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Venkata Sai Krishna Gani.
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Software Engineer specializing in backend systems, data pipelines, and performance optimization using technologies like Go, Python, Spark, and cloud platforms. Currently building impactful tools at Walmart Global Tech.
01.About Me
Hello! I'm Sai Krishna, a software engineer passionate about tackling complex challenges and building efficient, scalable applications. My journey in tech has led me through developing high-performance backend services, optimizing large-scale data processing workflows, and architecting solutions that drive significant improvements.
I thrive in collaborative environments and enjoy leveraging my skills in Go, Python, SQL, and various data technologies (BigQuery, Spark, Kafka, Postgres) to deliver tangible results, whether it's reducing processing times, cutting costs, or enhancing user experience.
Currently at Walmart Global Tech, I contribute to key projects involving geospatial visualization, last-mile delivery insights, and zone optimization automation.
02.Where I've Worked
Software Engineer 3 @ Walmart Global Tech
Aug 2024 – Present
Project: Pixellate - Geospatial Visualization Platform
- Transformed platform to multi-user via session isolation/sync.
- Reduced report load times 60-70% using caching & gzip.
- Led scalable data source integration with Go interfaces & async processing.
Software Engineer 2 @ Walmart Global Tech
Jul 2022 – Aug 2024
Project: Dscribe - Last-Mile Delivery Insights
- Developed low-latency notification engine for 150K drivers.
- Engineered scalable ingestion pipeline (27M+ records daily).
- Implemented RBAC using internal SSO & Active Directory.
Software Engineer 2 @ Walmart Global Tech
Jul 2022 – Aug 2024
Project: Fencer - Zone Optimisation Automation
- Cut rezoning time from 3-4 days to 3 hours via automation.
- Integrated Jira/Airflow APIs for automated DAGs & tracking.
- Designed reusable connectors (BigQuery, GCS, PostgreSQL).
- Built middleware boosting API response speeds by 30%.
Software Engineer 2 @ Walmart Global Tech
Jul 2022 – Aug 2024
Other Contributions
- Spearheaded Spark ETL migration to Hudi, cutting costs ($1300->$300) & runtime (60->20 min).
- Led ETL pipeline dev for fraud detection (10M images, 500M records monthly).
Software Engineer Intern @ Kamtech Associates
Jun 2021 – Aug 2021
Project: Bidfast - Tender Automation
- Developed web app with multi-user support & file handling.
- Converted static pages to dynamic interfaces (jQuery/AJAX).
- Automated document generation using Python-docx.
03.Technologies
Languages
- Python
- Go
- Scala
- SQL
- JavaScript
- Bash
- C++
Frameworks & Tools
- FastAPI
- Gin
- Apache Spark
- Django
- gRPC
- Apache Airflow
- Docker
- Kubernetes
- Apache Kafka
- Postgres
- BigQuery
- Hudi
- GCP
04.Education
IIT Kharagpur
July 2017 – May 2022
Integrated Masters (5Y)
GPA: 7.2/10
Relevant Coursework:
- Programming and Data Structures
- Machine Learning Foundations and Applications
- Big Data Applications
05.Achievements
- [*]Received Bravo Award for managing critical data pipelines and optimizing them.
- [*]Awarded the Excellence Award, an annual team-level recognition for significant impact.
- [*]Secured an All India Rank 7320 (among 1.5M participants) in JEE ADVANCED 2017.
- [*]Secured a State Rank 1058 (among 1.5 lakh aspirants) in AP EAMCET 2017.