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1. Fractional Full-Stack "Vibe" Engineer Focus: Transforming [login to view URL] output into scalable, production-ready code. Role Overview We are looking for a senior-level Full-Stack Developer comfortable working in a high-velocity environment where initial UI and logic are generated via Lovable.dev. Your job is not just to "write" code, but to audit, refactor, and harden AI-generated code to support 14,000 users and 1.2k concurrent audio/video streams. Key Responsibilities • Code Hardening: Take Lovable-generated React/TypeScript code and refactor for performance, specifically focusing on memoization and efficient state management (Zustand/Context) for media playback. • Supabase Architecture: Implement and manage Row Level Security (RLS) to ensure strict multi-tenant isolation. • Database Optimization: Write and optimize complex Postgres queries, ensuring proper indexing for high-concurrency scenarios. • Media Integration: Lead the integration of audio/video streaming via Supabase Storage using Signed URLs and heartbeat mechanisms. Technical Requirements • Expertise: React, TypeScript, and Tailwind CSS. • Supabase Pro: Deep experience with Postgres, RLS, and Edge Functions. • AI-Native Workflow: High proficiency in Prompt Engineering—you must know how to guide AI to produce clean, modular code. • Performance: Experience in reducing "N+1" query issues and frontend re-rendering lag. 2. Fractional DevOps & CI/CD Engineer Focus: Building the "Safety Net" and global delivery pipeline on Netlify. Role Overview As our CI/CD lead, you will build the infrastructure that allows our "vibe coding" team to deploy rapidly without breaking the experience for our 14,000 users. You will be responsible for the "Quality of Service" (QoS) and the automated testing pipeline. Key Responsibilities • Netlify Infrastructure: Configure Netlify High-Performance Edge, Edge Functions for tenant-based routing, and advanced caching strategies (SWR). • Automated QA: Implement and maintain a comprehensive regression suite using [login to view URL] to protect core "Golden Paths" like login and playback. • Load Testing: Execute and report on K6 load tests to simulate 1,200+ concurrent users, identifying bottlenecks in the Supabase/Netlify handshake. • Deployment Pipeline: Establish a CI/CD workflow that uses Netlify Deploy Previews for staging and rapid QA cycles. Technical Requirements • Infrastructure: Netlify (Enterprise features preferred), including Edge Functions and Firewall/Rate-limiting. • Testing: Mastery of K6 (load) and [login to view URL] (e2e/regression). • Database Operations: Experience with Supavisor or similar connection pooling tools for high-concurrency Postgres environments. • Monitoring: Experience setting up Sentry or LogSnag for real-time error tracking in production
N° de projet : 40256636
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85 freelances proposent en moyenne $53 USD/heure pour ce travail

Hi This is exactly the type of environment where AI generated code must be hardened before scale exposes its weaknesses. I specialize in refining React and Supabase stacks for high concurrency systems, particularly where state management and RLS architecture determine long term stability. For the Full Stack role, I will audit Lovable output, isolate unnecessary re renders, implement proper memoization patterns, and restructure Zustand or Context usage to prevent media playback lag. On the Supabase side, I design strict multi tenant RLS policies, optimize Postgres queries with proper indexing, and eliminate N plus 1 issues. For streaming, I can implement signed URL flows with heartbeat validation to protect session integrity at scale. For DevOps, I can structure Netlify Edge routing, configure caching strategies, establish CI CD with deploy previews, integrate K6 load testing, and implement monitoring with Sentry. The goal is measurable QoS under 1200 concurrent sessions without regression risk. Best, Justin
$50 USD en 40 jours
6,4
6,4

Hello! I am excited about the opportunity to support your project by refining and optimizing the Lovable.dev-generated code and enhancing your Supabase architecture. From your description, you require a senior full-stack engineer skilled in React, TypeScript, Tailwind CSS, and Supabase with a focus on performance improvements, code hardening, and multi-tenant security through Row Level Security. Additionally, you seek a DevOps/CI/CD expert to build a high-performance Netlify deployment pipeline with robust testing and monitoring capabilities. With deep experience in these technologies, I am confident in my ability to audit and refactor AI-generated code to handle high concurrency and media streaming efficiently. I am well-versed in optimizing Postgres queries, implementing edge functions, and designing automated QA and load testing workflows, ensuring your 14,000 users receive a seamless experience. My approach focuses on clean, modular coding practices alongside effective prompt engineering to maintain code quality while enabling rapid deployments via Netlify. I would love to discuss your goals further and share how I can contribute to your project’s success. Looking forward to collaborating with you!
$50 USD en 30 jours
5,9
5,9

hi, i have reviewed the details of your project. we are comfortable stepping into lovable generated react and typescript code and turning it into production ready architecture. we will refactor for performance, clean up state management for media playback, and remove n plus one query issues. on supabase, we will implement strict rls, optimize postgres with proper indexing, and structure it for high concurrency and multi tenant isolation. for devops, we will configure netlify edge routing, caching, deploy previews, and set up k6 load testing plus automated regression to protect core flows like login and playback. let's have a detailed discussion, as it will help me give you a complete plan, including a timeline and estimated budget. i will share my portfolio in the chat. mughiraa
$50 USD en 40 jours
4,7
4,7

Hi there, I’m Kristopher Kramer from McKinney, Texas. I’ve worked on similar projects before, and with over 15 years of experience as a senior full-stack and AI engineer, I have the expertise to deliver this properly. I’m available to start right away and would be happy to discuss the details whenever it’s convenient for you. I look forward to speaking with you. Best regards, Kristopher Kramer
$50 USD en 40 jours
4,9
4,9

Hi, I have 10+ years of experience in full stack engineering and DevOps, with deep expertise in React, TypeScript, Supabase, and high concurrency system design. I specialize in transforming AI generated prototypes into production ready architectures that support thousands of users with strict performance and isolation requirements. I have worked on similar multi tenant SaaS platforms with real time media delivery, hardened RLS policies, optimized Postgres queries, and scalable CI CD pipelines on Netlify. Let us schedule a short call where I can walk you through my portfolio of scalable SaaS systems and discuss how we structure both the application hardening and CI CD roadmap. Regards, Manoj
$51 USD en 40 jours
4,2
4,2

Hi there, Good afternoon I am Talha. I have read you project details i saw you need help with Cloud Computing, Database Management, Software Engineering, Backend Development, Netlify, DevOps, CI/CD, Software Development, API and Web Development I am excited to submit my proposal for your project, which focuses on a comprehensive project plan. To begin, we will thoroughly understand your project's objectives and requirements, ensuring alignment on scope and goals. We will provide a clear and realistic project timeline with manageable milestones to ensure timely completion 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
$50 USD en 32 jours
4,3
4,3

I have done this exact cleanup path - taking AI-generated React code and turning it into stable prod code with real concurrency load. Your Lovable + Supabase stack is familiar, especially RLS hardening, query tuning, and fixing re-render churn in media-heavy screens. I can start by auditing hot paths and schema/index issues, then ship focused fixes so you see perf gains fast. For 1.2k concurrent streams, I would tighten signed URL flow, heartbeat strategy, and caching boundaries first. If useful I can share a similar Supabase refactor I did recenlty and what we changed. - Usama
$65 USD en 65 jours
3,6
3,6

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in Cloud Computing, Software Development, Web Development, API, Backend Development, DevOps, Database Management, Software Engineering, Netlify, CI/CD and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$50 USD en 5 jours
6,4
6,4

Hi there, We understand you need senior fractional engineers to harden Lovable.dev-generated React/TypeScript code for 14k users and 1.2k concurrent streams, enforce Supabase RLS multi-tenancy, optimize Postgres performance, integrate signed media streaming, and build a Netlify-based CI/CD, load-tested, regression-protected delivery pipeline. SEO Global Team has shipped high-concurrency SaaS platforms using React, Zustand, Supabase (RLS, Edge Functions, indexing), signed URL media delivery, Netlify Edge deployments, K6 load testing, connection pooling, and automated QA pipelines with production-grade monitoring. We’ll refactor AI-generated code for render efficiency and state isolation, eliminate N+1 queries, enforce strict tenant RLS with indexed Postgres schemas, implement heartbeat-secured media access, configure Netlify Edge routing with caching and rate limits, establish CI/CD with deploy previews and regression suites, and validate stability via K6 load simulations with full observability. Is Supabase hosted or self-managed? Are streams delivered directly from Storage or via a CDN layer? Do you already have baseline load metrics to benchmark against? Looking forward to strengthening your stack. Best regards, SEO Global Team
$50 USD en 40 jours
1,0
1,0

Hi, I came across your project "Lovable/Supabase code refining x performance " and I'm confident I can help you with it. About Me: I'm a agency owner with over 8+ years of experience in API, Backend Development, Software Development, Web Development. , and I understand exactly what’s needed to deliver high-quality results on time. Why Choose Me? - ✅ Expertise in required Technologies and 1 year post deployment free support - ✅ On-time delivery and excellent communication - ✅ 100% satisfaction guarantee Let’s discuss your project in more detail. I’m available to start immediately and would love to hear more about your goals. Looking forward to working with you! Best regards, Deepak
$50 USD en 40 jours
0,0
0,0

Hello, I would like to grab this opportunity and will work till you get 100% satisfied with my work. I'm a 10+ years of experienced full stack AI developer on Cloud Computing, Software Development, Web Development, API, Backend Development, DevOps, Database Management, Software Engineering, Netlify, CI/CD Lets connect in chat so that We discuss further. Regards
$50 USD en 40 jours
0,0
0,0

This is serious scale engineering, not just frontend polishing. Supporting 14000 users and high concurrent media streams requires strong database design, clean state management and controlled deployments. I can help you stabilise and optimise this platform properly. I am a senior full stack developer with deep experience in React, TypeScript and Supabase. I have implemented Row Level Security, optimised Postgres queries with proper indexing and fixed N plus 1 query issues in high traffic apps. I also have experience refactoring AI generated code into modular, maintainable structure with better memoization and controlled state flow. On the DevOps side, I have worked with CI CD pipelines, load testing and production monitoring to ensure performance and stability. My rate is 60 USD per hour and I can work in a structured fractional model. One key question, are you currently facing database bottlenecks or frontend re render performance issues as the main pain point? Regards Verma
$50 USD en 40 jours
0,0
0,0

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