Devesh Rawat
Verified Expert in Engineering
Software Developer
Bengaluru, Karnataka, India
Toptal member since July 24, 2024
Devesh has nine years of experience building distributed systems across fintech, genomics, Web3, and AI. At Roadzen, he reduced processing latency by 30% and increased throughput by 50% with a Rust and GStreamer pipeline. At Refinable, he grew an NFT marketplace to 100,000+ users and shipped the open-source SDK that developers relied on. Devesh is currently at Nexular, building LangGraph AI agents with a hybrid RAG and trading signal engines at 50,000+ events per second.
Portfolio
Experience
- REST APIs - 7 years
- Git - 7 years
- Node.js - 6 years
- Docker - 5 years
- PostgreSQL - 5 years
- Redis - 4 years
- MongoDB - 3 years
- Rust - 3 years
Preferred Environment
Docker
The most amazing...
...thing I've shipped is Refinable, an NFT marketplace that grew from single-chain to 100,000+ users. My SDK became how every developer integrated with it.
Work Experience
Lead Engineer
Nexular
- Enhanced CI/CD processes and software development practices, enabling faster, more reliable releases.
- Introduced AI-based testing and review automation, cutting review turnaround time, improving defect detection, and removing dependency on dedicated QA resources.
- Architected a production-grade AI agent using LangGraph, hybrid retrieval, and semantic caching, optimizing LLM utilization, reducing operational costs, and improving scalability and response performance.
Senior Software Engineer
Roadzen
- Built a webhooks management system from scratch using Amazon SQS with dead-letter queues and exponential backoff retry logic, increasing data delivery reliability by 95%.
- Reduced processing time by 30% and doubled the capacity by creating a media processing microservice using Rust and GStreamer.
- Reduced infrastructure costs by 25% and cut API response time from 800ms to under 200ms by introducing Redis caching on high-frequency insurance data queries and eliminating redundant database round-trips.
- Built an event-driven report generation system that processed thousands of high-volume insurance reports daily at sub-second response times.
Senior Engineer
Xoriant
- Built event-driven payment processing for NOMO's Sharia-compliant digital banking platform using AWS EventBridge and SQS, integrating ClearBank payment rails and Temporal Cloud workflow orchestration.
- Migrated a self-hosted Temporal server to Temporal Cloud, cutting infrastructure ops overhead and improving workflow reliability for a team of five engineers.
- Diagnosed and fixed N+1 query patterns and missing index coverage in DynamoDB access patterns, eliminating the main performance bottlenecks in the banking dashboard.
Full-stack Blockchain Engineer
Refinable
- Boosted user adoption by 15% and reduced integration time by 20% by engineering an open-source SDK using TypeScript and ethers for seamless NFT market integration.
- Implemented a real-time notification system for NFT transactions using GraphQL and NestJS, boosting user retention.
- Increased platform activity by 30% by enhancing smart contract scalability through diamond standard evolution and integrating Solana blockchain contracts into a multichain NFT marketplace.
Senior Software Engineer (via Ncrypt Ventures)
Hlth
- Optimized database queries and reduced infrastructure costs by 40% using a standby strategy.
- Reduced loading time by 50% and increased overall user satisfaction metrics by implementing Redux and optimizing front-end code architecture.
- Built and scaled the upload service using Rust, achieving efficient upload of large files, or files of over 5GB, on AWS.
- Improved gas usage by 10% and contract security against potential vulnerabilities by orchestrating the creation and rigorous testing of complex Solidity smart contracts.
Full-stack Blockchain Engineer (via Ncrypt Ventures)
AJNA.digital
- Reduced API response time by 40% and enhanced system scalability to support more concurrent users by developing and implementing multiple microservices using Node.js.
- Decreased the time-to-market by 20% and enhanced overall software quality by 15% by spearheading the establishment of an advanced CI/CD integration framework with Travis CI, optimizing testing and deployment procedures.
- Developed system architecture and moved the platform from Amazon EC2 to ECS and EBS.
Full-stack Software Engineer
Independent
- Leveraged Node.js, the Express framework, and MongoDB to develop robust eCommerce platforms, news websites, and job portals, delivering seamless user experiences.
- Developed customized solutions for clients using SQL and WordPress, enhancing online presence and optimizing content management systems.
- Collaborated with clients to provide ongoing project maintenance and support, ensuring smooth operations and promptly addressing technical issues.
Experience
Marco Polo Exchange (MPX)
https://mpxchange.com/MPX is a pioneering US-based financial services and technology firm dedicated to revolutionizing cross-border investing and capital raising. It aims to dismantle the barriers that hinder global investment opportunities and capital flows.
The platform we developed features built-in compliance mechanisms that empower local securities firms to distribute their investment products seamlessly across global markets. By integrating cutting-edge technology with regulatory adherence, MPX enables a streamlined, secure, and efficient pathway for cross-border investments, fostering greater connectivity and growth in the financial sector. Its key features include global distribution, which facilitates the international reach of local investment products, and compliance integration, which ensures adherence to diverse regulatory requirements across different jurisdictions.
Certifications
Advanced RAG with Vector Databases and Retrievers
Coursera
AI Engineer Agentic Track: The Complete Agent & MCP Course
Udemy
AI Engineer Core Track: LLM Engineering, RAG, QLoRA, Agents
Udemy
Expert Solidity Bootcamp
Encode Club
Fundamentals of Database Engineering
Udemy
Skills
Libraries/APIs
Node.js, REST APIs, React, OpenAPI
Tools
Amazon Simple Queue Service (SQS), Git, Docker Compose, GitLab CI/CD, GitHub, Claude Code
Languages
Rust, JavaScript, TypeScript, HTML, Python 3, CSS, Python, Solidity, GraphQL, SQL, HTML5, JavaScript 5
Frameworks
Express.js, JSON Web Tokens (JWT), Next.js, LangGraph, LlamaIndex
Platforms
MacOS, AWS Lambda, Docker, Kubernetes, Amazon Web Services (AWS), Blockchain, Amazon EC2, Google Cloud Platform (GCP), WordPress, CrewAI
Storage
PostgreSQL, MongoDB, Databases, MySQL, Redis, Amazon S3 (AWS S3), Amazon DynamoDB
Paradigms
REST, Microservices, Model Context Protocol (MCP)
Other
Message Queues, Back-end, Single-page Applications (SPAs), Full-stack, Software Design, APIs, AI Tools, API Design, Architecture, SaaS, Distributed Architecture, Prompt Engineering, Agentic AI, Minimum Viable Product (MVP), Generative Artificial Intelligence (GenAI), CI/CD Pipelines, Actix Web, API Integration, Webhooks, SDKs, RESTful Microservices, EventBus, Web3, Ethers.js, Web UI, Sharding, iTerm2, Creative Problem Solving, Coding, Data Structures, Algorithms, LangChain, OpenAI SDK, Anthropic, RAG Architecture, Fine-tuning, Open-source LLMs, QLoRA, FAISS, ChromaDB, ReAct Agents, Multistage LLM Chains, Large Language Models (LLMs), TimescaleDB, Agentic RAG Systems, Cursor AI, Apache Pulsar
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