Open to opportunities

Shubham Raj

@shraj97

Message

I build reliable distributed platforms for payments, data infrastructure, and security.

India

Message

What I'm looking for

I'm looking to build scalable, reliable, fault-tolerant software systems across distributed platforms, cloud infrastructure, and backend products.

At Salesforce, I co-deliver automated Kafka/Ajna and RHEL9 migrations across 12+ production stacks and 700+ data-tier servers, maintaining zero downtime and zero customer impact.

I build CI/CD orchestration, Kubernetes-deployed Kafka services, and capacity automation for highly available infrastructure processing 1,160 TB of data. My work has sustained 100% read availability, 99.999% write availability, sub-5 ms latency, and 210 MB/s average throughput.

Previously, I built real-time UPI payment services for HDFC PayZapp 2.0 at Zeta and optimized Visa payment services for SMBC, reducing utility response latency from 363 ms to 15 ms. I enjoy designing scalable, fault-tolerant backend systems using Java, Spring Boot, Kafka, Kubernetes, and AWS.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer (SMTS)

Current

Salesforce Inc.

Feb 2024 - Present (2 years 7 months)

Co-delivered automated Apache Kafka/Ajna and RHEL9 migration across 12+ production stacks and 700+ data-tier servers in under 10 weeks, achieving zero downtime and zero customer impact. Sustained 100% read availability, 99.999% write availability, <5 ms latency, and 210 MB/s average throughput while migrating infrastructure processing 1,160 TB of data.

Kafka Jenkins CI CD Docker Kubernetes Kafdrop Splunk Patching Certificate Rotation Load Testing Observability

Software Development Engineer II

Zeta Suite (Directi)

Jan 2021 - Nov 2023 (2 years 10 months)

Designed and developed backend services powering HDFC PayZapp 2.0 UPI platform, implementing high-volume P2P, P2M, Collect and AutoPay (UPI Mandate) transaction flows. Built scalable payment workflows and backend APIs for real-time UPI processing, focusing on reliability, correctness and low-latency transaction execution.

Java Spring Boot REST APIs Microservices UPI Payment Systems Backend Development Scalability Low Latency Systems

Software Development Engineer

Visa Inc.

Jul 2019 - Jan 2021 (1 year 6 months)

Optimized payment processing services for Sumitomo Mitsui Banking Corporation (SMBC), reducing utility response latency by 95% (363 ms to 15 ms). Delivered multiple payment infrastructure initiatives including Dynamic Currency Conversion (DCC), BIN Lookup Utility, Settlement File Encryption, and Japan Utility Connection Pooling.

Payment Processing Java BIN Lookup Settlement File Encryption Connection Pooling Performance Optimization

Data Science Intern

Mareana Inc.

May 2019 - Jun 2019 (1 month)

Built OCR and image-processing pipelines for automated extraction and parsing of structured and handwritten invoice data, improving document digitization workflows.

OCR Image Processing Python Data Extraction

Software Development Intern

Visa Inc.

May 2018 - Jul 2018 (2 months)

Developed a reusable Maven archetype to automate end-to-end onboarding of new acquirers, reducing application setup time from months to days. Received a Pre-Placement Offer (PPO) as one of the top-performing interns among 80 interns.

Maven Java Automation Onboarding Software Development

Full Stack Developer Intern

Suspect Technologies

Nov 2017 - May 2018 (6 months)

Developed an AI-powered video redaction platform for surveillance and witness protection, enabling automated video anonymization for public safety and law enforcement organizations.

AI Redactions Surveillance Anonymization

IoT Intern

Prago Technologies

May 2017 - Jul 2017 (2 months)

Designed and developed an Android application leveraging Bluetooth Beacon technology to deliver location-aware customer engagement and proximity-based merchant notifications.

Android Bluetooth Beacons IoT Location Based Services Mobile Development