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© 2026 Yehezkiel Wiradhika

Hey, i'm Hez.

Welcome to my website!

I'm a Secure Backend / DevSecOps Engineer specializing in production-grade Go (Golang) microservices and distributed systems — backed by real penetration testing experience. I understand vulnerabilities from both sides: as an attacker who has probed 20+ web applications, and as an engineer who built and deployed the systems being attacked. I also build custom security tools — Vortex, AegisCI, GateKeeper Go, RBACLens — and integrate AI/ML into secure backend architectures. Pursuing eJPT security certification.

Posts and Projects ↓More About
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Featured Posts

Backend Engineering deep-dives, Go patterns, distributed systems, and Cyber Security — written from the trenches.

8/31/2026

10 Secure Go Coding Practices

10 of the most important Go Coding Practices.

golangappsecbackend
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8/31/2026

Secure File Uploads in Go

Accepting file uploads is one of the easiest ways to introduce a critical vulnerability into your application. Here's how to do it right.

golanggosecurity
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Featured Projects

Production and portfolio projects across Go Backend Engineering, DevOps, AI/ML, and Cyber Security — including real-world systems shipped at Astra Otoparts.

⭐ Production Grade Projects
Production Systems

⭐ Production Grade Projects

Production-grade distributed systems, industrial AI pipelines, threat intelligence platforms, and high-concurrency microservices shipped across enterprise, freelance, and research domains.

GoDistributed SystemsMicroservicesNext.jsPyTorch
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Backend Engineering
Backend Engineering Demos

Backend Engineering

Hands-on production patterns and code snippets in Go covering gRPC microservices, RabbitMQ work queues, Redis caching with JWT token rotation, Gemini LLM integrations, and automated unit testing with Mockery.

GoGingRPCRabbitMQRedis
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DevOps, Cloud Computing & Networking Projects
DevOps & Cloud Lab

DevOps, Cloud Computing & Networking Projects

A bunch of DevOps, Cloud Computing, Networking & Operating Systems projects.

DockerTerraformAWSEC2S3
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Cyber Security: Penetration Testing & DevSecOps
Security & Pentest

Cyber Security: Penetration Testing & DevSecOps

Offensive security engagements, threat intelligence pipelines, SIEM/IDS implementations, honeypots, malware analysis, and automated DevSecOps static/dynamic scanning.

Cyber SecurityPenetration TestingDevSecOpsThreat IntelligenceSIEM
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