LYK
Lourensius Yudha coding with a laptop on a rooftop

Lourensius YudhaLourensius Yudha

Business Software &Web Applications DeveloperBusiness Software &Web App Developer

I design and build inventory and order systems, approval workflows, field operation platforms, reporting automation, and customer-facing websites from planning to production deployment.Saya merancang dan membangun sistem inventaris dan pesanan, workflow persetujuan, platform operasional lapangan, otomatisasi laporan, serta website untuk pelanggan dari perencanaan hingga deployment production.

View projectsLihat projectView servicesLihat layanan
Hiring? Download my CV ↓Sedang merekrut? Unduh CV saya ↓
Available for business software projects and remote development rolesTersedia untuk project software bisnis dan posisi developer remoteSurabaya, IndonesiaSurabaya, Indonesia
LaravelNext.jsTypeScriptNode.jsPostgreSQLMySQLSupabaseFlutter

Selected workKarya terpilih

Production software and web applications built around real users, workflows, and business outcomes.Software production dan aplikasi web yang dibangun berdasarkan pengguna, workflow, dan hasil bisnis nyata.

Surveyor member relation system banner showing supervisor dashboards and advisor mobile workflows
Web and mobile operationsOperasional web dan mobile

Surveyor Visit Monitoring SystemSistem Monitoring Kunjungan Surveyor

A production platform used by 10+ field surveyors and supervisors to assign, record, review, map, and report member visits across mobile and web.Platform production yang digunakan 10+ surveyor lapangan dan supervisor untuk penugasan, pencatatan, review, pemetaan, serta pelaporan kunjungan member melalui mobile dan web.

UsersPengguna
10+ field and supervisory users10+ pengguna lapangan dan supervisor
Field accessAkses lapangan
Surveyors work from their own phonesSurveyor bekerja melalui HP masing-masing
Admin accessAkses admin
Supervisors administer from office computersSupervisor mengelola melalui komputer kantor
WorkflowWorkflow
Assignment, review, maps, and exports centralizedAssignment, review, peta, dan export terpusat
My contributionKontribusi saya

Product workflow design, full-stack web development, authentication, database, storage, mobile API integration, and production deployment.Perancangan workflow produk, pengembangan web full-stack, autentikasi, database, storage, integrasi API mobile, dan deployment production.

React 19Next.js 16TypeScriptTailwind CSS 4+6 more+6 lainnya
Read full case studyBaca studi kasus lengkap
GA Request System banner showing administration dashboards, warehouse stock, reporting, and receipt documents
Workflow systemSistem workflow

Internal Request & Approval Management SystemSistem Manajemen Permintaan & Persetujuan Internal

A Laravel-based system that centralizes cross-department inventory requests, item-level review, fulfillment, warehouse stock, and receipt documents.Sistem berbasis Laravel yang memusatkan permintaan inventaris lintas divisi, review per barang, realisasi, stok gudang, dan dokumen tanda terima.

AccessAkses
One controlled account per divisionSatu akun terkontrol per divisi
SubmissionPengajuan
Supervisors or designated staff submit requestsSPV atau petugas yang ditunjuk mengajukan permintaan
AdministrationAdministrasi
Admin GA controls review and fulfillmentAdmin GA mengelola review dan realisasi
TraceabilityKetertelusuran
Stock and handover records remain traceableStok dan dokumen serah terima dapat ditelusuri
My contributionKontribusi saya

Workflow and data modeling, full-stack Laravel development, role-based access, inventory control, reporting, and document generation.Perancangan workflow dan data, pengembangan Laravel full-stack, akses berbasis peran, kontrol inventaris, pelaporan, dan pembuatan dokumen.

PHP 8.3+Laravel 13MySQLBlade+6 more+6 lainnya
Read full case studyBaca studi kasus lengkap
Luvea inventory and order management system banner showing the public website and inventory, sales, margin, and invoice workflows
Website and inventory systemWebsite dan sistem inventaris

Luvea Inventory & Order Management SystemSistem Manajemen Inventaris & Pesanan Luvea

Two complementary digital products for Luvea: a public landing page for brand discovery and an operational system for inventory, sales, margins, and reporting.Dua produk digital yang saling melengkapi untuk Luvea: landing page publik untuk memperkenalkan brand dan sistem operasional untuk inventaris, penjualan, margin, serta laporan.

BrandBrand
Public website launchedWebsite publik diluncurkan
InventoryInventaris
10+ inventory items managed10+ item inventaris dikelola
OperationsOperasional
Manual stock tracking replacedPencatatan stok manual digantikan
ScopeCakupan
Two business needs coveredDua kebutuhan bisnis tercakup
My contributionKontribusi saya

Product and responsive design, front-end development, inventory workflow design, Laravel and MySQL implementation, and production deployment.Desain produk dan responsif, pengembangan front-end, perancangan workflow inventaris, implementasi Laravel dan MySQL, serta deployment production.

Next.jsJavaScriptFramer MotionLaravel 13+4 more+4 lainnya
Read full case studyBaca studi kasus lengkap

Supporting software and experienceSoftware dan pengalaman pendukung

Additional projects showing my software, database, and operational experience.Project tambahan yang menunjukkan pengalaman software, database, dan operasional saya.

Sales report delivered by the WhatsApp monitoring bot
Reporting automationOtomatisasi laporan

WhatsApp Sales Monitoring BotBot Monitoring Sales WhatsApp

Scheduled sales and margin reports for 9 divisions that replaced a repetitive 10-minute manual step and reached staff on WhatsApp.Laporan sales dan margin terjadwal untuk 9 divisi yang menggantikan proses manual berulang selama 10 menit dan dikirim melalui WhatsApp.

Key outcomeHasil utama9 divisions receive the reportsLaporan menjangkau 9 divisi
Node.jsTypeScriptBaileysPostgreSQL+4 more+4 lainnya
Read case studyBaca studi kasus
Inventory and receiving mega-menu on the retail operations platform
System developmentPengembangan sistem

Retail Back-Office Operations PlatformPlatform Operasional Back-Office Ritel

A retail back-office platform that centralizes sales reporting, inventory workflows, store monitoring, and operational menus.Platform back-office ritel yang memusatkan laporan penjualan, workflow inventaris, monitoring toko, dan menu operasional.

Key outcomeHasil utamaOperational menus centralizedMenu operasional terpusat
HTMLCSSJavaScriptBootstrap+3 more+3 lainnya
Read case studyBaca studi kasus
Indogrosir Gorontalo branch prepared for its grand opening
Retail operationsOperasional ritel

Grand Opening, Gorontalo BranchGrand Opening Cabang Gorontalo

Three months of IT readiness for 50 POS devices, supporting a branch launch for roughly 300 staff with zero downtime.Tiga bulan persiapan IT untuk 50 perangkat POS, mendukung pembukaan cabang bagi sekitar 300 staf tanpa downtime.

Key outcomeHasil utamaThree-month readinessPersiapan tiga bulan
Oracle DBSQLPOSNetwork
Read case studyBaca studi kasus

Built around real work, not sample briefs.Dibangun dari kebutuhan nyata, bukan contoh project.

10+Field and supervisory usersPengguna lapangan dan supervisor
9Divisions reached by automated reportsDivisi menerima laporan otomatis
2 modesConnected web and mobile workflowWorkflow web dan mobile terhubung
LiveProduction systems built for daily workSistem production untuk pekerjaan sehari-hari

How I workCara saya bekerja

I turnoperational problems into systemspeople can depend on.Saya mengubahmasalah operasional menjadi sistemyang dapat diandalkan.

Lourensius Yudha Kristianto at workEngineering with operational contextEngineering dengan konteks operasional

I develop systems for daily operations: inventory tracking, request approvals, and automated reporting. My experience supporting retail teams helps me connect software decisions with real user needs.Saya mengembangkan sistem untuk operasional harian: pencatatan inventaris, persetujuan permintaan, dan laporan otomatis. Pengalaman mendukung tim ritel membantu saya menghubungkan keputusan pengembangan dengan kebutuhan nyata pengguna.

I focus on practical solutions: accurate information, dependable workflows, stable infrastructure, and tools people can use without a manual.Saya berfokus pada solusi praktis: informasi akurat, workflow andal, infrastruktur stabil, dan tools yang mudah digunakan tanpa membaca manual.

2023Career startedAwal karier
06Selected buildsKarya terpilih
03Core IT disciplinesBidang utama IT

ExperiencePengalaman

A path from web products to the operational systems behind them.Perjalanan dari produk web menuju sistem operasional di belakangnya.

April 2024 - Present (2 years 6 months)April 2024 - Sekarang (2 tahun 6 bulan)

IT System and Data SpecialistIT System and Data Specialist

Indomaret GroupIndomaret Group

SurabayaSurabaya

Developing operational systems, building SQL-based reporting, automating monitoring, and supporting business-critical retail IT operations.Mengembangkan sistem operasional, membangun laporan berbasis SQL, mengotomatisasi monitoring, dan mendukung operasional IT ritel yang kritis bagi bisnis.

View job descriptionLihat jobdesk
July 2022 - April 2023 (10 months)Juli 2022 - April 2023 (10 bulan)

Database Administrator InternDatabase Administrator Intern

PT. CENTRAL TEXINDOPT. CENTRAL TEXINDO

West Bandung RegencyKabupaten Bandung Barat

Designed and deployed a VMware-based virtualized server environment and documented its configuration for reliable daily operations.Merancang dan menerapkan lingkungan server virtual berbasis VMware serta mendokumentasikan konfigurasinya untuk operasional harian yang andal.

View job descriptionLihat jobdesk

Ways I contributeKontribusi yang saya bawa

My core work spans business software, custom web applications, databases, workflow automation, and production deployment.Pekerjaan utama saya mencakup software bisnis, aplikasi web custom, database, otomatisasi workflow, dan deployment production.

Business software and custom web applicationsSoftware bisnis dan aplikasi web custom

Purpose-built applications that turn business requirements into dependable tools for daily work.Aplikasi yang dirancang khusus untuk mengubah kebutuhan bisnis menjadi tools yang dapat diandalkan dalam pekerjaan sehari-hari.

PHP, Laravel, Node.js, TypeScript, React, Next.js

Workflow, approval, and operational systemsSistem workflow, persetujuan, dan operasional

Connected workflows for field activity, requests, approvals, inventory, fulfillment, and traceable records.Workflow terhubung untuk aktivitas lapangan, pengajuan, persetujuan, inventaris, realisasi, dan riwayat yang dapat ditelusuri.

Role-based Access, GPS, Maps, Inventory, PDF, Excel

Database and reporting automationDatabase dan otomatisasi laporan

Reliable data, efficient queries, and scheduled reports that reduce repetitive work.Data andal, query efisien, dan laporan terjadwal yang mengurangi pekerjaan berulang.

SQL, Oracle, PostgreSQL, MySQL, Supabase, WhatsApp API

Customer-facing business websitesWebsite bisnis untuk pelanggan

Responsive landing pages and company profiles for businesses that also need a clear public presence.Landing page dan company profile responsif untuk bisnis yang juga membutuhkan kehadiran publik yang jelas.

HTML, CSS, JavaScript, React, Next.js, Bootstrap

Verified credentialsKredensial terverifikasi

Supporting credentials. The project case studies above remain the primary evidence of my work.Kredensial pendukung. Studi kasus project di atas tetap menjadi bukti utama pekerjaan saya.

Choose the right next step.Pilih langkah yang sesuai.

Start a software project or discuss a development role. Choose the path that matches what you need.Mulai project software atau diskusikan posisi developer. Pilih jalur yang sesuai dengan kebutuhan Anda.

For businessesUntuk bisnis

Need software that fits your business?Membutuhkan software yang sesuai dengan bisnis Anda?

Tell me about the workflow, inventory process, reporting task, web application, or public website you need to improve.Ceritakan workflow, proses inventaris, pekerjaan laporan, aplikasi web, atau website publik yang ingin Anda perbaiki.

Discuss on WhatsApp ↗Diskusi via WhatsApp ↗View services →Lihat layanan →

For hiring teamsUntuk tim rekrutmen

Hiring for a development role?Mencari developer untuk bergabung dengan tim?

Review my experience, download my CV, or contact me about the role and working arrangement.Tinjau pengalaman saya, unduh CV, atau hubungi saya untuk membahas posisi dan pengaturan kerja.

Download CV ↓Unduh CV ↓Discuss a role ↗Bahas peluang kerja ↗GitHub ↗LinkedIn ↗