Ruby on Rails Developer

Core AI Backend Engineer – LLM Fine-Tuning

You know that moment when you don’t just debug code — you train a model, fine-tune it, and suddenly it understands your domain better than you expected? That’s the kind of magic we’re looking for.

We’re building something that turns chaotic social video data into crystal-clear business intelligence. Not just another API — but AI-backed architecture fine-tuned to our world. Systems that marketing teams thank you for, because they feel the intelligence, not just the infrastructure.

Either you feel the craft when you read this, or you don’t. This isn’t just another backend role. This is where you bring together scalable systems and cutting-edge LLMs to build something the world hasn’t seen before.

Who We Are

We’re a small, global team that ships fast. Every line of code and every model choice affects millions of video analysis requests.

Our engineers don’t just build APIs — they architect solutions, they optimize at scale, and now, they fine-tune models to make AI work in the real world. Our CPTO still codes. Our senior engineers make complexity look effortless. Our backend team sets a standard that others ask how we move so fast.

What We Need

We need someone who’s lived both sides of this life:

• Backend excellence: building high-scale, high-performance systems.
• LLM fine-tuning: hands-on with open-source models, not just calling APIs.

Someone who can sit with a requirement at 2pm and by 6pm not only has endpoints working, but also has a fine-tuned model running behind them — customized to our use case.

Your Craft

• JavaScript/TypeScript & NodeJS as core backend tools.
• Next.js for full-stack where needed.
• Rust when performance is non-negotiable.
• Golang/Python as comfortable tools of choice.
• MySQL/Postgres/Redis — wielded with intention.
• AWS ecosystem — your playground, not your puzzle.
• LLM/AI integration you’ve actually shipped.
• Open-source LLM fine-tuning experience:
• Bringing in open-source models (LLaMA, Mistral, Falcon, etc.).
• Fine-tuning/adapting them for specific domains.
• Optimizing for inference cost, latency, and accuracy.

The Reality

The work is beautifully complex. The scale is real and growing. The problems are the kind that wake you up at 3am with solutions.

If you get your energy from building backend systems and adapting LLMs to make them smarter for real-world use, you’ll probably fall in love with what we do. If you’re only interested in APIs without touching models, this won’t be your thing — and that’s completely okay.

How to Apply

If you’re reading this thinking “finally, a team that actually cares about real AI engineering” — we’d love to see something you’ve built.

Not just a resume. Show us your craft:

• An LLM fine-tuning repo.
• A domain-adapted model you worked on.
• A system design where you combined backend and AI.
• Or even a short write-up or voice note explaining what you’ve fine-tuned.

We’re genuinely excited to see what you’ve done and have a meaningful conversation about whether this could be magic for both of us.

Responsibilities

• Ability to translate Wireframes and PSD Designs into functional web apps using HTML5, AngularJS, React , Node.js, and Mongo

• Binding of UI elements to JavaScript object models

• Creating RESTful services with Node.js

• Architect scalable web architectures

• Work in a cross-functional team to deliver a complete user experience

• Create Unit and Integration tests to ensure the quality of code

• Be responsive to change requests and feature requests

• Write code that is cross-platform and cross-device compatible

• Ability to wear many hats and learn new technologies quickly

What you need to have:

Job Description:-

• Php Developer Skills Required.
• Good working knowledge on Core PHP.
• Strong knowledge of MVC Framework and knowledge of Laravel.
• Good working knowledge of JavaScript & JS frameworks, preferably jQuery.
• Strong knowledge of MySQL databases & OOPS concepts.
• Strong knowledge of ORM and query builder.
• Knowledge of queue scheduling and task scheduling.
• Strong knowledge of Artisan commands.
• Hands on experience of service providers and create new service providers in the application when needed.
• Integration of user-facing elements developed by front-end developers.
• Build efficient, testable, and reusable modules.
• Solve complex performance problems and architectural challenges.
• Write well designed, testable, efficient code by using best software development practices.
• Integrate data from various back-end services and databases.
• Create and maintain software documentation.
• Knowledge of Rest APIs.
• Knowledge of the payment gateway integration (PayPal, PayUMoney, CC Avenue etc.)
• Good knowledge of wallet integration (Paytm, Phone-Pe, Amazon) etc.
• Proficient understanding of code versioning tools, such as Git is mandatory.
• Ability to debug the code and resolve the issues.

Key Responsibilities:-

• Build reusable code and libraries for future use.
• Participate in the full lifecycle of the projects.
• Optimize application for maximum speed and scalability.
• Ability to work independently and within a team environment.
• Assist in troubleshooting any production issues.
• Working within an existing code base and also writing code from scratch.
• Good team player -collaborate with other team members and stakeholders.
• Commitment to meet corporate goals and tight deadlines.

Key Skills:- HTML, CSS, Bootstrap, jQuery, JavaScript, PHP, Core PHP, knowledge of MVC framework, database, MySQL, Laravel Framework, Rest APIs, 3rd party tool integration, OOPs programing concept.

Experience:- 3+ Years’ experience.

Education Qualification:- B.E./B.Tech. /MCA or equivalent in computer science or a related field.

What you need to have:

Experience: 4 to 8 years

Annual CTC: Rupees 12,00,000 to 20,00,000

1. Develop and manage e-commerce websites, web applications & web sites.
2. Analyze, design, code, debug, test, document & deploy applications.
3. Participate in project & deployment planning.
4. Must be a self-starter & be able to work with minimum supervision
5. Exp. In modules/extensions development/customization.
6. Exp. In Theme integration/customization.
   
7. Exp. In API creation/integration.
   
8. Exp. In Migration from Magento1 to Magento2
9. Extensive experience of PHP and MySQL.
10. Exposure on Magento 2, CMS and JavaScript frameworks such as jQuery.
    
11. Demonstrable knowledge of XML, XHTML, CSS, Modules i.e. API integration,
12. Payment Gateways, XML with a focus on standards.
    
13. Demonstrable source control experience
    
14. Two or more published websites in E-Commerce