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Hi, I'm Putra !

Mathematics @ Universitas Indonesia

I'm obsessed with building.
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About
P Putra
Putra Muhammad RafyMathematics, Universitas Indonesia

Hi, I'm Putra, a Math undergraduate at Universitas Indonesia with an interest in quantitative thinking, Artificial Intelligence, and real-world problem solving. I'm fascinated by how mathematical ideas can be modeled, analyzed, and transformed into practical solutions across domains like learning, financial markets, and research.
My projects usually begin with a question like Can I make the solution much easier? Or make it much more efficient? That curiosity has led me to build market intelligence tools, adaptive learning systems, and AI-assisted research platforms that transform complex problems into practical software.
Learning, to me, is an iterative process. Building projects is how new ideas are explored, assumptions are tested, and understanding grows over time. AI has become an important part of that workflow, making it easier to prototype and iterate quickly, while mathematics remains the foundation for how I reason about complex problems.

Based in
Jakarta, Indonesia
Languages
Bahasa Indonesia, English
Studying
Mathematics, Universitas Indonesia
Curious about
Mathematics · Artificial Intelligence · Finance · Politics · History
Skills
Programming & Development
Math & Scientific Computing
R Octave Wolfram
Intelligent Systems
LangChain
Data Analysis & Visualization
Matplotlib
Tools
Git Docker
Operations
Experience

Every stop, something learned.

Deputy of Administrative & Finance
BPM FMIPA UI
Apr 2026 - Present · Depok, West Java

Reviewing official letters from department-level student organizations before they go up to the faculty. Every event letter needs BPM approval first, so the job is checking each document for the right format, completeness, and compliance, then clearing it for the Chairman's signature. The same routine that Cek Surat was built to automate.

AdministrationDocument ReviewFinancial AnalysisFinancial Budgeting
Member
Google Developer Groups on Campus UI (GDGoC UI)
Dec 2024 - Present

Actively networking with industry professionals to build connections and gain career insight. Regularly joins knowledge-sharing sessions with peers covering technical trends and best practices. Uses the community as an ongoing channel to stay current on tools and approaches outside the classroom.

Data AnalysisComputer Programming
Deputy Head of Design
Math League 2026
Jul 2025 - Mar 2026 · Depok, West Java · Hybrid

Overseeing the complete design workflow for all Math League 2026 social media platforms. Held final sign-off on every piece of design content before it went live, balancing visual consistency with turnaround speed. Worked closely with the broader team to keep the competition's public-facing identity sharp across the whole run.

CanvaDesign
Staff of Roadshow
LOGIKA UI
Aug 2025 - Dec 2025 · Depok, West Java · Hybrid

Promoting LOGIKA UI's activities and competitions directly to high schools. Traveled to schools to present and pitch the competition to students, handling the public-facing side of outreach. Helped build early excitement and turnout for the event well ahead of competition day.

Public SpeakingPublic Relations
Staff of Multimedia
Pengenalan Departemen Matematika (PDM) 2025
Jul 2025 - Sep 2025 · Depok, West Java · On-site

Managing the end-to-end design process for PDM 2025's documentation. Produced and coordinated visual materials covering the entire department introduction event. Presented the department introduction directly to incoming Mathematics freshmen at Universitas Indonesia.

FigmaDesign
Head of Creative Media
Eksposebas SMAN 16 Bekasi
Dec 2024 - Jan 2025 · Bekasi, West Java · On-site

Running the complete design workflow for all Eksposebas social media platforms. Held final responsibility for the quality and approval of every design uploaded under the event. Set the visual direction for the event's entire public-facing presence.

CanvaDesign
Education Mentor
English Club SMAN 16 Bekasi
Nov 2022 - Nov 2023 · Bekasi, West Java · On-site

Planned the agenda for every club meeting and built the presentation materials participants learned from. Kept sessions structured so members actually practiced the language instead of just attending.

EnglishPublic Speaking
Education Mentor in Mathematics & Chemistry
Tutor Sebaya SMAN 16 Bekasi
Aug 2022 - Apr 2023 · Bekasi, West Java · On-site

Peer-tutored fellow students through the mathematics and chemistry chapters they struggled with most. Broke lessons down into focused walkthroughs of specific topics and stayed with each student until the concepts actually held.

TeachingPublic Speaking
Awards
2025
Semifinalis YED UI BCC 2025
YED UI

Advanced to the semifinals of YED UI's Business Case Competition with team Casecrafters (three people). The case: helping PT Bina Pertiwi, an Astra Group company that distributes Komatsu forklifts, choose between lead-acid, lithium, and hydrogen power. We recommended lithium-ion and hydrogen fuel cells as the long-term play, backed by emissions, safety, and total-cost analysis.

View certificate ↗
2026
Finalist, International MSS Consulting Case Challenge 2026
Management Student Society FEB UI

Finalist in the Undergraduate Category. Developed and presented a strategic recommendation for Garuda Indonesia to improve customer conversion through pricing transparency, payment accessibility, and loyalty initiatives, supported by market and financial analysis.

View certificate ↗
Projects
A working archive

Things I built from questions worth answering.

From market prediction to learning tools, each project turns a messy problem into something people can use.

Capstone
01

QQQ MLP Predictor

Data Science capstone: can commodity and crypto markets help predict whether the Nasdaq-100 (QQQ) closes up or down tomorrow? With only ~985 trading days of data, the model also had to stay small enough not to overfit.

Screened ten assets by correlation and kept the four carrying independent signal: copper, lithium, uranium, and Bitcoin. Engineered stationary log-return features (ADF-tested), fed 3-day lags into a compact 32-16 MLP with dropout, and used a chronological 80/20 split with explicit leakage checks.

56.85% directional accuracy on unseen data, better than a coin flip with statistical significance (binomial p = 0.032). The size of each move stayed unpredictable (negative R²), and the report says so plainly: the signal is in the direction, not the magnitude.

PythonPandasyfinanceTensorFlow
View Project ↗
PPT Tugas Akhir Sains Data preview
Capstone
02

Transit Optimizer

Graph theory capstone: Universitas Indonesia to Blok M can be reached through dozens of KRL, MRT, LRT, and Transjakarta combinations, and the cheapest route is rarely the fastest. Which one is optimal when fare and time both matter?

Modeled the network as an Ostensive Public Transportation Graph: stations and vehicle types as nodes, edges weighted by distance and travel time, with a fare function per mode (flat, distance-stepped, or per-station). Both objectives were min-max normalized into one score, F = 0.5Fp + 0.5Ft, then Dijkstra found the minimum-score path.

Ranked ten candidate routes and surfaced the optimum: Rp9,500 and 49.3 minutes over 20.9 km with two transfers, via KRL to Manggarai and Sudirman, then Transjakarta to Blok M. The winning route is also the outright cheapest of the ten.

PythonDijkstraMathematical ModelingOptimization
View Project ↗ Live implementation ↓
Transit Optimizer Task Force preview

Every project up there started as a question that deserved a real answer.

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Every project up there started as a question that deserved a real answer.

Share your idea, and let's build it together from start to finish.

Got a
question worth counting?