Sanjay Das
Team-lead/ Architect with experience in Start-ups as well as Fortune-100 companies.
Managed small/ medium sized teams.
OpenAI/ LLM/ Smart-contracts enthusiast
Architected / built horizontally scalable Big-data platforms, distributed services.
Education
BITS, Pilani, India. M. Sc (Tech) Computer Science. First Class. (5 Year consolidated program)
Work Experience
Director - Data Engineering/ Team Lead: AdMarketplace, Oct, 2020 – now, New York
Create and Manage a Big-Data platform to provide access to Live/Historical Data to Internal/External Users/Systems via Dashboards/APIs, Anomaly Detection, Data Governance, Cloud Migration.
Work with business analysts and technology counterparts to accurately understand and translate business requirements
Manage including estimation, scheduling, milestone tracking verification, risk management and project status reporting.
Define the solution road-map. Manage the engineering teams' quality of delivery, mentor the technical team
Hire and manage the team to meet Data engineering principles and practices. Unite and lead geographically and technically disparate teams
Java/Scala/Python, Spark, Kafka, Databricks/ Snowflake, ElasticSearch/Clickhouse, Airflow, AWS, Tableau, ML-Ops
Consultant: Cigna/ CVS-Health, Oct, 2019 – Sep, 2020, New York / Remote
Developed, Deployed and Monitored a Big-Data platform to provide internal/external access to Med/Rx Claims
Handled high-volume data (100M Transactions), Throughput / Latency issues
Developed Python modules and enhanced Java Kafka-Connectors
Mentored Junior engineers, Code reviews
Kafka, Hadoop/Hive/Impala, CDC, Python, Spark, Docker/Kubernetes, Splunk, Git, Jenkins
Architect/Principal Software Engineer: ETrade, Apr, 2017 – Oct 2019, New Jersey / New York
Engineered a Big-Data platform to provide internal/external access to Transactions, Portfolios, Live/Historical Data, Customer Profile and Behavior
Handled near-live market-data and ingested event-stream from external vendor
Developed Java Kafka-KStream modules
Mentored junior engineers, Code reviews
Kafka, Kstream/KSQL, CDC, Cassandra, Oracle, Java 8, OpenShift, Prometheus, Git, Jenkins
Consultant/Architect/Developer: Jun, 2014 – Jan 2017, New Jersey / New York
Dun & Bradstreet, Designed and prototyped a new Big Data platform to ingest and process massive amounts of data (via event-driven Microservices) both in Batch and Streaming.(Spark, NoSQL, Kafka, Avro, Docker, Mesos and AWS / EMR, Git, Java 8)
Citi Bank, Designed, Developed solution for Ingestion and Processing of massive amounts of Batch Data from an external source. (Java 8, Spring Boot, Spring Batch, Spring Integration, PCF)
esPronto, Managed, Deployed and Maintained consumer facing Android / iOS Apps and Responsive-web Front-end. Lead high-functioning agile team with heavy emphasis on rapid deployment based on continuous customer feedback. Hired and Managed a team of 10 UX Designer, Engineers and Testers.(MongoDB / NoSQL, Redis, AWS),
Software Architect/Back-end Developer: Symphony Fintech, Apr, 2009 – Mar, 2014, New Jersey/India
Symphony provides on-line stock trading and back-testing solutions to professional traders.
Architected and Developed an on-line Stock Trading and cloud based Algo Trading System. Notable achievement - Each trader can spawn off an Amazon EC2 container with private access to Market Data Cloud, Virtual Exchange and suite of Algorithms.
I had multiple roles – Architect, Team-Lead, Back-end Developer, Implementation at Client-sites and Day-to-day troubleshooting for live deployments. (Java, Web-Services, AWS, Maven, Jenkins, JCache, MySQL, JSP / Servlets, WebSocket, Market Data Cloud, FIX Order Router)
Consultant: Investment Bank / Hedge-fund, New York, Mar, 2005 – Mar, 2009
Citi Bank, Consultant to an Investment Bank to gather business requirements and implement a Credit Derivative front office solution.. Followed up with the users to test the implementation and achieved sign-off towards go-live. (Java, Tibco)
Archeus Capital, Consultant to a Hedge-fund to develop the front-end for a trading platform based on a generic security model to support daily trading and hedging activities for both front/middle office handling a wide range of products. Mentored & handed over to Junior Staff. (Java, Flex)
Lead Developer: Morgan Stanley, New York, Jul, 2003 – Mar, 2005
Enhanced server-side of PassportWeb - a web based Equity/Futures/FX Trading platform.
Responsible for delivery, deployment, major performance optimizations (concurrency both via processes and threads), continuing enhancements and day to day issue resolution. (Java, Sybase)
Senior Technologist: Wit SoundView (Start-up Broker), New York, Apr, 1999 – Jun, 2001
Developed Vostock - a web-based continuous Auction System for Secondary stock offerings.
The customer-facing web-site entertained thousands of persistent (via applets) and HTML clients to participate in a live auction. The back-end was entirely developed in Java on NT platform and deployed on a Unix platform. Interfaced the Auction System with US Clearing Corp’s Order Execution System & ADP’s BPS Advantage. I was responsible for technical design decisions, scalability, deployment, stress testing, coordination with outside consultants and every other conceivable server-side technical issue. (C++, Java, JSP, Weblogic, Websphere, DB2)
Lead Developer (Consultant): Goldman Sachs, New Jersey, Sep, 1997 – Aug, 1999
Hired to architect next generation distributed real-time trade reporting system from multiple databases and setup an infrastructure for future Web-Based projects.
My achievements are: Came up with a basic underlying design that is highly scalable & portable. It can scale to multiple Web-Servers, multiple Application Servers and access multiple Data-Bases. Business objects running in Application servers can be interfaced with both web & non-web clients. (C++, Java, Weblogic, Informix, Solaris).