Mohammad Shadab
Chennai,India
Summary
Strategic Technology Executive and Engineering Leader experienced in scaling enterprise software systems and building high-performing engineering organisations. Led cross-functional, distributed teams delivering mission-critical payment network compliance and fraud prevention, processing millions of transactions daily. Combines expertise in high-scale distributed systems with advanced education in Data Science and ongoing Ph.D. in AI/ML, bridging business strategy and technical execution to enhance enterprise efficiency.
Overview
5
5
Languages
1
1
Certification
13
13
years of professional experience
Work History
Engineering Manager - Payment Network Compliance
PayPal
Chennai
09.2024 - Current
- Own end-to-end compliance mandate delivery across Visa, Mastercard, Amex, and Discover, coordinating 3 cross-functional squads and 20+ engineers across India and the US to ship regulatory changes on time with zero compliance penalties.
- Drove strategic roadmap and OKR definition for compliance platform, aligning engineering priorities with network mandate timelines and acquirer commitments to achieve timely regulatory compliance.
- Partnered with Visa, Mastercard, and Discover network teams, internal legal, risk, and product stakeholders to clarify regulatory requirements and develop actionable engineering plans.
- Established an engineering excellence culture: introduced structured design reviews, on-call SLOs, and quarterly talent calibration, reducing P0 incidents by ~35% within two quarters.
- Championed applied AI/ML explorations in compliance domain, leveraging PhD research insights to assess ML-driven anomaly detection for proactive mandate violation prediction.
Member of Technical Staff I - 3DS & Payments Architect
PayPal
Chennai
08.2022 - 09.2024
- Led architecture and end-to-end delivery for Shopify strategic partnership initiatives: TRA-based 3DS exemption, Instant Add Funds via card, and 3DS for Pay Later - each shipped on schedule with cross-org stakeholder alignment.
- Designed and delivered multiple high-impact 3DS programs - Data-only 3DS, 3RI (merchant-initiated transactions), and TRA-based exemptions - processing millions of transactions monthly across unbranded and branded payment flows.
- Architected and engineered systems, producing design documents, leading technical reviews, and writing production code to support 3DS initiatives.
- Drove adoption of event-driven microservices patterns, enhancing inter-service coupling and enabling deployment independence across 3DS platform.
Software Engineer III - Tech Lead & Architect, Fraud & Investigations Platform
PayPal
Chennai
04.2020 - 08.2022
- Architected and built the core of a ground-up modernization: dismantled a legacy C# monolith into fault-tolerant Java microservices, defining the patterns, abstractions, and module boundaries the team extended across the platform.
- Engineered the API Gateway + AMQ orchestration layer with chunking, throttling, and prioritization - a reusable infrastructure foundation supporting 10×+ async workflow volume.
- Designed and built an end-to-end fraud intelligence pipeline (Spring Batch → Oracle DB → BigQuery) to ingest NCFTA threat feeds, delivering a production-ready system for team scaling.
- Led PayPal's India engineering team, defining architectural direction, guiding design decisions, and establishing a foundational codebase for broader team utilisation.
Software Engineer II - Compliance Infrastructure
PayPal
Chennai
11.2018 - 03.2020
- Integrated Fircosoft sanctions screening client into PayPal's containerized ecosystem using sidecar pattern with Nginx, enhancing compliance capabilities while maintaining core service stability.
- Migrated Single Party Post-Processing from legacy C++ daemon to Java/AMQ-based service, unifying compliance workflows and increasing scalability for high-volume sanctions screening.
- Collaborated with cross-functional teams to identify system requirements, improving software functionality and user experience.
- Developed and implemented new software applications, enhancing company productivity and client satisfaction.
- Monitored system performance post-deployment, addressing any issues promptly to maintain high levels of operational efficiency.
AI/ML Team Lead
Vivriti Capital
Chennai
09.2018 - 10.2018
- Founded and scaled first AI/ML engineering team; collaborated with Data Science to implement event-driven data pipelines on AWS (MongoDB → S3/SQS → Redshift) using Lambda (Go) and PySpark Glue ETL.
- Developed reusable AWS Glue ETL framework, enabling 3× faster future data pipeline development.
- Led staff meetings to delegate tasks, assign workloads and communicate changing priorities.
- Monitored team performance, providing suggestions for improvement and training programmes to increase team efficiency
- Managed conflict resolution within the team, promoting a positive and productive work environment.
Application Engineer - Compliance & Search Platforms
DXC Technology
Chennai
09.2017 - 08.2018
- Developed CaseSearchApp (Spring MVC, Hibernate, ReactJS, Elasticsearch) to empower global operations teams in efficiently searching and triaging compliance cases across billions of transactions.
- Enhanced Norkom AML platform with Hadoop-based SINE scanning engine (Pig, Hive, Lucene) for scanning against global watchlists, increasing accuracy of sanctions hit rate.
- Collaborated with product development teams to integrate new features into existing applications.
- Facilitated user training sessions, empowering clients to utilise applications effectively.
- Managed project timelines and resources to deliver application projects within agreed deadlines.
Senior Software Engineer / Team Lead
Glenwood Systems, LLC
Chennai
10.2015 - 09.2017
- Led teams of up to 30 engineers to deliver enterprise healthcare SaaS (EMR, Billing, Analytics, Reporting), recognised as Best Manager Ever through company cash award.
- Architected Billing Central (GWT, Spring REST, RabbitMQ, Drools) to unify billing workflows across hospital networks, enhancing accuracy through rule-engine-driven automation.
- Resolved Jira tickets with comprehensive bug fixes.
- Mentored junior software engineers, providing guidance on coding standards, best practices, and professional development.
- Developed and implemented new software applications, enhancing company productivity and client satisfaction.
Software Engineer
Glenwood Systems, LLC
Chennai
10.2013 - 09.2015
- Delivered EMR, Billing, Data Porting, and Telephony modules for US healthcare clients; built Patient Appointment Call Reminder system using Asterisk PBX and Google TTS to minimise missed appointments.
- Collaborated with cross-functional teams to identify system requirements, improving software functionality and user experience.
- Developed and implemented new software applications, enhancing company productivity and client satisfaction.
- Monitored system performance post-deployment, addressing any issues promptly to maintain high levels of operational efficiency.
Education
PhD - Computer Science & Information Systems (AI/ML)
BITS Pilani
Hyderabad12-2028
MTech - Data Science
Birla Institute of Technology and Science
Pilani09-2021
B.Tech - Computer Science
Dr. A.P.J. Abdul Kalam Technical University
Greater Noida, UP01-2013
Skills
- Payment Network Compliance
- Fraud Detection
- PCI-DSS
- Payment systems expertise
- Cloud & Infra AWS
- Distributed systems architecture
- Microservices
- Event-Driven Architecture
- API Design
- API Gateway
- RabbitMQ
- SQS
- Docker
- Kubernetes
- BigQuery data analysis
- Oracle DB
- PostgreSQL
- Elasticsearch
- Hadoop
- Deep Learning
- NLP
- Gen AI
- Roadmapping
- OKR
- Stakeholder engagement
- Technical Roadmapping
- Design Reviews
- On-Call SLOs
- Agile processes
- Engineering leadership
- Team Building
- Hiring & Performance
- Apache Camel
- Agile processes
- Design Reviews
- On-Call SLOs
- Technical Roadmapping
Certification
- Quantum Computing, Machine Learning (ML) and Artificial Intelligence (AI)
- Java Full Stack Developer
- Software Architecture: From Developer to Architect
- Critical Thinking and Problem Solving
- Android Developer Certificate
Languages
Java (expert)
Python
Go
PySpark
SQL
Custom
https://www.linkedin.com/in/me-shadab/
Timeline
Engineering Manager - Payment Network Compliance
PayPal
09.2024 - Current
Member of Technical Staff I - 3DS & Payments Architect
PayPal
08.2022 - 09.2024
Software Engineer III - Tech Lead & Architect, Fraud & Investigations Platform
PayPal
04.2020 - 08.2022
Software Engineer II - Compliance Infrastructure
PayPal
11.2018 - 03.2020
AI/ML Team Lead
Vivriti Capital
09.2018 - 10.2018
Application Engineer - Compliance & Search Platforms
DXC Technology
09.2017 - 08.2018
Senior Software Engineer / Team Lead
Glenwood Systems, LLC
10.2015 - 09.2017
Software Engineer
Glenwood Systems, LLC
10.2013 - 09.2015
PhD - Computer Science & Information Systems (AI/ML)
BITS Pilani
MTech - Data Science
Birla Institute of Technology and Science
B.Tech - Computer Science
Dr. A.P.J. Abdul Kalam Technical University