Sr. Backend Developer for a Product Based Company ( Node.js )

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.

• Design, develop, code and test the solution

• Experience working with large datasets and NoSQL database technologies (e.g. Cassandra, ES) 

• 5-10 yrs of industry experience

• Energetic self-starter, with a desire to work in a startup environment

• Proficient in advanced Java programming skills

• Expert in Application development cloud/on premise end to end. Middle layer, DB layer.

• Nice to have understanding on MQ (e.g. Kafka)

• Good hands on in Complex Event Processing systems

• Solved scale and performance issues while dealing with huge sets of data. Pre compute or data aggregation frameworks to achieve good response time

• Experience working with large datasets and NoSQL database technologies (e.g. Cassandra, ES)

• Experience of debugging applications running on Unix like systems (e.g. Ubuntu, CentOS)

• Experience developing RESTful APIs for complex data sets

• Knowledge of container based development & deployment (e.g. Dockers, K8s)

• Expertise in software security domain, a plus

As a Backend Developer for Amura, expect your days to be supercharged with challenges and excitement while building and mastering the core software with your own bare hands. You will be developing low-latency APIs and functions to exchange data between the server and the user ensuring high performance and responsiveness. You are going to work closely in developing challenging components like a chat application, event scheduler, and much more. We are looking for someone who comes alive while developing server-side application logic with good problem-solving skills.

Responsibilities

- Have an eye for building, maintaining, and creating a schema for RDBS.

- Define and communicate technical and design requirements.

- Build high-quality reusable code that can be used in the future.

- Work seamlessly in any IDEs like VS Code, WebStorm, etc.

- Work collaboratively with BA teams to ensure the requirement

criteria are met.

- Participate in the creative process. Thinking out of the box.

- Writing time-efficient, space-efficient, and generic code.

- Oversee all technical challenges that might occur during development.

- Delivering user story development as per acceptance criteria.

- Preparing LLD (Low-level document) on a solution or a component for better understanding to another developer.

- Participate in the entire application life cycle focusing on coding and debugging.

- Learn about new technologies and stay up to date with current best practices.

Requirements-

- Hands-on backend web development experience.

- 7+ years of relevant experience

- Decent understanding of Git, and Bit Bucket.

- Excellent grip on node JS/express JS, like how nodeJS/expressJS works, behind the scenes.

- A person who thinks like a compiler.

- Good problem-solving skills through JavaScript /Typescript.

- Ability to resolve a real-time problem through code.

- Familiar with Agile software development.

- Good understanding of JSON.

- Matured enough to consume and make API calls.

- Experience with issue tracking, and bug tracking tools like JIRA, and Azure DevOps.

- Working on any cloud services like AWS, or Azure would be an added advantage.

- Good at estimating ETA and also good at delivering by ETA.

- Be up for anything. A can-do attitude.

- Not just restricted to the backend.

What is our technology stack?

We have used top-notch technologies to build our product. We use React JS for web apps and react native for mobile apps. Both the frameworks are coded in typescript. We use AWS lambdas, ECS, and API Gateway for hosting our backend services. All the services are written in Node JS/Express JS. We use a wide variety of AWS services like Dynamo DB, S3, Cognito, SNS, SQS, CloudFront, etc. We use Figma for UI/UX design and wireframing.

Are there any technologies you want me to be good with? Yes, we expect you to be good in node Js

Here are answers to some questions you may have:

Who is Amura?

We are a health start-up with a presence in multiple countries

How old are you?

5 years

What is special about you?

Our clients. The Amura protocol is an intensive health program to follow and execute and the clients who choose to go through the journey are the most special. Next comes our team. The Amura Team is one filled with brilliant minds, brimming with creativity be it in operations, medical, or marketing. You can be one among them. Come and explore.

What is special about working with you?

You will grow crazy fast. As a rule of thumb, you can expect 5 years of growth for every year you are with us. But beware, growth like that cannot be achieved with life as usual. / But beware, growth like that cannot be achieved by any ordinary person.

What kind of people are you looking to add to your team?

We are looking for people who, when allowed to have a measurable

impact on the world will take it. Who value human life and are willing to work tirelessly on not only improving themselves for their own sake but for the benefit of everyone in the world. We work on the edge of our own best, striving to find what could come next in our growth. Anyone who joins the team will not only find the challenges they need to push

them, but also will have Amura at their back for support and guidance.

Is this a WFH role?

If you are in a role where you keep pushing your envelope every day, you are going to be asked to come to the office. But if you are in a role that calls for doing stuff that you are already very proficient in, you will be required to be in the

Where is your office?

Chennai (ECR)

Do you have an online presence?

https://amura.ai (we are @AmuraHealth on all social media)

Perks I get when I join Amura?

Health is the hardware of success. Amura has a one-of-its-kind performance health program. It has helped thousands of people to grow and flourish in dimensions that are important to them. Everyone in Team Amura, and their dependents, get all of our medical knowledge and services at no cost. This is very unique to Amura. Until you speak with one of us, you can never know what an unbelievable power-up it can be.

Software Engineer 

About Brew:-

We believe that the future of banking will be built on top of Cryptocurrencies and DeFi Protocols. However, in its current form, DeFi is too expensive and complex for a common person to participate in. We want to change that with Brew. 

Underneath the hood, Brew is a Wallet that makes it super simple to make deposits and take out loans on DeFi and do peer-to-peer and merchant transactions without having to worry about gas fees or navigating multiple chains and tokens. 

The founders come from a strong background in technology and product. We’re backed by some of the best investors in the startup and crypto ecosystem. We’re based out of Bangalore, India but are open to the remote too. 

Role:-

We seek engineers who are passionate about building great products and have the conviction that Crypto is going to change the world for the better. 

You may be fit for this role if you 

• Love Programming and are able to write high-quality code.
• Have between 1-3 years of experience.
• Are curious and have a willingness to learn. 
• Maintain a high degree of ownership and accountability.
• Are proficient in OOPs, Data Structures, and Algorithms. 
• Familiarity with Solidity, Node.js, React Native and C++ is a plus. 
  
  

As part of being the founding team, you will play a crucial role in shaping and building the product. In recognition of that, there will be a meaningful equity component in the compensation.

We look forward to talking to you.

Key Skills

• In depth knowledge of Node.js
• Knowledge of integration with front-end JavaScript libraries and frameworks like react js
• Should be experienced with Micro-services.
• Knowledge of both SQL and NoSQL databases such as MySQL, Oracle, MongoDB
• Working experience of Git preferably bitbucket.
• Good knowledge of CI/CD preferably using bitbucket pipelines and Jenkins.
• Working knowledge of agile methodologies and techniques

• Experienced backend developer with extensive work on nodejs and backbonejs along with good English spoken language.
• Develop new user-facing features
• Build structured, reusable code and libraries for future use
• Optimize applications for maximum speed and scalability
• Maintain, contribute and adhere to our programming best practices and guidelines
• Advanced understanding of emerging web technologies

Key Functions & Roles of the Candidate:

• Would be part of core technical team and will be updating the product with new and challenging tasks
• Good understanding of the concepts behind models, collections, and views
• Familiarity with input validation techniques and approaches
• Ability to perform in a fast-paced, deadline-driven environment
• Enthusiasm for innovation in the tech industry, including continuous learning and improvement

Specific Skill Set:

• Salesforce Implementation or Knowledge
• Node.js, MongoDB, Heroku API
• API and NODE.JS is a must

Type: Individual contributor with good hands on proficiency. 

Must have

• Strong proficiency in at least one of  Java, Ruby, Python
• Exposure to databases: any of  PostgreSQL, MySQL, Apache Cassandra
• Any NoSQL database experience is a plus
• Exposure to AWS cloud infrastructure: EC2 or S3 
• Proficiency with Git
• MUST: Using REST to make API calls. 

Great to have: 

• Experience working with one or more middleware, enterprise bus, queueing frameworks
• Any of Memcached/Redis, Apache Kafka / RabbitMQ / PubSub+ / AmazonMQ

Soft skills:

• Appreciation for clean and well documented code

What will you do at Tradyl:

(Examples for illustration only)

• Build a shipping service module that is called by our website to query shipping rates from India to a destination country. Configure this to so that an Ops person can update shipping costs as and when they change. Own deployment and monitoring of this service. 
• Use Zapier to build a workflow to export a MixPanel report into a Google sheet every day.
• Change our supplier portal (built on bubble.io) to make an API call to our customer facing site, whenever a supplier modifies his profile.
• Write an alert mechanism that identifies catalogues with insufficient information and makes them non discoverable, which can run every day.
• Work with Business Team to design a workflow for product inwarding using Airtable. Write a small app within Airtable so that whenever a product is updated as “shipped” in airtable, it updates the customer facing website.
• Use an open source dashboarding framework to create a quick dashboard to track important business events.