Jagdish Parihar
Hey, I'm a Senior Backend Engineer at Zzazz.ai. I specialize in building cloud-native, low-latency data systems in Rust, Go, and Node.js. My work includes scaling event-driven architectures, real-time analytics, and contributing to open-source projects like Apache DataFusion.
Experience
Zzazz.ai - Senior Software Engineer (Dec 2023 - Present)
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Rewrote a Python-based web crawler in Rust with ~300% higher throughput and 40% less memory.
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Built analytics backend processing 10M+ events/day.
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Designed a Rust-based event aggregation engine with optimized memory and concurrency.
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Standardized observability with OpenTelemetry, reducing MTTR by 30%.
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Practices: TDD, DDD, Microservices.
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Skills: Rust, Kafka, OpenTelemetry, Docker, PostgreSQL
Biofourmis - Backend Engineer (Sept 2022 - Nov 2023)
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Built a real-time patient monitoring platform.
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Migrated Node.js service to Go, saving 40% memory.
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Improved inter-service reliability using Kafka and REST APIs.
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Skills: GoLang, Node.js, Kafka, Microservices
Habitat - Backend Engineer (June 2021 - Aug 2022)
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Built a real-time chat system supporting 2K+ concurrent users using Redis Pub/Sub.
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Modularized backend with NestJS for faster development.
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Explored alternatives like uWebSockets for performance.
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Skills: Node.js, NestJS, Redis, WebSockets
Quor - Backend Engineer (Oct 2020 - June 2021)
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Designed GraphQL APIs to solve under/over fetching.
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Built RabbitMQ-based worker system for web crawling.
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Optimized Elasticsearch for time-priority queries.
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Skills: GraphQL, Elasticsearch, RabbitMQ, Node.js
Open Source Contributions
- Contributed to Apache DataFusion.
- Added Decimal to Timestamp casting.
- Refactored window functions into user-defined window functions (UDWFs) for better modularity.