Snapchat/GiGL
Sep 2025 – Jan 2026
5 Months active
Languages Used
PythonSQLC++
Technical Skills
Distributed SystemsError HandlingGraph DatabasesPythonUnit TestingData Engineering
swong3-sc
PROFILE
Swong3-sc
Worked on the Snapchat/GiGL repository, delivering features and reliability improvements across distributed systems and data engineering workflows. Built and integrated LightGCN for homogeneous graphs, leveraging PyTorch and TorchRec to enable scalable, production-ready recommendations with distributed embeddings and comprehensive unit testing. Developed distributed model parallel tests to validate embedding sharding and gradient flow, and created data ingestion and preprocessing pipelines for the Gowalla dataset using Python and BigQuery, streamlining analytics and model readiness. Focused on code quality by fixing partitioning bugs and enhancing error handling, ensuring robust data integrity and maintainability throughout the distributed partitioning and graph data processing pipelines.
Overall Statistics
Feature vs Bugs
57%Features
Repository Contributions
7Total
Bugs
3
Commits
7
Features
4
Lines of code
1,637
Activity Months5
Your Network
25 peopleWork History
January 2026
1 Commits • 1 Features
Jan 1, 2026In January 2026, delivered the Gowalla Graph Data Preprocessor Config for Snapchat/GiGL, establishing node/edge schemas and preprocessing specifications to transform Gowalla edge data into ready-for-analysis user and item tables. This enables downstream analytics, profiling, and recommendations, reducing manual data prep and accelerating model-ready datasets. Commit fbea225e140c318f4741756f8ea445513751244d (co-authored-by: kmontemayor), aligning with PR #387.
1 Commits • 1 Features
Jan 1, 2026In January 2026, delivered the Gowalla Graph Data Preprocessor Config for Snapchat/GiGL, establishing node/edge schemas and preprocessing specifications to transform Gowalla edge data into ready-for-analysis user and item tables. This enables downstream analytics, profiling, and recommendations, reducing manual data prep and accelerating model-ready datasets. Commit fbea225e140c318f4741756f8ea445513751244d (co-authored-by: kmontemayor), aligning with PR #387.
January 2026
December 2025
1 Commits
Dec 1, 2025December 2025 — Snapchat/GiGL: Reliability-focused month centered on stabilizing the distributed partitioning workflow. No user-facing features released this month; the primary value came from a critical bug fix that ensures correct handling of node labels across distributed partitions, improving data correctness and system stability in production.
December 2025
1 Commits
Dec 1, 2025December 2025 — Snapchat/GiGL: Reliability-focused month centered on stabilizing the distributed partitioning workflow. No user-facing features released this month; the primary value came from a critical bug fix that ensures correct handling of node labels across distributed partitions, improving data correctness and system stability in production.
November 2025
2 Commits • 2 Features
Nov 1, 2025Concise monthly summary for 2025-11 focusing on business value and technical achievements in Snapchat/GiGL. Highlights include two key features delivered: (1) Distributed Model Parallel Testing for LightGCN, validating embedding sharding and gradient flow in a multi-process distributed setup; (2) Gowalla Dataset Ingestion Script for BigQuery, enabling efficient data management and analytics by converting Gowalla bipartite graph data into a BigQuery-friendly format. No major bugs fixed were recorded this month. Overall impact: improved reliability and scalability of distributed training workflows and streamlined data ingestion for analytics, driving faster decision-making and product insights. Technologies/skills demonstrated: distributed testing in multi-process environments, embedding sharding and gradient flow validation, Python scripting for data pipelines, BigQuery data loading and transformation, collaboration on model training infrastructure.
2 Commits • 2 Features
Nov 1, 2025Concise monthly summary for 2025-11 focusing on business value and technical achievements in Snapchat/GiGL. Highlights include two key features delivered: (1) Distributed Model Parallel Testing for LightGCN, validating embedding sharding and gradient flow in a multi-process distributed setup; (2) Gowalla Dataset Ingestion Script for BigQuery, enabling efficient data management and analytics by converting Gowalla bipartite graph data into a BigQuery-friendly format. No major bugs fixed were recorded this month. Overall impact: improved reliability and scalability of distributed training workflows and streamlined data ingestion for analytics, driving faster decision-making and product insights. Technologies/skills demonstrated: distributed testing in multi-process environments, embedding sharding and gradient flow validation, Python scripting for data pipelines, BigQuery data loading and transformation, collaboration on model training infrastructure.
November 2025
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for Snapchat/GiGL. Delivered LightGCN integration for homogeneous graphs within the GiGL library, enabling scalable, production-ready recommendations. The work includes TorchRec-based distributed ID embeddings, forward passes for training and inference, and a comprehensive unit-test suite to ensure correctness and compatibility with existing PyG implementations. This enhancement expands GiGL’s graph-model capabilities, improves deployment scalability, and strengthens alignment with the PyG ecosystem for easier adoption by data/ML teams.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for Snapchat/GiGL. Delivered LightGCN integration for homogeneous graphs within the GiGL library, enabling scalable, production-ready recommendations. The work includes TorchRec-based distributed ID embeddings, forward passes for training and inference, and a comprehensive unit-test suite to ensure correctness and compatibility with existing PyG implementations. This enhancement expands GiGL’s graph-model capabilities, improves deployment scalability, and strengthens alignment with the PyG ecosystem for easier adoption by data/ML teams.
September 2025
2 Commits
Sep 1, 2025September 2025: Focused on reliability and code quality for Snapchat/GiGL. Delivered two critical bug fixes that strengthen test suite readability and data-partition robustness, with no new features released this month.
2 Commits
Sep 1, 2025September 2025: Focused on reliability and code quality for Snapchat/GiGL. Delivered two critical bug fixes that strengthen test suite readability and data-partition robustness, with no new features released this month.
September 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability91.4%
Architecture97.2%
Performance91.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++PythonSQL
Technical Skills
API integrationBigQueryData EngineeringDeep LearningDistributed SystemsError HandlingGraph DatabasesGraph Neural NetworksMachine LearningPyTorchPythonPython programmingPython scriptingUnit Testingbigquery
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