Alfiki Diastama

Software Engineer

Building Privacy-First Web Products & Scalable Systems

Founder of Dely Labs. Creator of Dely PDF. I build high-standard applications that prioritize privacy.

I turn early-stage ideas into clean, scalable, and production-ready systems. From shaping system architecture to writing maintainable code, I’m used to building products in fast-moving, resource-constrained environments—where clarity, ownership, and execution matter.

Technical Arsenal

A curated list of technologies I use to build robust applications.

Core Competencies

Frontend Engineering

Building complex, interactive UIs with focus on performance & accessibility.

Applied Machine Learning

Bridging the gap between research models and production-ready inference.

Backend & System Design

Architecting scalable backend solutions and database schemas.

Primary Tech Stack

React

Laravel

TensorFlow

Python

Java

Tailwind CSS

Nuxt

SQL

Supporting Tools

Git

Docker

Figma

Firebase

Cloudflare

Postman

Selected Works & Products

Bridging the gap between complex engineering and intuitive user experience.

Web App20+ Tools • Local-First

Dely PDF

The Challenge Uploading sensitive documents to online PDF tools exposes user data to privacy risks and violates strict data protection regulations.

My Solution Engineered a local-first browser processing ecosystem leveraging Web Workers and IndexedDB.

The Impact 100% data privacy with 0 bytes uploaded to servers, zero hosting/processing overhead, and off-grid offline capability.

React 19React Router v7ZustandTailwind CSS 4pdf-libIndexedDB

Read Case Study Visit Site

Web App1st Place Hult Prize

Narajiwa

The Challenge Synchronizing complex schedules between psychologists & clients often caused double-bookings.

My Solution Built a concurrency-safe booking system with atomic locking & real-time sockets.

The Impact Automated the entire clinical workflow from booking to payment verification.

LaravelMySQLBootstrapWebSocket

Read Case Study Visit Site

Dely Labs Products

Dely Sign

A privacy-first PDF signing tool designed for performance and zero-knowledge security using GPU acceleration.

#Vue 3 #Vite #Konva #pdf-lib #IndexedDB

Dely Terbilang

An advanced number-to-text converter capable of handling extreme precision (up to 64 digits).

#JavaScript #BigInt #SheetJS

Dely Compare

Text and code comparison tool utilizing Diff algorithms to highlight changes and detect plagiarism.

#Vue 3 #Diff Algo

Dely Kit

A suite of text manipulation tools (Case Converter, Cleaner, Sorter) designed for quick developer tasks.

#Vue 3 #Regex

View All Projects Archive

Work Experience

Information Technology Developer

MIU Global Pte Ltd • Internship

Jan 2026 - May 2026

Built responsive websites using WordPress (ACF Pro) and Framer CMS, deploying advanced features like a real-time AJAX search module with custom input debouncing. Optimized platform performance by migrating legacy jQuery to Vanilla JS, writing React code overrides to bypass Framer limits, and building Python scripts to automate bulk data migrations while managing end-to-end QA, documentation, and production deployments.

Software Engineer

Narajiwa • Part-time

Jun 2025 - Present

Engineered the end-to-end telemedicine infrastructure, orchestrating complex availability algorithms, secure payment gateways, and atomic booking transactions to ensure a seamless, conflict-free user experience.

Machine Learning Mentor

Coding Camp (DBS Foundation) • Contract

Jan 2025 - Apr 2025

Guided a cohort of students through the full ML lifecycle, from data preprocessing to cloud deployment. Facilitated code reviews and technical workshops, resulting in the successful completion of machine learning capstone projects.

Lecturer Assistant

Universitas Sebelas Maret • University

Aug 2022 - Jan 2025

Facilitated lab sessions for 3 core Computer Science courses (DSA, OOP, Python), mentoring over 100+ students. Evaluated complex algorithms and provided actionable code feedback to improve student problem-solving skills.

Founder

Documently • Business

Jan 2022 - Oct 2025

Bootstrapped a digital document service business from zero. Developed a high-performance landing page optimized for SEO and speed, successfully channeling high-intent traffic directly to WhatsApp for rapid order fulfillment.

Education

Universitas Sebelas Maret

2021 - 2025

Bachelor of Computer Science (Informatics)

Focus on Artificial Intelligence and Software Engineering. Active in Gemastik and Practicum Assistant.

Bangkit Academy led by Google, Tokopedia, Gojek, & Traveloka

Aug 2023 - Jan 2024

Machine Learning Cohort (Distinction Graduate)

Capstone Project: EUY App (Top 50 Product). Mastered TensorFlow, Python, and Model Deployment.

Honors & Awards

1st Place Gemastik XVI 2023 (ICT Scientific Paper)

Best Paper Award Gemastik XVI 2023

1st Place Hult Prize On Campus UNS 2024 (Narajiwa)

1st Place Airlangga Ideas Competition 2023

2nd Place Medical Science Festival UNNES 2024

Innovation Excellence Awardee FATISDA UNS 2024

Distinction Graduate - Bangkit Academy 2023

Research & Publications

Where Machine Learning theory meets practical efficiency.

Gold Medal

AGU-NET: Attention Ghost U-Net

Gemastik XVI 2023 - Gold Medal & Best Paper

Developed a lightweight segmentation model (1.17M parameters) prioritizing memory efficiency, proving high-performance AI is viable in resource-constrained environments.

View Paper

ACMU-Net: Efficient Architecture for Polyp Segmentation

IEEE (Nov 2024)

Designed a real-time efficient deep learning architecture combining ConvMixer and Attention mechanisms, achieving superior accuracy for automated medical diagnosis.

View Paper

Improved Factorized Residual U-Net

IEEE (Nov 2024)

Engineered an enhanced ResNet backbone with residual factorization, significantly improving feature extraction capabilities for complex biomedical imagery.

View Paper