Mokhamad Rofiudin

Own site reliability engineering (SRE), platform operations, and backend development for a multi-tenant conversational AI platform running on GKE — on-call, postmortems, and infrastructure hardening, alongside building and maintaining the Go services that run on it.

• RESOLVEDDiagnosed a production chatbot response-delay incident caused by a large broadcast overwhelming reactive autoscaling; designed and shipped a KEDA pre-scaling strategy (combined CPU + scheduled triggers) that scaled the affected worker to 90 replicas ahead of each broadcast window with zero pending pods. While validating it, found and fixed an unrelated crash-loop on a neighboring service caused by a blocking health-check pattern — resolved by redesigning the liveness/readiness probe split, then safely cycled roughly 140 deployments cluster-wide to clear the resulting connection storm.
• 5 WHYSLed a 5 Whys investigation into a P1 cluster-wide worker node outage, uncovering three independently compounding failures — a silently broken CNI plugin from a deprecated upstream image registry, CPU starvation from a security agent lacking container-aware exclusions, and unbounded log growth on end-of-life Kubernetes/Docker versions — and delivered both immediate fixes and a long-term upgrade roadmap.
• HARDENINGDesigned and personally verified an end-to-end security hardening reference implementation (private-only encrypted Cloud SQL, functional account lockout tested via real login attempts, immutable/locked backups verified via real deletion attempts, hardened bastion access via IAP + OS Login + least-privilege service accounts) to prove a client's regulatory compliance controls were technically achievable ahead of a production-wide rollout.
• MIGRATIONAuthored the migration plan and led execution of a production Kafka cluster migration from ZooKeeper-based coordination to KRaft consensus mode.
• Created and scaffolded new services from the ground up — git setup, Helm chart, CI/CD pipeline, and ArgoCD GitOps registration — and served as an individual contributor across 25+ service repositories on the platform.
• BUILTPersonally designed and built several Go backend services now running in production, including payment gateway middleware connecting the chatbot platform to telco billing systems across multiple client accounts (push-to-pay, top-ups, refunds, WhatsApp payment reminders), and a CRM conversation adapter integrating the chat channel with a third-party live-chat API.
• Operate workloads spanning Airflow, Spark, and cert-manager; maintain CI/CD pipelines (Azure Pipelines) and GitOps deployments (ArgoCD, Helm); produce RCA documentation across databases, messaging systems, and orchestration tooling.

• Built and maintained PHP-based web products for clients, translating requirements into working software under real deadlines.
• Delivered a ride-sharing platform, a job-matching application with a custom matching algorithm, and an e-commerce platform with cart, payments, vouchers, and referrals.
• Advised on technical solutions across other projects beyond direct ownership.

• Advised local clients on software, websites, design, promotion, and general computer literacy.

• Built internal applications in Visual Basic 6; handled hardware and software troubleshooting.
• Trained end users to independently resolve recurring issues.