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Vivek Pal

@vivekpal3

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I build reliable payment, fraud prevention, and large-scale data systems.

India

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At Zeta, I build onboarding, rewards, and fraud-prevention systems for credit card customers. I designed a US credit card onboarding journey using a Decision Model & Notation-based framework and led the migration of Pixel Rewards to Tachyon Rewards.

I stabilized Tachyon Rewards after launch through data-driven reward computation delta analysis, bug triage, and architectural improvements to system accuracy. I also engineered a real-time fraud workflow with Temporal for two-way cardholder confirmation and modernized Android push notifications to Firebase v1 with zero production downtime.

Previously at Samsung Research, I built an end-to-end pipeline processing 80GB of KPI logs daily from S3 to GCP BigQuery. I improved a critical component 6x, cutting overall daily pipeline runtime by about 50%, and automated DMP dashboard deployments from minutes to seconds.

As a Google Summer of Code contributor for Xapian, I built click logging and ranking capabilities that improved MAP scores by about 10–20%. I bring experience across Java, Python, distributed systems, data pipelines, and production reliability.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Development Engineer

Current

Zeta

Jun 2022 - Present (4 years 3 months)

Designed onboarding journey for US credit card customers using Decision Model & Notation framework. Led migration of Pixel Rewards system to Tachyon Rewards and stabilized the system through data-driven analysis and architectural changes.

Business Process Modeling Notation Java Spring Boot Kafka Redis Apache Flink Elasticsearch Kubernetes Helm Docker Temporal SQL PostgreSQL MySQL Redshift Git Jenkins Grafana ArgoCD

Current

Software Development Engineer II

Current

Zeta

Jun 2022 - Present (4 years 3 months)

Engineered a real-time fraud prevention workflow system using Temporal for two-way communication with cardholders. Modernized Android push notifications to Firebase v1 API with zero downtime and reduced onboarding effort for new tenants via K8s CRD flow.

Temporal Java Spring Boot Kafka Redis Apache Flink Elasticsearch Kubernetes Helm Docker SQL PostgreSQL MySQL Redshift Firebase Android Git Jenkins Grafana ArgoCD

Senior Engineer

Samsung Research

Jul 2017 - Jun 2022 (4 years 11 months)

Designed and implemented an end-to-end data pipeline to ingest 80GB of raw KPI log data daily from S3 to GCP BigQuery. Optimized a critical pipeline component, achieving a 6x performance improvement and reducing overall daily pipeline runtime by approximately 50%.

Data Pipelines S3 BigQuery Java Python SQL Kafka Redis Apache Flink Elasticsearch Kubernetes Helm Docker Git Jenkins Grafana ArgoCD

Software Engineer

Samsung Research

Jul 2017 - Jun 2022 (4 years 11 months)

Developed a REST API backend and an authorization service for the TV Review Analytics System and Samsung's Data Management Platform. Automated and optimized the DMP dashboard deployment process on Jenkins, reducing deployment time from several minutes to a few seconds.

REST APIs Java Spring Boot SQL PostgreSQL MySQL Redshift Jenkins Git Docker Kubernetes Helm ArgoCD

Open Source Contributor

Google Summer Of Code - Xapian

May 2016 - Jul 2017 (1 year 2 months)

Built a click logger module to record click activity in Omega and extract relevance weights for Xapian's learning-to-rank system. Created and integrated new weighting methods for document ranking, boosting MAP scores by about 10-20%.

C++Python Xapian Learning To Rank Information Retrieval Git

Education

Degrees, certifications, and relevant coursework

Delhi Technological University

Bachelor of Technology, Software Engineering

2013 - 2017

Pursued a Bachelor of Technology in Software Engineering from Delhi Technological University (formerly Delhi College of Engineering) from 2013 to 2017.