Jeaf Gilbert Lead Software Engineer

About me

⌨️ Lead Software Engineer
📍 Jakarta, Indonesia
📱 Lead Software Engineer of mySmartfren


"... he showed results above expectations starting from the learning curve, understanding about the product or feature we have, task complexity, commit with the timeline given. And he's one of the most reliable partners I've ever met. ..."

Budi Normansyah, 2020

"... master in CSS, HTML, PHP, and JQuery also ASP.Net ... one of the best web developer I know."

Pingkan Matindas, 2011

"He always strive for perfection in all his works, has good technical skills (especially with CSS, and not to forget JQuery also), and always dedicated with his work."

Pandu Pradana, 2011


2022 - Current (2+ year)

Lead Software Engineer (Mobile & Web)

PT Smartfren Telecom, Tbk. | Jakarta |

mySmartfren, app that our team built, is now become top 1 revenue stream for our company. Its stability, performance, and security are improved significantly since I'm leading the team. Now we are building new optimistic Smartfren Shop project which includes microservices, web, and mobile app to provide new shopping experince for our customers.

Stack: Project Management, Agile, Scrum, Sprint, Kanban, Jira, JavaScript, TypeScript, React Native, React.js, TDD, Unit Testing, Jest, Firebase, iOS, Android, Git, Analytics, Netcore, AppsFlyer

2020 - 2022 (2 years)

Senior Senior Engineer (Mobile)

PT Smartfren Telecom, Tbk. | Jakarta |

As a senior mobile engineer, I initiated and maintained major features in mySmartfren app. Some of them were Payment, Authentication (including Session Management and Biometric), and Navigation. I also assisted leader to do code reviews, attended meetings with Product, and did pair programming with co-workers.

Stack: JavaScript, TypeScript, React Native, Unit Testing, Firebase, iOS, Android, Jest, Git, Agile, Jira

2020 - 2020 (1 year)

Founder & Full Stack Engineer (Web & Mobile)

Nota POS | Bandung |

As a single full stack engineer, I built its APIs and mobile app of Nota POS from scratch.

Stack: JavaScript, TypeScript, React Native, REST API, HTML, CSS, jQuery, PHP, MySQL, iOS, Android, Git, Bluetooth

2012 - 2020 (8 years)

Founder & Full Stack Engineer (Web)

Dunia Yuan | Bandung |

As a single full stack engineer, I built its APIs and website from scratch.

Stack: HTML, CSS, JavaScript, jQuery, Git, PHP, MySQL

2011 - 2012 (1 year)

Senior Frontend Engineer (Web)

PT Inovasi Informasi Indonesia | Remote, Denpasar |

As a frontend engineer, I converted PSD to Website Mock (Magento ready) for clients from Unites States. Proud to be part of the well known sites such as RayBan, Foot Locker, The Coffee Bean & Tea Leaf, SureFire, and Harbor Freight Tools.

Stack: HTML, CSS, JavaScript, jQuery, PHP, Magento, Git, Photoshop

2009 - 2011 (2 years)

Frontend Engineer (Web)

PT Mitrais | Denpasar |

As a frontend engineer, I worked directly with clients from Australia to work on their desktop applications and websites.

Stack: C#, Silverlight, LINQ, OOP, SQL Server, HTML, CSS, JavaScript, jQuery, Wordpress, SVN, Photoshop

2008 - 2008 (1 year)

Junior Engineer (Desktop)

PT Konsep Dot Net | Jakarta |

As a junior frontend engineer, I worked closely with my senior full stack engineer to deliver features using C#.

Stack: C#, SQL Server, SVN


2004 - 2008 (3.5 years)

Information Technology

Maranatha Christian University | Bandung |

Graduated with honors
GPA 3.88 of 4.00 (Summa Cum Laude)