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harith_insider

Ezaz Hossain

@harith_insider

SDE2 at Zeta

Inde
Anglais, Hindi, Bengali
Certaines informations sont présentées en anglais.
À propos de moi
I am a Backend Software Engineer (SDE-2) at Zeta, specializing in building high-scale payment and card-processing systems. I have extensive experience with Java, Spring Boot, Apache Flink, Kafka, and AWS, including migrating batch processing pipelines to improve efficiency by 70% and handling 200K+ requests per minute.... Plus d’infos

Compétences

h
harith_insider
Ezaz Hossain
hors ligne • 

Voir mes services

Applications Web Full stack
I will build any kind of complex backend system
De100 $US / projetPlus de détails

Expérience professionnelle

Zeta_IT Innovations

Software Engineer 2

Zeta IT Innovations • Temps plein

Jun 2024 - Present • 2 yrs 3 mos

• Designed and shipped end-to-end SHAZAM Network integration for debit-card payments: network connectivity, auth/settlement message handling, deterministic failure classification across channel admission gates. • Authored spec-driven technical designs for converting an HLD to deliverable codebase. • Leverage AI agents daily for spec authoring, backend implementation, test generation, and workflow automation — reducing repetitive tasks while maintaining code quality. • Designed Add-Money capability through debit card for prepaid payment system: initiation, reversal, channel admission gate, idempotency (409), and deterministic/non-deterministic error classification. • Architect migration from Spring API-based architecture to Apache Flink batch processing system, improving data processing efficiency and scalability for high-volume financial transactions. • Implemented Apache Airflow workflows to execute complex queries on Amazon Redshift and orchestrate data extraction, transformation, and loading (ETL) processes to Amazon S3. • Designed and developed Flink batch processing jobs to read data from Amazon S3 and perform large-scale data transformations, reducing processing time by 70% for 1 Lakh+ daily financial statements. • Created Kubernetes Operator for auto-provisioning cluster resources; migrated monolith to multi-tenant.

Google

Software Engineer

Google • Temps plein

Nov 2021 - Jun 2024 • 2 yrs 7 mos

• Design a generic cache architecture using Spring Boot that provides the flexibility to incorporate various types of caches including In-Memory and Redis, supporting both synchronous and asynchronous operations which reduce cache failure by 50%. • Implemented eTag(Entity Tag) generation for all APIs of our application which reduces 75% data transfer between our application and clients (Our application usually handles 200K/minute requests). • Architected a robust alerting micro-service with Kafka, Redis, facilitating real-time data processing; this implementation enhance overall system reliability and operational efficiency • Implemented a php package as well as JDK for our internal alerting system which supports various notification channel such as Flock, Email, Twilio, SMS.