Patent
Perangkat Smart Meter Berbasis Internet of Things (IoT) untuk Monitoring Konsumsi Energi Listrik
An IoT-based smart meter for monitoring electricity consumption: the kind of system where the data path has to be right, not approximately right.
Nine years of software development, narrowed down to one platform.
I started in firmware engineering, then moved into web development, and studied Information Engineering at Universitas Gadjah Mada. The through-line has always been the same: systems that talk to hardware or data, where being wrong is expensive.
That line led to trading. TradingView is a platform with real constraints (Pine's limits, alert delivery, repaint behavior, the gap between a chart and an executed order), and solving those constraints properly is an engineering problem, not a design problem.
Today that is the whole job: Pine Script indicators, strategy testers and the automation layer that carries a TradingView signal to PineConnector, TradeAdapter, a webhook or a phone. So far that adds up to more than thirty clients in at least twelve countries.
- years in development9+Firmware, web, trading
- Pine scripts built500+Indicators & testers
- clients32+From 12+ countries
- years in trading software4+Pine Script & automation, since 2022
- Background
- B.Eng. Information Engineering, Universitas Gadjah Mada, 2015–2020. Firmware and software developer since 2019.
- Company
- Owner of WJT Agency (since January 2024), a small studio for Pine Script development and trading automation.
- Languages
- English (fluent), Indonesian (native)
- Clients in
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United States
Australia
United Kingdom
Canada
Germany
United Arab Emirates
Bangladesh
Austria
Estonia
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China
How I work
Four habits that keep projects out of trouble.
Free consultation first
Before any quote: a free review of your idea, your spec, or the script you already have. If the spec will not survive contact with a live market, I say so before you pay for it.
Documented code
Commented, structured, maintainable Pine. The handover includes documentation of what was built, so the script stays workable after the engagement ends.
Plain technical feedback
I tell you what is possible, what is risky, and what it will cost.
Delivery you can predict
Fixed scope, milestones, and a demo before the final version. When a client needed it fast, a fix has shipped the same day and a strategy in two days.
Track record
Where I have worked.
A short history of the roles behind the Pine Script work.
2024 – now
WJT Agency · Owner
A small studio for Pine Script development and trading automation.
2022 – now
Freelance Pine Script developer
Fifty-eight contracts for traders, indicator vendors and analytics clients.
2019 – 2023
Lunar Inovasi Teknologi · Firmware Developer
Embedded and firmware work: IoT devices, sensors and the systems around them.
Jan – Feb 2019
PT Telekomunikasi Indonesia · Web Developer
A short web development engagement before moving into firmware.
Before TradingView
Firmware, embedded systems, and a patent for smart meters.
Most of my career was in hardware and embedded work, where a mistake reaches the physical world. That background is why I am careful about non-repainting logic and edge cases in a live market.
Publication
Development of Smart Energy Meter Based on LoRaWAN in Campus Area
LoRa and LoRaWAN research taken from protocol study to deployed system: STM32 and ATmega end nodes, a Raspberry Pi gateway, and the network and application servers behind them.
Awards
1st Winner at KompasGramedia HackGen, Code Jam
A national programming competition where the code category is judged on working, deployed software.
Sakura Science Program (student exchange)
A science exchange placement in Japan.
Teaching & certifications
Digital Talent Scholarship (instructor)
Taught Python programming to public cohorts across Indonesia, as an assistant and then a lead instructor.
Certified in Django web applications, databases for back-end development, version control and Python.
Next step
Have an idea, or a script that needs work?
Send your idea, a specification document, a brief video or an unfinished script. I'll review it and send you a quote and timeline, free and with no obligation.