Complex products,made simple.

Portrait

Kristian David

the person behind the work

Being a software engineer here has meant following problems wherever they show up, then building the cleanest answer possible. That habit led to a variety of projects across web, mobile, and beyond, each with its own vibe. Let’s dive into those chapters and what was solved in each one.

Where the work happened

Companies behind the journey.

NEXA logo
CurrentJun 2025 – Present

NEXA

Fullstack Web Developer

  • Engineered responsive, user-facing applications with React.js and Next.js, improving performance and user experience.
  • Developed and optimized scalable web applications in an agile environment, contributing to systems serving 20,000+ users.
  • Built SaaS and enterprise systems on Laravel, including WhatsApp Business platforms, loyalty CMS for mall clients, and HRIS applications.
  • Shipped features for omnichannel platforms and real-time event systems, including coupon drawing and loyalty applications.
Dephilia Solution logo
Apr 2023 – Jun 2025

Dephilia Solution

Software Engineer

  • Led development of a scalable online election system supporting 700–800+ users with real-time vote counting and secure authentication.
  • Built event management platforms handling 1000+ participants, covering registration, submission, and evaluation workflows with Laravel and React.
  • Developed responsive frontend interfaces in Next.js, including participant dashboards and real-time announcement systems.
Swiftlead Indonesia logo
Dec 2023 – Feb 2025

Swiftlead Indonesia

Fullstack Developer

  • Developed an IoT-based smart farm management system with real-time monitoring of temperature and humidity.
  • Built web and mobile applications with data visualization, role-based access control, and automated notifications.
  • Improved operational efficiency through centralized monitoring and data-driven insights.

Shipped, not demoed

Nine systems built end to end: loyalty, ticketing, tournaments, messaging, IoT. Nothing here was a demo.

Nexa

ForYou

The internal CMS behind Sinar Mas Land's loyalty and rewards programme.

  • [Laravel]
  • [MySQL]
Read the case

NEXA

Nexa Corporate Padel Tournament

End-to-end tournament platform that carried 120+ competing pairs from registration to live scoring.

  • [Next.js]
  • [TypeScript]
  • [WebSocket]
Read the case

NEXA

Home of Sound

The official digital experience for an 11,000-attendee music festival.

  • [React.js]
  • [TypeScript]
  • [REST API]
Read the case

NEXA

NexaTiket

Ticketing platform covering the whole event lifecycle, from purchase to on-site entry.

  • [Python]
  • [CodeIgniter]
  • [MySQL]
  • [PWA]
Read the case

Nexa

FindPix

AI-powered event photo platform, searched by face recognition or BIB number.

  • [React.js]
  • [Framer Motion]
Read the case

NEXA

Nexa Messenger

WhatsApp Business SaaS platform, later migrated to a wallet-based pricing model.

  • [Laravel]
  • [MySQL]
Read the case

Nexa

Semarang Great Sale

City-wide shopping campaign connecting customers, merchants and tenants in one ecosystem.

  • [Laravel]
  • [CodeIgniter]
  • [MySQL]
Read the case

Swiftlead Indonesia

Swiftlead

IoT platform for swiftlet farmers, monitoring birdhouses through live sensors.

  • [Next.js]
  • [Express.js]
  • [Flutter]
  • [WebSocket]
  • [IoT]
Read the case

Sea Design

Sea Design

Print-on-demand storefront letting creators sell designs without holding inventory.

  • [WordPress]
Read the case

Built at Dephilia

Founder & Builder

Every great product starts with an idea. Dephilia helps turn those ideas into digital products that solve real problems, create better experiences, and give businesses room to grow. Five products have come out of it: three pieces of shared infrastructure the client work runs on, and two marketplaces.

PT Pelita Solusi Digital

Echo

Internal Messaging Infrastructure

A centralized communication layer built to handle transactional email and messaging across Dephilia's digital products and services.

Silos

Internal Storage Infrastructure

A centralized storage layer built to manage and deliver digital assets across Dephilia's applications and services.

Vessel

Internal Payment Infrastructure

A payment layer that connects Dephilia's digital products with payment providers through a unified system, simplifying payment operations.

PAD

Logo Marketplace

A digital marketplace designed to make professional logo design more accessible by connecting creators with businesses.

Surname

Link Shortener

A lightweight URL shortening service that turns complex URLs into simple, manageable links for easier sharing.

The studio behind the workNot Your Ordinary Solution.dephilia.com

Certified, not claimed

Two credentials, earned rather than listed. Everything else I know is in the work.

Amazon Web Services badge
Nov 2025 – Nov 2028

AWS Certified Cloud Practitioner

Amazon Web Services

Microsoft badge
Oct 2025 – Oct 2026

Microsoft Certified: Azure AI Engineer Associate

Microsoft

Passing it on

The work doesn't stop at the screen. Teaching, running sessions, and helping people get to grips with the tools I use every day.

  • Google Cloud Arcade Facilitator

    Facilitator2024

    Top 30of 100 facilitators

  • Microsoft ElevAIte by Dicoding

    Facilitator2025

    2ndof 5 facilitators

  • Google Cloud Arcade Facilitator

    Facilitator2025

    70+cohorts facilitated

  • Google Cloud Arcade Facilitator

    Facilitator2026

    Top 40of 400+ facilitators, milestone met