Node.js 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.

·        Should have 5 to 6 years of work experience as a Python Developer

·        Expertise in at least one popular Python framework (like Django, Flask or Pyramid)

·        Knowledge of object-relational mapping (ORM)

·        Familiarity with front-end technologies (like JavaScript and HTML5)

·        Should have completed B.E/B.Tech. /MCA in any field.

·        Good problem-solving skills and Team spirit.

·        Writing scalable code using Python programming language.

·        Testing and debugging applications.

·        Developing back-end components.

·        Integrating user-facing elements using server-side logic.

·        Assessing and prioritizing client feature requests.

·        Integrating data storage solutions.

Are you looking for a Senior Backend Engineer role in a high growth startup? Are you eager to learn and make a difference at work every day? If so, then read on.

At PlumQR, we work on revolutionizing the Food & Beverage industry with our cloud-based tech products. Millions of businesses across the world are switching for better, smarter & more hygienic products to reinvent their businesses. If you have what it takes to innovate & lead, we have just the right opportunity for you.

Requirements

• Minimum 3 years as a Senior Backend Engineer
• Strong software development experience in a SaaS product company
• Significant experience with NodeJS, React.js, React Native, MySQL, MongoDB, Java
• Cloud computing services (e.g. Google Cloud Platform)
• Strong problem-solving skills
• Ability to explain technical details to people inside the company

We are looking for a Node.js Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You may also need to integrate the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is desirable, but not essential. 

We are a top-quality boutique software development company. Delivering solutions that meet customers’ needs, business expectations. We combine proven techniques, industry knowledge and our technology expertise of skilled software developers to deliver high-quality software solutions. 

Duties and responsibilities: 

• Work as part of a team developing applications and services using Agile development methods. 
• Contribute to team and organizational improvements in process and infrastructure. 
• Code, test and operate node.js based services. 
• Effectively use tools and ingenuity to identify and fix defects before they become a problem. 

Requirements and qualifications: 

• Previous working experience as a Node.js Developer for 2 years or more. 
• In depth knowledge of Node.js. 

• Hands on experience with HTML, CSS, and AJAX. 
• Applicable knowledge of web libraries and frameworks. 
• Familiarity with the whole web stack, including protocols and web server optimization techniques. 
• Strong analytical skills and problem-solving aptitude. 
• Ability to work with stakeholders and fellow developers. 

• Good understanding of SQL databases.  
• Good understanding of REST APIs. 

• Strong programming skills in Javascript/TypeScript, Python or Go.
• Hands-on experience in API development and frameworks such Express, Loopback, Hapi.
• Good Understanding of SQL and NoSQL database.
• Experience in test driven development. (writing unit test and API test).
• Understanding of basic cloud computing concepts and experience in using any of the major cloud service providers(AWS/GCP/Azure).
• Ability to build and deploy the application in a containerized environment.
• Understanding of application logging and monitoring systems like Prometheus or Kibana.

Qualification: 

• B.E/B.Tech/M.E./M.Tech/M.S. from a reputed university with a good academic record.
• Curiosity to explore the cutting edge technologies and bake them in the products.
• Zeal and drive to take end to end ownership.