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Both of my access-control platforms—System A (Suprema's Biostar X) and System B (dormakaba's Matrix Professional)—sit on the same Windows server and share a local MS SQL instance. Each exposes a REST API, yet today they operate in silos. I need a seamless, bi-directional integration so that any change to a person or employee record in one system is reflected in the other almost instantly. Scope of the sync • Core identity fields: name and unique ID • Credential data: RFID card number and state • Biometric assets: fingerprint templates • Media: profile picture • Security attributes: access-level permissions Key requirements 1. Real-time operation (sub-second latency acceptable). 2. Conflict-resolution logic—latest change wins unless marked “locked.” 3. Robust logging of every API call and DB write for audit trails. 4. Graceful retry mechanism on network or API errors. 5. Delivered as well-documented integration service with unit tests and a simple configuration file (DB strings, API tokens, polling interval set to zero for push mode). Acceptance criteria • Create, update, or delete a record in System A; the same action appears in System B and vice-versa without manual refresh. • Mismatch simulation (e.g., tampered RFID) triggers a log entry and e-mail alert. • Full source code, setup script, and deployment instructions supplied. If you have hands-on experience integrating REST-based access-control or HRMS platforms and can demonstrate a previous live sync, I’d like to hear how you would approach this and your estimated timeline.
Project ID: 40366723
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30 freelancers are bidding on average ₹25,085 INR for this job

Interesting project, I will build the bi-directional sync service — mapping identity fields, RFID credentials, fingerprint templates, and access levels between Biostar X and Matrix Professional via their REST APIs. For conflict resolution, I will implement vector timestamps alongside the "latest wins" rule so that rapid near-simultaneous edits do not silently overwrite locked records — a common pitfall with simple polling comparisons. Questions: 1) Do both APIs support webhooks or change-notification callbacks, or will I need DB-level triggers on the shared SQL instance for push-mode events? 2) Are fingerprint templates stored in a compatible format between the two systems, or will conversion be needed? Looking forward to potentially working together. Thanks, Kamran
₹25,599 INR in 10 days
7.3
7.3

Using our expertise in Python and enterprise-level system integration, my team at Shadab Technologies is uniquely qualified to tackle your Real-Time Person Data Sync project with both Suprema's Biostar X and dormakaba's Matrix Professional. With a foundation laid in both AI and IoT hardware development, we've got experience building complicated systems that holistically combine seemingly disparate technologies - like the ones needed for this project. I want to highlight the robustness of our work; not only can we provide you with seamless bidirectional synchronization between your access control systems, but we can also build smart conflict-resolution logic to ensure the latest changes are always prioritized. Our integration services come complete with unit tests for thorough validation and a minimalistic configuration file that allows easy customization. What sets us truly apart is our ability to create intelligent systems that don't just automate tasks but generate meaningful insights from data. In your case, we'll leverage deep API integrations and AI models to accurately log every change for audit trails, simulate mismatches (such as tampered RFIDs), and send prompt e-mail alerts for swift remedy. Given my experience, I can assure you we would complete this project within the agreed timeline while delivering top-notch code alongside setup scripts and detailed deployment instructions. Let us bring our diverse skillset together to streamline your access control systems.
₹25,000 INR in 7 days
6.5
6.5

Hi there, I will build a real-time, bi-directional synchronizer between Suprema Biostar X and dormakaba Matrix Professional running on your Windows server; my experience with Windows services, MS SQL, REST APIs and access-control syncs makes me a reliable fit for a production-ready, auditable integration. - Implement a .NET service (C#) that listens to both APIs (push/webhook or polling) and mirrors create/update/delete for identity, credentials, fingerprints, photos and access levels. - Conflict-resolution engine: timestamp-based "latest wins" with support for a "locked" flag; include unit-tested logic and rollback hooks. - Reliable delivery: logging of every API call and DB write, retry/backoff queue for transient failures, and email alert on mismatch/tamper. - Deliverables: full source, unit tests, setup script, deployment notes, and a small config file for DB strings, API tokens, and push/poll mode. Skills: ✅ REST API ✅ C# Programming ✅ Conflict Resolution ✅ MS SQL / Database Management ✅ Logging, retry/backoff, audit trails Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’m available to start immediately; do you have webhooks enabled on either Biostar X or Matrix Professional, or should I implement efficient polling as a fallback? Do you have webhooks enabled on either Biostar X or Matrix Professional, or should I implement efficient polling as a fallback?
₹35,000 INR in 5 days
5.2
5.2

Hi there, I have read your project requirement. You need a real-time, bi-directional integration between Suprema Biostar X and dormakaba Matrix Professional, syncing identity, credentials, biometrics, media, and access permissions with logging, conflict resolution, and reliability. We will build a robust integration service (Node.js/.NET) that listens to both systems via REST/webhooks (or optimized polling if needed), processes changes in real time, and syncs data bi-directionally with conflict handling (latest wins + lock override). The solution will include retry mechanisms, detailed audit logging, email alerts for mismatches, and a configurable setup for DB/API credentials. The architecture will be scalable, fault-tolerant, and delivered with unit tests, documentation, and deployment scripts. Questions: ========= Do both systems support webhooks/events, or should we rely on polling APIs? Are biometric templates compatible in format between both systems? What email/alert system do you prefer for notifications (SMTP, service)? Any preferred tech stack (.NET vs Node.js) for deployment on your server? Best Regards, Srashtasoft Team
₹35,000 INR in 12 days
4.6
4.6

I have hands-on experience building RFID-based systems for event management, including real-time identity handling and device integrations, so I’m very comfortable working with credential data, biometrics, and access control workflows. I can build a reliable bi-directional sync service that connects both systems via their REST APIs, ensuring near real-time updates with proper conflict resolution, detailed logging, and automatic retry handling. The solution will be cleanly structured, configurable, and cover identity data, RFID credentials, biometrics, media, and access permissions, along with audit trails and alerting for mismatches. I will also provide unit tests, full documentation, and a simple configuration setup so you can deploy and maintain it easily, and I can begin as soon as I review both APIs.
₹20,000 INR in 3 days
4.4
4.4

I noticed you're tackling the intricate challenge of integrating two silos into a real-time access control system. Achieving sub-second latency while ensuring robust conflict resolution is no small feat. Having successfully delivered a similar **bi-directional sync** project for a security firm, I engineered an API integration that allowed seamless data flow between disparate systems, reducing manual error rates by **30%** overall. My expertise in creating robust logging mechanisms and implementing **fault-tolerant** retry methods makes me well-suited to your requirements. **Here's how I can directly match your needs:** - **Orchestrate** real-time synchronization across both systems with negligible latency. - **Reverse-engineer** conflict-resolution logic to ensure the latest updates are accurately reflected, even under high data loads. - **Ship** comprehensive logging and monitoring solutions to guarantee audit trails and compliance. I've seen how poorly managed integration projects lead to stalled timelines and user frustration. That's why I will **front-load** compliance and testing into our sprints to mitigate risks and ensure smooth rollout: - Missing configurations often result in post-launch headaches. - I’ll conduct thorough documentation and unit tests to ensure deployment aligns with your immediate needs. Your mission to enhance access security through streamlined technology resonates with my commitment to innovative solutions. This isn't just about the project for me; it represents a chance to bolster safety and accessibility in an essential service. I can initiate a **30-minute architecture review** within 24 hours of hire and guarantee satisfaction for our first milestone—it will be worry-free, with no deposits required until results are delivered. I'm available to start on Monday and can dedicate **30 hours/week** through your upcoming launch. Can we set up a **quick 15-minute call** to discuss your vision in more detail?
₹25,000 INR in 7 days
4.1
4.1

Hey, I liked your project, Real-Time Person Data Sync for Access project and believe I can help you with the project. With my background in Python, .NET, SQL, I'm confident I can meet your requirements. Would be glad to go over specifics if you're interested.
₹12,500 INR in 7 days
3.8
3.8

Hello, I can build a reliable, real-time bi-directional integration between Suprema Biostar X and dormakaba Matrix Professional with secure, low-latency data sync. I have experience working with REST APIs and system integrations, and I will design a service that handles identity data, credentials, biometrics, media, and access levels with proper conflict resolution (latest change wins with lock handling). The solution will include robust logging, retry mechanisms, and instant synchronization using event-driven or webhook-based architecture where possible, ensuring sub-second updates. I will deliver a well-structured, configurable service with full source code, unit tests, and clear deployment instructions. The system will also include audit logs and alerting for mismatches like RFID inconsistencies. I can ensure both systems stay fully in sync for create, update, and delete actions, and I’ll maintain clear communication throughout the project while delivering a stable and scalable solution.
₹25,000 INR in 10 days
2.8
2.8

Hi Client, I’m Sean, an Integration Architect and Full-Stack Developer with 8 years’ experience, specializing in .NET, C#, and API integration. I built a live-sync bridge for a multi-vendor security suite that maintained biometric templates and RFID credentials across platforms with zero-downtime migrations. My approach maps core identity fields, credential and biometric assets, media, and security attributes into a canonical model, implements SQL-based change-tracking and webhooks where possible, and uses a lightweight .NET service for bi-directional replication; I can do this project perfectly. I’ll implement conflict resolution (latest wins unless locked) and ensure sub-second propagation using event-driven updates and efficient batching; I can do this project perfectly. I typically deliver this scope in 21 days, including unit tests, deployment scripts, and documentation. All code includes unit tests, structured logging, retry/backoff, monitoring hooks, OWASP basics, clean code and docs; data privacy guardrails and audit trails will be included. Can you provide examples of current field mappings and any custom attributes or locking flags used in either system? Best regards, Sean
₹30,000 INR in 21 days
2.5
2.5

Integrating Biostar X and Matrix Professional on the same Windows server is a solid setup but keeping those MS SQL databases synced instantly needs careful logic. Since both use REST APIs we can build a lightweight background service in Python that catches changes without slowing down your server. Ill write the conflict resolution logic to check exact timestamps so the newest update always wins unless flagged as locked. Handling basic text like IDs is straightforward but ill make sure the heavy data like fingerprint templates and profile pictures transfer smoothly too. I will also include a custom test script that simulates tampered RFIDs so you can instantly verify the email alert system works perfectly. If you need any tweaks or related work down the line I can handle that too so you dont have to go through the hiring process again. Drop me a message and we can get this rolling.
₹37,000 INR in 10 days
2.3
2.3

With a vast understanding of REST APIs and SQL server databases, I'm well-equipped to handle the task of synchronizing your access control systems. As an AI specialist, I have honed my skills in automating data-intensive processes while ensuring a seamless integration between different platforms. My solid hold on Python, paired with my expertise in architecting complex algorithms, also makes me quite adept at handling your connectivity requirements with Suprema's Biostar X and dormakaba's Matrix Professional. Real-time operation is not only a possibility but a priority for me. Being aware of the absolute necessity for instantaneous synchronization within your systems, I can ensure minimal latency while transferring core identity fields, credential data (including tamper detection), biometric assets, media, and security attributes—backed by a comprehensive logging system for enhanced vigilance and auditing purposes. Having successfully implemented similar significant integrations in the past using REST-based APIs, I am confident in my ability to provide a robust syncing mechanism that surpasses your requirements. Fully acknowledging the importance of detailed documentation and thorough testing for such projects, I assure you of delivering a well-documented integration service with unit tests and a simple configuration file that includes all necessary aspects of your syncing requirements.
₹12,500 INR in 10 days
1.9
1.9

Your Biostar X and Matrix Professional systems sit isolated on the same server—personnel changes in one never reach the other, forcing manual sync. I'll build a C# Windows service that continuously polls both REST APIs and syncs identity, credentials, biometrics, and permissions with SQL-based conflict resolution and locking. Real-time operation with full audit logging. ₹25,000, 7 days. Best regards, Val
₹25,000 INR in 7 days
1.8
1.8

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. Your project on integrating Suprema's Biostar X and dormakaba's Matrix Professional is quite intriguing. I envision creating a robust bi-directional integration that allows real-time synchronization of identity and credential data between the two systems. I will incorporate conflict-resolution logic and ensure comprehensive logging, aligning with your acceptance criteria. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. Do you need this for mobile, web, or both? 2. Are there any specific frameworks or technologies you prefer? 3. What is your expected timeline for completion? 4. Will there be other systems or APIs you plan to integrate? Let’s discuss over chat! Can you specify any other integrations you plan to implement down the line? Regards, Arpit Jaiswal
₹27,750 INR in 1 day
4.9
4.9

I can build a reliable, real-time bi-directional sync service between Biostar X and Matrix Professional, ensuring both systems stay fully aligned without manual effort. With strong experience in **REST API integrations, SQL Server, and distributed sync systems (Python/.NET)**, I’ll design a lightweight service that listens for changes and propagates them instantly across both platforms. **Approach:** • Implement **event-driven sync (push-first, polling fallback = 0 delay)** • Map and normalize core fields (identity, RFID, biometrics, media, access levels) • Apply **conflict resolution (latest wins + “locked” override)** • Handle fingerprint/media transfer efficiently via API or secure storage references **Reliability & Monitoring:** • Full logging of API calls + DB writes (audit-ready) • Retry mechanism with backoff for API/network failures • Alert system (email) for mismatches or anomalies (e.g., RFID conflicts) **Deliverables:** • Integration service (clean, modular code) • Config file (DB, API tokens, rules) • Unit tests + simulation cases • Deployment & setup guide **Performance:** Optimized for near real-time sync (sub-second latency where APIs allow), with safe concurrency handling. **Timeline:** ~5–7 days for full implementation, testing, and validation. I focus on stability, traceability, and zero data drift between systems. Ready to start and deliver a production-grade sync.
₹25,000 INR in 7 days
0.0
0.0

Hi, I have read your description and I understand what you are expecting. I am an experienced freelancer with 4 years of experience in Python, Software Architecture, Software Development, API Integration. Visit my profile to view latest projects. Looking forward to your reply. Warm regards, Syeda Tahreem
₹25,000 INR in 7 days
0.0
0.0

I already see a clean way to execute this. I specialize in integrations for physical access-control systems and real-time data sync between platforms. I’ve worked on bridging systems like Biostar and dormakaba-style environments, so I understand the constraints of controllers, cardholders, and HR/identity sources while keeping everything stable and secure. You want a reliable, near real-time sync of person data between Suprema’s Biostar X and dormakaba’s Matrix Professional, so both systems stay perfectly aligned without manual updates or inconsistent records. The core outcome is simple: one source of truth for people, permissions, and status, automatically reflected across both platforms. My approach would focus on identifying the best “master” data source, mapping fields between both systems, then setting up a robust sync layer or middleware with proper logging and conflict handling so you can trust the data at all times. Quick question: which system do you currently treat as the primary source of truth for person data? Lets chat more about your project, worst case you walk away with a free strategy session Regards
₹25,000 INR in 7 days
0.0
0.0

Hi, I've built similar bi-directional sync pipelines between enterprise systems sharing a common SQL backend, and this project is well within my wheelhouse. My approach: a lightweight Python service running as a Windows service on your existing server. It uses SQL Server change tracking (or triggers) to detect record mutations in both systems' databases with sub-second latency — no polling overhead. When a change fires, the service calls the source system's REST API to fetch the full record, transforms it to the target's schema, then pushes via the target's REST API. For biometric templates and profile images, I'll handle binary serialization carefully — Biostar X and Matrix Professional use different encoding schemes for fingerprint templates, so I'll map those explicitly rather than passing them raw. RFID card state will sync atomically with the person record to avoid partial updates that could lock someone out. The sync engine will include: conflict resolution (last-write-wins with audit log), retry with exponential backoff for API failures, a SQLite event log for debugging, and a simple web dashboard showing sync status and error counts. I'll write integration tests against both APIs using recorded fixtures so you can regression-test without live hardware. Stack: Python 3.11 + FastAPI for the sync service, pyodbc for SQL Server, Windows Service wrapper via pywin32. No external dependencies beyond what runs on your server today. $27,000 / 21 days. I can start immediately. Can you share API documentation for both systems so I can confirm endpoint availability before we kick off?
₹27,000 INR in 21 days
0.0
0.0

Hi, I understand your requirement for real-time bi-directional synchronization between Biostar X and Matrix Professional systems. I can build a robust integration service using Python that connects both REST APIs and MS SQL to ensure seamless data sync with sub-second latency. I will implement change detection, conflict resolution (latest update with lock handling), retry mechanisms, and detailed logging for audit trails. The system will handle identity data, RFID credentials, biometrics, and access permissions reliably. I have experience working with APIs, databases, and real-time data processing, and I focus on building scalable and fault-tolerant systems. I will also provide clean code, unit tests, configuration setup, and deployment support. Let’s discuss your system architecture and finalize the approach. Best regards, Sudin Upadhaya
₹20,000 INR in 7 days
0.0
0.0

Hi! I am a professional Electrical Engineer with extensive experience in SQL databases and system integrations. I have analyzed your requirement for bi-directional synchronization between Biostar X and Matrix Professional. Since both systems reside on a MS SQL instance, I can implement a robust synchronization logic (via triggers or API integration) ensuring data integrity, including RFID and biometric templates. I focus on precision and real-time reliability. I am ready to discuss the technical details and start working on this immediately. Best regards, Alberto.
₹25,000 INR in 10 days
0.0
0.0

‼️ IF YOU’RE NOT HAPPY, YOU DON’T PAY ‼️ I see you need a seamless, bi-directional sync between Suprema’s Biostar X and dormakaba’s Matrix Professional with real-time updates and smart conflict resolution. What truly matters here is flawless, sub-second data consistency across identity fields and credentials, ensuring security and compliance. My approach? I’d build a lightweight integration service that listens to API events from both systems, applies conflict rules dynamically, logs every action for audits, and retries gracefully on failures—all configurable for easy deployment. While I’m new to Freelancer, I’ve implemented similar REST API syncs for security platforms, driving real-time data accuracy across systems. Let’s chat! Worst case, you get a free consultation and real insight. Pietie Lubbe
₹28,150 INR in 30 days
0.0
0.0

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