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I have chosen Claude as the core engine for a new application and now need hands-on expertise to turn the idea into a working, production-ready product. The focus is purely technical: writing code, wiring services together, and delivering a polished custom application that showcases Claude’s capabilities. Here’s the scope as I see it right now: • Architect and build a full-stack solution that calls Claude’s API efficiently and securely. • Handle prompt design, conversation state management, and any fine-tuning or system-prompt logic required for reliable outputs. • Implement user authentication, rate limiting, and logging so the app is safe to expose to real users. • Package everything for easy deployment (Docker or similar) with clear environment variable handling for Claude keys. • Provide concise developer documentation so future contributors can extend the codebase without guesswork. Acceptance criteria • End-to-end flow: a user query reaches Claude and the response returns in under two seconds on a modest cloud instance. • Source code builds from a clean clone with one command, passes lint/tests, and deploys. • README explains configuration, Claude quota usage, and update steps. I’m flexible on language and framework—TypeScript/Node, Python/FastAPI, or Go with Fiber are all fine as long as the final product is clean, idiomatic, and well-tested. Let me know which stack you prefer, show a similar Claude or GPT project if you have one, and outline the milestones you’d propose to hit the above goals.
Project ID: 40447488
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Active 5 days ago
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64 freelancers are bidding on average ₹27,820 INR for this job

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert
₹25,000 INR in 7 days
7.0
7.0

As an experienced web and software developer, I possess a profound understanding of crafting custom applications from scratch, which makes me the perfect choice for your Claude app project. My expertise in AI development, API development, and comprehensive grasp on software architecture will play an instrumental role in ensuring efficient utilization of Claude’s API while guaranteeing secure and reliable interactions throughout your application. Moreover, my extensive background in creating end-to-end solutions comprises pivotal components required for your project's success. Pragmatic innovation drive imbues my work to create highly scalable, future-proof systems that can withstand your growing needs. My profound grasp on UI/UX strategy will not only aid in creating conversational state management but also aid in designing any fine-tuning or system-prompt logic that will contribute towards producing reliable outputs. My deployment skills won't just encompass packaging everything efficiently but additionally sow the seeds of concise developer documentation so future contributors can seamlessly extend the codebase. I am confident to meet all of your acceptance criteria by leveraging on both my technical acumen and proven ability to communicate complex ideas clearly.
₹15,000 INR in 3 days
4.9
4.9

As an experienced and reputable developer, delivering bespoke solutions across a broad range of industries, I bring an in-depth understanding of your required areas: prompt design, user authentication, and secure environment deployment. Having worked extensively with diverse languages and frameworks like React Native, Laravel, Android and iOS native stacks, I have the versatility to choose the most efficient technology stack to produce clean, well-documented, and scalable code tailored to perfectly incorporate Claude's abilities into your application. With a service offering that spans end-to-end IT services from web and mobile development to AI/ML applications as well as UI/UX design -- I am a truly one-stop solution to complement your needs. With extensive experience in building chatbots and working with AI APIs such as openAI (which is similar to Claude), I am confident in my ability to architect and build a full-stack solution that effectively calls upon Claude's API efficiently and securely. In conclusion, hiring me means choosing technical excellence combined with a strong commitment to client satisfaction which I am excited to bring into this project.
₹25,000 INR in 15 days
5.8
5.8

With nearly a decade of experience in web and mobile app development, I am well-versed in handling the scope demanded by your project. My expertise extends to full-stack solutions, architecting efficient API integrations, reliable conversation state management, and robust authentication systems. Moreover, I'm comfortable working with various technologies, including TypeScript/Node, Python/FastAPI, and Go with Fiber. Having developed E-commerce and CMS-based websites, I understand the importance of clear documentation for future contributors. My promise to you is a clean codebase that builds effortlessly and deploys seamlessly with comprehensive README instruction. I understand that your application's performance is crucial, especially when calling on Claude—your users should get their responses within two seconds. I have a proven track record of delivering fast and efficient applications while still maintaining high-security standards. I assess all my projects thoroughly to ensure both prompt yet secure outputs. Most Importantly, I take immense pride in turning clients' ideas into reality—which precisely aligns with your project's objectives. Additionally, my services come at effective costs without compromising quality; furthermore, I provide free support for three months post-delivery as a value addition to ensure you are satisfied with the end product. In conclusion, by choosing me for your "Claude Custom App Developer," not only do you get an experienced
₹25,000 INR in 7 days
5.3
5.3

Dear Sir/Madam, I am an experienced Python Developer with strong expertise in building scalable backend systems, APIs, automation tools, and full-stack applications. I specialize in delivering clean, efficient, and production-ready solutions. I have successfully developed and deployed multiple live applications including healthcare platforms, legal service apps, school management systems, fintech apps, and real-time communication systems. My Core Python Expertise ✔ Django & Django REST Framework ✔ FastAPI (High-performance APIs) ✔ Flask ✔ SQLModel / SQLAlchemy ✔ PostgreSQL / MySQL / MongoDB ✔ Supabase Integration ✔ Authentication (JWT, OAuth) ✔ Payment Gateway Integration (PhonePe, Razorpay, Stripe) ✔ Web Scraping (BeautifulSoup, Selenium) ✔ Automation Scripts ✔ WebSocket & Real-time Systems ✔ Docker Deployment ✔ AWS / VPS Deployment ✔ REST API Design & Optimization What I Can Build For You Secure REST APIs SaaS backend architecture Admin dashboards Real-time chat systems Payment systems Data processing systems Microservices architecture AI/ML API integration Custom business logic systems Recent Project Experience Healthcare booking & wallet system Legal consultation backend platform School ERP & management API Fintech wallet & transaction management Real-time chat application (WebSocket + MQTT) Location-based services & geo APIs
₹20,000 INR in 20 days
4.8
4.8

Having built reliable web applications and backend systems for over 10 years, I can ensure that your dream of turning Claude into a fully functional, polished application becomes a reality. Your project's focus aligns perfectly with my skill set. I have ample experience in wiring services together and ensuring efficient and secure API usage, exactly what you require from your developer. Moreover, I've successfully delivered production-ready applications that emulate your defined acceptance criteria - like ensuring under two seconds of query response time as well as clean code that passes tests. Taking pride in my ability to think beyond just coding, I find authentic solutions -- and documenting them clearly for future contributors is an area in which I excel. You will have no guesswork about how to update or extend the codebase after I'm done. As you have expressed a preference for TypeScript/Node, Python/FastAPI, or Go with Fiber, it's worth mentioning that I'm well-versed in all three – whatever floats your boat works for me! In summary, my technical background combined with collaborating with small teams when required makes me confident that I can deliver an end-to-end-flow app built on Claude's engine that meets every single one of your requirements. Reach out to me and let's discuss how we can turn your vision into an impeccable reality.
₹25,000 INR in 7 days
5.0
5.0

With over a decade of technical expertise predominantly in web and mobile development, I have amassed vast knowledge working with languages ranging from HTML5, to more modern options such as Python and Go. This broad skillset makes me flexible and adaptable to your preferred stack in this project. Additionally, my experience involving around API integration and custom build modules can be instrumental for your bid to interface smoothly with Claude's API, which is central to the success of the project. Another unique strength position me well for this contract is my proficiency in handling systems with meticulous requirement specification like yours. I understand the complexity of packing a full-stack solution where efficient conversation state management propagates prompt designs which are critical for a robust output. Your specifications regarding logging and rate-limiting embodies the value I attach to safety standards in building applications. Lastly, as part of my deliverable, I ensure to provide concise developer documentation that serves as a reference point for not just future contributors but also users or administrators navigating through the application. So, if you're looking for an experienced developer who blends high-qualitycoding standards and long-term maintainability like I have done throughout my career, then look no further than Amit Technologies.
₹90,000 INR in 45 days
4.0
4.0

Hey, I noticed your project, Claude Custom App Developer Needed and believe I can help. My work in Mobile App Development has prepared me well for this kind of project. Looking forward to hearing your thoughts.
₹12,500 INR in 7 days
4.0
4.0

Hi, I understand you're looking to build a custom application using Claude as the core engine. I'll focus on architecting a full-stack solution that securely calls Claude's API and handles prompt design, conversation state management, and system-prompt logic. First, I'll set up a secure environment with Docker, handling environment variables for Claude keys. Then, I'll implement user authentication, rate limiting, and logging to ensure the app is safe for real users. I've experience with similar projects, having built custom applications with API integrations and handled complex backend systems. I'm familiar with the required skills, including Laravel, Node.js, and REST API development. For this project, I'll deliver a polished custom application that showcases Claude's capabilities. I'll handle edge cases, such as system-prompt logic, and fine-tune the application for reliable outputs. If you'd like to share your design preferences for the application, it would be helpful to know the desired layout, color scheme, and any specific features you'd like to include. I'm confident in my ability to deliver a high-quality application that meets your requirements. I'd appreciate the opportunity to discuss this project further and provide a detailed plan for execution.
₹30,485 INR in 7 days
3.1
3.1

The important part of a Claude-powered product isn’t just connecting to the API — it’s designing the surrounding architecture so conversations remain fast, reliable, and maintainable once real users start interacting with it. Things like prompt orchestration, context management, rate limiting, logging, and deployment workflows usually determine whether the app feels production-ready or just like a prototype. I’d approach this with a clean modular backend architecture, likely using FastAPI or TypeScript/Node depending on the frontend direction, with structured conversation state handling, secure API isolation, Dockerized deployment, and observability built in from the beginning. I’d also pay attention to latency optimization and token management so response times stay consistent even on modest infrastructure. I’ve worked on AI-integrated workflows and backend-focused systems involving API orchestration, authentication, deployment pipelines, and developer-friendly project structure, including environments where maintainability and scalability mattered from day one. Happy to break the build into milestones covering architecture, Claude integration, auth/security, deployment, and production hardening if useful.
₹25,000 INR in 7 days
2.2
2.2

As the CEO of Solves Inn, I have a team of experienced software engineers who thrive on engineering products that solve real problems and scale businesses, just like your Claude Custom App. We specialize in full-stack development, AI automation, API integrations, and building custom business applications - all of which align perfectly with your project's requirements. With over 10 years of experience, our focus is on employing cutting-edge technologies to create clean, scalable, and high-performance systems. In regard to your project scope, choose any language and framework that suits you best as we are well-versed in various stacks such as TypeScript/Node, Python/FastAPI, and Go with Fiber. We don't just write code but engineer production-ready solutions; hence our profound understanding of user authentication, rate limiting, and logging will ensure your app's safety upon deployment. Moreover, we are adept at cloud infrastructures like AWS and Docker - optimal for deploying Claude-powered application. And just as you require concise developer documentation for future contributors to extend the codebase without guesswork - organizing and comprehensible documentation are part of our professional ethos. With Solves Inn at the helm of the project, you can be certain your app will be efficient, secure, easily deployed, and equipped with exceptional end-user experience. Rest assured we sell not merely code but impactful systems.
₹12,500 INR in 1 day
2.2
2.2

**Note:** The project description is truncated ("to tur..."), so this proposal focuses on the visible pain point: Claude selection + need for implementation expertise. The commitment-driving question in the closing helps uncover the full scope. --- Hi, I see you've chosen Claude as your core engine but need the hands-on expertise to turn it into a working application. I work directly with Claude's API using Python and the Anthropic SDK. My approach focuses on streaming responses for real-time user experience and structured outputs for predictable behavior from Claude. The foundation starts with mapping your application logic against Claude's context window and token economics—this determines where you cache, where you parallelize, and where you use simpler fallbacks. I build modular backends that separate Claude calls from your business logic, making it easy to iterate on prompts without touching the application layer. Within 24 hours of starting, I'll have a working prototype routing your core use case through Claude, showing you the actual latency, cost per request, and response quality for your specific scope. What's the primary user-facing problem Claude is solving in your app? Best regards, Val --- **Why this works:** - **Para 1:** Mirrors their actual situation (chose Claude, need implementation) with specific detail - **Para 2:** Concrete technical depth (SDK choice, streaming, structured outputs, token economics) shows Claude fluency - **Para 3:** Tangible 24-hour deliverable + commitment question that forces scope clarity (critical at $12.5k) - **Tone:** Confident and technical without jargon; no self-introduction, no fluff
₹12,500 INR in 7 days
1.8
1.8

At Dlite Info Tech, we specialize in transforming ideas into impactful applications, emphasizing polished designs, secure API integrations, and scalable deployments. As a seasoned full-stack developer, I fundamentally understand the technological requirements that you've outlined for this project. I have extensive experience in building custom applications and have worked with technologies across the board – from TypeScript/Node to Python/FastAPI to Go with Fiber. Rest assured that no matter the stack, my approach is always clean, idiomatic and heavily tested. Through my keen-eye for details and problem-solving approach, I am confident about delivering an end-to-end flow where user queries areprocessed by Claude's API and its response is returned under two seconds on a modest cloud instance – a critical acceptance criteria you've listed. Additionally, I take pride in my ability to provide clear documentation that will not only make your job easier but also help future contributors make enhancements without any guesswork. Let's join hands to turn your Claude idea into a production-ready masterpiece! Hiring me would ensure a consistent and reliable codebase that will surpass your expectations both in functionality and performance.
₹37,500 INR in 7 days
0.6
0.6

Hi, I am interested in this project. I can provide you with the Customized Claude Custom Application with all features needed for your project in a creative and professional manner. We have previously worked on various Personal blog projects, Games, Mobile Apps & Corporate websites and we can cater to all your requirements in an efficient manner. We can complete the project in 15-30 days and we have long-term experience of various cloud computing platforms (Microsoft Azure, Google Cloud Platform, Amazon Web Services, etc.) and IDEs (Microsoft Visual Studio, Android Studio, XCode). You can trust us with your project as we have previously worked on various AI app development projects and we can design and develop your application with the desired features in an elegant manner. Please share your details and connect with us so that we can collaborate and complete this project.
₹22,000 INR in 15 days
0.0
0.0

Hi, I’m a Full-Stack Developer with 7+ years of experience helping startups and businesses build modern, scalable, and user-friendly digital products. your project aligns well with my experience in AI-powered application development and API integrations. I can help build a production-ready full-stack application around Claude with secure API integration, prompt engineering, conversation state management, authentication, logging, and deployment-ready architecture. For scalability and maintainability, I’d recommend a TypeScript/Node.js or Python/FastAPI stack with Docker-based deployment, proper environment management, rate limiting, and structured logging from the start. I can also implement clean system-prompt workflows, optimize response handling, and ensure the project includes documentation, tests, and an organized codebase for future contributors. I’d approach this through milestones: architecture setup, Claude integration + prompt flow, auth/security layer, testing & optimization, and deployment/documentation. Looking forward to discussing the application goals and implementation details further.
₹12,500 INR in 7 days
0.0
0.0

As an experienced full-stack developer and creative technologist, I believe I have the skills needed to turn your Claude-based application idea into a reality. I have a strong technical foundation paired with my creative advantages that enable me to build not just functional but also visually engaging, intuitive, and scalable applications—the exact qualities you're seeking. My thorough approach ensures your product doesn't just meet the technical requirements, but delivers tangible results. My expertise extends to API integrations and custom feature development, perfect for handling your project's prompts and fine-tuning requirements. Additionally, I focalise on providing strong user authentication, rate limiting, and logging capabilities for optimal safety—a critical factor for any publicly accessible application. Moreover, my experience with Docker or similar technologies allows me to package everything for easy deployment. Flexibility is another strength I bring. While each stack has its own merits, I have confidence in my ability to excel in building your app across stacks like TypeScript/Node, Python/FastAPI or even Go with Fiber. My adaptability has been working best for my past employers and can be applied here as well. To provide you an accurate roadmap towards building-out this application – which is crucial; I'd like to schedule further discussion on your project goals and collaboration milestones.
₹25,000 INR in 7 days
0.0
0.0

Hello, Building a production-ready application on Claude's API — with proper prompt architecture, conversation state, auth, rate limiting, and clean deployment — is exactly the kind of full-stack integration work I do well. My recommended stack for this: Backend: Node.js + TypeScript + Express (clean, idiomatic, fast cold starts) Claude Integration: Anthropic SDK with structured system prompt logic and conversation history management Auth: JWT-based authentication with role handling Rate Limiting: Express middleware with per-user quota tracking Logging: Structured request/response logging for Claude usage and errors Deployment: Docker with environment variable handling for API keys, one-command build Architecture approach: - Claude calls abstracted into a service layer — easy to swap models or adjust prompts without touching routes - Conversation state managed server-side per session — reliable context without client-side exposure - Lint + tests passing from clean clone before delivery Deliverables include full source code, README covering Claude quota config, environment setup, and extension guide. Quality, security, and maintainability always come first — happy to align on final scope once we've discussed what your application actually does so I can design the prompt logic correctly. Quick question: is this a single-user tool, a multi-user SaaS, or something else — and what domain is the application focused on? Ready to build this.
₹20,000 INR in 7 days
0.0
0.0

I’m a great match for this task. Your need for a clean, professional, and seamless full-stack solution integrating Claude’s API with efficient prompt design and secure user authentication aligns perfectly with my approach to development. While I am new to freelancer, I have tons of experience and have done other projects off site involving API integrations, state management, and deployment using Docker. I’m comfortable with TypeScript/Node and Python/FastAPI, prioritizing clean, user-friendly, and automated systems. Could you share your preference between TypeScript and Python for this project’s stack? I would love to chat more about your project! Regards, Zaheer Diedericks
₹12,500 INR in 30 days
0.0
0.0

I’m based in South Africa and have experience working remotely with international clients, which has helped me develop excellent time management, adaptability, and clear communication. Your project demands a professional, user-friendly, and integrated full-stack solution that leverages Claude’s API with efficient prompt design and secure authentication. I understand the need for an automated, reliable system with concise documentation and a deployment-ready package, all while maintaining adaptability to your preferred tech stack. While I am new to freelancer, I have tons of experience and have done other projects off site involving API integration, secure user flows, and Dockerized deployments. I’m confident I can help you build a polished, high-converting system that supports your business goals. I’d love the opportunity to discuss your project further and see how I can contribute. Regards, Byron Walbrugh
₹13,000 INR in 14 days
0.0
0.0

Hello, We at Resonite Technologies are excited to apply for your Claude Custom Application Development project. We specialize in building production-ready AI applications integrated with LLM APIs (Claude/GPT) with a strong focus on performance, scalability, and clean architecture. We understand your goal is to build a fast, secure, full-stack Claude-powered application with proper authentication, prompt management, and deployment pipeline. Our approach: • Full-stack architecture using Node.js (TypeScript) or FastAPI (Python) • Secure Claude API integration with optimized request handling • Prompt engineering + system prompt design for consistent outputs • Conversation state management and context control • Authentication, rate limiting, and logging system • Optimized API flow targeting low latency (<2s response goal) • Docker-based deployment with environment isolation Security & performance: • Secure API key management (.env / vault-ready structure) • Token usage control and quota handling • Request logging and monitoring • Rate limiting per user/session • Clean modular architecture for scalability Deliverables: • Production-ready full source code • Docker setup + one-command deployment • Linting, testing, and structured codebase • Clear README (setup, Claude usage, scaling guide) • Developer documentation for future extensions Regards, Resonite Technologies
₹55,000 INR in 7 days
0.0
0.0

Bengaluru, India
Member since Mar 29, 2026
$750-1500 USD
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