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Jumina Cahyani

@juminacahyani

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Full-stack developer delivering production web systems with .NET MVC and Python.

Indonesia

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What I'm looking for

I’m looking for a team where I can own end-to-end web features, improve performance, and write clear technical specs. I want to build production-ready systems, collaborate closely across roles, and keep growing in full-stack development.

I’m a full-stack developer with 3+ years of experience building production web systems across .NET MVC and Python. I deliver end-to-end solutions across oil & gas, e-commerce, healthcare, and education, with a strong focus on building reliable, user-centered features.

In my recent work, I rebuilt critical oil & gas production analytics dashboards from scratch to pass QA and documented requirements with a Functional Specification Document adopted by the team. I’ve also improved performance and outcomes—cutting flash sale page load time from 10 seconds to 3 seconds using AJAX, and building a QR code-based medical check-up result system for instant access.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Web Developer

Current

PT. Sila Teknologi Utama

Sep 2023 - Present (2 years 11 months)

Rebuilt an oil & gas production analytics dashboard and toolbox from scratch after a failed QA implementation. Implemented performance improvements and developed QR code-based medical results and a web examination system with anti-cheat and automated real-time scoring.

Full Stack Web Development AJAX QR Based Medical Results Performance Optimization QA

Instrument and Control System Apprentice

PT. Pertamina Hulu Mahakam

Sep 2022 - Jun 2023 (9 months)

Built a turbo compressor monitoring dashboard using PI ProcessBook to visualize real-time sensor data from multiple sources. Implemented an automated alert system using standard deviation analysis to flag threshold breaches and support preventive maintenance.

Monitoring Alerting Statistical Analysis Standard Deviation Preventive Maintenance

Data Scientist Intern

PT. Media Kreasi Abadi

Feb 2022 - Jul 2022 (5 months)

Analyzed multi-dimensional tourism data across East Kalimantan (2020–2021) to identify regions with high tourism growth potential, including visitor trends and spending estimates. Built interactive dashboards in Google Data Studio and Tableau and presented data-driven findings to internal stakeholders for regional planning.

Python Tourism Data Analysis Statistical Analysis Data Visualization Google Data Studio Tableau Dashboarding Regional Development Insights

System Analyst Intern

Institut Teknologi Kalimantan

May 2021 - Jun 2021 (1 month)

Authored complete software documentation for a room booking system, including SDP, SRS, SDD, STD, and a User Manual, ensuring requirements-to-testing traceability. Conducted requirement-gathering sessions with institutional stakeholders to translate business needs into technical specifications.

Software Documentation STD Requirements Gathering System Analysis booking systems