Olayemi Samuel_
Backend Developer
I build the invisible layer that makes products work, APIs, databases, distributed systems, and the infrastructure that holds everything together. I care about correctness, performance, and systems that don't wake you up at 3am.
// skills
Languages
Backend & Systems
// experience
Architected a scalable microservices backend using Spring Boot and Java, containerized via Docker. Integrated Redis for low-latency session management and instant budget validation, designed PostgreSQL schemas for wallet balances and transaction logs, and integrated third-party payment gateways with Prometheus and Grafana monitoring.
Engineered scalable backend microservices using Java Spring Boot to support high-concurrency financial transactions. Implemented Apache Kafka for asynchronous event-driven messaging across decoupled services and integrated Redis for distributed caching to minimize database load.
// projects
A distributed reliable message queue that decouples producers and consumers and has a very high throughput for cross-topic atomic writes. Uses Raft for consensus. No 2pc coordinators.
A microservices-based video streaming platform built with Spring Boot and gRPC, featuring video upload, storage, and streaming capabilities.
Xuell Infra is a local deployment console for shipping Git repositories into Docker containers, routing them through Caddy, and monitoring live logs from a React frontend.
A university election platform combining Decentralized Identifiers (DIDs), Groth16 zk-SNARKs, and Ethereum smart contracts to achieve verifiable, privacy-preserving voting.