Open to opportunities · Remote & Medan, Indonesia

Winsten Coellins

Fullstack Software Engineer

I develop reliable software from concept through launch—focused on clear architecture, thoughtful user experiences, and outcomes teams can measure and trust.

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Selected work

Projects that ship

Product systems for logistics, scheduling, property, education, and more—built end to end.

Logistics · 2026

Freight Forwarding System

PT. Mitra Laju Interocean

Shipment bookings, documentation, tracking, and customs with role-based access for admins, operators, customers, and agents.

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Sports · 2025

Court Scheduling System

Quantum Sports

Court booking, payments, and reservations—plus an admin dashboard for scheduling, bookkeeping, and analytics.

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Real Estate · 2026

Property Management System

Cherry Sky Living

Properties, units, leases, rent, and renewals in one dashboard for landlords and tenants.

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Education · 2024

Education Management System

Yanks & Brits English Institute

Courses, enrollment, scheduling, payroll, and performance tracking in one operations platform.

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Marketing · 2025

Content Management System

Chez Bakery & Cafe

Admin tooling for menu categories and items that publishes cleanly to a public site.

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Industrial · 2026

Corporate Website

CV. Chinergy Shenindo

Company profile for services, products, and projects—helping prospects learn and inquire.

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Career

Experience

Roles shipping products, mentoring teams, and building systems that hold up in production.

Fullstack Software Engineer

Wilmar Consultancy Services

2023 — Present

Leading and mentoring teams in the migration of enterprise applications from OutSystems to a modern Next.js and NestJS architecture, leveraging AI-assisted development to accelerate delivery, enhance code quality, and improve scalability and maintainability.

Fullstack Software Engineer

Umify Pte Ltd

2022 — 2023

Promoted from Intern to Software Engineer in recognition of strong technical contributions and performance, including leading the development and delivery of an MVP that enabled a successful project launch and accelerated time-to-market.

Web Developer

Collaboration For Good, Inc.

2022 — 2023

Designed and developed a responsive event website using HTML, CSS, and JavaScript to support one of Madison’s largest community events, enhancing attendee engagement and access to event information.

IT Assistant

University of Wisconsin-Madison

2021 — 2022

Established a barcode scanning system to optimize item check-in and check-out workflows, while developing accessible web solutions using semantic HTML to ensure accurate screen-reader support for students with disabilities.