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About the Role:
We are seeking a highly skilled and passionate Full Stack MERN Developer to join our growing development team. The ideal candidate will be proficient in JavaScript and have experience working with both MongoDB and PostgreSQL databases. As a Full Stack Developer, you will be responsible for designing, developing, and maintaining scalable and performant web applications across our product verticals.
Responsibilities:
- Collaborate with product managers, designers, and other developers to design and develop full-stack web solutions.
- Build responsive, user-friendly interfaces using React.js.
- Develop robust and scalable backend services using Node.js and Express.js.
- Design, implement, and manage databases using MongoDB and PostgreSQL.
- Develop and integrate RESTful APIs and third-party services.
- Ensure cross-platform optimization for mobile responsiveness.
- Write clean, maintainable, and well-documented code.
- Conduct code reviews, unit testing, and performance tuning.
- Troubleshoot, debug, and upgrade existing applications.
- Ensure security and data protection best practices.
Requirements:
- 1-5 years of experience as a Full Stack Developer (preferably MERN stack).
- Proficient in JavaScript, both frontend and backend.
- Strong experience with React.js, Node.js, and Express.js.
- Working knowledge of MongoDB and PostgreSQL.
- Familiarity with version control systems (e.g., Git).
- Understanding of server-side architecture and RESTful APIs.
- Familiarity with cloud platforms (e.g., AWS, or GCP) is an advantage.
- Good understanding of security and performance optimization.
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.
About Us:
Nativebyte is a software services company with focus on building large scale enterprise applications which work with millions of users. We work with startups and large corporates alike to develop end to end technology solution for them.
Job Description:
We are looking for a Backend developer who is proficient with Node.js. Your primary focus will be on developing user interface components and implementing them following well-known Node.js workflows. You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.
Responsibilities
- Responsible for server-side web application logic and integration of the work front-end developers
- Write the web services and APIs used by front-end developer and mobile application developers.
- API integration Backup and restore technologies for a website’s files and DB
Skills:
- Proficient knowledge of the back-end programming language and the framework that is used by the company
- Understanding of front end technologies like HTML, CSS, and JavaScript (to communicate with team members on the front-end)
- Ability to manage a hosting environment, including database administration as well as scaling applications to handle load changes
- Knowledge of accessibility and security compliance
- Experience with version control, such as Git
Notice Period - Immediate or 15 days or 30 days.
Responsibilities:
As a backend developer you would be responsible for:
- Executing full lifecycle software development
- Architect and conceptualise the solution from initiation to completion meeting client requirements
- Work with customer and their integration partners to ensure the product is well integrated
- Programming well-designed, testable and efficient code
- Develop flowcharts, layouts and documentation to identify requirements and solutions
- Work with cross-functional teams (Product, Engineering and ML team) to craft custom solutions
- Ensure clients change requests are addressed effectively in a timely manner
Requirements:
- 2+ years of experience in architecture and developing high performance web applications
- In-depth understanding of the entire web development process (design, development, and deployment)
- Strong NoSQL and/or SQL database design and query writing skills with a commitment to performance and efficiency
- Knowledge of RESTful API and SOAP Webservices paradigms
- Experience with CRM/ERPs like systems SAP, Oracle, SalesForce, Servicenow, Workday, etc. would be a huge plus
- Ability to operate in a highly ambiguous and fast-paced environment
- Superior verbal and written communication skills
Our Technology Stacks:
- Demonstrated experience in our tech stack will be a big plus as it lets you get up and running with our product that much sooner
- Node.js back-end with typescript
- MongoDB as database
- React to power our user interfaces (don't worry, we don't expect it for back-end)
- NGINX as our web server
- RabbitMQ
- Redis
- Elasticsearch
- Docker
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 will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.
Responsibilities
- Integration of user-facing elements developed by front-end developers with server side logic
- Writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Implementation of security and data protection
Skills And Qualifications
- Strong proficiency with JavaScript & OOPS
- Knowledge of Node.js and frameworks available for it
- Understanding the nature of asynchronous programming and its quirks and workarounds
- Good understanding of server-side CSS preprocessors
- Basic understanding of front-end technologies, such as HTML5, and CSS3
- Understanding accessibility and security compliance
- User authentication and authorization between multiple systems, servers, and environments
- Creating database schemas that represent and support business processes
- Implementing automated testing platforms and unit tests
- Proficient understanding of code versioning tools, such as Git
- Knowledge of AWS will be preferable
- Looking for a highly capable Node.js developer to optimize our web-based application performance.
- Developing and maintaining all server-side network components.
- Ensuring optimal performance of the central database and responsiveness to front-end requests.
- Designing customer-facing UI and back-end services for various business processes.
- Qualification: Bachelor's degree in computer science, information science, or similar.
- Should have 4 years' experience as a node js developer.
- Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
- Knowledge of front-end technologies such as HTML5 and CSS3.
- Superb interpersonal, communication, and collaboration skills.
- Exceptional analytical and problem-solving aptitude.
- Great organizational and time management skills.
- Salary is negotiable for right fit.
- You will own a functional area - from product conception to its delivery to customers
- You will be designing and coding independently in multiple tech components related to your functional area
- You will also need to develop a deep understanding of non-functional requirements, such as reliability and availability, scale, horizontal scalability, etc., over time and make tech stack decisions accordingly
- You will also be actively mentoring our junior engineers. You need to someone who owns the codebase quality
- We are looking for seasoned engineers who are quality conscious, product thinkers, business cognizant and smart – not just coders
- Engineers get to significantly amplify the impact of their efficient work or creations with the scale that startups operates at
- Love the Startup Hustle? You have come to the right place!
Requirements:
- 2+ years of deep expertise with JavaScript (Node.js) and any objected oriented high level proprietary or open source language with strong programming constructs
- Substantial experience in building complex and scalable solutions
- Strong problem solving skills
- Good understanding of data structures & algorithms and their space & time complexities
- Strong technical aptitude and a good knowledge of CS fundamentals
- Hands-on experience working with Databases and Linux platform
- Strong object oriented design skills, ability to apply design patterns, and an uncanny ability to design intuitive module and class-level interfaces
- Experience in Consumer facing apps - Analytics SDKs integrations, Marketing SDKs integrations, Performance optimisation, SQL databases
- Should have developed and delivered successful mobile app projects
- Experience with Devops including Docker, AWS, Serverless
Perks
- Opportunity to start from scratch
- Flexible and cool work environment - Startup work culture
- Young and dynamic team
- Offsites
- Regular game and hangout sessions every week
We are now looking to onboard an exceptional Fullstack Developer on our team. They will be an integral part of our technology function and work on challenging, cutting-edge problems, and contribute to the solution design and development for various software systems and subsystems. They will develop new and interesting products for our B2B users and will work with the best minds in the industry.
Please apply if you have:
- 2-5 years of work experience, preferably in a startup
- An engineering degree preferably, from a top-tier school (or equivalent experience)
- Hands-on experience in developing end-to-end applications using Node.Js, ReactJs,
- Knowledge of HTML/CSS, web standards, best practices
- Experience of working with databases - MySQL, MongoDB
- Good understanding of asynchronous request handling, partial page updates, and AJAX
- An experience in writing clean, semantic code with cross-browser compatibility in mind
- Proficient understanding of code versioning tools, such as Git/SVN
- Excellent coding and debugging skills
- A passion and the ability to make beautiful, smooth, delightful web experiences
- A Will-Do attitude
We have:
- A team of aces, from top-tier schools and startups, to work with
- A fast-paced, data-driven, and fun work environment
- A huge appetite for new, disruptive, creative and implementable ideas
- An open work culture
We offer:
- Competitive salary
- Great working environment, opportunity to work directly with the founders on very exciting real-life problems.
- Opportunity to grow really fast.
- Opportunity to hire a team & mentor them in the future.
- ESOPs
Hiring process:
- Shortlist
- Intro call of 15min
- 1-2 Tech rounds
- HR round
- Offer rollout
If this is something that interests you, let's talk.








