Long-Term Backend Developer for KarobarAI

@OutsourceMan

Hello Valuable Client, CnEL India can take responsibility for auditing, stabilizing and maintaining KarobarAI as a long-term technical partner. Since the platform is already live, our priority would be to understand the existing architecture before making changes. **Our Methodology:** 1. **Codebase & Infrastructure Audit** – Review Node.js/Express, frontend, database, Docker, GitHub, AWS/EC2 setup, logs and deployment workflow. 2. **Issue & Risk Analysis** – Trace existing bugs, production errors, credit/subscription issues, API inefficiencies and integration risks. 3. **AI & API Audit** – Review Gemini/Google API usage, duplicate requests, failures, quotas and optimization opportunities. 4. **Critical Fixes First** – Resolve high-impact production issues, payment/credit problems and stability risks before lower-priority improvements. 5. **Testing & Deployment** – Test fixes thoroughly in a controlled environment before production deployment with rollback considerations. 6. **Documentation** – Document architecture, deployment, integrations, recurring issues and maintenance procedures. 7. **Ongoing Maintenance** – Provide continuous monitoring, bug fixing, API/infrastructure maintenance and feature support with clear communication. We can discuss the initial audit scope and monthly maintenance model after reviewing the repository and infrastructure. **Regards, CnEL India Team**

@mak94pk

I will start by performing a comprehensive audit of your codebase, focusing on the credit and subscription modules, and identify all critical bugs and technical risks. I’ll then fix the most urgent issues, document the changes, and set up automated monitoring for API usage and server logs. Delivery of the audit report and critical fixes will be within 7 days. I have built a similar Node.js/Express e‑commerce platform with PostgreSQL, ensuring robust payment and credit flows. Could you confirm that I have access to the GitHub repo, AWS credentials, and Docker environment?

@SBITServices

Hi, I have over 5+ years of experience in both frontend and backend development. I will do the specified tasks. Key Areas of Expertise: a) Full-Stack Development: Proficient in both frontend and backend technologies Frontend: Next, Js, ReactJS, Bootstrap, JavaScript, jQuery Backend: Laravel, CodeIgniter, Node.js b) API Integration: Experienced in integrating and working with APIs to enhance application functionality. c) Microservices: Skilled in developing and integrating microservices for scalable and efficient solutions. d) Database Management: Competent in managing databases with Postgresql, MySQL, MongoDB, and Oracle. d) Server Handling: Adept at handling server environments such as AWS, Google Cloud, VPS, Apache, and Nginx. Lets connect in chat so that We discuss further. With Regards, Sai

@onkarkulkarni8

Hi, I can help you with "Long-Term Backend Developer for KarobarAI" as per your given project description. We can discuss more in detail during a chat conversation when you are available. I've worked on many PHP projects in recent times. So I am confident on achieving your expected Goals. Please initiate a communication thread to discuss further and start with the project. ⭐ 5.0/5 from a recent client: "A more professional version: “Excellent work! The job was completed within the committed timeline. Great quality, professionalism, and timely delivery. Highly appreciated and recommended.”" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.

@avinashjain09

Hello, I am a full stack developer with 8 years of experience, was this platform developed using AI or from custom coding. I have the skills and experience to handle the work that you require. I am available to start the work immediately, can we have more discussion. Regards Avinash

@Hrolgar

There's a call to make before touching the credit and subscription code: audit the whole flow first and risk finding more than budgeted, or patch the bugs already known and leave the duplicate Gemini calls quietly burning credits underneath. I'd rather audit first, since a billing-adjacent system is exactly the kind of code where a fast patch on top of an unmapped bug costs more later than the audit would have. Credit ledgers and subscription state machines tend to fail the same handful of ways: a webhook firing twice, a race between a renewal and a manual credit grant, a status check trusting a cached value over the source of truth. I'd trace every path that debits or credits a balance and every place a subscription status gets read, then map where the Gemini/Google calls fire from more than one code path, usually a caching or idempotency gap rather than a design flaw. M1: Audit of the credit ledger, subscription state machine, and API call paths, with a written list of bugs and duplicate-call sources, ₹10519, 3 days. M2: Fix the credit and subscription bugs from M1, dedupe the Gemini/Google calls, ₹12000, 5 days. M3: Regression pass across both systems, logging so duplicate calls surface immediately if they recur, handover notes for ongoing maintenance, ₹9356, 4 days. Send me repo access and I'll have a tighter estimate on the audit scope by tomorrow.

@technologiesit

With over 8 years of consistent backend/full-stack development experience, including working extensively with SaaS applications and the essential technologies you listed, I'm confident that I'm a great fit for your long-term project. I've successfully taken over and maintained various existing SaaS projects in my career - understanding the codebase, identifying bugs, improving architecture, and ensuring stability - all aligning perfectly with your requirements. I understand the importance of maintaining the platform's stability for your paying customers while you focus on sales and business growth. My knowledge of Node.js/Express.js, AWS/EC2, Docker, Databases along with Google/Gemini API integrations will be invaluable in helping me accomplish this task efficiently. My flexibility to operate on different aspects like frontend/backend, infrastructure maintenance, bug fixing will ensure streamlined operations for your KarobarAI platform. My previous clients have consistently loved my clean code writing style, smart architecture and - most importantly – how my digital solutions really drove results for them. I look forward to discussing further how my skills in both AI-powered automation and web development can take your platform to new heights while keeping it even sturdier than it currently stands. Let's hop on a call soon!

@jinufeb14

I'm JINU, a seasoned and top-ranked software engineer equipped with years of backend and full-stack experience - exactly what's needed to tackle and optimize KarobarAI. I believe technology shouldn't just meet expectations but exceed them, which is why I always strive for efficiency and reliability with every project I touch. My specialties include Node.js, PHP, Software Architecture, and Website Design - a perfect match for the tech stack you're dealing with. In terms of responsibilities, I've not only built applications from scratch but also taken over and managed existing SaaS projects. With this valuable experience, auditing your existing codebase wouldn't pose a challenge for me. Rather, it provides an opportunity to leverage my deep debugging skills and knack for identifying potential risks.

@jiyayadav

I’m Sanjay Kumar, a full-stack developer experienced in API integration, Node.js, PHP, and website design. I understand that maintaining a sophisticated SaaS platform like KarobarAI requires more than just coding skills. It demands an analytical mindset that not only debugs the code but also ensures it is scalable for your business plans. Having developed similar SaaS applications and worked on AWS and Gemini integrations, I'm confident in my ability to dive into complex codebases like yours and deliver steady improvements. My proficiency in managing databases, Docker deployment, and GitHub repositories will ensure your KarobarAI's backend runs flawlessly. I’ve audited and managed existing SaaS projects before, so I know the importance of conducting a meticulous technical audit initially to identify all critical issues, followed by regular maintenance to ensure long-term stability - exactly what you're in need of! As per pricing, my rates are industry-competitive and tailored to the value you receive.

@shayankhan333

Credit and subscription bugs on a live SaaS usually trace back to non-idempotent API calls, the same Gemini request billed twice because retries aren't guarded. I'll start with an audit of the Node/Express codebase, EC2 and Docker setup, then deliver a written report of critical risks before touching production. Ongoing, I'll own bug fixes, log monitoring and safe deploys so you can focus on sales. Past SaaS and API work here: https://www.freelancer.com/u/shayankhan333 1) Which database, Postgres or Mongo? 2) Is credit deduction happening before or after the Gemini response? Message me and we can lock the plan down. Shayan

@Tacticssoft

Hi, I’m an experienced Full-Stack/Backend Developer with 9+ years of professional experience building and maintaining SaaS platforms. I can take ownership of KarobarAI’s existing codebase, audit the architecture, identify risks, and resolve production issues without unnecessary rewrites. I’m comfortable with Node.js/Express, databases, Docker, AWS/EC2, GitHub, REST APIs, Google APIs, Gemini and AI integrations. I have experience debugging subscription, credit, authentication, API-usage and database-related issues in production applications. I’ll begin with a complete technical audit and provide a clear report covering bugs, security, performance and technical risks. After the audit, I’ll prioritize and fix critical issues, thoroughly test changes, and deploy safely through your existing workflow. I can also monitor logs, server health, API usage and integrations to prevent recurring production problems. For ongoing maintenance, I’m available full-time and can respond quickly when critical customer-facing issues occur. I’m interested in a long-term partnership and can provide consistent communication, documentation and reliable technical ownership. I’m ready to review the repository and infrastructure and can discuss the initial audit and monthly maintenance pricing based on the codebase.

@santoshkumars17

Drawing on over half a decade of experience as both a frontend and backend developer, I bring the vital skills necessary for not just building applications, but maintaining them in the long term with quality and efficiency. My extensive knowledge of Node.js, PHP and website design has made me adept at handling databases, API integration and performance optimization—the very areas your project requires attention to. In working with you, my immediate goal will be to complete an audit of KarobarAI's project so I can fully understand the current architecture and identify any underlying bugs for your inspection. The critical issues will be resolved immediately, as we forge ahead with documenting the entire process for future reference. Given our plans to work together in the long-term capacity, I will remain dedicated to continually improving the application so that it remains stable as you scale. Finally, I should note that my clients routinely commend my communicative style; expect regular updates from me regarding any development impacting the platform and prompt responses in case of critical production bugs. My going price for auditing your system is X while my monthly maintenance cost is Y. Looking forward to forming a long-term partnership for KarobarAI's growth and success!

@rajikshaikh1

Hi, I’m interested in taking long-term responsibility for KarobarAI. I have 4+ years of backend/full-stack experience with SaaS platforms, Node.js/Express, APIs, databases, AWS/EC2, Docker, GitHub, subscriptions, credit systems, and AI integrations. I can audit your existing codebase, identify bugs and technical risks, review the credit/subscription system and Gemini/Google API usage, fix critical production issues, and document the system properly. **Answers:** * Experience: 8+ years * Existing SaaS management: Yes * Code audits: Yes * Initial audit: $150–$250 * Monthly maintenance: $500–$1,000 * Critical bugs: Response within 1–2 hours I’m looking for a long-term role where I can fully understand and maintain the platform rather than simply build individual features. I’d be happy to start with the technical audit.

@erdavinder2307

Hi, Paying customers on an unstable platform means the order of work matters more than the work itself, so here is how I would sequence it. First week is diagnosis, not fixes. I would put error tracking and structured logging in front of everything, so we stop guessing which failures actually affect users and start ranking by frequency. Fixing bugs in the order they were reported is usually the wrong order. The credit system is where I would look first regardless. Credit bugs are the ones that cost you customers and refunds, and they are almost always caused by mutable balance columns. The fix is a ledger — every grant, spend and adjustment as an immutable row, balance derived and cached. That makes every dispute answerable and lets you correct balances without corrupting history. Duplicate Gemini calls are usually missing idempotency and retries firing on timeouts that actually succeeded. Request-level caching plus idempotency keys typically cuts spend noticeably. I run Azure and AWS deployments daily, and Solidev Books is a workflow-driven financial platform on React and Python where exactly this ledger discipline applies. Questions 1. Do you have error tracking today, or are we starting from server logs? 2. Where do most customer complaints land — credits, or AI output? ₹25,000/month, 30 days, 25% first milestone. — Davinder

@Rahulsingh5xz

Hello. I'm Rahul Singh from Team Velora. We have 5 years of experience and a team of Node.js, AWS, Docker, and SaaS experts who can audit your existing KarobarAI codebase, fix backend/frontend bugs, optimize the credit and subscription system, review Gemini and Google API usage, and provide long-term technical maintenance with quick production issue support. Come in the chat box regarding the project.

@webeedream

Hi, I’d be interested in taking over the technical side of KarobarAI. I have experience with Node.js, Express, SaaS applications, AWS/EC2, Docker, databases, Google APIs, AI integrations, subscriptions and production debugging. I’m comfortable taking over an existing codebase, understanding the current setup, finding the actual root cause of bugs, and handling ongoing maintenance. For KarobarAI, I can start with a complete code audit, identify the critical issues around credits, subscriptions, API usage, Google integrations, database and AWS setup, and then fix them. I’m looking for a long-term engagement rather than a one-time project, so I’d be happy to take responsibility for keeping the platform stable as it grows. Regards, Pooja Singh

@mengw3

I've spent 20+ years in backend engineering, including taking live SaaS products that are throwing frequent bugs and making them stable, so being your long-term backend developer on an AI platform that is already live is exactly my kind of role. A live product with frequent bugs usually is not a mystery once you can see it: the real work is getting visibility into what is actually failing, fixing the recurring ones at the root, and hardening the paths that keep breaking. What I'd do: - Triage the current bugs, reproduce them, and fix the highest-impact ones first. - Add logging and error tracking so failures are visible instead of guessed at. - Harden the fragile endpoints and data flows so the same issues stop recurring. - Stay on as ongoing support with quick turnaround on new issues and features. You get a backend that stops surprising you, and a developer who sticks around to keep it that way. One thing to confirm: what stack is KarobarAI built on, and where do most of the current bugs show up? I can start right away.

@nikkibraiam

Hi, I'm a Software Architect with 11+ years building production SaaS and backend systems at scale (microservices, API architecture, database optimization, DevOps). I understand the real challenge here: KarobarAI is live but unstable—you need someone who can dive into your codebase, identify & fix the bugs fast, and make it reliable enough to scale. This isn't rebuilding; it's stabilizing what you've built. What I'll deliver: ✓ Root cause analysis + bug fixes (prioritized by impact) ✓ Performance optimization (faster response times, fewer crashes) ✓ Code review & technical debt documentation ✓ Deployment & monitoring setup ✓ Handoff documentation for future support I've built production SaaS platforms. I work fast (7 days), I understand existing codebases immediately, and I deliver exactly what you need—nothing more, nothing less. Let's get KarobarAI rock solid.

@souravsasmal14

Hi, I’m an experienced Node.js/Full-Stack developer with strong expertise in SaaS, AWS/EC2, Docker, MySQL, Google/Gemini APIs, and production debugging. I can audit your existing KarobarAI codebase, identify critical issues, fix credit/subscription/API problems, and ensure stable deployments without disrupting customers. I’m looking for a long-term partnership, with quick response to production issues—happy to start with a technical audit and provide a clear report/action plan.