Tersedia untuk Kontrak Upwork & Remote GlobalAvailable for Upwork & Global Remote Contracts

Arsitektur Web Skalabel & Sistem FinTechEngineering Scalable Systems & High-Impact Web Apps

Bahrul Ulum — Senior Full-Stack Software Engineer (5+ tahun pengalaman) berspesialisasi dalam sistem tiket enterprise, integrasi Virtual Account bank, platform e-commerce berperforma tinggi, dan arsitektur SaaS menggunakan Laravel, React, dan Next.js.Bahrul Ulum — Senior Full-Stack Software Engineer with 5+ years specializing in enterprise ticketing engines, automated banking VA pipelines, high-throughput e-commerce, and modern SaaS architecture using Laravel, React, and Next.js.

Rekrut di Upwork / DiskusiHire on Upwork / DiscussPelajari Case StudiesExplore Case Studies
100% Milestone Success100% Milestone Success
US (EST/PST) & EU OverlapUS (EST/PST) & EU Overlap
Production-Grade SecurityProduction-Grade Security
Bahrul Ulum

01.Tentang SayaAbout Me

Saya adalah Full-Stack Web Programmer dengan pengalaman lebih dari 5 tahun. Saya memiliki spesialisasi dalam membangun sistem kompleks berskala besar mulai dari platform e-commerce, e-learning, sistem ticketing, sistem logistik, hingga integrasi fitur canggih seperti payment gateway dan kecerdasan buatan (AI).

Dengan penguasaan ekosistem modern dari frontend (Astro, React) hingga backend (Laravel, Node.js), saya berkomitmen untuk menciptakan solusi digital yang aman, scalable, dan teroptimasi penuh untuk SEO.

I am a Full-Stack Web Programmer with over 5 years of experience. I specialize in building large-scale complex systems ranging from e-commerce platforms, e-learning, ticketing, logistics systems, to advanced integrations like payment gateways and Artificial Intelligence (AI).

With mastery in modern ecosystems from frontend (Astro, React) to backend (Laravel, Node.js), I am committed to creating digital solutions that are secure, scalable, and fully SEO-optimized.

5+
Years Exp
50+
Projects
100%
Success
SEO
Pro
Studi Kasus Arsitektur Featured Production Case Studies

Solusi Rekayasa & Hasil Terukur Proven Architecture & Measurable Impact

Sistem berskala produksi yang dirancang dengan fokus pada ketahanan transaksi, performa tinggi, dan otomatisasi bisnis nyata. Production-grade systems engineered with a focus on transactional integrity, high throughput, and tangible business automation.

KM Sultan Hasanuddin Ship E-Ticketing
FinTech & Maritime Transit

KM Sultan Hasanuddin E-Ticketing

PIP Makassar • Enterprise Booking Engine & FinTech Gateway

100%
Auto Settlement
0%
Seat Conflict
<100ms
Lock Latency
The Problem: Antrean loket manual padat dan rekonsiliasi mutasi transfer perbankan harian rawan selisih kas. Physical ticket queues caused port congestion, while manual bank statement reconciliation caused cash disputes.
Engineering: Membangun engine tiket Laravel dengan webhook BNI Virtual Account (HMAC & idempotency lock), transaksi database atomik untuk kursi, dan QR boarding pass. Architected a Laravel engine with BNI Open API Virtual Account webhook listeners (idempotency locks), atomic seat-locking, and encrypted QR boarding passes.
Business Impact: 100% rekonsiliasi otomatis instan, zero duplikasi kursi, dan eliminasi antrean loket hingga 90%. 100% automated settlement reconciliation, zero duplicate bookings, and >90% reduction in counter wait times.
Laravel BNI Open API MySQL ACID Redis TailwindCSS
Explore App
Livinmille Fashion Global Storefront
Cross-Border E-Commerce

Livinmille Global Storefront

DTC Apparel Brand • Multi-Currency & Cross-Border Logistics

Global
Multi-Currency
<650ms
Catalog Speed
-40%
Cart Drop-off
The Problem: Cart abandonment tinggi karena ketiadaan kalkulasi ongkir internasional otomatis dan checkout multi-mata uang. High international cart drop-offs caused by missing dynamic volumetric shipping tariffs and limited local payment options.
Engineering: Integrasi payment gateway multi-mata uang (CC internasional, VA, E-Wallet), API kurir global (DHL/FedEx), dan Redis catalog cache. Built multi-currency gateway integration, dynamic courier API tariff calculations, and sub-second Redis catalog caching.
Business Impact: Membuka ekspor ke pasar US, SG, dan AU dengan penurunan drop-off pesanan sebesar 40%. Successfully expanded retail sales into US, Singapore, and Australia while reducing checkout drop-offs by 40%.
Laravel Payment Gateway Courier APIs Redis TailwindCSS
Visit Store
PT. Ivana Gerak Semesta Logistics Hub
Enterprise Logistics & SaaS

PT. Ivana Logistics Hub

Freight Forwarder Enterprise • Real-time Tracking & Multi-Branch Portal

Instant
AWB Lookups
30+
Hubs Connected
-70%
Support Inquiries
The Problem: Pelanggan dan cabang harus menelepon admin manual setiap hari untuk mengecek posisi kargo dan perhitungan tarif. Corporate clients and branches relied on manual phone calls for AWB status queries and dimensional cargo rate estimates.
Engineering: Portal pelacakan resi instan via AWB, kalkulator biaya volumetrik darat/laut/udara, dan dashboard kontrol multi-cabang (RBAC). Engineered instantaneous AWB tracking, dynamic multimodal freight calculators, and multi-branch RBAC operational dashboards.
Business Impact: Menurunkan tiket pertanyaan status pengiriman hingga 70% dan transparansi tarif pengiriman secara mandiri. Slashed tracking support calls by 70% and enabled self-service freight rate quotes across nationwide transit routes.
PHP / Laravel RESTful APIs MySQL / Postgres RBAC Auth TailwindCSS
Explore Portal
SiseeNote Creative Interactive Studio
Interactive SaaS & AI

SiseeNote Creative Studio

On-Demand Custom Print SaaS • Canvas Customizer & AI Layout Assistant

Live
Browser Canvas
300 DPI
Vector PDF Export
Zero-Touch
Pre-Press Revisions
The Problem: Pemesanan cetak kustom via chat memerlukan revisi berulang berhari-hari dan sering terjadi salah ukuran/resolusi cetak. Manual custom print ordering over chat required days of back-and-forth and caused frequent print specification defects.
Engineering: Studio canvas HTML5 di browser dengan preview interaktif, ekspor PDF 300 DPI otomatis, dan asisten agen AI rekomendasi layout. Engineered an in-browser HTML5 canvas customizer with automated 300-DPI PDF generation, integrated checkout, and an AI layout assistant.
Business Impact: Mengeliminasi 100% revisi manual pra-cetak dan memproses pesanan langsung ke mesin produksi secara instan. Cut pre-press turnaround from 48 hours to zero-touch instant submission, eliminating printing errors and boosting checkouts.
HTML5 Canvas PHP / Laravel API AI Integration Payment Gateway TailwindCSS
Try Customizer
Easysunday E-Commerce
DTC Fashion & E-Commerce

Easysunday Fashion Storefront

Lifestyle Fashion Brand • 1-Page Checkout & Inventory Automation

1-Page
Fast Checkout
Instant
Payment Webhook
0%
Over-selling
The Problem: Tingginya bounce rate pengguna mobile dan alur checkout multi-halaman yang lambat pada saat peluncuran koleksi baru. Sluggish mobile load times and a complicated multi-step checkout caused high bounce rates during new collection drops.
Engineering: Storefront mobile-first dengan loading sub-detik, checkout 1 halaman dengan callback pembayaran otomatis, dan notifikasi stok menipis. Mobile-first storefront with sub-second page loads, single-page checkout connected to instant payment callbacks, and low-stock alerts.
Business Impact: Meningkatkan konversi mobile secara konsisten dan meniadakan kendala penjualan barang melebihi stok (*over-selling*). Significantly boosted mobile conversion rates while completely eliminating inventory over-selling discrepancies.
Laravel Payment Gateway MySQL TailwindCSS Mobile-First UX
Visit Store
PIP Makassar English Camp
EdTech & Automated Admissions

PIP English Camp & LMS

Maritime Education Institution • Automated Admissions & BNI Virtual Account

100%
Auto Admissions
<5s
Access Activation
Zero
Manual Check
The Problem: Pendaftaran peserta kursus secara manual memicu antrean verifikasi bukti transfer dan keterlambatan pembagian akun belajar. Manual verification of student tuition transfers caused severe administrative backlogs and delayed LMS onboarding.
Engineering: Engine pendaftaran terintegrasi Virtual Account BNI unik per pendaftar, listener webhook pelunasan otomatis, dan aktivasi akun instan. Automated enrollment engine with unique BNI Virtual Accounts, real-time webhook validation, and instant student access provisioning.
Business Impact: Menghemat ratusan jam kerja staf administrasi tiap pembukaan batch dan aktivasi akses peserta dalam 5 detik setelah bayar. Saved hundreds of administrative hours per intake cohort and activated student learning portals within 5 seconds of payment.
PHP / Laravel / CI BNI Open API MySQL Role Portals TailwindCSS
Explore LMS
Kolaborasi Klien Global & Upwork Global Client & Upwork Collaboration

Mengapa Klien Internasional Memilih Saya? Why International Clients Choose to Work With Me

Dirancang untuk tim remote yang bergerak cepat: komunikasi asinkron yang jelas, standar rekayasa production-grade, dan perlindungan kontrak fleksibel. Engineered for fast-moving engineering teams: clear async communication, production-grade code quality, and flexible milestone-based contract execution.

Fleksibilitas Zona Waktu Timezone Alignment

Overlap 4+ jam kerja harian dengan zona waktu US (EST/PST), Eropa (GMT/CET), dan Asia/Australia untuk standup, sync call, dan sprint review lancar. 4+ hours daily synchronous overlap with US (EST/PST), Europe (GMT/CET), and APAC (SGT/AEST) for seamless sprint planning, standups, and rapid reviews.

Flexible Working Hours

Komunikasi Asinkron Proaktif Async-First Transparency

Update progres berkala via rekaman Loom, catatan PR GitHub yang rapi, board Jira/Linear yang transparan, dan ketersediaan cepat di Slack atau Discord. Proactive updates via short Loom screen recordings, clear GitHub Pull Request notes, transparent task tracking (Jira/Linear), and prompt Slack communication.

Zero Guesswork Collaboration

Standar Kode Production-Grade Production-Grade Standards

Menerapkan prinsip SOLID, kepatuhan PSR-12, indexing database efisien (bebas issue N+1), sanitasi keamanan API, dan arsitektur yang mudah dirawat. Strict adherence to SOLID principles, PSR-12 conventions, database indexing (zero N+1 queries), input sanitization, and scalable modular architecture.

Clean, Scalable Codebase

Kontrak Fleksibel & Upwork Ready Contract Flexibility & Escrow

Mendukung kontrak per milestone harga tetap (*fixed-price*) maupun berbasis jam (*hourly $35-$65/hr*) dengan jaminan perlindungan escrow Upwork. Available for fixed-price milestone deliveries or hourly retainer contracts ($35 - $65/hr) backed by Upwork Escrow payment security and milestones.

100% Escrow Protected
Status: Siap Menerima Kontrak Baru Status: Open for Q4 2026 Contracts

Punya proyek SaaS, sistem FinTech, atau web kustom? Need a high-performing engineer for your next milestone?

Mari diskusikan requirement Anda secara langsung atau kirimkan tawaran kontrak langsung melalui Upwork / Email. Let's discuss technical requirements, architecture, and timeline directly. Upwork direct invitations and contracts are fully supported.

Mulai Diskusi Proyek Start a Project Consultation bahrululumtkj@gmail.com

03.Keahlian TeknisTechnical Mastery

Frontend

HTML/CSSJavaScriptAstroReact

Backend & AI

LaravelCodeIgniterExpress Node.jsArtificial Intelligence

Database

MySQLOraclePostgreSQL

Others

APIPayment GatewaySEOGitHub

Perjalanan KarierCareer Journey

2023 - PRESENT

Web Programmer

Politeknik Ilmu Pelayaran (PIP) Makassar

Mengelola dan mengembangkan sistem internal institusi menggunakan teknologi modern untuk efisiensi operasional.Managing and developing institutional internal systems using modern technologies for operational efficiency.

2022 - PRESENT

Programmer & Digital Marketer

ANR GROUP Company

Bertanggung jawab atas aplikasi manajemen internal dan strategi pemasaran digital perusahaan skala menengah.Responsible for internal management applications and digital marketing strategies for mid-scale company.

2019 - 2023

Web Programmer

CV Booble Mitra Kreatif

Membangun berbagai platform e-commerce dan sistem edukasi untuk berbagai klien lokal.Built various e-commerce platforms and education systems for local clients.

2018 - PRESENT

Freelance Web Developer

Independent Projects

Membantu bisnis lokal dan startup dalam transformasi digital mereka melalui solusi web kustom.Helping local businesses and startups in their digital transformation through custom web solutions.

Siap untuk
Berkolaborasi?Ready for
Collaboration?

Mari diskusikan proyek Anda dan buat sesuatu yang luar biasa bersama-sama.Let's discuss your project and build something amazing together.

bahrululumtkj@gmail.comgithub/bahrululum
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