
Gaurav Kohli
Software Developer
Since 2006, Gaurav's worked in software development as a developer, DevOps, scrum master, senior consultant, and product owner, and in those years, he's worked in a number of different domains such as eCommerce, travel, and online advertisement. While working at Booking.com, he managed the ticketing back-end system for our customer service executives (it's used to handle phone calls and emails for their million-plus customers and partners).
Portfolio
Experience
Java - 10 yearsBig Data - 5 yearsSpring - 5 yearsAmazon Web Services (AWS) - 3 yearsGoogle Cloud Platform (GCP) - 3 yearsTerraform - 2 yearsKubernetes - 2 yearsAWS Certified Solution Architect - 1 yearAvailability
Preferred Environment
MacOS, Terminal, Git, IntelliJ IDEA, Java
The most amazing...
...thing I've done was to lead the migration of legacy ticketing system with no downtime—it now can handle million of customers on a daily basis.
Work Experience
DevOps Engineer
Fleetonomy.io
- Conducted optimization to reduce the cost of the production cluster by 50%.
- Designed and implemented the architecture for a disaster recovery cluster.
- Managed and supported the microservice architecture-based deployment on multiple cloud providers.
Senior Developer | Team Lead
Booking.com
- Led the general data protection regulation (GDPR) efforts for the customer service (CS) and tech/product departments.
- Identified challenges within the department and later worked with the product team in tackling them.
- Spearheaded data ownership and management within the department.
- Acted as the big data ambassador for the entire customer service department and coordinated the set up of a big data community within the customer service (CS) department.
- Supported and answered all data infrastructure related questions and topics.
- Guided different teams in the builds of reliable data pipelines.
- Evaluated possible solutions to replace Red Box recorders for voice tracks.
- Introduced Druid as a real-time OLAP engine to the department.
- Provided technical and commercial direction to team.
- Mentored team members in their craft and soft skills.
Development Team lead
Booking.com
- Managed the rollout of 2.0 version of Ticketing, a system where agents logged in their work.
- Took over the role of product owner for a while and led to the project of Ticketing.
- Facilitated a close collaboration between the agent routing and the Ticketing teams.
- Built a bridge between the analyst community and the developer who generated data for the CS department.
- Restructured the process of doing regular one-on-one meetings with team members.
- Headed the agent's workshop around Ticketing's phase 2.0 in order to understand how they used new flows.
- Automated many simple procedures followed by CS executives to speed up the issue handling.
- Worked with the CS forecasting team to build better forecasting models.
- Created a real-time data ticketing pipeline in Kafka to be consumed by an analyst and a data scientist.
- Explored Druid as a platform for a real-time ad-hoc analysis of CS data.
- Introduced Druid technology for a machine-learning-scaling track.
- Granted access to the open source community a Perl plugin for Druid.
- Facilitated the Druid adoption in the company while working with a business reporting team to get them started with Druid.
- Developed a CS inbound driver insightsdashboard in Druid.
- Was awarded a "Bloody Helpful" award within the CS department for three consecutive quarters.
Back-end Developer
eBuddy.com (Amsterdam)
- Developed an eBuddy XMS internet scale mobile messaging platform.
- Worked as part of a cross-functional Agile team, developing all aspects of the product.
- Researched upon various solution possibilities to a problem and then implemented it.
Senior Consultant
Xebia (Amsterdam)
- Conducted requirement gathering and interacted with the users.
- Developed custom Atlassian plugins in Jira/Confluence for team’s specific requirements.
- Consulted on Agile tool selection to help the product and operations teams get aligned with Scrum and Kanban.
- Advised and helped the sales and marketing teams to move their workflow management in Jira.
- Created and implemented upgrades and rollout plans for various Atlassian products.
- Evangelized various teams, in Gumtree (Australia), Kijiji (Italy), and Mobile.de (Germany), into using ECG’s Atlassian tool ecosystem.
Consultant | Scrum Master
Xebia (India)
- Built the back end, handling all of the data and enrichment processes.
- Designed and implemented user stories.
- Wrote unit and functional tests.
- Contributed to the planning, iteration kickoffs, and retrospectives.
- Coordinated the backlog creation and regular prioritization of stories in the backlog with the product owner.
Senior Developer
GlobalLogic
- Contributed to the creation of the entire Acteva application (three modules) on a J2EE stack which eventually replaced the old Acteva ColdFusion-based application.
- Developed a class module which included concepts such as instructor, training venue, and attachments.
- Built a report module for the generation of money-related event reports and the list of attendees.
- Created a refund module which handled the entire refund request made by the attendees of the event.
Developer
GlobalLogic
- Developed a reporting module for the transactional database of OpenAds.
- Built a generic report module for generating basic reports based on filters and parameters.
- Developed a forecasting module which included revenue and revenue forecasting of their campaigns.
- Created a module for generating unique user reports and CPM (cost per million) campaign tracker reports.
Experience
Perl Client for Druid.io
https://github.com/gauravkohli/DruidRules with Drools
https://www.slideshare.net/falcondot/rules-with-drools-9995827Data Engineering on the Google Cloud Platform
https://www.credential.net/4wt52jwtBreaking with Relational DBMS and Dating with Hbase

Zero Downtime Jenkins Continuous Deployment with Terraform on AWS
Skills
Languages
Java, Perl, JavaScript, SQL, Python, HTML
Frameworks
Spring, Mockito, Spring Security, Spring Boot, Bootstrap, Angular, Hadoop, Spark, JPA, Spring Integration, JUnit, Apache Struts 2, JSON Web Tokens (JWT), Apache Spark, Hibernate, Seam
Paradigms
DevOps, Test-driven Development (TDD), Kanban, Continuous Integration (CI), REST, Continuous Delivery (CD), Unit Testing, Agile Software Development, Clean Code
Platforms
Amazon Web Services (AWS), Docker, MacOS, Android, Kubernetes, Azure, Google Cloud Platform (GCP)
Storage
Apache Hive, Redis, Druid.io, MySQL, Elasticsearch, SQL CE
Libraries/APIs
Apache Lucene
Tools
Terminal, Servlet, Atlassian, Jira, Apache Tomcat, Helm, CircleCI, Ansible, Google Cloud Composer, Jenkins, Oozie, Apache Airflow, Cloud Dataflow, Google Cloud Dataproc, GitLab CI/CD, GitLab, GitHub, IntelliJ IDEA, Docker Hub, Git, Terraform
Other
Consul, Big Data, Progressive Web Applications (PWA), Streaming Data, Ajax, AWS DevOps, AWS Certified Solution Architect
Education
Bachelor's Degree in Computer Engineering
Indian Institute of Information Technology - Allahabad, India
Certifications
AWS SysOps Administrator — Associate
Amazon Web Services
AWS Developer Associate
Amazon Web Services
Google Cloud Certified — Associate Cloud Engineer
Google Cloud
AWS Solution Architect Associate
Amazon Web Services
DataStax Certified Cassandra Developer
DataStax