I'm a results-oriented Software Engineer with 4+ years of experience in Mobile Development (Flutter, Kotlin) and IoT integration (BLE, MQTT). I thrive on delivering scalable applications for healthcare and e-commerce, applying Clean Architecture to keep code robust and maintainable. I'm passionate about bridging hardware and software to build high-performance mobile solutions. In my current role at Wowrack Indonesia, I engineered IoT-enabled apps with real-time data streaming and BLE connectivity, while my previous work at Propnex+ and Maven Digital Asia focused on stability improvements and feature-rich mobile experiences.…

Achmad Yu Krisna

I'm a results-oriented Software Engineer with 4+ years of experience in Mobile Development (Flutter, Kotlin) and IoT integration (BLE, MQTT). I thrive on delivering scalable applications for healthcare and e-commerce, applying Clean Architecture to keep code robust and maintainable. I'm passionate about bridging hardware and software to build high-performance mobile solutions. In my current role at Wowrack Indonesia, I engineered IoT-enabled apps with real-time data streaming and BLE connectivity, while my previous work at Propnex+ and Maven Digital Asia focused on stability improvements and feature-rich mobile experiences.…

Available to hire

I’m a results-oriented Software Engineer with 4+ years of experience in Mobile Development (Flutter, Kotlin) and IoT integration (BLE, MQTT). I thrive on delivering scalable applications for healthcare and e-commerce, applying Clean Architecture to keep code robust and maintainable.
I’m passionate about bridging hardware and software to build high-performance mobile solutions. In my current role at Wowrack Indonesia, I engineered IoT-enabled apps with real-time data streaming and BLE connectivity, while my previous work at Propnex+ and Maven Digital Asia focused on stability improvements and feature-rich mobile experiences.

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Skills

Experience Level

Android
Expert
Dart
Expert
Flutter
Expert
Github
Expert
SQL
Expert
Kotlin
Expert
Socket.IO
Expert
API
Expert
Web Design
Expert
Java
Expert
iOS
Expert
Jira
Intermediate
Python
Intermediate
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Language

Indonesian
Fluent
English
Advanced

Work Experience

Mobile Engineer at Wowrack
April 1, 2023 - Present
Creating a Flutter app with the Provider architecture, ensuring the feature is stable before releasing it to the store. IoT Stadium is a mobile app designed for connecting IoT devices—allowing users to view, control, or edit devices, stream data via sockets, and interact with BLE devices.
Freelance Flutter Developer at Propnext Indonesia
March 1, 2023 - June 30, 2023
Maintained the PropNex Plus app by enhancing overall stability, optimizing performance, and delivering new features to the production store, ensuring a seamless experience for end users.
Jr. Mobile Developer at Maven Digital Asia
March 1, 2022 - March 1, 2023
developed and maintained Android and Flutter applications across various domains such as healthcare, e-commerce, social media, IoT, and booking systems. I collaborated with project managers to implement new features, integrate APIs, and deliver stable applications using Kotlin (MVVM) and Flutter (Provider) architectures. Throughout projects like PropNex Plus, Collins (restaurant booking), PinGo (social photo sharing), NTU (campus facility booking), VinGeek (e-commerce), Seraphim (healthcare), and HCA Hospice, I focused on enhancing performance, stability, and user experience while ensuring smooth deployment to production stores.
Mobile Developer Internship at Maven Digital Asia
June 1, 2021 - February 28, 2022
Mobile Engineer at Wowrack Indonesia
April 1, 2023 - Present
Hard-working software engineer with 4+ years of experience focusing on Flutter, Kotlin, and IoT integration (BLE, Stream). Proficient in Python and experienced with architectural frameworks such as GetX and Provider. Skilled in building scalable apps using Clean Architecture, with a proven track record delivering solutions in healthcare, e-commerce, and IoT sectors.
Freelance Mobile Developer at Prop Nex+ Indonesia
March 1, 2023 - December 1, 2023
Maintained and enhanced mobile apps by improving stability and delivering new production features. Applied Provider with MVVM architecture to ensure a maintainable and scalable codebase.
Mobile Developer at Maven Digital Asia
March 1, 2022 - March 1, 2023
Developed an Android health care app using Kotlin (MVVM) with API integration for the HCA Hospice project.
Mobile Developer at Collins
December 1, 2021 - January 31, 2022
Contributed to a restaurant booking app by implementing assigned features under PM direction.
Android App Developer at PinGo
August 1, 2021 - December 1, 2021
Built an Android app with Kotlin (MVVM) for photo editing, sharing, and recommending popular places.
Mobile Developer at GeekGarden Indonesia
January 1, 2022 - March 1, 2022
Developed an Android app for trading and cryptocurrency using Kotlin (MVVM) with API integration, ensuring a stable and responsive experience.
Mobile Developer - Internship at Maven Digital Asia
June 1, 2021 - February 1, 2022
Supported mobile development projects; gained exposure to Android development lifecycle and team collaboration.
Mobile Developer at Seraphim
August 1, 2022 - January 31, 2023
Created a health care and hospital management app, ensuring stability and functionality for internal members.
Mobile Developer at INDI Health / IDOK Telemedicine
January 1, 2022 - March 1, 2022
Maintained and improved an Android health care app with Jitsi-based teleconsultation, bug fixes and feature enhancements.
Freelance Mobile Developer at Propnex+ Indonesia
March 1, 2023 - December 1, 2023
Revamped the legacy codebase using MVVM architecture and Provider to address critical stability issues in the production app. Reduced application crash rate by 30% through rigorous bug fixing and performance optimization, significantly improving user retention and reliability for property agents.
Mobile Developer Maintainer at iHealth Indonesia
January 1, 2022 - March 31, 2022
Optimized the Android application core and integrated Jitsi Meet to support increasing telemedicine traffic, enhancing video call stability and the overall patient-doctor experience.
Mobile Developer Maintainer at GeekGarden Indonesia
January 1, 2022 - March 31, 2022
Built core trading features for the 'Vonix' cryptocurrency app using Kotlin (MVVM) and integrated REST APIs, ensuring a responsive environment for real-time market data visualization.
Internship Mobile Developer at Maven Digital Asia
June 1, 2021 - February 28, 2022
Vonix App: Internship project focusing on core trading features for a cryptocurrency app, using Kotlin (MVVM) and REST APIs to enable real-time market data visualization.
Mobile Developer at Propnex+ Indonesia
March 1, 2023 - December 1, 2023
Revamped the legacy codebase using MVVM architecture and Provider to address critical stability issues in the production app. Reduced application crash rate by 30% through rigorous bug fixing and performance optimization, significantly improving user retention and reliability for property agents.
Maintainer at iHealth Indonesia
January 1, 2022 - March 1, 2022
Optimized the Android application core and integrated Jitsi Meet to support increasing telemedicine traffic, enhancing video call stability and the overall patient-doctor experience.
Maintainer at GeekGarden Indonesia
January 1, 2022 - March 1, 2022
Built core trading features for the 'Vonix' cryptocurrency app using Kotlin (MVVM) and integrated REST APIs, ensuring a responsive environment for real-time market data visualization.

Education

Bachelor Degree in Electrical Engineering at Institut Teknologi Sepuluh Nopember (ITS)
September 1, 2015 - September 1, 2021
Bachelor of Electrical Engineering at Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia
January 11, 2030 - December 4, 2025
Bachelor of Electrical Engineering (Honours) at Institut Teknologi Sepuluh Nopember
August 1, 2015 - October 1, 2021
Bachelor of Electrical Engineering (Honours) at Institut Teknologi SepuluhNopember - Surabaya, Indonesia
August 1, 2015 - October 1, 2021

Qualifications

Honors
January 11, 2030 - September 18, 2025
Atlassian Agile Project Management Professional Certification
January 11, 2030 - December 4, 2025
Basic Mobile Developer Certification
January 11, 2030 - December 4, 2025
Flutter Essential Training: Build for Multiple Platforms
January 11, 2030 - January 5, 2026
Building for Multiple Platforms - LinkedIn Learning
January 11, 2030 - January 5, 2026
Agile Foundations - LinkedIn Learning
January 11, 2030 - January 5, 2026
Dart: Clean Code; Writing High-Efficiency and Maintainable Dart - LinkedIn Learning
January 11, 2030 - January 5, 2026
Flutter Maintenance - CourseNet
January 11, 2030 - January 5, 2026
Basic Mobile Developer - ProGate
January 11, 2030 - January 5, 2026
IBM iOS and Android Mobile App Developer Professional Certificate - IBM
January 11, 2030 - January 5, 2026
Atlassian Agile Project Management Professional Certificate - Atlassian
January 11, 2030 - January 5, 2026
Becoming an Effective Internal Trainer - Wowrack
January 11, 2030 - January 5, 2026
Project Management Professional (PMP) - Udemy
January 11, 2030 - January 5, 2026
IBM iOS and Android Mobile App Developer Professional Certificate
January 11, 2030 - January 5, 2026
Atlassian Agile Project Management Professional Certificate
January 11, 2030 - January 5, 2026
Becoming an Effective Internal Trainer
January 11, 2030 - January 5, 2026
Project Management Professional (PMP)
January 11, 2030 - January 5, 2026

Industry Experience

Healthcare, Software & Internet, Education, Professional Services, Retail, Media & Entertainment, Other, Computers & Electronics, Manufacturing
    uniE621 Seraphim
    Seraphim is a Flutter application built with Clean Architecture and Provider, designed for seamless healthcare management. It allows users to schedule doctor appointments, view medical history, and access doctor reviews. The app also includes a health analysis questionnaire to help users track their well-being. With its intuitive and user-friendly design, Seraphim delivers a comprehensive platform for managing healthcare needs.…
    paper Seraphim

    Seraphim is a Flutter application built with Clean Architecture and Provider, designed for seamless healthcare management. It allows users to schedule doctor appointments, view medical history, and access doctor reviews. The app also includes a health analysis questionnaire to help users track their well-being. With its intuitive and user-friendly design, Seraphim delivers a comprehensive platform for managing healthcare needs.

    uniE621 IoT Stadium
    IoT Stadium is a Flutter application built with Clean Architecture and Provider, enabling seamless management of IoT devices. It provides full CRUD functionality for devices and integrates with BLE (Bluetooth Low Energy) to connect with a BLE gateway, leveraging MQTT and LoRaWAN for communication. Designed with a focus on an intuitive and efficient user experience, IoT Stadium delivers a comprehensive solution for smart stadium management.…
    paper PropNex +

    PropNex+ is a Flutter application built with Clean Architecture and Provider, designed to simplify real estate processes. It enables users to sell, rent, and manage property listings with ease. Key features include property input, listing management, posting, sharing, and scheduling open houses. With its seamless and user-friendly interface, PropNex+ provides a complete platform for efficient property transactions.

    paper Vin Geek

    VinGeek is a Flutter application built with Clean Architecture and Provider, designed to streamline restaurant bookings and food delivery services in Singapore. It allows users to make reservations, order food and drinks for home delivery, and manage their dining experiences with ease. With its convenient and user-friendly interface, VinGeek provides a seamless platform for exploring and enjoying restaurant services.

    paper IoT Stadium

    IoT Stadium is a Flutter application built with Clean Architecture and Provider, enabling seamless management of IoT devices. It provides full CRUD functionality for devices and integrates with BLE (Bluetooth Low Energy) to connect with a BLE gateway, leveraging MQTT and LoRaWAN for communication. Designed with a focus on an intuitive and efficient user experience, IoT Stadium delivers a comprehensive solution for smart stadium management.