Umar Hadi Siswanto

Part of the LiveOps SRE team keeping AccelByte's backend platform for AAA multiplayer games reliable around the clock. Serving in a 24/7 shift-based LiveOps rotation, monitoring production health and responding to incidents across backend services powering live multiplayer games.

Co-founded Larizin, a point-of-sale SaaS that helps Indonesian businesses run sales, billing, and reporting from a single app across Android, iOS, desktop, and web. As CTO, I lead technology direction and own the backend architecture, infrastructure, and production operations.

Led the design and development of an AI agent platform that enables businesses to automate workflows across multiple SaaS systems through intelligent, task-driven agents.

• Owned end-to-end platform architecture, including agent orchestration, LLM integration, and system scalability to reliably handle complex multi-step workflows.
• Built and integrated with external APIs and third-party services to transform fragmented tools into cohesive, automated workflows for end users.
• Drove infrastructure strategy, deployment pipelines, and system performance to support rapid iteration while maintaining reliability, security, and cost efficiency.
• Translated ambiguous business problems into practical AI-driven solutions, shaping both technical direction and product capabilities.

Led company-wide infrastructure strategy and operations for an HR and payroll platform, reporting directly to the CEO, with responsibility for reliability, incident response, cost control, security, and long-term sustainability of the platform.

• Designed and implemented the monitoring and alerting stack using Prometheus and Grafana, providing full visibility into infrastructure health and performance across cloud and bare-metal environments.
• Executed an emergency production cutover during a critical cloud account disruption — failing over MongoDB replica sets to standby bare-metal infrastructure, reissuing TLS certificates, and restoring full HTTPS service within hours — while delivering two-tier incident communication to internal teams and customers.
• Rewrote the Node.js serverless backend (AWS Lambda) in Go and shipped it to production, resolving mobile-app compatibility issues along the way.
• Migrated object storage from AWS S3 to Cloudflare R2, including rework of Lambda upload paths, cutting storage and egress costs.
• Drove migration from AWS to bare metal infrastructure, taking full ownership of planning, execution, and operational stability to significantly reduce recurring cloud costs.
• Established routine backup systems for databases and file servers, improving data resilience and disaster recovery readiness.
• Built automation scripts to streamline deployment, maintenance, and operational workflows, reducing manual intervention and operational risk.
• Migrated CI/CD pipelines from Jenkins to GitHub Actions to simplify maintenance and reduce tooling costs.

Founded and lead Zenvoye, a software house delivering end-to-end product development and platform engineering, while remaining hands-on in critical technical decisions and execution.

• Defined technical standards, architecture patterns, and delivery processes for client projects across web, backend, mobile, and infrastructure.
• Acted as principal engineer on high-impact projects, taking ownership of system design, scalability, and deployment strategy.
• Oversaw full project lifecycles from requirement translation and architecture design to deployment and post-launch operations.
• Established CI/CD and deployment best practices to ensure consistent delivery quality across client engagements.
• Balanced client needs, delivery timelines, and technical sustainability as both business owner and technical decision-maker.

Operated production infrastructure for MinerbaOne, the Ministry of Energy and Mineral Resources' national platform for mineral and coal licensing, hosted in Indonesia's National Data Center (PDN).

• Operated 100+ Rancher-managed Kubernetes clusters keeping MinerbaOne continuously available as a nationally critical government system.
• Led the migration of MinerbaOne from PDN to a new temporary national data center (PDNS) in a different city with zero downtime.
• Strengthened delivery pipelines and system resilience by improving CI/CD workflows and addressing critical security vulnerabilities across services.
• Delivered AI workloads into restricted government environments, ensuring secure and compliant execution within private infrastructure constraints.
• Improved infrastructure performance and cost efficiency through proactive optimization and system-level enhancements.

Owned platform, infrastructure, and delivery pipelines across web, backend, and mobile products as the primary decision-maker for system architecture, CI/CD standards, and operational practices.

• Migrated production workloads from EC2 to serverless architecture using SST, improving scalability and reducing operational complexity.
• Designed self-hosted GitHub Actions runners and unified CI/CD release workflows across frontend, backend, and mobile teams, enforcing dependency vulnerability checks.
• Built and operated a containerized Laravel backend with PostgreSQL and pgvector to support internal tools and future feature development.
• Led migration from Create React Native App to Expo, implementing fully automated build and release for both App Store and Play Store.
• Minimized public IP exposure and designed private inter-VPC networking for secure internal service communication.
• Implemented centralized monitoring using AWS CloudWatch, enabling early detection of production issues across all services.

Owned and operated platform infrastructure and delivery pipelines for multiple high-traffic products across food & beverage, global marketplace, and e-commerce domains.

• Built internal tooling to accelerate sprint planning and designed a centralized operational request workflow to improve cross-team collaboration and accountability.
• Led company-wide migration from Jenkins to GitHub Actions, reducing CI/CD maintenance overhead and infrastructure cost.
• Optimized AWS cost by migrating workloads to Spot Instances, cleaning up unused services, and running large-scale S3 raw photo cleanup jobs.
• Reduced public IP usage by designing a mesh VPN network between services.
• Built and maintained custom macOS self-hosted runners (Mac Mini) for iOS and Android builds.
• Strengthened security posture by implementing DefectDojo for code security assessment and integrating SonarQube for static analysis.
• Designed AWS infrastructure from scratch for YAY! Group to support multiple brands and high-volume online delivery traffic.
• Migrated Wagginton's source control from Bitbucket to GitHub, including CI/CD pipeline migration and SonarQube integration for code quality governance.

Led a platform optimization initiative to improve system performance and cost efficiency by redesigning the deployment and delivery approach.

• Initiated and executed migration from static infrastructure to an on-demand platform architecture, achieving ~70% performance improvement and ~50% infrastructure cost reduction.
• Adopted an infrastructure model that automatically scaled with demand, eliminating unnecessary always-on resources and reducing operational overhead.
• Established a standardized CI/CD pipeline to improve deployment reliability and reduce manual release effort.
• Built and launched the company landing page to support product presence and early user acquisition.