Harsh Kumar Moroliya

Led the architectural design and performance engineering of a distributed content valuation platform, scaling 10+ Rust microservices on Kubernetes. Architected a deterministic pricing and OHLC candlestick generation engine, achieving sub-microsecond hot-path latency. Designed an actor-model web crawler utilizing Tokio mpsc channels and rdkafka. Built core platform microservices using tonic and Hexagonal/Ports & Adapters architecture. Engineered a Domain-Driven Design analytics service to process high-volume ad interactions via Kafka. Systematically eliminated architectural anti-patterns and implemented memory pooling. Dockerized the Rust fleet using cargo-chef and integrated OpenTelemetry tracing and automated CI/CD pipelines via GitLab.

Contributed to application architecture design for handling very high transaction throughput for critical financial and non-financial transactions. Optimized application code to handle high volume traffic, increasing transaction throughput. Researched, benchmarked, and selected ScyllaDB; optimized CQL NoSQL queries. Implemented queueing using a Redis driver for KeyDB. Migrated validation logic, account balance APIs, and dispatch APIs from Spring Boot Java 17 to Actix-web Rust. Created a PoC for a decentralized peer-to-peer network using libp2p.

Developed and deployed Concordium blockchain smart contracts compiled to WASM. Created a Next.js/TypeScript frontend integrated with Walletconnect and gRPC via the concordium web-sdk.

Analyzed and optimized a legacy medical application utilizing idiomatic Rust and Tokio, reducing memory footprint and latency. Implemented a long-term job scheduler using Tokios mio library. Integrated shared global app state for centralized control. Provisioned AWS cloud infrastructure using Terraform and integrated a Jenkins CI/CD pipeline for continuous agent deployment to JFrog.

Led the development of major new features, including Elasticsearch integration and PDF signature validation, within a large Rust microservices codebase. Assisted in migrating the application architecture from GCP to Azure. Set up Azure CI/CD pipelines to build, test, and deploy artifacts to Azure Container Registry. Successfully migrated the database from Google Cloud SQL for PostgreSQL to Azure Database for PostgreSQL. Implemented REST APIs using the Rocket web framework and developed a PoC for HTTP/2 gRPC-based microservices using the tonic crate.

Led smart contract development for staking NFTs and safe vaults using the Anchor framework. Refactored the Metaplex library to mint 8 NFTs in a single transaction, significantly reducing gas fees.