261 and MICRO-83. The work reduces data anomalies in fuel-tanks data ingestion and prevents duplicate attribute relationships, strengthening overall data quality for analytics and reporting.
Activity
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Quality Metrics
Correctness84.2%
Maintainability82.2%
Architecture79.6%
Performance78.6%
AI Usage24.4%
Skills & Technologies
Programming Languages
DockerfileGraphQLJSONJavaScriptSQLTypeScriptYAMLgraphqltypescript
Technical Skills
API DevelopmentAPI IntegrationAPI developmentAPI integrationAWSAWS ECRAWS SDKAsynchronous ProgrammingBackend DevelopmentBlockchainBlockchain DevelopmentBuild FixesCI/CDCachingCode Organization
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline