Hi, my name is
Gregorius Bima Kharisma Wicaksana
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Operating production cloud platforms that serve enterprise-scale internal workloads. 6+ years of cloud infrastructure experience specializing in GCP, Kubernetes, Terraform, and HashiCorp Vault. Cost-aware operations: CUD, Spot instances, and self-hosted observability — sustained zero cost complaint over 2 years. Open source contributor to projects like Gitea, tscircuit, and Gumroad.
Jakarta, Indonesia
About Me
A brief introduction about who I am and what I do
I'm a Senior Cloud Infrastructure Engineer at PT. Indomarco Prismatama (Indomaret Group) operating production cloud platforms — GCP, Kubernetes (K3s/GKE), Terraform, HashiCorp Vault, and ArgoCD GitOps. This track has run parallel since 2021, continuation of the Technical Architect work area; full focus from July 2026 onward.
I specialize in Golang, HashiCorp Vault, Terraform, and cloud-native infrastructure. Hands-on with hybrid cloud/on-premise setups, IAP-secured workloads, and observability stacks (Grafana + Prometheus).
Previously held a Technical Lead title (2021-2026) across 4 engineering squads (Recruitment, Time Management, IRK, Course) — coordination role, closed July 2026 to focus on cloud. The cloud/DevOps track ran parallel throughout and continues now.
{
"name": "Gregorius Bima Kharisma Wicaksana",
"role": "Senior Cloud Infrastructure Engineer",
"company": "PT. Indomarco Prismatama",
"location": "Jakarta, Indonesia",
"experience": "7+ years",
"focus": [
"GCP / Kubernetes",
"Terraform / Vault",
"ArgoCD / GitOps",
"Observability"
],
"available_for": "Remote Opportunities"
}Skills & Expertise
Technologies and tools I work with
Languages
Infrastructure
Cloud Cost & Reliability
Databases
Architecture
Also experienced with
Featured Projects
Some of my recent work that I'm proud of
Other Projects
Sui DAO
Sui Move DAO governance system with voting, proposals, and treasury management.
Web Presensi
Frontend application for attendance management system built with SvelteKit and Tailwind CSS.
DEX Aggregator
DEX Price Aggregator API that fetches real-time prices from multiple decentralized exchanges.
Chain Indexer
Blockchain event indexer for ERC-20 and ERC-721 tokens. Indexes transfer events and holder balances.
Lexicon
Full-featured Blog/CMS with .NET 8 Clean Architecture backend and Next.js frontend.
Open Source Contributions
Contributing to the open source community and collaborating with developers worldwide
tscircuit
Create electronics with React and TypeScript. Design PCBs and schematics using JSX.
Contribution: Add knockout props, highlightColor support, .kicad_mod imports (Multiple PRs)
Gumroad
Sell digital products directly to your audience. E-commerce platform for creators.
Contribution: Migrate Edit Product page to Inertia, fix scroll issues (Multiple PRs)
Cortex Linux
The AI Layer for Linux. Agentic system administration and intelligent automation.
Contribution: AI-powered dependency conflict prediction, Interactive TUI Dashboard ($150 bounty)
Databuddy
Privacy-first analytics platform with focus on user experience and data privacy compliance.
Contribution: Implement feature flag folders for organization (PR #280)
Gitea
Self-hosted Git service written in Go. A painless, self-hosted Git service.
Contribution: Fix CODEOWNERS review request attribution (PR #36348)
StarkNet.go
Golang Library for StarkNet/Cairo. Build StarkNet applications with Go.
Contribution: Add EstimateFeeFlag type, specific return types for Block methods (PR #843)
Work Experience
My professional journey in software engineering
Senior Cloud Infrastructure Engineer
PT. Indomarco Prismatama (Indomaret Group)
Continuation of the Technical Architect work area — production cloud platform operations across GCP, Kubernetes, Terraform, and Vault. Run parallel to the Technical Lead role until July 2026, then full focus on this track.
- ▹ Operating GCP infrastructure across 37+ Compute Engine instances, with IAP tunneling and zero public exposure
- ▹ Maintaining Kubernetes platforms (K3s/GKE) with ArgoCD GitOps, Vault dynamic secrets, and Grafana/Prometheus observability
- ▹ Day-to-day Terraform-driven provisioning, on-call rotation, and capacity planning for hybrid cloud/on-premise workloads
- ▹ Cloud cost optimization: Committed Use Discounts (CUD) for steady-state workloads, Spot/Preemptible GCE for fault-tolerant jobs, and self-hosted Loki/Prometheus/Grafana stack to avoid Cloud Logging ingestion charges
- ▹ Sustained cost discipline over 2 years — zero board-level complaints on cloud spend despite continuous infrastructure expansion and dynamic up/down scaling
Technical Lead
PT. Indomarco Prismatama (Indomaret Group)
Technical Lead across 4 engineering squads (Recruitment, Time Management, IRK, Course) — coordination role parallel to the cloud infrastructure track. Closed TL role July 2026 to focus full-time on cloud.
- ▹ Spearheaded CI/CD automation using GitHub Actions and Jenkins, cutting deployment time by 40%
- ▹ Built custom API Gateway using Laravel as Layer 1 security for external API access
- ▹ Standardized Domain-Driven Design (DDD) and Hexagonal Architecture across teams
- ▹ Introduced AI-driven workflows, boosting team autonomy and development velocity
Technical Architect
PT. Indomarco Prismatama (Indomaret Group)
Designed and implemented high-availability systems and scalable infrastructure for enterprise applications.
- ▹ Led monolith-to-microservices migration using Docker and GCP
- ▹ Designed scalable API Gateway infrastructure
- ▹ Implemented Terraform-based IaC to standardize cloud provisioning
- ▹ Deployed internal apps via IIS and Nginx with hybrid cloud/on-premise setups
Full Stack Developer
PT. Indomarco Prismatama (Indomaret Group)
Built and maintained HR systems and internal applications using various tech stacks.
- ▹ Developed HR systems using .NET MVC, Laravel, and WCF
- ▹ Managed SQL Server and PostgreSQL databases for various modules
- ▹ Maintained version control and collaborated using TortoiseSVN and GitHub
Beyond Engineering
Software engineering is my primary craft. Outside of it, I run a hands-on multi-category e-commerce operation — managing products, orders, inventory, and customers in the field. The same operational discipline I apply to backend systems, I apply to running a real business.
{
"operator_since": "2020",
"operating_model": "Solo + lean support team",
"categories_handled": [
"Essential goods",
"Lifestyle products",
"Food & snacks"
],
"duration": "4+ years continuous operation",
"focus": [
"Order pipeline hygiene",
"Repeat customer retention",
"SKU & margin discipline",
"Channel diversification"
],
"available_for": "Marketplace & E-commerce Ops roles"
}I don't treat commerce as a side hobby. I've run multi-category operations through demand shifts, supply issues, and channel changes — the same kind of operational pressure that a remote E-commerce / Marketplace Operations role demands.
E-commerce & Marketplace Operations
A dedicated portfolio covering operational case studies, an Operations Lab (Product & SKU Master, Order Control Board, Inventory & Reorder, Margin Guardrail), and responsible work practices.
- ▹ Operational case studies from real multi-category selling
- ▹ Operations Lab with templates for product, order, inventory & margin
- ▹ Honest framing: synthesized demos clearly labeled, no inflated claims
Get In Touch
I'm currently open for freelance projects and consulting opportunities. Whether you have a question or just want to say hi, feel free to reach out!
Let's Work Together
Looking for a Senior Cloud Infrastructure Engineer, Cloud Infrastructure Engineer, or Cloud Consultant? I'm available for interesting projects and collaborations.
Say Hello