Available to hire
Hi, I’m Fajrullah Sejati, a passionate software engineer with extensive experience in full-stack development across various industries including fintech, social media, and hospitality. I love creating user-friendly and efficient digital products that improve user engagement and streamline business processes.
I thrive in Agile environments, enjoy mentoring junior developers, and continuously seek innovative solutions using modern technologies. Whether it’s enhancing mobile apps or building scalable web platforms, I bring dedication and a collaborative spirit to every project.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
Javanese
Advanced
Work Experience
Senior Software Engineer at MyRepublic Group Singapore
May 1, 2024 - June 7, 2024Enhanced product-selling website and mobile apps by delivering over 10 new features, reducing onboarding time by 3 minutes and tripling SMB customer acquisition. Developed rewards and promo code features to boost new customer acquisition by 5-10% and subscription conversions by 1-5% through targeted campaigns. Utilized technologies such as Typescript, Reactjs, Nextjs, React Native, Tailwind, Redux, and React Query.
Full-stack Developer at Slash Digital Pte Ltd
June 1, 2022 - December 31, 2023Revamped and built client platforms for fintech, social media, and trading companies, boosting user activity and onboarding. Delivered three key digital products including a trading product launched within three months and re-branding a client's product under a month. Applied Agile/Scrum methodologies and code review to enhance development efficiency, receiving high praise from clients and management. Tech stack included Typescript, Javascript, Reactjs, Vuejs, Nodejs, Expressjs, Tailwind, NoSQL, GraphQL, Socket.io, Java Spring.
Senior Software Engineer at Vouch Concierge Pte Ltd
January 1, 2022 - June 30, 2022Enhanced AI-powered customer system leading to a 70% reduction in F&B calls and automation of 92% of room service orders. Developed multi-merchant features saving customers 1-3 minutes when checking branches. Led integration of helpdesk solution with live chat, improving 24/7 response times with bot-driven handover and mentoring junior engineers. Technologies used include Typescript, Javascript, Reactjs, Vuejs, Nodejs, Expressjs, Tailwind, NoSQL, Jenkins, Socket.io, and JQuery.
Lead Software Engineer at Whats Halal Pte Ltd
February 1, 2020 - January 31, 2022Led full-stack development team collaborating with clients and CTO to deliver high-quality custom software solutions. Developed and launched multi-product WhatsHalal platform including halal certification and grocery shopping apps. Transformed warehouse, retail, and finance operations; delivered payment gateway and delivery system reducing verification time from 15-30 minutes to seconds contributing to significant revenue increase. Automated complex reporting processes, reducing report readiness time from one day to seconds. Mentored team members, applying Agile/Scrum methodologies and code review.
Senior Application Developer at Alqolam
March 1, 2018 - February 28, 2020Secured 98.1% application uptime for government energy client by proactive performance tuning surpassing SLAs. Coordinated incident response for 200+ servers in data centers through effective client communication and streamlined troubleshooting. Developed operational software features adhering to industry compliance within a large engineering team. Technologies included Javascript, Reactjs, Nodejs, Expressjs, Python (Django), PHP (Yii, CI & Laravel), NoSQL, and SQL.
Application Support Engineer at Aplikanusa Lintasarta
January 1, 2017 - February 28, 2018Monitored and supported application performance maintaining high uptime for government energy projects. Coordinated incident response over 200 servers with emphasis on operational stability and communication. Used PHP (CI), SQL (Postgres & MySQL), and NOC monitoring tools.
Application Developer Junior at Mitra Integrasi Informatika
April 1, 2014 - December 31, 2016Developed operational software features contributing to government energy projects in a large engineering team. Accelerated professional growth through an extensive bootcamp, mastering development practices and independently implementing features. Utilized PHP (CI), SQL (MySQL), and Java Spring.
Education
Bachelor’s Degree at Budi Luhur University
January 1, 2010 - December 31, 2013Master’s Degree at Budi luhur University
January 1, 2014 - December 31, 2016Qualifications
3-month extensive bootcamp program with an expert
April 1, 2014 - June 30, 2014Industry Experience
Software & Internet, Financial Services, Government, Travel & Hospitality, Telecommunications, Retail
Welcome to my project portfolio — a curated collection of software solutions I’ve designed, built, and shipped. From scalable web apps to efficient backend systems, each project reflects real-world challenges solved through clean code, thoughtful architecture, and user-centric design.
🌐 [Visit my full portfolio at fajrullah.com](https://www.twine.net/signin
Hire a Full Stack Developer
We have the best full stack developer experts on Twine. Hire a full stack developer in Jakarta today.