Mar 2021 – Nov 2022 · 1 yr 8 mos · Noida, Uttar Pradesh, India

• Designed and implemented highly scalable, fault tolerant backend architecture for Paytm Merchant Analytics Dashboard serving payment analytics of 600M active users to 7.8M merchants.
• Lead the complete rewrite of rollup jobs with the help of latest technologies like Apache Kafka, Spark (Java), Hudi, Nifi, Spring Boot having a daily ingestion volume of over 1 TB.
• Contributed in rewriting new data architecture leading to reduction in infrastructure costs by 60% (or $8k/month) and reduced API response times by over 80%, by partitioning elastic search indices and moving data in and out of Hot (ES) and Cold (S3) storages.

Jan 2019 – Mar 2021 · 2 yrs 2 mos · Gurgaon, Haryana, India

• o Developed and maintained workflows for APIs, Cron Jobs of modules like Patient, Lab, Radiology based on functional specification documents with timely deliveries.
• o Solutioning and design of radiology and laboratory workflows involving multiple systems and technologies such as PACS, Mirth, HL7 message, FHIR etc.
• o Documented technical specifications, functional and non functional aspects with sequence, ER, activity
• diagrams.
• o Initiated creation and maintenance of a company wide developer’s guide with the aim of bringing all the developers on the same page, sharing knowledge across teams and better bootcamps for new team members.
• o Optimized performance of the Radiology and Lab cron jobs (from 2365ms to 669ms) and APIs by adding database indexes, saving regex queries, avoiding string concatenation in logs, modifying code structure, using projections and saving BO to DO transformations enabling processing of 80,000 hl7 messages in a day.

Nov 2018 – Jan 2019 · 2 mos

• Built cat percentile predictor, automated essay scoring, Machine Learning course material

Dec 2017 – Jan 2018 · 1 mo · Gurgaon, India

• Built Single page web apps :
• 1. An app which is capable of fetching various information regarding different servers.
• 2. An app that can change logging level and append loggers on the fly.

Jun 2017 – Jul 2017 · 1 mo · Faridabad Area, India

• Developed a Search Engine using Latent Semantic Analysis with Autocomplete, Spelling Correction, Synonym Fetch using Various Word Embeddings and phrase query features. Built a Rest-Api of the project before submission and testing by the Eli Medical Coders.