Daffa Nabil Hartono

Experience

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  Project Artisan

  Mar 2019 - Dec 2024

  Founder
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  Sunartha

  Jun 2021 - Sept 2021

  Full-stack Developer

  Continued development on an existing platform, performing bug fixes and codebase optimization. Collaborated with system analysts to enhance user experience and estimate project timelines. Delivered solutions aligned with client expectations and technical constraints.

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  PT Adyatma Cendekia Sinergi Abadi

  Aug 2021 - Jun 2023

  Software Engineer

  Handled full-cycle development of complex client applications. Conducted unit and end-to-end testing to validate business logic. Delivered clean, maintainable code and produced detailed technical documentation to support long-term scalability.

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  PT Bangun Kreatif Abadi

  Sept 2021 - Jul 2022

  Technical Staff

  Built a responsive company website and provided technical consultation to internal stakeholders. Participated in client meetings, handled technical troubleshooting, and ensured software solutions aligned with business requirements.

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  Kelas Pintar

  Jun 2023 - Jun 2024

  Optimized build pipelines to be 50% faster and more reliable. Developed responsive interfaces, defined APIs, and integrated third-party services. Collaborated closely with UI/UX designers and product managers to deliver scalable features on time. Wrote and maintained technical documentation to ensure cross-team clarity. Boosted B2B user satisfaction by 40%–80% by developing robust services supporting 10,000+ users. Defined architectural solutions, designed APIs, and implemented scalable backend and frontend features using industry best practices.

  • Full-Stack Engineer (Backoffice)

    Jan 2024 - Jun 2024

  • Full-Stack Engineer (End-User)

    Jun 2023 - Feb 2024
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  PT Vale Indonesia Tbk

  Nov 2024 - Nov 2025

  Balanced technical leadership with product strategy, overseeing architecture decisions while managing backlog prioritization, sprint planning, and feedback iterations. Delivered measurable impact, including:• 30% improvement in application performance by identifying and resolving architectural bottlenecks.• 30% reduction in bug escape rate by initiating and leading automated regression testing implementation.• Ensured project alignment with client expectations through proactive communication and agile planning cycles. Show less Led the full-stack development of a cloud-native platform with a service-oriented architecture, delivering modular, scalable solutions across both frontend and backend layers.• Designed and implemented core backend services (Authentication, Logging, File Management, Reporting, Asset Handling) using a modern PHP framework, with clear separation of concerns and reusable service patterns.• Developed a secure API gateway layer that managed authentication, request throttling, and intelligent routing across multiple internal services.• Engineered performant, responsive web interfaces using a component-based JavaScript framework, integrating seamlessly with backend APIs to support real-time operations and administrative workflows.• Applied state management strategies and UI performance optimizations to ensure a smooth user experience under varying load conditions.• Integrated monitoring and observability tools (Grafana, Prometheus, ELK) for real-time insights, anomaly detection, and operational transparency.• Implemented distributed caching with Redis and designed load balancing mechanisms to enhance system resilience and reduce latency by over 40%.• Took ownership of code quality and stability in a QA-less environment by enforcing rigorous testing practices, validation mechanisms, and automated error handling across the stack.• Collaborated with stakeholders across product, infrastructure, and development to continuously refine system architecture based on performance feedback and evolving requirements. Show less

  • Technical Project Manager

    Jan 2025 - Nov 2025

  • Senior Frontend Developer

    Nov 2024 - Sept 2025

  • System Architect

    Nov 2024 - Jan 2025