Back End Architect

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.

Job Summary: We are looking for a proficient PHP Full Stack Developer specializing in Laravel to join our team. The ideal candidate should possess in-depth knowledge and hands-oJob Summary:

We are looking for a proficient PHP Full Stack Developer specializing in Laravel to join our team. The ideal candidate should possess in-depth knowledge and hands-on experience in Laravel framework development, along with proficiency in front-end technologies. You will be responsible for building and maintaining robust web applications, ensuring high performance, and contributing to the entire software development lifecycle.

Responsibilities:

Develop, implement, and maintain scalable web applications using PHP with a focus on Laravel framework.

Design and develop efficient, reusable, and reliable code for both front-end and back-end components.

Collaborate closely with the design and product teams to translate UI/UX design wireframes into functional web applications.

Create and optimize database schemas and queries (MySQL, MongoDB, etc.) for performance and reliability.

Implement and maintain RESTful APIs for seamless integration with front-end interfaces.

Conduct code reviews, debugging, and troubleshooting to maintain code quality, performance, and application stability.

• Candidate should have strong work experience in JavaScript(ES6+)
• Hands on application development using Node JS, Express JS, MongoDB and Mongoose
• Good understanding of Web Technology, RESTful APIs, JSON structures
• Proficient understanding of code versioning tools, such as Git
• Exposure in AWS Services will be an added advantage

Responsibilities and Duties

• Design, code, test and document software according to the functional requirements.
• Analyze, diagnose and resolve errors related to applications.
• Provide application and user support.

About Us

Instavans is a Logistics tech startup focused on the development of SaaS products for the Road Trucking industry. Instavans has built and rolled out SmarTruck™, a SaaS based TMS with a private marketplace. SmarTruck has customers in India & the MENA region and is poised to enter Latam and Sub-saharan Africa.

The company’s innovative go-to-market plan involves working with large Shippers and 4PLs (Fourth Party Logistics Service Providers) to synergistically bring their Carriers on board.

We are looking for people to help us supercharge our growth, while we continue to embody the values that have got us so far already. As we are a rapidly growing company you will gain exposure to all areas of the platform, understanding the key success drivers at an engineering team and gaining invaluable experience for your future career. Success in this role will lead to opportunities for growth across the entire engineering team with significant scope for future development.

We have openings in Frontend (Angular 8+), Backend(Node.js), Android (Kotlin) and QA (Automation)

Job title: Full Stack Developer

Location : Chandigarh