Open to freelance & new opportunities

Ahmed Nizhan Haikal — Backend & Full-Stack Developer

Building robust backend systems & seamless experiences.

Software engineer who builds full-stack and backend systems end to end ranging from a geospatial vehicle-tracking platform to event-driven microservices with .NET, Node.js, Java, and React. I care about clean data models, secure authentication, and APIs that hold up in production.

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Work Experience

Fullstack Developer BSD, Indonesia

Built a full-stack logistics platform that handled 5,000+ orders a day with live location tracking for every vehicle in its respective order, using a React 19 (TanStack Start) frontend and an ElysiaJS/Bun backend in a pnpm monorepo.
Improved routing accuracy by mining location data and generating GraphHopper via-points between stops, so routes followed best routing from historical data.
Modeled the geospatial data in PostgreSQL with PostGIS (through Prisma) to store and query live vehicle positions and location-based alerts.
Built secure JWT authentication (Web Crypto API) with automatic token refresh coordinated across browser tabs.
Delivered a responsive, localized interface using TanStack Query and Router, Ant Design, and Tailwind CSS.

Software Developer Jakarta, Indonesia

Engineered a scalable full-stack business digitalization platform using React and .NET to streamline enterprise workflows.
Architected database schemas and system data flows for a distributed microservices architecture, ensuring high availability.
Implemented secure authentication, CRUD operations, and strict Role-Based Access Control (RBAC) protocols.
Developed dynamic PDF generation with templating capabilities for flexible business needs.
Built event-driven services using RabbitMQ for streamlined business workflows.

Apple Platform Developer South Tangerang, Indonesia

Engineered native iOS and iPadOS applications utilizing Swift, SwiftUI, and SwiftData with a focus on reactive, user-centric interfaces.
Participated in end-to-end product lifecycles, translating user research and prototyping into highly functional UI/UX designs.
Architected cloud-based backend services and REST APIs leveraging FastAPI and Supabase for real-time data synchronization.

Backend Developer Jakarta, Indonesia

Developed robust backend APIs and internal reporting systems utilizing Java Spring Boot, optimizing secure data retrieval.
Created comprehensive ERD and DFD documentation to bridge complex business requirements with technical system implementations.
Collaborated cross-functionally to ensure strict data accuracy, system reliability, and seamless API integrations.

Software Engineer Jakarta, Indonesia

Designed and implemented a highly normalized MySQL database schema to securely support core application features.
Built scalable RESTful backend services using Node.js to handle complex business logic and streamline data access.
Acted as technical PIC, coordinating development tasks, conducting code reviews, and effectively communicating requirements with stakeholders.

Freelance Full-Stack Developer

Medical Visual Question Answering

Developed a medical visual question answering system using TensorFlow. Implemented a custom image upload interface and integrated with a medical knowledge base API to provide accurate answers to medical questions.

Python
TensorFlow
Medical AI
Fullstack Development

Freelance iOS Developer

Contraction Timer iOS App

Designed and developed a native iOS utility app with a highly reactive UI for calculating contraction frequency. Features include custom tab views and intuitive swipe actions for editing and deleting records.

SwiftUI
Reactive UI
Mobile Development
UX/UI

Skills & Expertise

Backend & API Development

Architecting scalable microservices, RESTful APIs, and event-driven systems.

C#.NETNode.jsJavaSpring BootPythonFastAPIGo

Frontend & Mobile

Building reactive web interfaces and native iOS applications with custom UI components.

ReactTypeScriptTanStackTailwind CSSSwiftSwiftUISwiftData

Database & Architecture

Designing normalized schemas and managing data flow for complex applications.

PostgreSQLMySQLPrismaSupabaseRabbitMQMicroservices

Soft Skills & Leadership

Coordinating technical requirements, reviewing code, and problem-solving in team environments.

LeadershipCommunicationProblem SolvingTeam Collaboration

Education & Background

Education

Universitas Pembangunan Nasional Veteran Jakarta

Bachelor of Computer Science

Jakarta, Indonesia

Awards

Gemastik Finalist

Top 10 nationally in Kemendikbudristek's Gemastik IT competition.

Project: ANKERSAL (Bootstrap, PHP)

Nov 2022