Sailesh Mittal
Founding Senior Engineer at NetSpring
New Delhi, Delhi, India
Summary
🤩
Rockstar🎓
Top SchoolSailesh Mittal is a founding senior engineer with 14 years of experience building scalable distributed systems and developer-facing features from startup stages to large tech firms. He cut his teeth on stream processing at Twitter, contributing to Apache Heron’s core and tracker components to preserve backward compatibility and improve UI/UX for job management and downloads. At LinkedIn and later founding NetSpring, he has blended backend engineering with product-focused delivery, shipping reliable integrations and configuration improvements in production systems. His background includes a Masters in Computer Science (Stony Brook) and early mobile architecture work on iOS, giving him a broad full‑stack perspective. Notably, he combines deep systems knowledge with practical attention to backward compatibility and operational usability—an engineer who prioritizes both scalability and the developer experience.
14 years of coding experience
9 years of employment as a software developer
Bachelor of Engineering (BE), Computer Engineering, Bachelor of Engineering (BE), Computer Engineering at Delhi College of EngineeringMaster of Science (MS), Computer Science, Master of Science (MS), Computer Science at State University of New York at Stony Brook
Github Skills (10)
heron10
back-end-development10
python10
streaming10
yaml9
tornado9
configuration-management9
uid8
front-end-development8
ui-design8
Programming languages (1)
Github contributions (5)
apache/incubator-heron
Dec 2015 - May 2016
Apache Heron (Incubating) is a realtime, distributed, fault-tolerant stream processing engine from Twitter
Role in this project:
Back-end Developer
Back-end DeveloperContributions:116 commits, 10 PRs, 4 pushes in 5 months
Contributions summary:Sailesh contributed to the core functionality of the Heron streaming engine, focusing on backward compatibility and enhancements for the tracker component. They modified Python utility scripts to handle execution state conversions, ensuring compatibility with older versions. The user also worked on UI-related changes, including file download functionality and the integration of job links within the UI. Further work included adding a verbose option for the tracker, and improving the configuration handling.
fault-tolerantrealtimedata-streamfaultstream
saileshmittal/vimified
Jun 2016 - Mar 2022
Contributions:5 pushes in 5 years 10 months
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