Backend Developer Needed for GPS OBD Tracking Gateway

@mascotindia123

Hello, I can develop your GPS OBD tracking gateway from scratch and implement the protocol according to the documentation you provide. The backend will handle TCP connections, device registration/authentication, JT/T 808 message decoding and encoding, heartbeat processing, GPS tracking, OBD data collection, alarm handling, command delivery, and database storage. The project will include complete source code, database schema, a working TCP gateway server, logging, error handling, installation documentation, and a clear system overview. I have experience building backend services, API integrations, and real-time data processing systems with a focus on reliability and scalability. Budget: Can be discussed further after reviewing the protocol documentation. Timeline: Approximately 2–4 weeks depending on protocol complexity and testing requirements. Warm Regards, Harpreet Singh

@a4logic

Hello, With extensive experience in Android, Mobile App Development, PHP, and Software Development, my team at Our Software is equipped and prepared for the task of creating your GPS OBD tracking gateway service. We have a deep understanding of TCP connections, message protocol parsing and decoding, device registration and authentication, and database storage. We've previously developed similar projects successfully, employing the same philosophy that we would apply to your project: providing a robust architecture that includes logs, error handling, and clear setup instructions. Our final delivery will include the complete source code with a comprehensive database schema. What sets us apart is our unwavering commitment to delivering exceptional positive outcomes for our clients while offering excellent customer service. We value open communication and are dedicated to impressing you with our work by turning your specific needs into a reality with the solution we create for you. Choose us for a seamless development process where we will customize Thanks!

@ykarora26

With extensive backend development experience, I understand the need for a GPS OBD tracking gateway service that communicates with devices using the provided protocol document. I have successfully implemented similar solutions integrating TCP connections, message decoding, device registration, and database management. Could you please clarify if any specific security measures are required for device authentication? Regards, Yogesh Kumar

@SBITServices

Hi, I will develop a backend system for your GPS OBD tracking gateway service. The system will accept TCP connections from devices, decode JT/T 808 protocol messages, handle registration/authentication, process data, send commands, and store information in a database. The deliverables will include complete source code, database schema, server, decoder/encoder, command feature, setup instructions, and system explanation. Let's discuss further. Regards, Sai Bhaskar

@ZohaibRoy

⭐⭐⭐⭐⭐ Build a Reliable GPS OBD Tracking Gateway Service for You ❇️ Hi My Friend, I hope you are doing well. I reviewed your project details and see you're looking for a backend developer to create a GPS OBD tracking gateway service. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects in backend development. I will ensure the service communicates effectively with GPS OBD devices, following the protocol document you provide. ➡️ Why Me? I can easily build your GPS OBD tracking gateway as I have 5 years of experience in backend development, specializing in TCP connections, data handling, and device communication. My expertise includes managing device registration, authentication, and processing location data. Additionally, I have a strong grip on database management and error handling, ensuring a robust solution for your project. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ Backend Development ✅ TCP Connection Handling ✅ GPS OBD Protocol Implementation ✅ Device Registration ✅ Data Storage Solutions ✅ Error Handling ✅ Database Design ✅ Command Sending Features ✅ API Development ✅ System Logging ✅ Installation Instructions ✅ Communication Protocols Waiting for your response! Best Regards, Zohaib

@Friends4it

I can build the GPS OBD tracking gateway service from scratch following your protocol document. My plan: 1. TCP server to accept connections from GPS OBD devices with concurrent connection handling 2. JT/T 808 protocol decoder — parse device registration, authentication, heartbeat, GPS location, OBD vehicle data, alarms, and fault codes 3. Bidirectional communication — send commands from server to devices 4. Database layer — store all device data, GPS coordinates, OBD readings, alarms in PostgreSQL/MySQL 5. Logging, error handling, and graceful reconnection logic 6. Setup instructions and deployment documentation Deliverables: complete source code, database schema, API documentation, and setup guide. Tech stack: Node.js or Python for the TCP server, with clean modular architecture for easy maintenance. I've built similar IoT gateway services handling device protocols and real-time data ingestion. Happy to review your protocol document and provide a detailed technical breakdown. Let's discuss the expected device count and data volume to plan the architecture.

@Herculesz

Hi I can build the new GPS OBD tracking gateway backend from scratch based on your GPS OBD scanner protocol document. I have experience with TCP socket servers, binary protocol decoding/encoding, JT/T 808-style message handling, GPS tracking systems, OBD data processing, databases, logging, and backend API architecture. The main technical challenge is correctly parsing device packets, authentication flows, GPS/OBD payloads, alarms, and server commands, so I would implement a protocol-driven decoder/encoder with validation and detailed logs. The backend can accept device TCP connections, handle registration, authentication, heartbeat packets, GPS positions, vehicle telemetry, fault codes, and alarm events. I would design a clear database schema for devices, sessions, locations, OBD readings, alarms, command history, and raw message storage for debugging. I can also build a command-sending layer so the server can encode and send supported instructions back to connected devices. All communication can remain inside Freelancer, and the final delivery will include source code, schema, gateway server, setup instructions, and a simple system explanation. Thanks, Hercules

@nicrosoft

Your GPS OBD tracking gateway project is exactly the kind of backend and protocol-integration challenge I enjoy working on. I can build a robust TCP gateway service that communicates directly with GPS OBD devices, processes JT/T 808 messages, stores tracking and vehicle data, and provides a solid foundation for future fleet management and telematics features. I am a Full Stack Developer with more than 9 years of experience building backend systems, APIs, real-time communication services, IoT integrations, fleet management platforms, and enterprise applications. Recently, I developed a comprehensive Fleet Management ERP solution that includes vehicle tracking, driver management, telematics-related workflows, notifications, reporting, and backend integrations. Deliverables: * TCP gateway server for GPS OBD devices * JT/T 808 protocol decoder and encoder * Device registration and authentication handling * Heartbeat processing * GPS location data processing and storage * OBD vehicle data processing and storage * Alarm and fault code handling * Command sending from server to devices * Database schema and data storage layer * Logging, monitoring, and error handling * Installation and deployment documentation * Source code and architecture overview A few questions: * Which backend technology do you prefer (.NET, Java, PHP, Node.js, or Python)? * Do you already have a preferred database platform? Regards, Malik

@purplemaestro

Hi. I am an experienced backend developer ready to build your GPS OBD tracking gateway using your preferred language and database stack. I specialize in real-time telemetry ingestion and can clarify protocol support and admin panel requirements before starting. Please confirm if you have sample packet logs or a test device available for immediate integration and testing. My approach ensures a scalable architecture that supports multiple device models from day one. I look forward to discussing your specific needs and submitting a detailed technical proposal.

@GeeksEra

Hi, A JT/T 808 gateway lives or dies on the frame layer — the 0x7e delimiters and byte-escaping trip up most parsers before any GPS data gets decoded. Once that's solid and you track a session per device, sending commands from the server to the device is straightforward. I'd set it up as: - Node.js raw TCP server (net module) to accept TCP connections from GPS OBD devices - A 808 codec for device registration, authentication, heartbeat messages, location + OBD telemetry, and alarm/fault frames - PostgreSQL for the GPS and OBD vehicle data, with a schema you can query later - Redis for live device sessions so downlink commands reach the right socket I work mostly in Node.js backends with long-lived socket connections, so the persistent TCP + per-device state model is familiar ground. Before I quote: does your protocol doc use standard JT/T 808 (2013/2019) message IDs, or a vendor-extended variant? That changes the codec work. Asif

@durgesh8527

Drawing upon my extensive 10+ years as a multifaceted full-stack developer, I am confident in my ability to deliver a high-functioning and efficient backend for your GPS OBD tracking gateway. Throughout my career, I have gained substantial expertise and hands-on experience in not only database management but also in using languages such as Python, PHP, Node.js and many more, which all perfectly align with the demands of this project. Moreover, given that you require the ability to decode GPS OBD and JT/T 808 protocol messages promptly, I can assure you that my communication proficiency alongside my expertise in employing APIs and integrations like GraphQL and REST, will guarantee an effective exchange of data between the devices and the system server. My familiarity with various databases including MongoDB, PostgreSQL, MySQL indubitably lends itself well to storing and organizing large amounts of data such as GPS location data, OBD vehicle data or any alarms and fault codes data that might be produced during operation.

@rbtech1984

Hi There!!! ★★★★ ( ) ★★★★ Backend system development for a real-time GPS OBD tracking gateway using TCP communication and JT/T 808 protocol handling. **Project understanding:** I understand you need a backend developer to build a complete GPS OBD tracking gateway from scratch. The system must handle TCP device connections, decode JT/T 808 protocol messages, manage authentication, store GPS + vehicle OBD data, process alerts, and support server-to-device commands with full logging and database integration. **Services:** ⚜ TCP server setup for real-time GPS OBD device communication ⚜ JT/T 808 protocol decoding & encoding for device message handling ⚜ Device registration, authentication and heartbeat management system ⚜ GPS location tracking + OBD data storage with structured database design ⚜ Command control system for sending instructions to devices remotely ⚜ Alarm, fault code processing and event logging system ⚜ Clean backend architecture with documentation + setup guide I have experience building backend systems with real-time data processing, API design, and database-driven applications. I focus on stability, clean architecture, and scalable communication systems. I can carefully follow your protocol document and ensure accurate implementation of device communication logic from start to production-ready system. Warm Regards, Farhin B.

@rosscarter1011

Hi there, Building a reliable GPS OBD tracking gateway service involves complexities like ensuring seamless device communication, robust data handling, and secure device management. Without a well-architected backend, you risk data integrity issues and communication failures. With my expertise in backend development and experience with GPS protocols, I can construct a solution that is efficient, scalable, and secure, ensuring smooth device interaction and data flow. Here are my questions: Could you specify which database technology you prefer for storing the data? Also, do you have a preferred hosting environment for the server setup? Let’s discuss your project now!

@KarthikTechCon

Hello, I'm Karthik, a Solution Architect and Backend Developer with 15+ years of experience building IoT, GPS tracking, telematics, and real-time communication platforms. I can develop your GPS OBD tracking gateway from scratch based on the protocol specification you provide. I have experience with TCP socket servers, binary protocol parsing, device communication, and scalable backend architectures. ✔ TCP server for GPS OBD device connections ✔ JT/T 808 and custom protocol decoding/encoding ✔ Device registration & authentication ✔ Heartbeat processing and connection management ✔ GPS location and OBD data storage ✔ Alarm and fault code handling ✔ Server-to-device command execution ✔ Database design and schema delivery ✔ Logging, monitoring, and error handling ✔ Complete source code and deployment documentation I will deliver a clean, maintainable solution with clear setup instructions and architecture documentation, ensuring reliable communication between devices and the backend. Best regards, Karthik 15+ Years Experience

@Hrolgar

JT/T 808 frames every message with 0x7e delimiters and byte escaping, so a correct codec and a per-device session state machine sit at the center of this build, well ahead of the database side. I'd validate my decoder against your protocol doc before building outward, since vendor variants differ on alarm and OBD field layouts. From there: a TCP server that accepts device connections, handles registration and auth, tracks heartbeat, decodes location and OBD vehicle data, processes alarms and fault codes, and keeps a command channel so the server can push messages back to a device by session. DB persistence, logs, and error handling throughout. Straight talk on budget: a production gateway with proper framing, escaping, error handling, and persistence is roughly a week of protocol-level backend work. The posted $250 covers a toy socket, not a robust binary server, so my bid is $450 for the real thing. What you'd get: M1: TCP server + JT808 codec + framing/escaping, $150, 3d M2: registration + auth + heartbeat + session state, $120, 2d M3: location + OBD + alarm/fault ingest to DB schema, $120, 2d M4: server-to-device commands + logs + install docs, $60, 1d Total $450, about 8 days. Source, DB schema, decoder/encoder, command feature, and setup docs all included, and I'll keep every message on Freelancer per your rule. Do you want the server in Node or Python?

@abhishek060

Hi, I’ve reviewed your requirements and I can help you build a complete backend GPS OBD tracking gateway service from scratch. I understand this is a protocol-driven system where the core challenge is not just backend development, but correctly handling real-time TCP communication, decoding JT/T 808 GPS OBD messages, and ensuring reliable data processing for location, vehicle diagnostics, alarms, and device commands without data loss. I can build a stable and scalable backend that handles the full device lifecycle and real-time communication flow. What I will deliver: ✔ TCP server to handle device connections ✔ GPS OBD / JT/T 808 protocol message decoder & encoder ✔ Device registration, authentication, and heartbeat handling ✔ Real-time GPS + OBD data processing and storage ✔ Alarm and fault code processing system ✔ Command sending system from server to devices ✔ Structured database schema for tracking all data ✔ Logging, error handling, and clean architecture setup Everything will be built in a maintainable structure so the system can scale as device count grows. Before starting, one clarification: • Do you already have the full GPS OBD / JT/T 808 protocol document ready to share for implementation details? I can start immediately after reviewing the protocol file and ensure the system is built correctly according to specifications. Let’s connect inside the Freelancer chat to proceed further.

@billybryan98

Hello Client, I hope you’re well. I’m an experienced backend developer skilled in building robust gateway services and working with custom protocols. My focus is on reliable TCP servers, secure device authentication, and scalable data storage. I’ll read your GPS OBD scanner protocol and translate it into a clean, maintainable gateway that supports registration, authentication, heartbeat handling, location and OBD data capture, alarms/ faults processing, and server-initiated commands. In my recent work, I’ve designed and deployed a TCP gateway that decodes device messages, stores telemetry in a relational database, and provides a clear command interface to devices. The solution included thorough logging, error handling, and a simple deployment guide. I’ll apply the same discipline here, building a self-contained gateway with a decoupled decoder/encoder, a robust DB schema, and a straightforward setup guide. I can handle this end-to-end based on my expertise and past work. The architecture will be modular, scalable, and easy to extend as protocols evolve, and I guarantee a clean, correct delivery. Please feel free to contact me so we can discuss more details. I am looking forward to the chance of working together. Best regards, Billy Bryan

@NEHABHAT92

With my extensive experience of 9+ years developing web and mobile applications, I believe I am the perfect candidate for your backend development role. My skillset includes Android, Mobile App Development, PHP which aligns well with your requirements for building a new GPS OBD tracking gateway service. Not only do I have the technical proficiency to handle this project efficiently, but I am also dedicated to providing high-quality work that meets your needs. Throughout my career, I have had successful experiences handling numerous data-intensive projects similar to yours such as building E-commerce and CMS websites. This gives me an edge in understanding and implementing protocols such as JT/T 808. I assure you that my proficiency in Java and PHP is directly relevant to decoding/encoding protocol messages, managing and storing large data volumes efficiently in databases which are essential for this project. Moreover, my solutions are always cross-browser compatible and have persistent support post-delivery. On top of all this, I provide cost-effective solutions and manage domains/hosting services appropriately. It would be my immense pleasure and privilege to bring my expertise to develop your GPS OBD tracking gateway service. Looking forward to discussing the project further with you.

@mutahrar

I need a backend developer to build a new GPS OBD tracking gateway service. The service must communicate with GPS OBD devices using the protocol document I will provide. The developer must read and follow the attached GPS OBD scanner protocol file to build the system correctly. This is a new project. There is no existing codebase to fix. What I Need Built The backend should: Accept TCP connections from GPS OBD devices Decode GPS OBD / JT/T 808 protocol messages Handle device registration Handle device authentication Process heartbeat messages Receive and save GPS location data Receive and save OBD vehicle data Process alarms and fault code data Send commands from the server to the device Store all important data in a database Include logs, error handling, and setup instructions Deliverables The final delivery should include: Complete source code Database schema Working TCP gateway server Device message decoder/encoder Command sending feature Installation instructions Simple explanation of how the system works All communication must stay inside Freelancer.