Apr 2024 – Present · 1 yr 11 mos · Remote

• Exploring TSDB to its core :)
• Contributions : https://github.com/questdb/questdb/pulls?q=is%3Apr+author%3Asiddharth0815+is%3Aclosed

Jul 2021 – Jan 2025 · 3 yrs 6 mos

• ★ Statements And Extracts:
• ➔ Rearchitected statement generation as a data-streaming use case, leveraging Apache Flink and AWS Athena/Redshift.
• ➔ Horizontally scaled initial architecture to generate ~20M statements in 1 hour.
• ➔ Created multiple data pipelines using Apache Airflow for statement data aggregation.
• ➔ Built (ATH/Account/Account-Holder/Txn) extracts using DBT views, for post EOD reporting to banks/fintechs.
• ➔ Owned end-to-end delivery of collections extracts for reporting delinquent credit accounts.
• ★ Prepaid/Credit Account Product Management:
• ➔ Developed generic limits management microservice for prepaid/credit payment instruments.
• ➔ Integrated and developed Kubernetes operators, bringing down manual effort to 0 in tenant configurations.
• ➔ Increased TPS ~ 1000, decreased p99 for prepaid APIs from 600ms to ~100ms in the production environment.
• ➔ Debugged multiple production issues for legacy services built on the Akka framework.
• ➔ Adhered to SOLID principles, design patterns and TDD, and embraced concurrent and asynchronous paradigms.

Jul 2021 – Mar 2023 · 1 yr 8 mos

• ★ Sodexo-UK
• ➔ Handled backend development of the generic, scalable and extensible feeds service.
• ➔ Used publisher-subscriber model where various services can publish data on feeds.
• ➔ Developed analytics feature for tracking user engagement, and pinning/unpinning functionality for posts.
• ★ Sodexo-Spain
• ➔ Developed a microservice which works as a gateway for all card-based calls from Zeta to FIS.
• ➔ This microservice supported SOAP-based integration with FIS with the help of Apache-Axis libraries.
• ➔ Created a multi-tenant generic card order workflow using the Camunda Modeler.
• ➔ Integrated internal libraries for dynamic token generation for service-to-service calls.

Jan 2021 – Jul 2021 · 6 mos

• ➔ Implemented various paginating techniques namely Cursor and Offset Pagination for existing APIs
• ➔ Created Blocker-Bot which notifies via messages on Flock post assignment of blockers.

Jul 2020 – Sep 2020 · 2 mos · Greater Delhi Area · Remote

• ➔ Integrated APIs for extending services of loan provider fintech partners.
• ➔ Wrote multiple Python scripts for writing data in .csv, and .xlsx files from the database.

Apr 2020 – Jul 2020 · 3 mos · Lucknow, Uttar Pradesh, India

• Improving and reviewing technical content at Geeks for Geeks website.

Jun 2019 – Feb 2020 · 8 mos

• Studied and implemented various data structures and algorithms and wrote explanatory blogs on them.