tonisives

Built audit-hero.com: content aggregation platform with Node.js backend, scraping APIs and storing embeddings in Qdrant vector database for security finding matching. Developed Cosmos DEX aggregator showing price differences across pools, with Node.js Lambda backend and ReactJS frontend. Participated in Solidity security audits on Code4rena/Sherlock, finding high/medium severity vulnerabilities and gaining deep EVM knowledge. Deployed NFT contracts on Polygon using Hardhat with UUPS upgradeable pattern.

Architected data streaming services processing thousands of Ford and PSA vehicles using Kafka, achieving 580 msg/s throughput with horizontal scaling via Kubernetes. Implemented Kinesis-to-Kafka bridge with DynamoDB checkpointing for fault-tolerant stream processing. Built AWS Lambda functions with Terraform CDK for customer stream registration and Kinesis sink publishing to multiple parallel streams. Developed connected-car backend using Kotlin and Ktor, implementing RESTful services with OAuth authentication for vehicle data management. Designed monitoring solutions with Grafana dashboards and Sentry error tracking. Containerised deployments using Kubernetes with Helm charts for automated scaling.

Developed Jaguar Land Rover and Fiat iOS apps using telematics for vehicle data exchange.

Developed Android/iOS native applications and mobile games using Unity3D.