Fajar Firdaus
Software Engineer - Experiments at Xendit
Surabaya, East Java, Indonesia
Summary
👤
Senior🎓
Top SchoolFajar Firdaus is a pragmatic software engineer with 9 years of experience focused on fintech payment infrastructure, regulatory compliance, and scalable backend systems. At Xendit he led the development of NexCash (E-Money-as-a-Service), an in-house QRIS acquirer/issuer, and multi-bank Virtual Account integrations, directly contributing to securing Bank Indonesia licensing and production stability. Previously a Technical Lead at Bank BTPN, he re-architected monoliths into event-driven microservices, built company-wide observability tooling, and shipped high-throughput reconciliation systems. He excels at solving performance bottlenecks (e.g., eliminating Node.js crypto CPU saturation) and designing platforms other teams can build on, balancing revenue impact with auditability. Based in Surabaya, he blends hands-on engineering with operational ownership and a knack for turning regulatory constraints into scalable product advantages.
9 years of coding experience
5 years of employment as a software developer
Bachelor's degree, Informatics, Bachelor's degree, Informatics at Institut Teknologi Sepuluh Nopember (ITS)High School, Science, High School, Science at SMA Negeri 1 Gresik
English, Japanese, javanese, Indonesian
Stackoverflow
1reputation
57reached
0answers
1question
Github Skills (34)
javascript9
twitter9
twitter-api9
open-source9
face-detection8
face-recognition8
c-programming7
perl7
java7
api7
tweet7
python7
twint7
cpp7
bypass6
Programming languages (11)
Github contributions (5)
fajarmf10/The-Complete-Full-Stack-Javascript-Course
Oct 2019 - Oct 2019
https://www.udemy.com/full-stack-javascript/learn/
Contributions:10 commits, 2 PRs, 2 pushes in 1 day
learn-javascriptfull-stackjavascriptnodejs
sosispanggang/en-el-si
Jul 2017 - Sep 2017
Contributions:9 PRs, 30 pushes, 7 branches in 2 months
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