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We are looking for an experienced Full-Stack Developer with strong AI integration experience to fix, optimize, and complete an existing AI-focused SaaS platform. Project Scope Review and understand the current codebase Identify and fix existing bugs and performance issues Complete unfinished features Improve frontend and backend functionality Integrate and optimize AI/LLM features and workflows Ensure scalability, security, and production readiness Deploy and test the final solution Required Skills React / [login to view URL] Node.js / Python REST APIs and third-party integrations AI/LLM integrations (OpenAI, Anthropic, Gemini, etc.) Database management (PostgreSQL, MySQL, MongoDB) Cloud deployment (AWS, GCP, Azure, or Vercel) SaaS architecture and best practices Developer Requirements Proven experience building or maintaining AI-powered SaaS applications Strong debugging and problem-solving skills Ability to work with an existing codebase Good communication and regular progress updates Portfolio of relevant SaaS or AI projects preferred Deliverables Fully functional and stable AI SaaS platform Fixed bugs and completed pending features Clean, documented code Deployment support and testing To Apply Please include: Relevant AI SaaS projects you have worked on. Technologies you would use. Estimated timeline. Your availability to start immediately. Looking forward to working with a skilled developer who can quickly understand the project and deliver a high-quality solution.
Project ID: 40486798
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Hi. I’ve worked on AI SaaS platforms with [login to view URL], Node/Python backends, and LLM integrations (OpenAI, Anthropic), so I’m comfortable jumping into an existing codebase and stabilizing it quickly. I focus on debugging, performance, and making AI workflows reliable and scalable, not just functional. I can review your system, fix issues, complete features, and prepare it for production with clean documentation. Available to start immediately and can share relevant projects on request.
$100 USD in 7 days
1.5
1.5
153 freelancers are bidding on average $158 USD for this job

With extensive experience in Full-Stack development and AI integration, I can optimize and complete your AI-focused SaaS platform. I will review, fix bugs, and enhance frontend/backend functions, integrating AI/LLM features. My skills in React, Node.js, REST APIs, and AI integrations align perfectly with your needs. Could you share more about the current tech stack to ensure seamless integration? Regards, Yogesh Kumar
$170 USD in 9 days
7.5
7.5

Greetings, I appreciate the opportunity to apply for your project. You're looking for a skilled Full-Stack Developer to enhance and finalize your AI-focused SaaS platform, which involves fixing bugs, optimizing performance, and integrating AI features. My approach would start with a thorough review of the existing codebase to understand its structure and identify issues. With a solid background in React, Node.js, and AI integrations, I can effectively address the bugs and complete the unfinished features. I have experience with various databases and cloud services, ensuring that your platform is scalable and secure. Communication is key for me, and I’ll provide regular updates throughout the process. I look forward to the possibility of working together to deliver a high-quality solution. Best regards, Saba Ehsan
$100 USD in 3 days
5.3
5.3

Hi there, I understand that you're facing challenges with fixing and optimizing your existing AI-focused SaaS platform. My extensive experience in Python and AI integration allows me to quickly identify and resolve bugs while enhancing performance. I have successfully completed similar projects, ensuring scalability and production readiness. I have two quick questions to make sure we're on the same page: 1. What specific AI features are you looking to integrate or optimize? 2. Do you have a preferred cloud platform for deployment? Let's discuss your project now!
$250 USD in 10 days
5.0
5.0

As an accomplished Full-Stack Developer with expertise specifically in PHP, Laravel, React JS and more, I am confident that I have the skills and experience necessary to handle your project from start to finish. Not only have I successfully built SaaS platforms before, I have also integrated various AI/LLM technologies into these applications using Python. Having worked extensively on delivering robust backend systems and user-friendly frontends, I am well-suited to identify gaps in your existing codebase, fix bugs, optimize performance and complete those unfinished features. Drawing from my 6+ years of professional work with multiple organizations, including startups and established companies, I possess a deep understanding of web and mobile application development life cycles. This means that I can seamlessly adapt to your existing codebase and ensure its scalability and security while bringing it to product-ready quality. My penchant for clean and well-documented code will not only make future maintenance easier for you but will also expedite problem-solving throughout the project. With me as part of your team, you can expect regular progress updates and timely deliveries. Bearing in mind the scope of your project, I estimate a turnaround time of X months given my availability to start immediately. Let's collaborate on this project transforming your AI-focused SaaS.
$30 USD in 1 day
4.7
4.7

Hello, Is your existing codebase primarily in Node.js or Python? Do you have a preferred cloud provider among AWS, GCP, Azure, or Vercel for deployment? Exciting to enhance your AI SaaS platform! I'll thoroughly assess the codebase to streamline functionality and scalability. Identifying existing bugs is crucial, and I'll address them to ensure seamless AI/LLM integration. Let's discuss the timeline and project costs in a chat. Looking forward to collaborating and refining your platform together. Please feel free to message me anytime to chat further!
$30 USD in 1 day
4.8
4.8

Hi, Could you share the current codebase and any specific bugs you’ve encountered? I have extensive experience with AI-focused SaaS platforms, and I can ensure the optimization and completion of your project. With 5+ years in full-stack development, I am well-versed in React, Node.js, and Python, along with integrating AI/LLM features effectively. My previous projects include building scalable AI-driven applications that prioritize performance and security. I can review the existing code, fix issues, and implement unfinished features efficiently. I am available to start immediately and can provide regular updates throughout the project to keep you informed. Let’s discuss further how I can help bring this project to completion. Best Regards,
$100 USD in 3 days
4.7
4.7

The trickiest part here is usually inheriting someone else's AI integration layer — especially if the LLM calls aren't properly abstracted or error handling is brittle. I'd start by reviewing how you're managing context windows and streaming responses across OpenAI/Anthropic/Gemini, then refactor the API layer to make switching models cleaner. Built an AI travel planner with FastAPI and Claude that handles multi-step reasoning, and a full invoicing platform with 81-table PostgreSQL and Supabase RLS, so I'm comfortable jumping into existing backends and cleaning things up. Once I get repo access and can see your database schema and current AI setup, I can map out what needs fixing versus what's just incomplete. More at ffulb.com. Can start whenever works.
$124 USD in 7 days
4.5
4.5

Hi, I can step into your existing AI SaaS platform, stabilize the codebase, complete pending features and prepare it for production. Proof: You need someone who can take over an existing system, resolve bugs, optimize AI workflows and ship reliably; I have 7+ years of full stack development experience working on SaaS platforms, API integrations and automation systems. Approach: I’ll audit the architecture, prioritize critical issues, refine frontend and backend performance, optimize LLM integrations and deliver a secure, scalable production-ready platform. Question: What is the current stack, and do you already have a documented list of unfinished features and known bugs available for review? Best Regards, Fizza Nadeem K
$80 USD in 5 days
4.2
4.2

I can review your existing AI SaaS platform codebase, fix bugs, optimize performance, complete unfinished features, and enhance both frontend and backend functionality while improving AI/LLM integrations for a more stable and scalable system. Lets chat Best regards, Shawana
$140 USD in 7 days
3.5
3.5

Hi there, Ready to transform your AI-focused SaaS platform into a seamless and robust solution? With a solid background in full-stack development and AI integration, the project will be approached by first reviewing the existing codebase to identify areas for enhancement. Bugs and performance issues will be prioritized to ensure a smooth user experience. The focus will also be on completing unfinished features while optimizing both the frontend and backend functionalities for maximum efficiency. AI integrations will be refined to ensure they meet your operational goals, with a keen eye on scalability and security throughout the process. Once everything is in place, the final solution will be deployed and thoroughly tested to guarantee it’s production-ready. If you're interested in discussing this further, I'm always ready to talk.
$30 USD in 7 days
3.5
3.5

The biggest risk in AI SaaS projects is not adding new features but understanding the existing architecture, eliminating technical debt, and making AI workflows reliable in production. I understand you need someone who can quickly audit the current codebase, fix bugs, complete unfinished functionality, optimize AI integrations, and prepare the platform for stable scaling. My experience includes building AI-powered SaaS products, LLM applications, RAG systems, agent workflows, automation platforms, and production-ready full-stack applications. I focus on debugging first, documenting findings, prioritizing high-impact fixes, and then implementing scalable solutions that improve reliability, performance, and maintainability without unnecessary rewrites.
$2,500 USD in 25 days
3.1
3.1

Hi, I will enhance your AI-focused SaaS platform by addressing bugs, optimizing performance, and completing unfinished features. With extensive experience in React, Node.js, and AI integrations, I can ensure a seamless integration of LLM capabilities while improving both frontend and backend functionality. My previous work on AI-driven SaaS applications has equipped me with the skills needed to enhance scalability and security effectively. I’ll conduct a thorough review of your existing codebase to identify critical areas for improvement and ensure a smooth deployment process. My approach focuses on maintainability and clean documentation, so future updates are straightforward. To tailor my work, could you share more about any specific performance issues you’re currently facing? Additionally, what’s your timeline for deployment, and how frequently would you like updates throughout the process? I’m ready to start immediately and deliver a fully functional and stable platform that meets your expectations. Thank you.
$156 USD in 7 days
3.1
3.1

Hi, I've worked on several AI-focused SaaS platforms, including fixing bugs, optimizing performance, and integrating AI features. I can quickly review your current codebase, fix existing issues, and enhance both frontend and backend functionalities. Let's start with a small trial task to ensure alignment before diving into more comprehensive work. Looking forward to discussing how we can bring your platform to its full potential. Best Regards, Ivica
$140 USD in 7 days
3.3
3.3

Hi, I can easily DO your work IN 24 HOURS, DM me now to get started, PRICE NEGOTIABLE 100% Work satisfaction is provided
$40 USD in 1 day
3.1
3.1

Hola. me interesa tu proyecto ya he trabajado en algunos similares, si gustas podemos conversar para conocer mas detalles de tu proyecto
$140 USD in 7 days
3.4
3.4

I've worked on similar AI-powered SaaS platforms before and can help stabilize, optimize, and complete your existing product. This isn’t just about fixing bugs it’s about turning an unfinished AI SaaS platform into a reliable, scalable, and production-ready solution. The biggest challenge is understanding the current architecture quickly, resolving technical debt, and ensuring AI workflows perform consistently under real-world usage. I build and improve SaaS applications with a focus on performance, scalability, and maintainability. My experience includes working with existing codebases, integrating AI/LLM services, optimizing APIs, and delivering systems that are easier to support and extend. Q) Which AI providers and models are currently integrated, and are there any reliability or cost issues you're facing today? Q) Do you already have a prioritized list of bugs and unfinished features, or should the first phase include a full technical audit? The most important part of this project is establishing a clear roadmap after reviewing the codebase. Fixing issues without understanding the architecture often creates new problems, whereas a structured audit allows features, performance, security, and AI workflows to be improved efficiently. Let’s have a 10 minute discovery call. I can review the existing platform, identify the highest-impact improvements, and create a plan to get everything stable, scalable, and launch-ready. Best, Usama F
$80 USD in 7 days
2.5
2.5

Hello, I understand that you are facing challenges with your existing AI-focused SaaS platform, particularly in fixing bugs, improving performance, and integrating AI features. With over 12 years of experience in full-stack development and a strong focus on AI integrations, I am confident in my ability to enhance your platform effectively. I have previously worked on similar AI SaaS projects using technologies like React.js for the frontend and Node.js or Python for the backend. My experience with cloud deployment on AWS ensures that I can optimize scalability and security as part of the solution. Additionally, I am proficient in handling database management with PostgreSQL and integrating REST APIs seamlessly. For this project, I would estimate that the initial review and bug-fixing phase can be completed within two weeks, followed by feature integration. Could you please share more details about the specific AI functionalities you want to prioritize? Looking forward to collaborating with you!
$250 USD in 7 days
2.5
2.5

Hi, I can help with completing and stabilizing your existing AI SaaS platform so it’s production-ready with fixed bugs, finished features, and optimized LLM workflows. I’ll review the current codebase, map the AI/LLM flows end-to-end, and then deliver targeted fixes plus backend/API and frontend improvements in small checkpoints. To reduce risk, I’ll add logging, automated tests around critical endpoints, and a staging deploy with performance and security checks. js vs React, and Node vs Python), and which AI provider(s) are wired today (OpenAI/Anthropic/Gemini)? I’m available to start immediately—shall we schedule a quick walkthrough?
$59 USD in 3 days
1.4
1.4

Greetings, I see that you're looking for a Full-Stack Developer to help fix and complete your AI-focused SaaS platform. My approach would start with a thorough review of your current codebase to identify any existing bugs and performance issues. From there, I would focus on optimizing both frontend and backend functionalities, ensuring that the integration of AI features runs smoothly. With my experience in React, Node.js, and various AI integrations, I can help bring your project to life while ensuring scalability and security. I have a solid understanding of SaaS architecture, and I prioritize clean, documented code along with regular updates to keep you informed throughout the process. I'm excited about the opportunity to contribute to your project and deliver a high-quality solution. Best regards, Muhammad Usman Kamran
$150 USD in 3 days
1.5
1.5

Hello! I've built a similar AI-focused SaaS platform where I improved performance by over 30% through optimized backend workflows and seamless AI integration. I’d love to share the implementation details in chat. To approach your project, I would first dive into the existing codebase to identify critical bugs and performance bottlenecks. After that, I’d tackle the unfinished features and ensure scalability with a focus on secure cloud deployment. Quick question: What specific AI functionalities are you looking to enhance or integrate further? If you’re open, I can share insights from my previous build, and we can see if it aligns with your vision. Looking forward to your reply!
$140 USD in 7 days
1.4
1.4

Barranquilla, Colombia
Member since May 27, 2025
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