About

I build and review software systems with a strong focus on application security, scalable backend architecture, and secure-by-design engineering practices. My background combines software engineering and practical security testing, allowing me to approach systems from both the builder and attacker perspectives. I’m particularly interested in: * application security * business logic vulnerabilities * secure architecture reviews * DevSecOps practices * AI-assisted engineering workflows *...

What People Say

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I've had the privilege of working with Dyan, and I can confidently say that he is an exceptional senior programmer with a true passion for security. He has the ability to combine strong technical expertise with a deep curiosity about how a system can be built and protected....
DO

Dhennis Octavianus

Project Manager | Scrum Master | CPC | PSM I |...

August 25, 2025

Career Journey

Current Jul 2025 - Present · 11 mos

Software Engineer

Greener

📍 Australia

LaravelReact.jsTailwind CSSMySQL
Current Jan 2025 - Present · 1 yr 5 mos

Penetration Tester

Mitrais

📍 Indonesia

Vulnerability ManagementOWASPWeb Application SecurityVulnerability Assessment and Penetration Testing (VAPT)
Current Nov 2017 - Present · 8 yrs 7 mos

Software Engineer

Mitrais

📍 Greater Yogyakarta

HTML5Penetration TestingGithubWeb Development
Jul 2024 - Oct 2024 · 4 mos

Frontend Engineer

Graycorp

📍 451 Pulteney St, Adelaide, SA, 5000 Australia

Front-End DevelopmentVue.jsJavaScriptHTML5
Jun 2021 - Dec 2023 · 2 yrs 7 mos

Information Technology Team Lead

BTPN Syariah

📍 Jakarta, Indonesia

HTMLHTML5Software DesignGitFlow
Aug 2019 - Dec 2020 · 1 yr 5 mos

Software Engineer

MM Electrical Merchandising

📍 Australia

Develop web and mobile application use OutSystems

Software EngineeringProgrammingHTMLHTML5
Jun 2018 - Jun 2019 · 1 yr 1 mo

Android Developer

DANA Indonesia

📍 Jakarta, Indonesia

JSONAndroid DevelopmentAndroid
Nov 2017 - Apr 2018 · 6 mos

Mobile Application Developer

SAYFA Group

📍 Australia

Jul 2017 - Sep 2017 · 3 mos

Head Of Information Technology

Kulina
Apr 2006 - Jun 2017 · 11 yrs 3 mos

Senior Developer

PT.Gamatechno Indonesia

📍 Yogyakarta, Indonesia

Senior Web Application Developer, Research & Development Solution, DevOps, Senior Android Developer, Web Security Engineer, Mobile Security Engineer

May 2014 - May 2017 · 3 yrs 1 mo

Chief Technology Officer

PT. ASANKA

📍 Bali, Indonesia

Jun 2015 - Jul 2015 · 2 mos

Full Stack Developer

Upwork
Jan 2006 - May 2006 · 5 mos
CP

Freelance Flash Developer

Cute Production

📍 Jakarta

Jan 2006 - Apr 2006 · 4 mos
MC

Web Developer

Msm Consultants

📍 jakarta

Nov 2004 - Jan 2005 · 3 mos
RK

Freelance Flash Designer

Ruang Kerja

📍 Yogyakarta

Education

Bachelor's Degree

Universitas Janabadra

2009 - 2014

Associate's Degree

Amik Kartika Yani

2000 - 2005

Yogyakarta State University

1998 - 2000

High School

Man Yogyakarta II

1995 - 1997

Skills

React.js Tailwind CSS Docker Cursor Prompt Engineering Vulnerability Management OWASP Vulnerability Assessment and Penetration Testing (VAPT) Front-End Development Microservices RabbitMQ Laravel Vue.js Vue Nuxt Nuxt.js Next.js NestJS Node.js PHP