Tushar Kesarwani

Backend Engineer

London, England, United Kingdom12 yrs 5 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Led modernization of Booking.com's data ecosystem.
Developed scalable self-service data integration platforms.
Awarded for innovative automation solutions.

Stackforce AI infers this person is a Fintech Data Engineering expert with strong cloud architecture skills.

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Skills

Core Skills

Data EngineeringCloud ArchitectureData GovernanceBig Data EngineeringEtl Development

Other Skills

AWSAWS GlueAWS LambdaAirflowAmazon DynamodbAmazon Elastic MapReduce (EMR)Amazon Web Services (AWS)Apache AirflowApache FlinkApache KafkaApache SparkApache Spark StreamingAutomationBig DataBig Data Analytics

About

Lead Data Engineer & Cloud Architect specialized in architecting cloud-native and cloud-agnostic solutions across on-premises and cloud platforms (AWS/GCP), with extensive experience in building scalable, data-intensive microservices and distributed systems. Passionate about developing modern data ecosystems focused on data quality, data governance, and architecture. Currently on a mission to modernize Booking.com’s on-premises Data Ecosystem to a modern, cloud-based environment, while leading and owning key pillars from the FinTech Business Unit, including Data Quality, Data Governance, and Data Ingestion to the cloud.

Experience

12 yrs 5 mos

Total Experience

3 yrs 1 mo

Average Tenure

5 yrs 5 mos

Current Experience

Booking.com

2 roles

Senior Data Engineer

Promoted

Feb 2024 – Present · 2 yrs 4 mos · London, England, United Kingdom

Lead Engineer and architect on Fintech’s modern Iceberg Data Lake on AWS with data
governance, and quality at the heart of it and bringing data-mesh experience by close
integration with Booking.com’s central data warehouse on Snowflake.
Led the modernisation of the on-prem data lake and migration to the cloud from Fintech BU.
Transitioned Fintech’s Payment reporting to a generic and scalable self-service Data
Integration Platform, which is now, the only platform to process key Payment Reports like
Charges, Refunds etc.
Won Hackathon 2024 to build automation using GPT LLM model to convert oozie workflows
into Airflow Dag, migrating 1000s of workflows and saving more than 1000 developer hours.
As the Data Engineering craft lead, I built the DE Hiring playbook and
interview questions. I interviewed more than 300 people, ensuring we hired the best talent.

AWSData GovernanceData QualityData LakeSnowflakeAirflow+2

Data Engineer

Jan 2021 – Feb 2024 · 3 yrs 1 mo · London, England, United Kingdom

Improving data ecosystem at Booking.com by building the cloud-agnostic data toolings, infrastructures and modern data-architecture.
Developed data-quality microservice, providing Timeliness, Accuracy, Completeness and
Correctness of Data SLI(s) for on-prem and cloud data assets across booking.com, improving
data quality and governance for petabytes of data.
Established the first data governance pillar at Booking.com after consulting Risk, Legal &
different business leads while closely working with CDO at Booking.com.
Built the team of 6 Code Archaeologists to build the SOX lineage across the company which
was a legal requirement and saved Booking.com 4 million USD in fines.

Data QualityData GovernanceCloud ArchitectureMicroservicesData Engineering

Publicis sapient

2 roles

Senior Associate Technology

Promoted

Apr 2018 – Dec 2020 · 2 yrs 8 mos

As a BigData Consultant, I worked with major clients from Fintech, Incurance and Mareking sector handling buiness of 100 million size and delivery manager for critical BigData projects.
Developed real-time and Batch spark applications to serve 26 million Llyods Bank Customers
processing 100 million transactions daily generating Push Mobile Notifications like Debit
Alerts, Weekly Spend Summary, Real-Time Debit, and Incoming alerts, etc.
Spearheading a team of 6 and owning the Credit Card pipelines serving 9 million credit card
customers with smart and intelligent push notifications.
Awarded client-focused delivery award for scaling Structured Streaming pipelines on Kafka
from 400 to 4000 transactions per sec.
Worked with Bank Product Owners, accurately analysing data from different internal source
systems, and providing scalable solutions accordingly.
Showing strong client relationship building skills. Managing clients and supporting business
needs as required.
Working in an agile scrum model Managing Scrum Boards, Planning sessions, Refinements, etc.

SparkKafkaBig DataReal-time ProcessingBig Data Engineering

Associate Technology

Apr 2016 – Mar 2018 · 1 yr 11 mos

Worked for ‘Search Enhancement’ for an E-Commerce Giant from US and Canada. Created spark pipelines to aggregate data provided from various sources, transform and ingest data into Solr. Explored Spark, Scala, Apache Solar, Hive, Scoop, GCP, AWS for the project.
Worked for Customer Data Platform, a customer data migration pipelines built with Google Cloud Services. Created spark pipelines to Extract data from various sources and built transformations using Apache Spark to record all user journey in Databases. The result data has been utilized to provide better user experience.
Was also involved in JATO-Speedwing; an automotive intelligence product. Involved in Developing the new model, a significant shift in paradigm with complex transformations. As well as transforming historical data, new data was generated in the old legacy systems and migrated in real-time to the new data model. Extensively used SQL Server, Talend ETL Tool, Informatica ETL Tool, SQL Transformations, Unix Scripting.

SparkGCPAWSETLData Engineering

Cognizant technology solutions

Programer Analyst

Mar 2014 – Mar 2016 · 2 yrs · Chennai Area, India

My role as a Programmer Analyst at Cognizant included variety of responsibilities from getting the high level requirements and converting them into an ETL model.
My Major influence was on ETL development with primary skills in Informatica and Unix Scripting.

InformaticaUnix ScriptingETL Development

Ribbun software pvt ltd

Software Developer

Jul 2013 – Dec 2013 · 5 mos

Ribbun is a web development startup. As a Software developer at ribbun, my responsibilities included interacting with the clients and converting the requirements into the robust web applications. My major influence was on PHP. SQL and UNIX.
As a startup, i was trained to grab new technologies on the go and get the things done as a team player.

PHPSQLUnix