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Rayyan User

@rayyanuser

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Data Engineer focused on scalable ML-powered pipelines and real-time fraud detection.

India

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What I'm looking for

I seek roles building scalable, ML-driven real-time pipelines and conversational AI in collaborative Agile teams, with opportunities for technical ownership and impact.

I am a data engineer with 2.5+ years of experience delivering production software solutions across FinTech and airline domains, specializing in ML-powered, low-latency distributed systems.

At Visa I built high-throughput risk-scoring pipelines that process billions of messages with sub-10ms SLAs, achieving 50,000+ TPS and significant cost reductions while ensuring PCI DSS compliance.

Previously at Sabre I developed RAG-based AI assistants and PySpark data processing applications, integrating Vertex AI, BigQuery, and cloud-native deployment patterns to convert business requirements into scalable engineering solutions.

I enjoy designing end-to-end streaming voice and conversational AI systems, optimizing resource usage, and collaborating in Agile teams to deliver measurable business impact.

Experience

Work history, roles, and key accomplishments

Current

Data Engineer

Current

Visa Inc

Apr 2025 - Present (8 months)

Built a mission-critical distributed data pipeline for real-time ML-based risk scoring of global transactions, achieving 50,000+ TPS, <10ms latency SLA, and 99.99% uptime while reducing compute costs by 40%.

Python Ray Kafka Redis Kubernetes Golang GCP CI CD

Software Engineer I

Sabre Corporation

Jan 2023 - Mar 2025 (2 years 2 months)

Developed AI-driven pricing and recommendation services (SabreGPT, Offer Translator) using VertexAI, PySpark and BigQuery to automate rule generation and process large-scale airline data pipelines.

Python Pyspark Vertex AI BigQuery MongoDB GCP ReactJS Microservices

Developer (Intern)

BMC Software

Feb 2022 - Jun 2022 (4 months)

Implemented and monitored Spring Boot REST APIs and worked with BMC Patrol agent for application telemetry monitoring as part of a small engineering team.

Java Spring Boot MongoDB REST APIs Git

Education

Degrees, certifications, and relevant coursework

BMS College of Engineering

Bachelor of Engineering, Engineering

Grade: 3.8/4

Activities and societies: Final-year research project on GreenAge waste management; patent application for waste disposal and segregation for bio-oil extraction.

Completed a Bachelor of Engineering degree with a focus on software and engineering principles, including a final-year project on GreenAge waste management.