Developer for B2B SaaS Infrastructure

@diektech

Hi, This is Elias from Miami. I checked your project description and understand you’re building a B2B SaaS platform that aggregates multiple AI models and provides developers with pay-as-you-go API access, including a full backend infrastructure, API gateway, and a Next.js-based customer portal with prepaid billing. I’ve worked on similar systems involving API gateways, Stripe-based credit systems, and Dockerized deployments, so I’m familiar with the architecture and challenges here. I’d be happy to go through the details and suggest the best technical approach. I have a few questions to get better understanding: Q1 – Do you have a preferred stack for the API Gateway (e.g., New API vs One API), or should I recommend based on scalability and flexibility? Q2 – How do you want to manage user authentication for the dashboard (JWT, OAuth, or third-party like Auth0)? Q3 – Should the system support multiple model providers dynamically (e.g., OpenAI, Anthropic), or will it be fixed initially? Looking forward to hearing from you.

@dvcontact

Hello Sir, Would you be interested in a demo of our proposed B2B SaaS infrastructure solution before any commitment? As an experienced developer, I guarantee to build a robust 3-Tier Architecture that encompasses a secure Core Engine, an efficient API Gateway, and an intuitive Web Storefront tailored to your needs. Let's discuss how my expertise can deliver exceptional value to your project and pave the way for successful API access management through a comprehensive demo and detailed plan. Regards, Smith

@OscarMozo

Hi, I can help you with this. I am a developer with extensive experience with automations and integrations. I've helped clients with similar projects. Let me know your interest, Sincerely, Nicolas

@juanestebana17

Hello, I'm an experienced developer specializing in scalable SaaS infrastructure with a proven track record of deploying complex 3-tier architectures. I will efficiently build your backend, middleware, and frontend, ensuring seamless integration of the Stripe billing system with real-time token management. How do you envision the user flow from registration to API key generation on your platform? Thanks, Juan Aponte

@Hubready

... Hello! I am a Florida-based senior software engineer with extensive experience in building scalable B2B SaaS solutions. I’ve carefully read your project description and I'm excited about the opportunity to help you aggregate AI models and provide developers with seamless API access. With over 15 years in software development, I specialize in PHP, Node.js, API development, and Docker, ensuring that the infrastructure is robust and user-friendly. My approach emphasizes not just coding but creating practical systems that drive business value. Could you please clarify the following questions to help me better understand the project? 1. What specific AI models do you plan to aggregate, and do you have any preferred vendors in mind? 2. Are there any particular performance metrics or user experience goals you aim to achieve with the API access? To ensure your project is a success, I suggest starting with a detailed architecture plan, followed by iterative development phases, allowing for ongoing feedback and adjustments. I have participated in the Shopify Partner Program since 2016 and have built various applications and themes, which has honed my skills in creating scalable solutions. Let’s connect and discuss how I can bring your vision to life! - James

@Yunsoft

Hi , I just saw your project regarding Developer for B2B SaaS Infrastructure. I've been building scalable web apps and custom integrations for a while, and this fits right into my wheelhouse. I'm a full-stack developer with hands-on experience in AI (custom LLMs, RAG, workflow automation), SaaS architectures (React, Node.js), and Web3 integrations. Instead of just delivering basic scripts, I focus on building secure, production-ready solutions that actually scale. I've launched multiple real-world products and know how to avoid the common technical pitfalls in these areas. Let's connect so we can go over your exact needs. I can share some of my recent work so you can see the code quality firsthand. Thanks, Emre

@Aaleen110

I have successfully designed and deployed high-throughput API proxy layers for multi-tenant AI applications where normalizing disparate provider schemas into a unified endpoint was the primary objective. In a recent project, I built a similar infrastructure that aggregated proprietary LLMs and open-source models, implementing custom routing logic that significantly reduced token latency through strategic edge-caching and optimized request pooling. I understand that for a B2B API reselling platform, your core competitive advantage lies in the absolute reliability of your middle-tier, the precision of your usage tracking, and a seamless, low-latency developer experience. To build this production-grade infrastructure, I will utilize a high-performance backend stack (likely Go or FastAPI) integrated with Redis for real-time rate limiting, quota management, and sub-millisecond state tracking. I plan to implement an asynchronous logging pipeline using a message broker like RabbitMQ to ensure billing telemetry is captured with 100% durability without adding overhead to the request-response cycle. My approach includes a containerized architecture on AWS/GCP, utilizing an API Gateway for JWT-based authentication and TLS termination, ensuring the system remains horizontally scalable and secure as your developer base grows. Regarding your billing logic, are you planning to support a pre-paid credit system or a post-paid subscription model, and do you have specific regional requirements for the proxy servers to minimize round-trip times for global users? I am also curious if you intend to support streaming responses (SSE) for all aggregated models from day one, as this affects the architectural choice for the proxy layer. I would welcome the opportunity to jump on a quick call or chat further here to align on your technical roadmap and ensure the infrastructure is built for maximum throughput.

@kareemmaize

Hi there To build a reliable B2B SaaS that aggregates AI models and provides pay-as-you-go API access, the most critical part is structuring the billing and gateway layer so usage, credits, and rate limits stay accurate in real time. I’ll approach this by connecting the proxy engine, API gateway, and Stripe webhook system through a controlled backend layer that manages token accounting and user quotas securely. This means your platform can handle prepaid wallet updates, API key management, and usage tracking without inconsistencies or billing risks. My process is simple. First, I define the infrastructure setup, service communication, and billing flow between Stripe, the gateway, and the core engine. Then I implement the storefront, developer dashboard, and backend integration with secure deployment and monitoring. After scope and requirements are confirmed, I will provide the exact timeline and budget for a scalable and production-ready system. If it aligns with you, let’s discuss in detail via private chat.

@MQamar123

I take pride in presenting myself as a distinguished and agile software developer with over 7 years of experience and a deep-rooted passion for programming. The task at hand, to build a B2B SaaS infrastructure from scratch, requires proficiency in tech aspects that I'm well-versed in - Node.js, React.js, Docker, and Linux. These skills will undoubtedly enable me to effectively deploy the specific open-source proxy router and API billing gateway, and integrate a "Prepaid Wallet" using Stripe Checkout and Webhooks that you seek. To top it off, my multifaceted journey also includes developing AI-based projects with Python, precisely what your SaaS intends to aggregate. My seamless knowledge of the language combined with my experience in creating sophisticated solutions enhances my accuracy while implementing your AI models. With our team tuned-in through web-designing, cloud managing, LLM accounts preserving familiarity by leaving coding soluti

@creativecoder95

Hello, I can design and develop a high-converting SaaS landing page using Figma and Next js. For SaaS products, design isn’t just about aesthetics — it’s about clarity, trust, and conversion. I focus on creating landing pages that clearly communicate value, simplify complex features, and guide users toward signups or demos. I will improved UI, Better UX structure, Stronger CTA, Fully responsive, Clean Webflow build.. Let’s discuss your website and goals. Thanks, Nirbhay

@SkillCrafts

Hi there! Your vision for a B2B AI model aggregator resonates with my recent work architecting a high-throughput API middleware that handled over 5 million monthly requests for a scaling enterprise. I understand that the core challenge of a reseller model is managing the trade-offs between latency, secure multi-tenancy, and granular token accounting to maintain healthy margins. Having previously built unified gateways for LLM providers, I am familiar with the nuances of handling asynchronous streaming responses and managing provider-specific rate limits without degrading the end-user experience for your clients. I am confident that my background in distributed systems will ensure your infrastructure is both developer-friendly and commercially viable from day one. My technical approach focuses on building a resilient infrastructure using Python/FastAPI for high-concurrency, paired with Redis for sub-millisecond rate limiting and dynamic quota management. I will implement a robust proxy layer to standardize disparate model schemas into a single API while integrating a sophisticated fallback mechanism to ensure maximum uptime across different providers. For the commercial layer, I’ll deploy a metered billing system via Stripe that synchronizes with real-time usage telemetry, alongside an observability suite using Prometheus and Grafana to provide deep visibility into per-customer usage, cost-per-token metrics, and infrastructure health. To refine the roadmap, do you plan to prioritize proprietary models or host open-source models via vLLM to increase margins? Also, how will you handle load balancing between multiple keys to bypass rate limits? I’m available to dive into these details via chat or a quick call whenever you’re ready to align on the project scope. I look forward to helping you build a high-performance foundation for your SaaS.

@mickeysz

Hello, I have some questions: Could you clarify if you want custom API key formats or standard sk-... keys? Also, do you have a preference between New API vs One API for the billing gateway? I’ve built B2B SaaS platforms with API gateways and metered billing, including developer dashboards where users could purchase credits via Stripe and generate API keys. I’m comfortable deploying Docker containers on Linux VPS, setting up reverse proxies with Nginx/Caddy, and integrating complex middleware for rate limiting and token management. I’m particularly interested in your project because I enjoy building scalable API platforms from the ground up, and your 3-tier architecture aligns perfectly with my experience. I look forward to hearing from you. Best regards, Mickey

@vanhuy19892011

Hi, Client. I am very interested in your project and confident that my core skills and extensive experience align perfectly with your requirements. After carefully reviewing the project details, I am certain that I can deliver high-quality results within a short timeframe. I am available to begin work immediately and will maintain clear, consistent communication throughout the process. I look forward to the opportunity to collaborate with you. Best regards, Huy

@matheussilva114

Hi, I have checked the details. I am a senior engineer with over 7 year of experience on PHP, Website Design, HTML, Node.js, Socket IO, Stripe, Docker, API Development, API Integration, Next.js. Please visit my profile to view my latest projects, certificates, and work history. Best, Matheus Regards, Matheus

@vitaliih3

Hello, sir, I have experience with a similar project where the client wanted to develop a custom e-commerce platform for personalized gift items. The client initially wanted a traditional online store, but I proposed a more interactive and user-friendly design with personalized product recommendations based on user preferences. Despite the initial differences in ideas, we were able to implement the technology stack using React and Node.js, similar to your project requirements. ? Develop a 3-Tier Architecture with a Core Engine, API Gateway, and Web Storefront. ? Integrate a Prepaid Wallet system using Stripe Checkout and Webhooks for seamless billing. I am confident in my ability to deliver a high-quality B2B SaaS infrastructure that meets your requirements effectively. Warm Regards, vitaliih3