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PLEASE READ COMPLETELY PLEASE READ COMPLETELY PLEASE READ COMPLETELY Before applying, you must read the attached project document in full. I am hiring a senior-level full-stack engineer to build a private, self-hosted AI application builder similar to Lovable.dev. This system will be used internally by my family and selected helpers only. It allows approved users to prompt an AI to generate full web applications, with manual control over when (and if) a backend is connected. This is a serious architecture-driven project, not a quick prototype. ⸻ Critical Requirements (Read Carefully) • Backend must NOT auto-connect • Supabase connection happens only when the user explicitly clicks or commands it • Apps must run in a live browser preview using mock data by default • Role-based access control (admin / restricted users) • Secure API key proxy with per-user usage limits • Full code ownership with GitHub sync • AI must be backend-aware but not backend-dependent All technical details, architecture expectations, and constraints are defined in the attached document. ⸻ Who This Is For This role is for someone who: • Has built AI-assisted developer tools or internal platforms • Understands sandboxed execution, RBAC, and secure proxies • Thinks in systems and architecture, not shortcuts • Is comfortable extending open-source tools ([login to view URL], [login to view URL], etc.) If you don’t understand why the backend must be optional, this is not the right role. ⸻ How to Apply (Mandatory) To confirm you read and understand the attached document, your proposal must …… read the document and bid YOUR price I will confirm it
ID do Projeto: 40158994
81 propostas
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Ativo há 16 dias
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81 freelancers estão ofertando em média $503 USD for esse trabalho

Hello, HAVE HANDS-ON EXPERIENCE WITH SUCH PROJECT. I have 9+ years of proven experience in similar technology and confidently understand the requirement. The goal is to build a private, self-hosted AI app builder (Phase 1 mock preview + Phase 2 manual Supabase persistence) with strong RBAC and secure API key control, designed for scalable, user-centric workflows. -->> Private, admin-created user system with Family/Helper RBAC -->> Frontend-only sandbox mode with WebContainers/E2B and mock data -->> Manual backend connect + SQL migration generation for Supabase -->> GitHub-synced editable code with no lock-in -->> Secure API proxy + per-user usage limits Approach: clean architecture, secure APIs, efficient integrations, and agile delivery. Happy to chat in detail as I have some queries to ask regarding the project to proceed further.
$140 USD em 7 dias
6,6
6,6

Hello, I have read the requirements completely and understand this is a senior-level, private, self-hosted AI app builder with strict architectural controls. I can duplicate lovable by designing a two-phase system where Preview Mode runs fully frontend with mock data in a WebContainer/E2B sandbox, and Persistence Mode is manually triggered to inject Supabase logic and generate SQL migrations. The AI agent will be backend-aware but backend-agnostic by default, never auto-connecting to any database, with explicit user commands controlling all persistence. All generated code will remain fully visible, editable, Git-synced to a private GitHub repo, and protected from unwanted overwrites, following a clear blueprint architecture. API keys will be secured via a proxy with admin-level cost controls, RBAC will separate family and helper users, and authentication will use Supabase Auth or Clerk. I have 10+ years of experience in full-stack systems, AI agents, secure multi-user platforms, and developer tooling, and I prioritize correctness, control, and long-term maintainability over speed. I eagerly await your positive response. Thanks
$140 USD em 7 dias
6,1
6,1

Hi Marquis, I am a senior full-stack AI engineer with experience in building AI-assisted developer tools and internal platforms. I understand the importance of sandboxed execution, RBAC, and secure proxies in creating a secure and efficient system. I am ready to discuss the details of the project further. Please start the chat so we can delve into the specifics. Regards, Sai Bhaskar
$120 USD em 5 dias
5,3
5,3

With over X years of experience in software development and a focus on cutting-edge AI solutions, I am uniquely qualified to take on the role of Senior Full-Stack AI Engineer for your project. What really sets me apart is my understanding of the intricate balance between architecture and functionality - a crucial requirement for this venture. Having created multiple advanced internal platforms and AI-assisted tools, I'm well-acquainted with key aspects like sandboxed execution, role-based access control, secure proxies and extendability of open-source tools, which all align closely with your needs. Another aspect to note is my comprehensive knowledge about backend systems like PHP (Laravel, CI, CakePHP, Yii), Node.js and Python/Django intertwined with my command in frontend stack - HTML, CSS and daunting libraries like React.js, Angular.js among others - this duality empowers me to create ai-tools that are smart, backend-aware but not dependant. Moreover, I’ve diligently delivered projects across diverse domains from CRM and ERP systems to web-based POS and mobile apps amplifying my capacity to take on serious yet pragmatic endeavours. I deeply value code ownership is evident in my frequent use of GitHub sync. Thanks....
$250 USD em 7 dias
5,6
5,6

Hi Marquis H. I’m your web developer, ready to turn your project Senior Full-Stack AI Engineer into reality! I’d love to discuss the details and create something amazing together. Feel free to message me anytime, and we can also hop on a quick video or audio call whenever it's convenient for you. I’ve developed many projects exactly like what you’re looking for. If you want to see more relevant samples, just contact me through the chatbox, and I’ll share them instantly. ★ Why Clients Trust Me 500+ successful web projects delivered 430+ positive client reviews Expert in Machine Learning (ML), Software Development, Artificial Intelligence, Full Stack Development, AI (Artificial Intelligence) HW/SW, AI Consulting, AI Chatbot Development, AI Model Development, AI Model Integration, AI Development WordPress, Shopify, PHP, JavaScript, HTML, CSS, Plugin/Theme Development, Laravel, WebApp Clean, modern, responsive and SEO-optimized designs Fast delivery, great communication, and long-term support Available during EST hours for smooth collaboration If you want a professional developer who delivers quality work on time and stress-free, let’s connect. I’m excited to help build something amazing for you. Best regards, Kausar Parveen
$180 USD em 3 dias
4,8
4,8

Senior Full-Stack AI Engineer I’m a full-stack software engineer with expertise in React, Node.js, Python, and cloud architectures, delivering scalable web and mobile applications that are secure, performant, and visually refined. I also specialize in AI integrations, chatbots, and workflow automations using OpenAI, LangChain, Pinecone, n8n, and Zapier, helping businesses build intelligent, future-ready solutions. I focus on creating clean, maintainable code that bridges backend logic with elegant frontend experiences. I’d love to help bring your project to life with a solution that works beautifully and thinks smartly. To review my samples and achievements, please visit:https://www.freelancer.com/u/GameOfWords Let’s bring your vision to life—connect with me today, and I’ll deliver a solution that works flawlessly and exceeds expectations.
$140 USD em 7 dias
4,7
4,7

⭐Hi, I’m ready to assist you right away!⭐ I believe I’d be a great fit for your project since I have extensive experience in building AI-assisted developer tools and internal platforms, focusing on AI model integration and full-stack development. This project aligns perfectly with my technical expertise as I have a strong background in sandboxed execution, RBAC, and secure proxies, ensuring robust system architecture and functionality. The private, self-hosted AI application builder you envision will revolutionize how applications are generated, providing manual control over backend connections and role-based access for users. By implementing secure API key proxies and ensuring full code ownership with GitHub sync, I will create a reliable and efficient system. This solution addresses the critical need for AI-backed application development while maintaining control over backend connections, meeting the project's architecture-driven requirements. If you have any questions, would like to discuss the project in more detail, or would like to know how I can help, we can schedule a meeting. Thank you. Maxim
$50 USD em 6 dias
4,1
4,1

Hi there, I have reviewed your project titled Senior Full-Stack AI Engineer and I am a strong fit due to my experience building internal, architecture-first AI developer platforms with strict control boundaries. I have over 7 years of experience handling full-stack and AI systems, including sandboxed code execution, RBAC, secure API proxies, and AI-assisted app generation where backend connectivity is explicit and optional. I regularly work with TypeScript, React, Node or Python backends, secure key management, GitHub-based code ownership, and extending open-source AI tooling rather than reinventing primitives. I reduce client risk by enforcing clear separation between preview, mock data, and live backends, designing permissioned flows by default, and keeping all execution deterministic and auditable. I am available to start immediately. Regards Chirag
$100 USD em 7 dias
4,3
4,3

⚠️ If you’re not happy, you don’t pay ⚠️ Hello, I guarantee satisfaction based on my successful track record, not just years in the industry. For your private AI application builder project, I propose using React for the frontend, Node.js for backend connections, and Supabase for secure data handling. This approach ensures controlled connection initiation, avoids hidden state issues, and grants full code ownership synced with GitHub. In a recent project, I developed a similar system handling role-based access control and sandboxed execution, aligning with your requirements. My roadmap includes an in-depth audit, core development with AI integration, and thorough testing. Can we clarify how mock data will be managed in the live browser preview? Best regards, Piyush Gupta Senior Web Developer | Full-stack Expert
$150 USD em 2 dias
3,6
3,6

Dear Client, Greetings!! I have gone through the project description, and document and found that all of the mentioned requirements fall over my expertise, as I have hands-on experience on python, AI/ML, Data Science, software building, etc. I can duplicate lovable. I am a senior full stack AI engineer with hands on experience building private, self hosted AI code generation platforms with strict backend gating, RBAC, and live in browser sandboxes. I would approach this as a two phase blueprint driven system where preview mode is fully mock based and persistence is injected only by explicit user action, with full code ownership, GitHub sync, and manual override guaranteed. I have worked with WebContainers, Supabase, secure API proxies, and agent orchestration, and I prioritize architectural correctness and long term maintainability over shortcuts. Lets discuss further over a chat. Also, I have been coding on Machine Learning and Data Science with python from past 7 years. I have the experience of working with 4 giant tech companies, including freelancing on upwork, fiverr and freelancer. Hope to hear from you soon!!. Regards, Rojan
$180 USD em 7 dias
3,8
3,8

As an experienced full-stack developer with a specialty in AI, I have a deep understanding of the complexities and nuances involved in creating AI-assisted tools and internal platforms, making me the ideal fit for your project. Over the course of my successful 7+ year career, I have consistently delivered 80+ high-quality projects on time, giving me a strong command over time management - something essential in tackling detailed architectural projects like yours. The fact that I extend open-source tools gives me an added edge to create bespoke applications that align with your unique requirements. In terms of technical capabilities, I have strong expertise across the MEAN/MERN stack as well as Python and Machine Learning - all integral to the success of your project. Additionally, I have worked extensively with backend development and sandboxed execution ensuring smooth operations while adhering to your critical need of not auto-connecting to backend until explicitly instructed. My proficiency in secure API key proxy with per-user usage limits and GitHub sync guarantees you utmost safety and control. Lastly, what really sets me apart is my innate capability to think in systems and architecture rather than seeking shortcuts. This mindset will significantly contribute to the successful establishment of your private AI application builder - keeping it reliant yet independent on backend functionalities. Thanks...
$250 USD em 7 dias
3,8
3,8

Hello there, I have thoroughly reviewed the project requirements for the Senior Full-Stack AI Engineer position to develop a private, self-hosted AI application builder akin to Lovable.dev. I understand the critical need for manual control over backend connections and the importance of role-based access control. Proposed Solution: I propose to meticulously design and develop the AI application builder system with a focus on meeting all critical requirements, including secure API key proxy, role-based access control, and GitHub sync for full code ownership. The system will prioritize user control over backend connections and provide a live browser preview using mock data by default. Key Deliverables: - Development of a private, self-hosted AI application builder - Implementation of role-based access control and secure API key proxy - Integration of GitHub sync for full code ownership Portfolio & Skills: I bring expertise in AI Chatbot Development, AI Model Integration, Software Development, AI Development, and Full Stack Development to ensure the successful execution of this project. I will share my portfolio with you in the DM. Call to Action: I’d love to connect for a quick chat to discuss your project in more detail. Best regards, Bilal
$140 USD em 7 dias
3,6
3,6

Hello, With my extensive experience in Data Engineering, Analytics, Automation, Machine Learning and Web Development, I'm more than prepared to take on the role of your Senior Full-Stack AI Engineer. Having generated countless insights from raw data and built scalable data pipelines, I am highly skilled in creating systems that cater perfectly to specific business needs. My proficiency with tools such as Airflow, Spark and Kafka will prove useful when dealing with complex backend connections in your project. Central to my pitch is my ability to think systemically rather than seeking shortcuts. Understanding both the technical and practical threads that need to come together, I would approach your project holistically, not only ensuring that all your critical requirements are met - from secure API proxies to role-based access control - but also deep-diving into seamlessly integrating the AI-assisted parts of your system without compromising any function. My AI familiarity includes working with TensorFlow and Python - pairing well with your requirement for a backend-aware AI capability. Overall, what sets me apart is my aptitude in developing reliable real-world solutions that not only meet complex needs but exceed them. As an additional benefit, you'll receive unwavering commitment to your project combined with impeccable work ethic and a friendly demeanor. With me at the helm of your AI project's development, you can be assured of Thanks!
$250 USD em 5 dias
3,3
3,3

Hello, I fully understand that you’re seeking a senior-level full-stack engineer to create a robust, private AI application builder tailored for internal use. This is an exciting challenge that aligns perfectly with my expertise in developing architecture-driven tools. In my previous role, I designed an AI-driven internal platform enabling users to develop applications with full manual control over backend connections. This project emphasized secure API practices and strategic role-based access control, leading to notable efficiency improvements. ✅My Plan: - Conduct a thorough review of your project's specifications to ensure alignment. - Design a flexible architecture where backend connections are user-initiated. - Implement RBAC for seamless user management and secure API key provisioning. - Create a live preview environment using mock data for immediate feedback. - Ensure full code ownership with regular GitHub sync for transparency. Could you clarify the timeline you have in mind for the initial phases? Additionally, what specific features are you envisioning for the user interface? Best regards, Hongqiang Chen
$230 USD em 2 dias
3,3
3,3

Hi there,Good morning I am Talha. I have read you project details i saw you need help with Artificial Intelligence, AI Model Integration, Software Development, AI Model Development, AI Development, Full Stack Development, AI Consulting, Machine Learning (ML), AI Chatbot Development and AI (Artificial Intelligence) HW/SW I am pleased to present my proposal, highlighting our extensive experience and proven track record in delivering exceptional results. Our portfolio of success will showcase past projects that demonstrate our ability to meet and exceed client expectations. Glowing testimonials from satisfied clients will attest to our professionalism, dedication, and the quality of our work Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan
$30 USD em 14 dias
3,2
3,2

Hello, I’m Rahul Singh from Team Velora, and Team Velora has been running for 3 years with expertise in building secure, architecture-driven AI platforms and internal developer tools. We understand your requirement to build a private, self-hosted AI application builder with optional backend connections, role-based access, secure API proxies, GitHub sync, and live browser previews. Please come to the chat box so we can confirm scope, review architecture details, and proceed.
$140 USD em 2 dias
3,4
3,4

⭐ If you award me, your smile shows up ⭐ Hi , Your project immediately stood out to me—it closely matches work I’ve completed successfully in the recent past. The core challenges, structure, and technical requirements are very familiar, with only a few unique elements that align perfectly with my expertise. This is great news for you: it allows me to skip the usual ramp-up time, avoid trial-and-error, and deliver clean, high-quality results quickly and confidently. I bring hands-on experience with AI (Artificial Intelligence) HW/SW, AI Development, Full Stack Development, Artificial Intelligence, Machine Learning (ML), AI Model Integration, AI Consulting, Software Development, AI Model Development and AI Chatbot Development, along with proven workflows and best practices refined through multiple similar projects. You can view a directly relevant example in my portfolio here: https://www.freelancer.com/u/thomasb726 I’d be happy to discuss your specific goals in more detail and share tailored ideas based on what has worked best in comparable scenarios. Why clients choose—and continue working with—me: • Clear, proactive communication so you always know where the project stands • Strong respect for your deadlines, budget, and business reputation • Responsive, approachable, and focused on a smooth, stress-free process • Reliable post-delivery support that often leads to long-term partnerships If you’re looking for precise execution, high-quality results, and a dependable lo
$150 USD em 1 dia
3,0
3,0

Hey there, In the attached document, the backend is explicitly optional by default. Do you want the AI to reason about backend schemas and endpoints hypothetically before connection, or only after a user explicitly enables Supabase? Also, should GitHub sync be one repo per generated app, or a mono-repo with per-app folders and permissions? I understand this is not a prototype but a private, self-hosted AI app builder where safety, control, and ownership come first. I’m aligned with the core constraint: apps run in-browser with mock data, and backend wiring only happens when a user explicitly commands it. That separation avoids accidental data writes and keeps generation deterministic and auditable. I would design this with a clear service boundary: • sandboxed preview runtime • secure API key proxy with per-user limits • RBAC enforced server-side only • AI orchestration layer that is backend-aware but never auto-connected • explicit “connect backend” action that unlocks Supabase adapters • GitHub sync owned by you, not the AI I’m comfortable extending and hardening open-source bases like Bolt-style tools, focusing on correctness, security, and long-term maintainability. I’ve read the document and I will bid my own price after scope confirmation. Hope to discuss more on chat. Best, Kost
$250 USD em 7 dias
2,8
2,8

Hi, I’ve read your project and understand you need a private, self-hosted AI app builder with strict controls and architecture discipline. This is a serious, long-term tool for family use, with live browser previews, manual backend connection, and per-user API key proxies. I’ve built AI-assisted developer tools and internal platforms; I know how to balance security, scalability, and flexibility. How I’ll deliver: - RBAC with admin and restricted users, with audit trails. - Secure per-user API key proxy with per-user usage caps. - Backend is not auto-connected; connection happens only on user command. - Live browser preview using mock data by default; real data only when enabled. - Full code ownership with GitHub sync; AI that’s backend-aware but not backend-dependent. Availability: I can start now; a robust baseline in 3–4 weeks with iterative milestones. Do you want me to start with RBAC and mock data first, or tackle the secure API key proxy and backend-optional flow first? Thanks,
$300 USD em 3 dias
2,5
2,5

Hey there, When backend connection is triggered manually, do you want the AI to generate a migration-ready backend spec first (schema, policies, endpoints) and only bind it to Supabase after explicit approval, or should it hot-swap the live app from mock adapters to real services in one step? For sandboxed execution, are you expecting browser-only isolation (iframe + CSP + mocked fetch) or a server-side runner as well, with per-user quotas enforced at the proxy layer? I’ve built internal AI-assisted platforms where the hardest part is not generation, but control: keeping the AI backend-aware without letting it couple to infrastructure by default. The clean approach is a layered system: mock-first adapters for data access, a secure API key proxy with per-user limits, and a deliberate “bind backend” action that swaps adapters and applies RBAC and policies. That preserves live preview with mock data, prevents accidental writes, and keeps ownership clean when syncing to GitHub. I’m comfortable extending open-source builders and hardening them: sandboxed previews, role-based access, signed actions for backend binding, and a rate-limited proxy so no keys ever touch the client. The result is a serious internal tool where nothing connects unless a human explicitly allows it. Looking forward to discussing more on chat. Best, Kirill
$4.000 USD em 50 dias
2,4
2,4

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