Distributed Systems
Building a Reliable Event-Driven Blockchain Marketplace
Evolved a blockchain marketplace minting workflow toward WebSocket communication and Kafka-backed asynchronous processing.
View Case StudySenior Software Engineer
SBI
Shaheer Bin IjazBackend • Distributed Systems • Cloud
Building reliable backend systems for real-world scale.
Shaheer designs and builds scalable backend systems, distributed architectures, APIs, and cloud applications primarily with Python, FastAPI, Django, Kafka, PostgreSQL, AWS, and GCP.
Selected Work
Production-minded backend case studies
Projects are written around architecture, trade-offs, reliability, and implementation boundaries rather than inflated metrics.
Backend Systems
Designing Reliable Reward and Debit-Card Workflows for an Education Platform
Built backend workflows for reward disbursement, card loading, balance synchronization, audits, and controlled retries.
View Case StudyCloud
Building Cloud-Native Backend Services for a Healthcare Platform
Designed backend service patterns for healthcare and ERP workflows with privacy-aware cloud deployment.
View Case StudyData Engineering
Building Cloud ETL Pipelines for Multi-Marketplace Data
Created repeatable ingestion and transformation workflows for marketplace and SQL Server data moving into BigQuery.
View Case StudyAI / ML
Applying Computer Vision to Smart Manufacturing Quality Control
Evaluated computer-vision approaches for detecting stitching and manufacturing defects in apparel production workflows.
View Case StudyEnterprise Systems
Engineering Reliable Refund Workflows for an Airline Platform
Built enterprise backend workflow patterns for refund state validation, secure API access, and auditability.
View Case StudySystem Design
How I think about systems
Senior backend work is mostly about making behavior predictable when data, time, external systems, and people all create pressure.
Reliability
Designing workflows around explicit failure modes, retries, transactional boundaries, and graceful degradation.
Scalability
Separating request paths from background work and using data access patterns that remain predictable as systems grow.
Distributed Systems
Keeping service boundaries clear while accounting for eventual consistency and external-system uncertainty.
Observability
Making production behavior understandable through structured evidence instead of guesswork.
Security
Treating identity, access, secrets, and data protection as core parts of backend design.
Architecture Example
Decoupling external work from request handling
A representative pattern from the blockchain marketplace work: validate intent, publish durable work, process externally with retry-aware workers.
Marketplace requests flow through FastAPI into Kafka, then a minting consumer processes Solana RPC work asynchronously.
Marketplace
FastAPI
Kafka
Minting Consumer
Solana RPC
Technical Expertise
Organized by capability
A backend-heavy toolset across Python services, event-driven systems, databases, cloud infrastructure, delivery, and API architecture.