Avijit Saha

About

Engineer with banking and industrial/IoT experience who has deployed a payment-processing microservice with zero downtime, handling Protobuf schema evolution and sensitive data migration via dual-write/checksum techniques. Demonstrates strong cross-stack troubleshooting (pinpointed intermittent distributed timeouts to a failing ToR switch port) and customer-facing Python ETL customization using plugin-based parsers and Pydantic validation, plus hands-on monitoring/alerting improvements with operators.

Experience

Education

Key Strengths

• Delivered zero-downtime launch of a banking payment microservice via blue-green rollout
• Resolved downstream version mismatches using Protobuf versioning and backward-compatible schema handling
• Safe transactional data migration using dual-write and checksum-based consistency checks
• Systematic cross-layer debugging (app logs/tracing + hardware metrics + network analysis) to isolate infrastructure faults
• Identified packet loss/latency root cause as a failing top-of-rack switch port
• Built extensible Python ETL ingestion with vendor-specific parsers and plugin architecture
• Implemented robust schema validation with Pydantic and custom business-rule validators
• Effective on-site/operator collaboration to tune monitoring, reduce alert noise, and improve dashboard usability