fajrullah Sejati

Built 10+ features for the Order Portal, Self-Service portal and mobile apps, including rewards and promo codes, which made sign-up 3 minutes faster per step and increased Order Portal purchases by up to 1.5x. Successfully moved the system from the old platform to the new one through 3 migrations over 2 years, updating the front end each time, with little disruption to customers.

Built and rebuilt platforms for several clients at once across fintech, social media and trading, switching between different codebases and priorities as client needs changed. Shipped 3 products, including a trading platform for a new company in 3 months and a full product rebrand in under 1 month, which brought in more new customers for one client.

Built AI chatbots into a guest-service app for hotel clients, cutting food and drink calls by 70% and automating 92% of room service orders. Led the build of a helpdesk with live chat that hands guests from the bot to a person instantly, improving 24/7 response times, and mentored 2 junior engineers along the way.

Led a team of 3 engineers as the main technical person, working directly with clients and the CTO to decide what to build and how, and set up code review and release processes. Built and launched the WhatsHalal platform, including aTems (a halal certification platform, shipped in 12 months) and OurPasar (an online grocery app, shipped in 3 months). Deployed and ran the platform in production on AW

Started as the only engineer and built the company's warehouse, retail and finance systems from scratch, including a payment gateway that cut payment checks from 15–30 minutes to seconds and processed over IDR 3 billion in monthly transactions, with the largest reseller alone at IDR 1 billion a month. Built automated reporting that cut report time from 1 day to seconds, and mentored the 3 engineer

Kept a government energy client's systems at 98.1% uptime, above the agreed target, by spotting and fixing problems before they affected users. Coordinated incident response across support teams for 200+ servers, keeping the client informed and setting up a clear troubleshooting process that made fixes faster.

Built features for a government energy system as part of a 44-engineer team, working to strict industry compliance rules. Completed a 3-month intensive bootcamp with a senior engineer, then delivered features independently for the rest of the project.

Pursued a Master's degree in Management Technology at Budi Luhur University.

Pursued a Bachelor's degree in Computer Science at Budi Luhur University.