Ricky Rinaldy

Flutter Developer | Mobile Engineer (3+ YOE) | Enterprise Apps & Business Automation

Palembang, South Sumatra • West Jakarta, DKI Jakarta

ricky.rinaldy77@gmail.com

+62 822 8188 4743

I build mobile applications that help businesses work smarter. As a Mobile Engineer with 3+ years of experience, I've developed enterprise solutions including ERP, Sales Order, Asset Management, Attendance, IoT, and AI-powered applications. I also have experience in Android development using Kotlin and Jetpack Compose.
I enjoy solving real business problems by building high-performance, user-friendly applications, optimizing existing systems, and integrating backend services.
My primary expertise is Flutter, with additional experience in Android development using Kotlin and Jetpack Compose. My tech stack includes Flutter, Dart, Kotlin, Jetpack Compose, REST APIs, Firebase, Google Maps Platform, Bluetooth Low Energy (BLE), Google ML Kit, TensorFlow Lite, SQL, and Git. I'm also expanding my backend expertise with Spring Boot and Full-Stack JavaScript to build end-to-end solutions.
I'm always open to connecting, collaborating, and exploring new opportunities (Remote, Hybrid, or Onsite).

Work Experience

Freelance Flutter Developer

Self-Employed

Jakarta Raya, Indonesia

ActiveMay 2025 – Present

Flutter Developer specializing in building scalable, high-performance mobile applications for business operations. Experienced in developing enterprise applications, integrating backend services, implementing AI-powered mobile features, and connecting mobile applications with IoT devices.

Sales Order Application

Built and optimized sales order workflows for business operations.
Implemented lazy loading and pagination for large datasets.
Improved data synchronization and validation.

Mobile ERP Application

Refactored legacy Flutter code to improve performance and maintainability.
Fixed critical bugs and integrated REST APIs for business modules.

Enterprise Asset Management

Developed an asset management application with search, tracking, and realtime data integration.
Built responsive UI for enterprise users.

Attendance Management

Developed attendance features for a government-sector mobile application.
Integrated backend services and optimized daily operational workflows.

IoT Device Integration

Integrated mobile applications with IoT devices for real-time monitoring.
Implemented device communication and live data synchronization.

Printer Integration & Automation

Developed multi-printer support over Wi-Fi and LAN.
Automated document printing integrated with backend services.

AI-powered Features

Implemented face recognition using Google ML Kit and TensorFlow Lite.
Developed OCR for extracting data from images.

Mobile Application Developer (Freelance)

PT. Evo Manufacturing Indonesia

Palembang, South Sumatra, Indonesia

May 2025 – Present1 yr 3 mos

Key Achievements

Developed ERP mobile applications used for internal operations.
Improved application performance and maintainability through code refactoring.
Enhanced real-time communication using Firebase (Authentication, Firestore, FCM).
Increased system reliability by fixing bugs and optimizing data handling.

Responsibilities

Built Flutter-based mobile applications with focus on performance and scalability.
Integrated REST APIs for real-time data processing.
Implemented push notifications using Firebase Cloud Messaging (FCM).

Software Developer

PT. Evo Manufacturing Indonesia

Palembang, South Sumatra, Indonesia

Feb 2023 – Apr 20252 yrs 3 mos

Flutter · Mobile

Developing internal ERP mobile applications (frontend).
Integrating Firebase services (Auth, Realtime DB, Cloud Storage, FCM).
Optimizing UI/UX, Call & WhatsApp features, and consuming RESTful APIs.

Desktop Development (.NET)

Built internal business applications with CRUD operations and reporting features.
Optimized SQL queries for faster data retrieval.

Reporting & Data Processing

Developed Crystal Reports for operational and analytical reporting.
Supported business decision-making through structured data analysis.

Flutter Developer

Internship

Palembang, South Sumatra

Dec 2022 – Feb 20233 mos

Responsibilities

Assisted in developing Stock Opname application using Flutter.
Added obscure feature, switch button, and pages that consume APIs.

Website Builder · IT Support

Skylar Digital Creative

Palembang · Full-time

Oct 2019 – May 20211 yr 8 mos

Responsibilities

Managed affiliate internet marketing business (Amazon).
Content creator, keyword research (KeywordTool), and data entry.
Edited HTML & XML files, IT Support, team leader.
Assisted owner with office matters and employee payroll.

Tools

Ubuntu, VNC Viewer, Vultr
WPS Office, Notepad++

Backup Engineer · IT Support

PT Trakindo Utama · Freelance

Palembang, South Sumatra

2019

Responsibilities

Ensuring IT network runs smoothly.
Communication with clients via email.

Tools

Hiren Boot
Microsoft Outlook

Education & Certifications

Diploma of Informatics Engineering

Sekayu Polytechnic

2015 – 2018

Certifications

IT Essentials
Fullstack Javascript Bootcamp
Spring Boot Backend Engineering Bootcamp

Main Skills

Programming Languages

DartJavaScriptKotlinJavaVisual Basic

Frameworks

FlutterReact.jsJetpack ComposeSpring BootNode.jsVB.Net

Databases

SQL ServerMySQLPostgreSQLFirebase

Tools

GitVS CodeAndroid StudioBluetooth Low Energy (BLE)Google Maps PlatformREST APIsPostman

AI & Machine Learning

Google ML KitTensorFlow LiteFace RecognitionComputer Vision

Methodology

Full-Stack DevelopmentAgile ScrumCI/CD

Languages

🇮🇩

Indonesian

Native5 / 5

🇬🇧

English

Intermediate3 / 5

Projects

Project Highlights — Internal

ERP System — PT. Evo Manufacturing Indonesia

FlutterFirebaseRESTful APIVB.NETSQL ServerMobile Android

Full-featured internal ERP system for PT. Evo Manufacturing Indonesia. Built from scratch, covering 32+ active modules from procurement, sales, inventory, quality control, to production monitoring. Actively used by the entire internal company team.

Splash Screen

🛒CRM & Inquiry4 modul

Customer RegistrationNew Product InquirySample Product InquiryInquiry Display

📋Sales & Orders3 modul

Sales Order ManagementSales Order DisplayPO Tracking

📦Inventory Control4 modul

Master & BindingStock CheckingItem Reservation (Keep)Asset Binding

🚚Inbound & Receipt4 modul

Main Goods ReceiptOther Goods ReceiptInbound LoadingMaterial Loading

⚙️Production Ops4 modul

Production SchedulingCost Production NotesWaste ProductionPacking Validation

📡Lane & Machine5 modul

Temp MonitoringLane GrammageLane MoistureLane ValidationMachine Issue Reporting

🔍Quality Control3 modul

QC Assessment Level 1QC Assessment Level 2Quality Inspection

🛡️Military Sampling4 modul

MS GR1 & GR2MS SortingMS ValidationBerita Acara Validation

🔐Security & Support5 modul

Visitor/Vendor Reg.Gate Checkout ListPR Dept ApprovalsOCR/HMI ScannerDosing

Sales Order System — PT. Evo Manufacturing Indonesia

FlutterFirebaseRESTful APIMobile Android

Development and enhancement of mobile-based Sales Order system for company internal needs. Covers order management workflow, multi-role access (Sales & SPV), custom map tracking, and automatic document printing integration.