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Hi, I’m Yonathan, a software engineer with over 11 years in IT. I currently lead development at One Code Solution, building scalable enterprise systems and collaborating across product, architecture, and governance teams for clients like Pertamina. I specialize in back-end .NET, modern front-end JavaScript, and cloud-enabled architectures, with a track record delivering large-scale ERP and education platforms. I enjoy solving complex problems with AI-driven data integration, robust design patterns, and thoughtful governance. I’m passionate about mentoring teammates, delivering value through reliable software, and continuously learning new tech to improve both product outcomes and team growth.…Hi, I’m Yonathan, a software engineer with over 11 years in IT. I currently lead development at One Code Solution, building scalable enterprise systems and collaborating across product, architecture, and governance teams for clients like Pertamina. I specialize in back-end .NET, modern front-end JavaScript, and cloud-enabled architectures, with a track record delivering large-scale ERP and education platforms. I enjoy solving complex problems with AI-driven data integration, robust design patterns, and thoughtful governance. I’m passionate about mentoring teammates, delivering value through reliable software, and continuously learning new tech to improve both product outcomes and team growth.

Yoyo Siyoyo

Web Developer, Programmer, Game Developer, +2

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Hi, I’m Yonathan, a software engineer with over 11 years in IT. I currently lead development at One Code Solution, building scalable enterprise systems and collaborating across product, architecture, and governance teams for clients like Pertamina. I specialize in back-end .NET, modern front-end JavaScript, and cloud-enabled architectures, with a track record delivering large-scale ERP and education platforms. I enjoy solving complex problems with AI-driven data integration, robust design patterns, and thoughtful governance. I’m passionate about mentoring teammates, delivering value through reliable software, and continuously learning new tech to improve both product outcomes and team growth.…Hi, I’m Yonathan, a software engineer with over 11 years in IT. I currently lead development at One Code Solution, building scalable enterprise systems and collaborating across product, architecture, and governance teams for clients like Pertamina. I specialize in back-end .NET, modern front-end JavaScript, and cloud-enabled architectures, with a track record delivering large-scale ERP and education platforms. I enjoy solving complex problems with AI-driven data integration, robust design patterns, and thoughtful governance. I’m passionate about mentoring teammates, delivering value through reliable software, and continuously learning new tech to improve both product outcomes and team growth.

Available to hire

Hi, I’m Yonathan, a software engineer with over 11 years in IT. I currently lead development at One Code Solution, building scalable enterprise systems and collaborating across product, architecture, and governance teams for clients like Pertamina. I specialize in back-end .NET, modern front-end JavaScript, and cloud-enabled architectures, with a track record delivering large-scale ERP and education platforms.

I enjoy solving complex problems with AI-driven data integration, robust design patterns, and thoughtful governance. I’m passionate about mentoring teammates, delivering value through reliable software, and continuously learning new tech to improve both product outcomes and team growth.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Work Experience

Lead Developer at One Code Solution

June 1, 2025 - Present

Leading multiple enterprise projects for Pertamina, including Imeals catering management, Whistleblower anonymous reporting, PRIME-BOD with digital order and signing, MuroKOBA fraud surveillance, Cormap corporate mapping, and SUPREME audit platform. Implemented multi-stage approvals, board-level workflow, and digital signing with Privy/Idaman SSO. Working on server-rendered and SPA components with .NET 8, EF Core, SignalR, OpenID Connect, and Power BI integrations.

Independent Researcher at Experience Research & Development – ORCiD: 0009-0008-5999-7366

March 1, 2025 - Present

Independent research in AI/ML; ORCiD and academia profiles. Journal reviewer for Multimedia Tools and Applications (Scopus Q1) and SOCA (Scopus Q2). Ongoing contributions to Zenodo and SSRN platforms.

AI/ML Engineer (Applied) at ADVIS

November 1, 2025 - Present

Part-time AI/ML engineer developing UhibulQuran Recitation Feature (real-time Arabic ASR) using Whisper, with custom NLP algorithms for word-level mistake detection, real-time feedback via SignalR, and session tracking. Architecture follows Clean Architecture with CQRS and adapter pattern for multi-provider ASR support; comprehensive unit/integration/negative testing.

Independent Contractor

March 1, 2025 - May 31, 2025

Prospecting, client presentations, and proof-of-concept projects to analyze customer challenges and validate feasibility of AI-driven and system enhancements.

Consultant at Invincix (Aeros – Culturatech)

August 1, 2024 - March 31, 2025

Maintained and developed new modules for Aeros Live, Aeros ERP, Aeros Connect, and Aeros Vision; improved synchronization performance between Aeros ERP and 3rd party APIs by optimizing data transfer and SQL performance; proposed AI solutions for poultry data management.

Software Engineer at Lyte Ventures

April 1, 2022 - May 31, 2024

Maintained core LP1 application, built new modules, and integrated systems. Achievements include increasing batch payment processing throughput (10,000 transactions per batch), implementing referral and boost modules, EF Core query optimization for admin reports, and establishing JWT-based SSO for cross-domain Laravel/.NET Core interactions.

Software Engineer at KooBits

January 1, 2020 - April 1, 2022

Developed Endpoints for Teacher/Student/Reseller Portals; maintained ProblemSums site; designed payment gateway; built multiple API endpoints (Student/Teacher/Mobile/Admin/Reseller) to support >350,000 concurrent requests across modules.

Regional Manager at Accelist

January 1, 2019 - December 31, 2019

Managed operations for Yogyakarta region, recruited and mentored programmers, tracked project progress, and established Accelist office presence in Yogyakarta for Indonesian clients including government and automotive sectors.

Team Member at Mitrais

January 1, 2012 - December 31, 2017

Contributed across multiple projects including EarthCheck benchmarking apps, v3 Leisure open booking framework, Alive Mobile for Rentokil Initial, and Mitrais Finance/Medi cal suites. Recognized as Mitrais Champion for Android and mobile data management initiatives (2014-2017).