Hammid Olagunju

• Led design and implementation of a production data ingestion system for large-scale SQL datasets: batching, concurrency controls, rate limiting, retries, progress tracking, and data-integrity-first processing.
• Architected ETL pipeline patterns with transaction management, fault tolerance, and operational visibility (structured logging and monitoring) to support large imports safely.
• Built high-performance APIs with Fastify and deployed services on Kubernetes/Docker; used Istio for service-to-service communication.
• Automated delivery with GitLab CI/CD and built comprehensive pipelines; strengthened observability with Dynatrace and OpenTelemetry-style instrumentation.
• Frequent on-call/incident response: improved runbooks, logging, and failure handling to reduce time-to-recovery.
• First engineer on the team: set up infrastructure documentation, onboarding guides, and delivery practices to help the team scale.

• Built and operated microservices on Kubernetes with Istio, delivering secure and reliable internal service communication.
• Implemented fault-tolerant long-running workflows using Temporal (retries, idempotency patterns, operational resilience).
• Built Backend-for-Frontend services with NestJS + TS-Rest to deliver client-optimized APIs.
• Worked with Azure and CI/CD workflows in a regulated, correctness-first domain.

• Set up CI/CD for multiple services using GitHub Actions (builds, tests, and release management), increasing developer confidence and moving releases from a few times a week to multiple times a day.
• Managed cloud resources using Terraform across AWS, GCP, and DigitalOcean, making environments easy to spin up via well-defined templates.
• Used Kubernetes for resource management and autoscaling to keep services reliable under variable load.
• Implemented OpenTelemetry instrumentation to centralize traces/logs across frontend + backend services, improving debugging speed, monitoring, and customer experience.
• Also contributed to core product delivery: whitelabel partner platform, internal services, and platform improvements across a fast-moving e-commerce environment.

• Built backend systems supporting content discovery, engagement, and scalable feeds using TigerGraph and GraphQL.
• Co-developed notification systems and onboarding improvements that supported engagement and conversion.

• Spearheaded development and launch of a mobile app for a Canadian government initiative delivering accurate COVID-19 information.
• Delivered end-to-end features across app + services with a strong focus on reliability and clear UX.

Dimmah

Full-service software agency. Web, mobile, cloud, AI.

Relo (coming soon)

WhatsApp bot for diaspora to pay family bills back home (electricity, TV, airtime) — directly from chat.