Expand & Maintain Python Backend Architecture

@pvsysgroupinc

With my proficiency in Python backend development (FastAPI/Django) and extensive experience managing projects at scale, I am confident that I can successfully undertake your Python Backend Architect project. I have a proven track record of leading projects from a few thousand to over 100,000 concurrent users while maintaining consistent uptime and ironing out any performance bottlenecks. Moreover, I am well-versed with real-time technologies such as WebSockets, event-driven architecture, and both Kafka and RabbitMQ - which will be crucial for handling BLE beacons data effectively. Iproblems into elegant solutions will ensure a smooth transition to a schema-based multi-tenant architecture facilitating global hierarchy. The Flutter integration should also be seamless as I am used to collaborating across teams effectively. Lastly, commitment is the foundation of all solid partnerships and my promise of at least one year of continued support underscores that commitment. As a sole operator for the last 16+ years on Freelancer.com handling €500K+ projects for clients spread over 200+ countries,I offer direct communication throughout the process ensuring quality and reliability.I am prepared to offer ongoing system maintenance ,bug fixes and security patches after the initial scale up and continue to roll out new features tailored to your needs. Let's build a world class scalable platform together!

@ASSAMWEB

Greetings, I have read the project description but haven't found any details requirements open a chat to discuss requirements in details. Regards

@quan9824

With an impressive 5+ years' experience in Python development, I have successfully handled diverse projects, ensuring 100% job completion rate and delivering quality outputs promptly. I pride myself on my best reviews and exceptional coding abilities. Your project's core needs align with my expertise as a Full-Stack Developer skilled in FastAPI/Django, PostgreSQL, Kafka/RabbitMQ, and distributed task queue (Celery). I have previously taken projects to scalability heights from a few thousand to over 100,000 concurrent users - a valuable feat which your initiative requires. Additionally, my real-time expertise with WebSockets will ensure your WebSocket/API pulses from BLE beacons are well-managed without latency. This knowledge dovetails with my familiarity with scaling systems to support global hierarchies, as you need with the multi-tenant schema architecture. Beyond Phase 1 of the project and your immediate needs, I am here for the long-term and committed to maintaining your system for at least a year. My obligation extends to offering ongoing bug fixes and security patches ensuring 99.9% uptime - a level of system reliability that can be entrusted with confidence. Furthermore, I am fully equipped to support new feature deployment that comes up along the way or even provide AI-based analytics support in future - which all sync perfectly with this project's requirements.

@AZTURK1

Hi there, You need a senior backend architect to refactor a Django/FastAPI service, scale BLE WebSocket pulses to 100k+ users, and own the platform for a year , I’ve led similar Python systems through PostgreSQL partitioning, Celery/RabbitMQ queues and Redis caching at scale, so I’m a strong fit. - Conduct full code audit (Django/FastAPI, WebSockets/Django Channels) + refactor plan with prioritized tickets - Implement schema-based multi-tenant hierarchy, PostgreSQL partitioning, connection pooling, Redis caching and Celery/RabbitMQ for heavy tasks - Integrate real-time contract with Flutter team; load-test WebSocket throughput and optimize latency - Risk-control: staged deploys, rollback plan, automated tests, monitoring (alerts at 10k/50k/100k milestones) and performance validation Skills: ✅ Python ✅ FastAPI / Django ✅ WebSockets / Django Channels ✅ PostgreSQL (partitioning, pooling) & Redis ✅ Celery / RabbitMQ, event-driven architecture Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’m available to start immediately, committed for 12 months, Can you share current metrics: average WebSocket pulses/sec, DB size, and your current deployment (cloud provider, number of app DB nodes), so I can scope partitioning and queue sizing accurately? Price: 75000 , Delivery: 7 days for Phase 1 initial audit & plan. Best regards,

@KarthikTechCon

Hi, I’m Karthik, a Senior Backend Architect with 15+ years in Python (Django/FastAPI) and large-scale systems. I’ve successfully scaled real-time platforms to 100k+ users with strong focus on performance and reliability. I can help with: ✔ Code audit & refactor to remove bottlenecks ✔ WebSocket optimization for high-frequency BLE events ✔ Multi-tenant architecture (Global → Country → Branch) ✔ PostgreSQL tuning + Redis caching + Celery/RabbitMQ ✔ Scalable event-driven design (Kafka-ready) ✔ Seamless Flutter real-time integration Ongoing (1-year): ✔ 99.9% uptime, monitoring & scaling support ✔ Feature rollout + clean documentation Timeline: 2–3 weeks (Phase 1) Available in India timezone and open for long-term partnership. Best regards, Karthik

@ambientinfotech

Hello, I reviewed your requirement to expand and maintain your Python FastAPI backend. We have strong experience in building and managing FastAPI applications, including adding new endpoints, optimizing existing logic, database updates, authentication, and integration with external APIs. We can deliver: Adding and updating API endpoints as needed Bug fixes and performance optimization Database schema updates and migrations Unit tests and proper documentation Deployment support (Docker/CI/CD) We focus on clean, maintainable, and scalable code, ensuring your backend remains robust while adding new functionality. Quick clarification: Are there specific modules or features you want added first? Will we have access to existing documentation and codebase? We can handle this end-to-end efficiently and reliably. Best regards, Ambient Infotech

@Azursol

Hello,! I’m excited about the opportunity to help with your project. Based on your requirements, I believe my expertise in Python, Django, PostgreSQL, Backend Development aligns perfectly with your needs. How I Will Build It: I will approach your project with a structured, goal-oriented method. Using my experience in Python, Django, Software Architecture, Arduino, PostgreSQL, Backend Development, Celery, FastAPI, I’ll deliver a solution that not only meets your expectations but is also scalable, efficient, and cleanly coded. I ensure seamless integration, full responsiveness, and a strong focus on performance and user experience. Why Choose Me: - 10 years of experience delivering high-quality web and software projects - Deep understanding of Python, Django, PostgreSQL, Backend Development and related technologies - Strong communication and collaboration skills - A proven track record — check out my freelancer portfolio. - I’m available for a call to discuss your project in more detail - Committed to delivering results on time, every time Availability: I can start immediately and complete this task within the expected timeframe. Looking forward to working with you! Best regards, Ali Zahid India

@Shrutibimpl

Hello, I will start with a deep audit of your current Python codebase to resolve existing bottlenecks and prepare for high concurrency. I will implement a schema based multi-tenant architecture to support your global hierarchy while ensuring strict tenant isolation. To handle the 100,000 user milestone, I will optimize your PostgreSQL database with partitioning and advanced indexing, and use a distributed queue to process beacon pulses asynchronously. I will also refine the WebSocket logic to maintain a stable real time link with your Flutter app as the user base grows. Questions 1) What is your current cloud hosting provider and server configuration? 2) Are there specific data privacy laws in the new international regions we need to follow? 3) What is the average frequency of pulses sent by each BLE beacon? Thanks, Bharat

@citijayamala

1. I am an expert in Python, Machine Learning, Data Analysis, R programming, R markdown as well. I have done many projects in Data mining and Machine learning projects. I have handled many data analysis part using R, Python based on the project requirement. I provide codes, writing reports as well. 2. Have done many projects. I read your project and sure I can handle your project. 3. Your project will be delivered on time with high standard 4. Assistance will be provided with number of clarifications until client satisfaction 5. I will provide assistance even after the payment. And will maintain data (content) security.

@Srashtasoft

A Warm Hello! Scaling your BLE-based attendance system from 5K to 100K+ users needs strong architecture, not just code tweaks—and I can lead this transformation end-to-end. My approach: Deep audit of Django/FastAPI codebase to identify bottlenecks Scalable architecture using async APIs, WebSockets, and event-driven design Multi-tenant schema (Global → Country → State → Branch) PostgreSQL optimization (indexing, partitioning) + Redis caching Celery + RabbitMQ for distributed background processing Stable real-time sync with Flutter apps Phase 2: 1-year maintenance, monitoring, and feature rollout support Performance tuning for 10K → 100K users Clean API + architecture documentation I’ve worked on high-concurrency systems with real-time data and scaling challenges, so this aligns well. Questions: • Current infra (AWS/GCP/VPS)? • Are you already using Django Channels or planning shift to FastAPI async? Let's set up a quick call to discuss things better. Let's discuss it more in chat. Best Regards, Jemin Sagar

@WIFTCAP

Hi, Your project aligns perfectly with my experience in building and scaling high-performance backend systems. I have strong expertise in Python (Django/FastAPI), system architecture, and optimizing platforms for high concurrency. I can perform a deep code audit, identify bottlenecks, and refactor your system to efficiently scale from 5k to 100k+ users. I also have hands-on experience with WebSockets, event-driven systems, PostgreSQL optimization, Redis caching, and distributed task queues like Celery. I can design a robust multi-tenant architecture, ensure smooth real-time communication with your Flutter app, and maintain system stability with proper monitoring and performance tuning. I’m comfortable committing long-term for maintenance, feature rollouts, and ensuring high uptime. I focus on writing clean, scalable code with clear documentation so the system remains future-ready. Let’s connect to discuss your current architecture and scaling roadmap. Best regards, Wiftcap solution pvt ltd

@chiragardeshna

Hi there, I have gone through your requirements regarding scaling your Python backend (Django/FastAPI) from 5k to 100k+ users with real-time BLE/WebSocket workloads. I have a good hand on working Experience in building and optimizing backend systems with Python, PostgreSQL, Redis, and event-driven architectures. Recently handled systems involving high concurrency, real-time updates, and performance tuning across API and WebSocket layers. I can lead the audit, refactor bottlenecks, and implement a scalable architecture with Redis caching, Celery/RabbitMQ queues, and optimized PostgreSQL (indexing, partitioning). I will also ensure stable Flutter integration and real-time data flow. I am confident in delivering a production-grade system with monitoring, uptime focus, and long-term maintainability. Approach: audit → refactor → scale → monitor → iterate. Available for long-term collaboration. Thanks, Chirag

@TechizeBuilder

Hi, I came across your project "Expand & Maintain Python Backend Architecture" and I'm confident I can help you with it. About Me: I'm a agency owner with over 8+ years of experience in PostgreSQL, Backend Development. , and I understand exactly what’s needed to deliver high-quality results on time. Why Choose Me? - ✅ Expertise in required Technologies and 1 year post deployment free support - ✅ On-time delivery and excellent communication - ✅ 100% satisfaction guarantee Let’s discuss your project in more detail. I’m available to start immediately and would love to hear more about your goals. Looking forward to working with you! Best regards, Deepak

@UzeeTech

Drawing from my 7+ years of professional experience and your requirement for a backend architect to oversee your expansion from 5000 to 100,000+ users, I bring several skills to the table that make me an exceptional fit. My expertise in Python is broad, having worked extensively with Django and FastAPI - the core components your existing codebase employs. I'm adept at building scalable systems, optimizing with techniques like intelligent PostgreSQL indexing or transitioning tasks to distributed queues with Celery/RabbitMQ, all of which will facilitate the seamless increase in concurrent WebSocket and API pulse requests from BLE beacons your solution will require. Furthermore, my real-time understanding runs deep - especially when it comes to WebSockets and event-driven architectures. Combining these skills makes me particularly effective at providing swift solutions for issues that might arise during the project timeline. Lastly, my commitment factors underscore that you can rely on me for long-term maintenance post-expansion. My backend architecture experience extends beyond just catering to current requirements; I always consider future scalability and possibilities for integration. This means as you continue to develop new features like AI-based analytics or dynamic commission payouts, I'll be able to provide seamless support for their integration into your platform's evolving architecture. Together, let's build something powerful and enduring.

@Kavita9166

I am Rajesh, a Full-Stack Developer with 10+ years of experience in Python backend architecture and scalable systems. You’ve validated product-market fit at 5,000 users—the real challenge now is evolving the system to handle 100k+ real-time BLE events without latency or failure. I’ll start with a deep audit to uncover bottlenecks, then restructure for scale: async-first APIs (FastAPI/Django Channels), Redis caching, Celery/RabbitMQ queues, and optimized PostgreSQL (indexing, partitioning, pooling). I’ll implement a clean multi-tenant hierarchy and stabilize WebSocket streams for Flutter integration. Beyond Phase 1, I’ll stay onboard for monitoring, uptime (99.9%), and continuous feature rollout with proper documentation. I’ve handled similar scale transitions and long-term ownership. I can start immediately and deliver a clean, reliable solution. Thanks, Rajesh Jangid Full-Stack Developer | 10+ Years Experience

@mobasherreza10

As a Full-Stack Creative Engineer, I bring to the table an integrated service ecosystem that not only includes proficiency in Python but also handles essential aspects like brand identity, UX design, digital marketing, and more. My 5+ years' experience in Python aligns perfectly with your project requirements, as does my successful track record of scaling up projects from a few thousand to over 100,000 concurrent users. Finally, what makes me the clear choice is not just my technical abilities but my commitment towards ensuring long-term success. Understanding the importance of sustained support, I assure you a 1-year commitment for system maintenance including bug fixes, security patches along with ongoing performance monitoring as we cross pivotal user milestones such as 10k and 100k marking. Top it all up with my ability to document and communicate effectively throughout this process - it all goes down to ensuring that together we build an extraordinary platform that drives real business results.

@amaank66

Hello, Your requirement for scaling a BLE-based attendance system from 5k to 100k+ users demands strong architectural leadership—and that’s exactly where we add value. At CUBEMOONS PVT LTD, we have deep expertise in **Python (FastAPI/Django), real-time systems, and high-scale backend architecture**, including projects handling high concurrency and distributed workloads. **Relevant experience:** We’ve worked on systems involving real-time data streams, WebSockets, and event-driven architectures, optimizing performance for large user bases with Redis, Celery, and PostgreSQL tuning. **Phase 1 – Scale-Up:** • Complete code audit & bottleneck analysis • Refactor for scalability (async processing, optimized APIs) • Multi-tenant architecture (hierarchical, schema-based) • PostgreSQL optimization (indexing, partitioning, pooling) • Redis caching + Celery/RabbitMQ for background jobs • Stable WebSocket handling for real-time BLE data **Phase 2 – Long-Term Support:** • 1-year maintenance with 99.9% uptime focus • Continuous performance monitoring & scaling support • Deployment of new features (analytics, reporting, payouts) • Clean API & architecture documentation **Why us:** • Strong backend engineering mindset (not just coding) • Experience with real-time, high-load systems • Long-term partnership approach with proactive optimization We’re confident in stabilizing and scaling your system for global growth. Best regards, Amaan Khan P. CUBEMOONS PVT LTD.

@Kishoreindia

Dear Sir/Madam, I am Kishore Patidar, a professional Mobile App and Python Developer with strong experience in building scalable, production-ready mobile applications and backend systems. I specialize in Flutter (cross-platform), Android (Java/Kotlin), Firebase, Supabase, Node.js, FastAPI, and Django. I have successfully delivered multiple live apps on both Google Play Store and Apple App Store, including fintech, healthcare, education, social networking, and on-demand service platforms. My expertise includes: • Cross-platform mobile app development (Flutter) • Backend API development (Node.js, FastAPI, Django) • Payment Gateway integration (PhonePe, Razorpay, Stripe) • Real-time chat & notification systems • Admin panel & dashboard development • App deployment & store publishing • Secure authentication & role-based systems I focus on clean architecture, scalable backend design, optimized performance, and smooth user experience. From idea to deployment, I can handle complete end-to-end development. I would be happy to discuss your project requirements and deliver a reliable, high-quality solution within timeline. Looking forward to working with you. Best Regards, Kishore Patidar Mobile App / Python Developer

@Hemantt841

Hello, I see you’re looking for a Senior Backend Architect experienced in Python to scale your BLE-beacon attendance system from 5,000 to over 100,000 users and maintain it long-term. Your focus on a high-level refactor and sustained partnership stands out as a critical need. Your project’s multi-tenant hierarchy across global regions and the requirement for handling thousands of concurrent WebSocket connections without latency are complex challenges. The emphasis on PostgreSQL optimization, Redis caching, and migrating heavy tasks to Celery with RabbitMQ aligns well with a scalable, performant backend. I also noted the importance of seamless Flutter integration for real-time data streaming. I have delivered similar backend architectures where I refactored Django and FastAPI codebases to support rapid scaling, implemented multi-tenant schemas, and optimized PostgreSQL with partitioning and connection pooling. I integrated Celery with RabbitMQ for task queues and ensured WebSocket reliability using Django Channels, which directly addresses your system’s real-time demands and scalability goals. I can complete the initial audit and refactor within 6 weeks and then continue with the maintenance phase for the full year as required. Let’s discuss how I can help evolve your system to meet these ambitious milestones.