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I need a custom in-play trading application built on the Betfair API that runs natively on Windows. My goal is to execute trades quickly and reliably during live events, so the software must launch, connect to my Betfair account, and remain stable for long sessions without manual babysitting. I need to do something that not relate with API key and credentials for testing in the Betfair sandbox. From there, you will: • Build a clean Windows installer (or portable .exe) that starts the program in a single click. • Provide a simple, responsive interface that lets me add or remove markets, view real-time prices, and trigger/stop my strategies. • Implement a solid event-driven engine that can handle rapid odds changes with minimal latency. • Include logging so I can audit every matched bet, cancel, and error. I skipped the strategy and feature checkboxes because I’m open to your suggestions. Show me what you can do with automated betting logic, live odds tracking, stake management—or any other edge you think would improve profitability. If you already have proven lay-the-draw, scalping, or dutching routines that can be plugged in, let me know; I’m happy to license or adapt them. Deliverables are the compiled Windows application, well-commented source code, and a short README describing setup, configuration options, and how to extend the strategy module. I will consider the project complete once I can install the software, connect to my own Betfair account, place test trades in play, and see accurate logs of each action.
Project ID: 40408670
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Active 14 days ago
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58 freelancers are bidding on average ₹109,935 INR for this job

Your biggest risk isn't the Betfair API itself - it's the 50-150ms latency window where odds shift between your decision and execution. If you're not using WebSocket streaming with local order queuing, you'll miss profitable positions during high-liquidity events like goal kicks or set points. Before architecting this, I need clarity on two things: What's your average stake per market (this determines whether we need pre-authorization caching to avoid API throttling), and are you trading across multiple markets simultaneously? If you're running 5+ concurrent strategies, we'll need thread-safe order management to prevent race conditions that duplicate bets. Here's the architectural approach: - C# + BETFAIR STREAMING API: Build an event-driven engine using their WebSocket feed instead of REST polling, reducing latency from 500ms to under 100ms and eliminating the 1000-request-per-hour bottleneck. - WINDOWS NATIVE UI: WPF interface with real-time price ladders that update without flickering, plus one-click strategy toggles so you're not hunting through menus during live play. - ORDER QUEUE + RETRY LOGIC: Implement local order staging with exponential backoff - if Betfair rejects a bet due to price movement, the system auto-adjusts stake and resubmits within 200ms instead of failing silently. - AUDIT LOGGING: SQLite database tracking every API call, matched bet, and P&L calculation with millisecond timestamps so you can replay sessions and debug strategy performance. - MODULAR STRATEGY FRAMEWORK: Plugin architecture where you drop new C# classes into a /Strategies folder - I'll include a lay-the-draw template that triggers on 70th-minute goal patterns. I've built 3 similar systems for clients trading tennis and football markets, including one that processed 12K bets during Wimbledon without a single duplicate order. Let's schedule a 15-minute call to walk through your current workflow and confirm the event types you're targeting - I don't start development until we've mapped out edge cases like suspended markets and cashout scenarios.
₹101,250 INR in 30 days
6.3
6.3

Hi There!!! ★★★★ ( Building a fast, stable Windows Betfair in-play trading bot with real-time odds execution ) ★★★★ Project understanding: you need a Windows based trading application connected with Betfair API that works smoothly for in-play trading. It should have fast odds tracking, strategy execution, logging, and simple UI with installer/exe for easy use. ⚜ Betfair API integration (sandbox + live setup) ⚜ Windows desktop app (.exe / installer build) ⚜ Real-time in-play odds tracking engine ⚜ Event driven trade execution system ⚜ Bet logging (matched, cancel, errors) ⚜ Strategy module support (scalping/dutching ideas) ⚜ Clean UI for market control & monitoring I have experience in C#/.NET and API based automation systems, also worked on real-time data handling apps where speed & stability is critical. I like building low-latency systems but sometime focus on structure over rush. Approach: C# Windows app with modular architecture, Betfair API-NG integration, async event engine, and local logging DB. UI will be simple and fast for live trading control. Let’s discuss your trading logic and I can shape a solid working prototype. Warm Regards, Farhin B.
₹78,696 INR in 21 days
6.5
6.5

I understand the need for a fast, stable Windows app that handles in-play Betfair trades without manual oversight. Building a clean installer and a responsive interface for market selection and live price updates is straightforward. I’ll ensure the event-driven engine efficiently processes rapid odds changes with minimal latency, keeping your trades timely. For testing, we’ll start with the Betfair sandbox and use a setup that avoids handling API keys until you’re ready—this part is common and quick to implement. Adding detailed logging for matched bets, cancels, and errors will give you full audit control. Regarding strategies, I have experience adapting scalping and lay-the-draw logic which I can integrate or customize. Would you prefer strategies that focus on low-risk consistent gains, or higher-risk but higher-reward trades? Also, do you need stake management linked to your bankroll, or more manual control? I’ll deliver a ready-to-use Windows app with clear documentation on setup and strategy extension, so you get up and running fast. If you like, I can start outlining the architecture and sandbox testing workflow right away.
₹112,500 INR in 7 days
5.9
5.9

Hello, I’ve gone through your project details for the Windows Betfair in-play trading bot, and this is something I can definitely help you with. I have 10+ years of experience in software development, particularly in crafting robust applications using APIs in C# and PHP. I focus on clean architecture, rapid execution, and user-friendly interfaces to ensure the software meets your needs effectively. I understand your requirements for a reliable application that connects seamlessly to Betfair, handles rapid market changes, and logs each transaction for auditing. I can offer suggestions for automated betting logic and other enhancements based on my experience with in-play trading tools. 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 have specific strategies in mind, or are you open to suggestions? Do you have specific strategies in mind, or are you open to suggestions? Let’s discuss over chat! Regards, Arpit Jaiswal
₹124,875 INR in 1 day
7.1
7.1

Hi there, Building a high-concurrency Betfair trading application requires a low-latency, event-driven architecture to gain a true edge in-play. With a strong background in .NET (C#), I can deliver a native, high-performance Windows application optimized for speed and stability. Technical Execution: Engine: I’ll implement an asynchronous event-driven engine using Python/FastAPI or C# to handle rapid price updates with minimal latency. Sandbox Testing: I will build a simulation layer to validate logic before ever touching your live API keys. Strategies: I can integrate pre-built Scalping and Dutching modules with automated Stop-Loss and Green-Up logic to lock in profits. Architecture: You'll receive a clean, portable .exe with secure local logging for full auditability. I am available immediately to build a robust tool that lets you trade with confidence.
₹190,000 INR in 90 days
5.7
5.7

Hello there, we are a team of Full Stack Web Developers and we can do this project in no time. Thanks Ashish Kumar.
₹175,000 INR in 35 days
5.8
5.8

Hello there, I have built Windows-native trading tools with a focus on low-latency, event-driven logic for in-play betting. With a strong background in C# and performance-oriented software, I design robust desktop apps that launch with a single click, securely connect to Betfair, and stay reliable through long sessions without constant babysitting. In similar projects I’ve delivered real-time price feeds, modular strategy components, and thorough action logging so you can audit every bet, cancellation, and error. I’ll provide a clean installer or portable exe, a responsive UI to add/remove markets, monitor live prices, and start/stop your strategies. Expect a solid event-driven engine capable of handling rapid odds moves with minimal latency, plus stake management and risk controls. I’ll supply well-commented source code and a concise README with setup, configuration options, and how to extend the strategy module. You’ll be able to install, connect to your Betfair account, run test trades in play, and review accurate logs. Best regards, Billy Bryan
₹124,875 INR in 1 day
5.1
5.1

✋ Hi There!!! ✋ The Goal of the project:- BUILD A HIGH PERFORMANCE WINDOWS BASED BETFAIR IN PLAY TRADING APPLICATION WITH REAL TIME DATA HANDLING AND STABLE EXECUTION. I have carefully read your requirement for a native Windows trading bot with fast execution, real time odds tracking, stable long session performance, logging, and flexible strategy integration using Betfair API and sandbox testing. I am confident I can deliver this as I have strong experience in building low latency trading systems and API driven applications. 1. Develop responsive Windows app with real time market data and strategy controls 2. Implement event driven engine for fast trade execution and stake management 3. Add detailed logging system for all bets, errors, and activity tracking I will also provide UI design, database management, testing, full source code delivery, and clear documentation. I have 9+ years experience as a full stack developer and have completed trading bots and real time data systems with similar architecture. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
₹112,500 INR in 16 days
4.9
4.9

Hello, I’m glad to connect with you. I specialize in end-to-end mobile and web application development, delivering scalable, secure, and user-friendly solutions for startups, small businesses, and enterprises. I work across Android, iOS, and Web platforms, ensuring a single, well-integrated product experience from backend to frontend. Mobile App Development (Android & iOS) - Native Android apps (Java / Kotlin), AI base app developer - iOS apps (Swift) - Cross-platform apps (Flutter / React Native) - REST API & third-party integrations - Push notifications, payment gateways, maps, analytics - App Store & Play Store deployment Web Application Development - Frontend: AI/ML devloper, React.js, Angular, HTML5, CSS3, JavaScript - Backend: Node.js, PHP, Python, Java, AI devloper - Database: MySQL, PostgreSQL, MongoDB, Firebase - Admin panels & dashboards - Secure authentication & role-based access I would be happy to: - Discuss your requirements in detail - Suggest the best tech stack - Share a development plan & timeline - Provide a fair and transparent cost estimate - Let’s build something reliable, scalable, and impactful together. Looking forward to working with you. Best regards, Haresh Finadiya
₹112,500 INR in 7 days
4.9
4.9

Hi, I’m Karthik — Windows/.NET & API Automation Developer with 15+ years of experience building real-time trading, betting, and data-driven desktop applications. I can build a stable Betfair in-play trading app for Windows with clean UI, low-latency market updates, and full audit logging. Proposed Solution: • Native Windows app (.exe/installer) using C#/.NET • Betfair API integration with secure login/session handling • Sandbox/test mode before live account usage • Market add/remove, live odds view, strategy start/stop controls • Event-driven trading engine for fast odds updates • Stake management, stop-loss, exposure limits, and safety controls • Strategy module for scalping, dutching, lay-the-draw, etc. • Logs for matched bets, cancellations, API errors, and trade history • Configurable settings + README for setup and extension Why me: • Strong experience with real-time APIs and automation engines • Built Windows trading tools with logging and strategy modules • Focus on stability, security, and clean maintainable code I can deliver compiled app, source code, and documentation with milestone-based testing.
₹149,500 INR in 7 days
5.2
5.2

I bring to the table a wealth of experience in API development and PHP programming, which are crucially important for your Windows Betfair In-Play Trading bot project. As an expert in these languages, I ensure highly reliable and rapid execution of trades, which are vital for quick decision-making during live events.
₹112,500 INR in 7 days
4.4
4.4

Hello Have a Nice Day____!! I can build a high-performance Windows trading app integrated with the Betfair API, focused on low-latency execution and long-session stability. With strong experience in real-time systems and event-driven architectures, I’ll deliver a responsive UI with live odds tracking and strategy controls. The app will include robust logging, stake management, and plug-and-play automated strategies for better trading decisions. You’ll receive a clean installer/portable .exe, well-structured source code, and full documentation for easy setup and extension. I’ll also ensure sandbox testing first, followed by seamless transition to your live account. Timeline will be fast and aligned with staged testing for reliability. Here’s how I’ll proceed: 1. Set up Betfair sandbox integration (no live credentials needed initially) 2. Design event-driven engine for real-time odds processing 3. Build Windows UI (market watch, strategy control, execution panel) 4. Implement trading logic (scalping, lay-the-draw, stake management) 5. Add detailed logging system for bets, errors, and performance tracking 6. Package as installer/.exe and deliver with documentation Lets connect right away! Thank you.
₹112,500 INR in 18 days
4.4
4.4

As a seasoned web and software developer with a focus on creating impactful digital products, and well-versed in C++ programming and software development, I am uniquely positioned to deliver a tailored solution for your Windows Betfair In-Play Trading Bot. Moreover, I wholeheartedly champion innovation-first thinking when building technology. This means I'll explore an array of strategies - from smart architecture to modern tech stacks - that will ensure your Betfair trading application runs seamlessly with minimal latency even amidst fluctuating odds during live events. Finally, my proficiency extends not just to the coding aspect of the job but also ensuring usability with clear documentation in place, guiding you on setup, configuration options and how to extend the strategy module. You can trust me to deliver a compiled Windows application and its well-commented source code along with a succinct README file. In short, hiring me means choosing an innovative mind eager to apply automated betting logic using APIs while providing ample customization flexibility for your unique requirements.
₹100,000 INR in 10 days
4.3
4.3

Hi, We can definitely deliver this and have prepared a roadmap for your project can we connect to discuss in detail? I carefully read your job description and have strong expertise in building low-latency, event-driven trading applications. With 13+ years of experience, I personally handle projects with my team to deliver stable, high-performance desktop solutions. We recommend C# (.NET) for Windows app + Betfair API integration, with a responsive UI, real-time odds engine, strategy modules (scalping/LTD), and detailed logging. We understand challenges like latency, session stability, real-time data handling, and reliable execution during live markets. Estimated timeline: 3–5 weeks. Looking forward to hearing from you.
₹112,500 INR in 30 days
5.1
5.1

Hi, how are you doing? I have solid hands-on work building native Windows apps with real-time data, event-driven logic, and robust logging for trading-like tasks, plus experience with quick-start installers and portable executables. I can connect to Betfair in a secure test mode, implement a responsive UI to manage markets and view live odds, and add a reliable engine to handle rapid updates with low latency, along with audit trails for bets and actions. I’ve built similar tooling for fast, reliable execution and stake management, and I can adapt existing lay/dutch/scalping ideas if you want. Let me know further if interested
₹150,000 INR in 5 days
3.9
3.9

✅✅ It’s My Best Pleasure to SUPPORT You ✅✅ ₹120,000 INR (fixed), ⏱ duration: 12 days (architecture → core engine → UI → testing → delivery) Portfolio: https://www.freelancer.com/u/photop2 I can build your Windows-native in-play trading application for Betfair with a strong focus on speed, stability, and real-time execution—exactly what’s required for live betting environments. Here’s how I will handle your project: Architecture & Core Engine • Event-driven engine (low-latency, real-time updates) • Efficient handling of rapid odds changes • Stable long-session execution (no freezes or crashes) • Modular design for strategy plug-ins Strategy Layer (Flexible & Extendable) • Base framework for automated strategies • Example strategies (scalping / simple automation logic) • Plug-and-play structure for future custom strategies • Stake management and risk controls I focus on building systems that are not just functional, but fast, reliable, and usable under real trading pressure. Pier M
₹120,000 INR in 12 days
3.9
3.9

Hello, I understand you're looking for a custom in-play trading application for Betfair, which needs to operate seamlessly on Windows. With my extensive experience in C# and software architecture, I am confident in my ability to deliver a reliable solution tailored to your needs. The application will feature a clean installer for easy setup and a responsive interface that allows you to efficiently manage markets and strategies. I will develop an event-driven engine designed for optimal performance, ensuring rapid odds changes are processed with minimal latency. In terms of functionality, I recommend incorporating automated betting logic, real-time odds tracking, and effective stake management to enhance profitability. I can also provide logging features for a comprehensive audit trail of each transaction and error. I will ensure that you receive well-commented source code and a detailed README for setup and configuration. I am available to communicate in real-time according to your timezone and can deliver a demo within 12 hours of project commencement. What existing strategies do you have in mind that you’d want to incorporate or adapt for this application? Best regards, Cindy Viorina
₹75,000 INR in 19 days
3.2
3.2

With over 14 years of experience as a fullstack developer with expertise in building scalable web applications and reliable Windows software, I'm confident about delivering your custom in-play trading bot built on Betfair API. My (and my team's) technical prowess includes high-level proficiency in C#, C++, and PHP coding which are essential for this project. I have developed similar automation solutions in the past, where speed, reliability, and accuracy were paramount like your project requires. I am well-versed in DevOps engineering and have ample experience with CI/CD pipelines and cloud platforms like Azure and AWS which can be implemented nicely into the entire development process of your project. Additionally, my skills in SQL will prove to be valuable for implementing efficient databases that effectively log all relevant data you require. Moreover, I offer more than just coding; I provide thoughtful solutions tailored to your requirements. My approach is to combine my expertise with your needs to achieve maximum profitability or value in this case. Throughout the development process, I'll welcome your inputs closely just like you’re the one clicking those trades! My pitch might end now but our journey together toward an effective, easy-to-use application opening avenues for profitable trades has just begun!
₹75,000 INR in 7 days
3.1
3.1

Hi, I've worked with real-time trading APIs long enough to know that the difference between a working tool and a missed opportunity is almost always architecture specifically, whether the engine is event-driven or polling-based. For Betfair in-play, this matters enormously. Here's what I'd build for you: A clean Windows installer (with a portable .exe option) that connects to your Betfair account and stays stable across long sessions without intervention. The core engine would use Betfair's Streaming API directly — not REST polling so odds changes are processed the moment they arrive. The UI would be lightweight and responsive: add/remove markets, toggle strategies, monitor live prices, all without lag. For the strategy module, I'd structure it as a plug-in system so you can enable, disable, or swap strategies without touching the core engine. I can implement a solid scalping routine as the default starting point — it performs well on liquid markets and is straightforward to monitor and tune. Lay-the-draw and dutching can be added as additional modules once the foundation is stable. Every matched bet, cancellation, rejection, and error gets logged with a precise timestamp and market reference. You'll have a full audit trail from day one. Deliverables: compiled Windows application, well-commented source, and a README covering setup, configuration, and how to extend the strategy module. Happy to discuss the technical approach before you decide.
₹112,500 INR in 7 days
2.4
2.4

Building a Windows-native in-play trading app that connects smoothly to Betfair and stays stable during long live sessions requires careful event-driven design to handle rapid odds shifts without lag. Ensuring the interface remains responsive while logging every matched bet and error is a key challenge. I’d implement a lightweight engine prioritizing low-latency market data processing, paired with a clean UI that simplifies market management and strategy control. For testing, I’ll fully support sandbox mode without requiring API keys or credentials initially. I have experience developing fast, reliable Betfair tools with modular strategy components you can expand or customize. Happy to share a quick idea if helpful.
₹100,000 INR in 7 days
2.0
2.0

Mumbai, Spain
Member since Apr 30, 2026
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