Backend for AI self-reflection application (Node.js, PostgreSQL, Firebase)

Hello, I have experience in implementing backend for various projects. I mainly work with Nest.js. I have relevant experience with voice and AI. I can start the work immediately after defining the scope. I will be happy to help you!

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Good day!
I can implement your project without any problems in a few weeks, and I can start as early as Monday. I would also like to see a more detailed technical specification and stack, then I could suggest alternative solutions for more stable and efficient operation. For example, using Fastify instead of Express due to lower resource consumption, faster request processing, and the ability to handle a larger number of requests simultaneously.

Examples of work:
Relevant projects:

https://rstays.com/
— complete backend from scratch (Node.js Fastify, roles, payment, AI, real-time chat, push, Firebase Auth, mobile + web, deployment, and more)

… https://ai-desk.ai/
— backend from scratch for an AI chatbot (Node.js, payment, roles, AI, mobile + web, deployment, and more)

https://seetruth.app/
— backend from scratch on Node.js Express for a mobile application

You can also find more projects in my freelance profile or on GitHub https://github.com/axbuglak/

Best regards,
Buglak Oleksiy

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Good day, the last task in the profile was closed with an AI voice agent, I am also developing with TTS, LLM, STT models, any pipelines are not a problem. I have experience in mobile application development (front + backend), NestJs, sqlite/postgresql/supabase.
The latest application is a Productivity app, (AI tools for creating notes, plans, notion type cards). I also created a voice AI assistant for a children's fairy tale application. I use Gemini for LLM, STT, and eventLabs for voiceover (faster response).

I also have extensive experience in data embedding. In your case, for example, it is possible to quickly and cheaply find notes in journals or other objects accurately by tokens.

I would like to see your scheme to understand the architecture more precisely.

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Hello!
I have been working on backends with Node.js for several years, mainly with NestJS, sometimes with Express, and I work with PostgreSQL through Prisma and TypeORM, as well as using Firebase. I also regularly integrate external APIs such as Gemini, OpenAI, voice services, CRM, and others.

Regarding relevant projects,
I created an AI manager for a medical business that had a backend with dialogue history, sessions, scenario logic, integrations with AI, and data storage in the database.
I developed a service for restaurants with a voice bot that takes calls, recognizes speech, responds with voice, and creates reservations.
I have also created several SaaS services and mobile backends with subscriptions, freemium/premium logic, limits, roles, and analytics.

For your project, I see a clear API architecture using NestJS, PostgreSQL, and Firebase for login and push notifications, a separate module or service for AI and voice. I can design everything from scratch, establish a proper structure, and implement a stable production backend.
… I can start immediately or within the next few days.

I would be happy to look at the Figma and the complete description of the logic, after which I will propose a specific work plan and implementation stages.

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I am among the top 5 developers in the category of "Artificial Intelligence and Machine Learning" among ~2100 specialists on the platform.
I guarantee:
- Fast and high-quality task execution
- Strict adherence to deadlines
- Regular communication throughout the entire process
I would be happy to discuss the details of your project in private messages.

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Hello.

I am a NodeJS developer. I am ready to take on the task. Write to me, we will discuss.

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Hello. I have been working with Node.js for over 8+ years. I also have extensive experience with Nest.js/Prisma. I am ready for collaboration.

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Hello! I am very interested in your project. For the voice, I suggest using Eventlabs. I have experience in backend development specifically on your stack (Node.js/NestJS) and I am ready to build a reliable architecture for your application.

I have experience integrating OpenAI/Gemini into commercial chatbots and analytics services. I have also connected animation and lip-syncing to bots https://217-154-170-186.nip.io/

I have developed subscription systems (Stripe/RevenueCat) and have experience working with Firebase (Auth, Analytics, Messaging).

I am ready to start working this week after discussing the details.

My GitHub: https://github.com/onyx144 (Nikita)
…
I can send the link to the applications in a private message.

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Hello, I am a Node, Nest.js developer, I have experience in creating backend architecture and API integration, I am familiar with the main tasks and technical stack, I can take on this project.

my GitHub: https://github.com/RuslanZotsenko22

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