Backbone.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.

📢 We’re Hiring: MEAN Stack Developer

Shift Timing: 10:00 AM – 7:00 PM

Location: Kolkata | Work Mode: Office | Immediate Joiner Preferred

We are looking for an experienced MEAN Stack Developer with strong knowledge of MongoDB, Express.js, Angular, and Node.js to join our dynamic development team.

Requirements:

• Minimum 4 years of experience in MEAN Stack Development.
• Strong proficiency in Node.js and Angular.
• Hands-on experience with MongoDB, Express.js, and RESTful APIs.
• Knowledge of Git or similar version control tools.
• Strong problem-solving and teamwork skills.
• Immediate joiner preferred.

Bookeventz is looking for a rock star coder to work closely with the founders to build on our core platform and mobile applications.

A Techie who has an Expert understanding of Server Logic, REST APIs and core web technologies.

Should have a great understanding of MEAN/MERN Stack.

Our Tech Stack:

-PHP, CodeIgniter, MVC Framework

-Node JS, React JS, JavaScript, HTML, CSS

-JQuery

-Redis, MySQL/Maria DB

-Linux, Ubuntu

A few Challenges we are working on right now:

-Working on various optimization to improve page speed.

-Improving Server Response & Load balancing.

-Server-side development on various projects.

-Customized CRM to increase leads handled per salesperson to double a day.

-Create a platform for users to create their custom event website.

Job Objectives:

-Integration of user-facing elements developed by front-end developers with server-side logic

-Optimize web applications to maximize speed and scale. Support diverse clients from high-powered desktop computers to small mobile devices

-Optimization of the application for maximum speed and scalability

-Implementation of security and data protection

-Collaborate with senior management, operations & business team

-Building Rest APIs and maintaining Database optimizations

Looking For:

-Minimum 2 years of experience with Internet companies

-Great understanding of Node, react, Express, Socket.io, MVVM framework

-Worked on an e-commerce website, server handling and deployments scripts

-The one who has worked on the customer-facing product for 2 years

- Strong knowledge of MEAN stack (Min 1 yr professional working experience) with basic

  understanding of LAMP

-Experience designing scalable, fault-tolerant systems and databases."

Node.js Developer / NestJS Developer – Job Description

A Bachelor’s Degree or Master’s Degree in Computer Science is preferred with excellent problem solving skills.

Job Type: Full-time

Job Location: Bengaluru (on site)

Preferred Skills: TypeScript / Nodejs, SQL/ MySQL

Experience: Min 2yrs in similar Role.

Responsibilities:

• Develop and Maintain Server-side Logic: Design, implement, and maintain the server-side logic using Node.js, ensuring high performance and responsiveness to requests from the front-end.
• API Development: Build and maintain RESTful APIs for seamless integration with front-end services and third-party applications.
• Database Management: Work with databases (such as MongoDB, MySQL, PostgreSQL) to ensure data consistency, reliability, and optimal performance.
• Code Quality and Testing: Write clean, maintainable, and efficient code. Implement automated testing platforms and unit tests.
• Collaboration: Work closely with front-end developers, designers, and other team members to define and implement technical solutions that meet business requirements.
• Troubleshooting and Debugging: Identify issues, debug, and resolve bugs and other technical problems in a timely manner.
• Documentation: Create and maintain documentation related to application development, API usage, and system operations.
• Stay Updated: Keep up-to-date with the latest industry trends and technologies to ensure the application remains modern and competitive.

Key Objectives/Responsibilities of this Role:

• Understand the UI needs, backend design and data design and create the backend code for the same
• Backend development in NodeJs 12 & above, ExpressJs, NestJs, RESTful web services, Docker, MongoDB, Azure AKS or Kubernetes
• Collaboration with other team members (Architect, UI, backend developers, DBA, Data analytics team) to work in coherence
• Working experience into Agile and scrum methodologies
• Manage SDEs and Interns to drive the deliverables

Mandatory Skillset & Tools: NodeJs 12 and above, ExpressJs, NestJs, Writing Unit Tests , Scheduler, Mongo DB, working knowledge in Kubernetes (AKS), GIT version control, Event driven design, Microservices, con-currency, RESTful web-services, Docker

Primary Skill: NodeJs 12 & above ExpressJs, NestJs, Microsoft development platform, Testing & Debugging skills, Postman, CI/CD pipeline, Docker, Docker hub, Writing UNIT tests

Secondary Skill: Load & performance testing, testing REST Web services, Basic shell commands, Linux, Good written, verbal and presentation skills, Soft spoken, Pro-active

Responsibilities:

• Resolve complex technical issues and make design decisions to meet the critical requirements of scalable, highly available, multi-tenant enablement of services in the cloud.
• Independently investigate, present options, review and implement completely new functionality OR re-architect an existing solution to meet growing needs
• You will work closely with other development teams, product management, UX, and QA to define and implement a new product offering while ensuring continued functionality.
• Work with various external (application) teams to integrate with the product and help guide the integration.
• You will implement solutions that include database schema, business logic, and some presentation layer work.
• You will use existing methods and best practices in the software industry to create features and platforms with the highest levels of security, reliability, efficiency, and scalability.
• Experience mentoring senior developers.

Requirements:

• 8+ years of experience in software development experience with a proven track record of making technical decisions
• 8+ years of experience in coding in more than one programming language, e.g. Python, GoLang, node.js, etc
• Intimate working understanding of modern web applications from the database to browser
• Intimate understanding of MongoDB and extensive experience with database-driven applications
• Great problem-solving skills and ability to abstract functional requirements
• Excellent communicator in both technical and non-technical contexts
• Experience designing and improving complex software applications
• Experience coaching and mentoring developers at various levels of experience
• You have a sound understanding of programming fundamentals & their application to highly scalable web-based systems.
• You have successfully led a small agile team.