vikas singh
Web3 engineer with 5+ years of experience building decentralized applications, smart contracts, and scalable backend infrastructure.
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Stack
All skillsJavaScriptTypeScriptSolidityC++CNPMPNPMNode.jsNestJSExpress.jsOllamaNodemonESLintSwaggerMySQLPostgreSQLMongoDBAmazon DynamoDBQdrantRedisRabbitMQApache KafkaWebhooksWebRTCWebSocketsgRPCDockerKubernetesFirebaseAWSDigitalOceanVercelGitGitHubGitLabJiraOpenSea
JavaScript
TypeScript
Solidity
C++
C
NPM
PNPM
Node.js
NestJS
Express.js
Ollama
Nodemon
ESLint
Swagger
MySQL
PostgreSQL
MongoDB
Amazon DynamoDB
Redis
RabbitMQ
Apache Kafka
Webhooks
WebRTC
WebSockets
gRPC
Docker
Kubernetes
Firebase
AWS
DigitalOcean
Vercel
Git
GitHub
GitLab
Jira
OpenSeaExperience
All experienceOct 2025 - Present
Web3 Backend Developer
The Hashgraph Group
Pfäffikon, Zurich, Switzerland
Recent work
All projectsCustom Ai Agent
A monorepo containing a NestJS backend and Next.js frontend for chatting with a local Llama 3.2 model via Ollama, with RAG (Retrieval-Augmented Generation) capabilities for context-aware responses.
View case studyMymetafi.io
A decentralized collective investment platform where users can pool funds to purchase NFTs and other digital assets, with automated profit distribution and proposal-based governance.
View case studyTaxicoin.app
A revolutionary cross-platform mobile app that combines ride-hailing with DeFi, enabling users to book taxis using TXC tokens and stablecoins while earning yields through in-app staking.
View case study