Hire the Best Embedded Systems Engineers
in Indonesia

Hi, I am an Electronic Engineer with solid experience in designing, developing, and troubleshooting electronic systems. I specialize in embedded systems, PCB design, IoT, and automation. I help clients turn ideas into real, working, and reliable products, from concept and schematic to prototype and testing. I combine engineering precision with practical problem solving, so every solution is efficient, optimized, and ready for real-world use. Core Expertise: Electronic and Hardware Engineering: 1. Circuit design (analog and digital) 2. Schematic capture and PCB layout (KiCad, Altium, EasyEDA, Eagle) 3. Power electronics and DC–DC converters 4. Sensor integration and signal conditioning Embedded Systems: 1. Microcontrollers: ESP32, Arduino, STM32, PIC, AVR 2. Firmware development using C, C++, and Embedded C 3. Real-time and low-power embedded applications 4. Debugging, testing, and optimization of firmware IoT and Automation: 1. Wireless communication: WiFi, Bluetooth Low Energy (BLE), LoRa, Zigbee 2. IoT device prototyping and integration with cloud platforms 3. Home and industrial automation solutions 4. Remote monitoring and data acquisition systems Prototyping and Testing: 1. Breadboard and PCB-based prototyping 2. Hardware validation and troubleshooting 3. Performance, reliability, and cost optimization 4. Clear documentation for assembly and future development Why work with me: 1. Clear and responsive communication 2. Professional and detail-oriented engineering work 3. On-time delivery and reliable support 4. Flexible: from small fixes to full product development 5. Focused on long-term cooperation and client satisfaction Let’s work together: If you need help with PCB design, embedded firmware, IoT devices, or a complete electronic system, I am ready to support your project. Feel free to send me a message with your idea or problem, and I will be happy to discuss the best technical solution for you.

I'm an electrical, electronic, and software engineer from Indonesia. I'm graduated my bachelor degree at Sepuluh Nopember Institut of Technology majoring Electrical Engineering. I have some experiences in engineering projects, software development, and research program. I focused on Electronics Engineering area, such as embedded system, electronic circuit and PCB design, IoT, machine learning, and computer vision. I'm also have qualification on website development, databases, automation & control system, SCADA, power electronics, etc. I'm currently working in IT company and open to the side project or freelance opportunity. You can see my portfolio in my personal website and github account.

Hi, I’m Lutfi — an embedded systems engineer with 3+ years of experience developing smart devices. I specialize in firmware development using ESP32 (preferably with ESP-IDF), STM32, and TI C2000, with a strong focus on C/C++ programming, sensor integration, Modbus communication, and IoT performance optimization. I help turn complex hardware problems into reliable, scalable solutions — whether it’s custom firmware, OTA updates, or embedded web interfaces. Let’s bring your electronics project to life.

I’m a senior full-stack engineer specializing in building and scaling SaaS systems. I work mainly on backend APIs, dashboards, integrations, and performance in real production environments. I have 8+ years of experience working with SaaS products used by real customers, including companies like Ziggeo, Kargo, and Daily Mentor. My role is typically to take ownership of existing systems, improve reliability and performance, and extend features without breaking live users. Typical Problems I Help Solve: - Slow dashboards or APIs in production - Messy or unreliable third-party integrations - Legacy systems that need safe refactoring - Scaling issues as data or user volume grows - Technical debt blocking new features If your system works but feels fragile, slow, or hard to extend, that’s usually where I’m most useful. Alongside client work, I also build AI-powered SaaS projects in my portfolio. These projects help me explore how AI and automation can be used in real web apps, with focus on correctness and system stability. ✦ Selected Professional Work (Production Systems) Daily Mentor - Designed and implemented a data aggregation system that fixed production performance issues caused by growing dataset size. - Reduced request complexity and improved performance without breaking existing customer workflows - Worked on backend APIs and dashboard logic in a live SaaS environment with real users SaaS Development and Integrations - Designed and shipped backend APIs for SaaS platforms in production - Built and maintained integrations with QuickBooks, Shopify, and Facebook Ads - Focused on data consistency, reliability, and safe changes in live systems ✦ Portfolio Projects (AI and Automation) * These projects demonstrate how I design real-world AI features and system architectures. AI-Powered CBT SaaS - Built a CBT web application with a GPT-based conversational feature - Implemented encrypted data storage and structured conversation flows - Focused on privacy, predictable behavior, and system correctness Upwork Cover Letter Generator - Built an AI-assisted cover letter generator using a RAG-based approach - Designed prompt structure and retrieval logic for consistent output - Used as a real product sample, not a client production system ✦ How I Work 1. Understand the business problem, not just the technical task 2. Propose simple, maintainable solutions 3. Implement in small, safe steps 4. Test against real usage scenarios 5. Deliver with clear documentation and handover I optimize for systems that are easy to maintain long-term, not clever one-off solutions. ✦ What I Focus On Production client work - Backend development with Node.js and TypeScript - API design and third-party integrations - Dashboard performance and data handling - Improving live systems without breaking existing users Portfolio and greenfield projects - AI features using OpenAI APIs - Early-stage automation and workflow design - Practical use of AI in SaaS products ✦ Core Stack Backend - TypeScript / Node.js (Express, Fastify) - PHP for legacy and SaaS systems - Python (Django, FastAPI) for tools and AI experiments Frontend - React / Next.js - TailwindCSS, MUI Data and Infrastructure - Relational and document databases for analytics, dashboards, and high-read systems. (PostgreSQL, MySQL, MongoDB) - AWS-based architectures for scalable APIs and background processing. - Docker, CI/CD, Linux ✦ What I’m a Good Fit For - SaaS founders with existing systems that need improvements - Teams that need reliable backend and integrations - Projects where correctness and stability matter ✦ What I’m Not a Good Fit For - One-day throwaway scripts - Vague idea-stage projects with no technical direction - Unrealistic deadlines or unclear requirements ✦ Availability and Working Style - Part-time or project-based work - Existing production systems or greenfield SaaS projects - Comfortable working with remote and async teams I communicate clearly in English and Indonesian and prefer practical solutions with clear trade-offs. 👋 If you need a senior engineer to improve or stabilize your SaaS system, message me with a short description of your problem and I’ll tell you honestly if I’m a good fit.

It has been around 15 YEARS for me working on mobile robots, e-VTOL UAV (drones), RF-based sensing (i.e., UWB and FMCW RADAR), IoT, and embedded systems in general. ☑In Upwork, I have helped prototype various projects on IoT and embedded systems, like: ✅ IoT Dairy Farm, ✅ IoT Breast Pump, ✅ Automatic hydroponics, ✅ Vending Machine, ✅ Mobile Robots, ✅ Biosensor ✅ Smart IoT box ✅ Smart Display (LED, LCD, addressable RGB strip) ✅ Micro/active/passive buzzers ☑I'm familiar with various hardware including: ✅ Various Arduino boards, ✅ SBCs (Raspberry Pi, Banana Pi, Latte Panda, Odroid, Onion, etc), ✅ Edge devices (Jetson Orin, Rockchip) ✅ STM32, ✅ AVR (ATMEGA, ATXMEGA), ✅ ARM Cortex, ✅ ESP32/ESP8266, ✅ Nordic nRF52 (e.g. nRF52840), CC2650 ✅ SDR/USRP, ✅ TI mmWave Radar (e.g. AWR2243, IWR6843AOP). ☑I'm fluent with various IDEs such as: ✅ ArduinoIDE, ✅PlatformIO/VSCode, ✅STM32CubeIDE, ✅Keil IDE, and programming languages like ✅C/C++, ✅Python, and ✅Matlab. ☑ My main expertise is: ✅ PCB design (high-speed, Flexible, Rigid-Flex, multi-layer) ✅ firmware programming. ☑ I'm also familiar with AWS cloud services: ✅IoT core AWS ✅S3 ✅Lambda ✅MQTT/HTTP API ✅REST API Gateway ☑ Lastly, I have done various AI/machine learning projects where I'm familiar with: ✅Keras ✅TensorFlow ✅PyTorch.

I build production-ready software embedded with autonomous AI agents and intelligent RAG pipelines. With 5+ years of full-stack experience delivering secure systems for banking and government clients, I focus on designing the right AI architecture and operational workflows to make your product actually work for your business. 🧪 Technical Stack AI Models & Frameworks: - Claude, Codex, GLM, Kimi, LangGraph, LangChain, CrewAI, LlamaIndex, Hermes Framework, OpenClaw Agentic Workflows & LLMOps: - Model Context Protocol (MCP), LangSmith (Agent Tracing), Automated Tool-Calling, Function Execution Loops, Prompt Engineering Document Intelligence & OCR: - Google Document AI, Tesseract OCR, Crawl4AI, Unstructured Data Parsing, Semantic Text Chunking & Cohere Re-ranking Vector & Relational Data: - Chroma DB, pgvector (PostgreSQL), Pinecone, Qdrant, Redis, Prisma ORM Core Backend: - Python (FastAPI, Django), Node.js (Express, NestJS), PHP (Laravel), ASP.NET, REST & GraphQL APIs Core Frontend: - Next.js 15+, React, TypeScript, Bun, TailwindCSS, Streamlit, Shadcn UI Infrastructure & DevOps: - Docker, AWS (EC2/Lambda), Supabase, Git Workflows, Automated CI/CD Pipelines ------ 🛠️ AI & Fullstack Projects - Kontrakku (AI Legal-Tech): End-to-end RAG contract analyzer built with Next.js 15, Django, and Chroma DB. Uses semantic chunking to accurately flag high-risk legal clauses with zero hallucinations. - GrowOS (Autonomous Agent Engine): Built for the OpenClaw Agenthon using the Hermes Framework and Claude Sonnet. Runs background cron tasks that dynamically self-correct and override execution schedules based on persistent state logs. --- 🏆 Projects Success Stories - FinTech & Banking: Architected a Next.js/Node.js procurement infrastructure handling 1B+ IDR in contracts; baseline adopted by 10+ engineers. - Corporate Supply Chain (Public Tbk Company): Engineered an end-to-end core data pipeline tracking operations across an oil & gas supply chain. - GovTech & IoT Integration: Built a real-time operational dashboard for the National Police, connecting physical IoT devices to a secure backend. --- ⚙️ What I Do For Your Business - Agentic AI Workflows: Autonomous multi-agent background architectures, local state machines, and Model Context Protocol (MCP) integrations. - Document Intelligence: Structuring messy data from PDFs, images, and sites using Crawl4AI and custom OCR ingestion pipelines. - Fullstack Scaling: Developing high-performance Next.js/Python applications wrapped in secure Docker containers with automated CI/CD pipelines. --- If you need an engineer who focuses on building the right architecture to make your AI product work for your business, let's talk. Click "Message" or "Invite to Job" to schedule a 15-minute technical discovery call.