Software 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.

Company Overview:

OLOID is a leading provider of physical identity and access technology committed to enabling converged cyber and physical security for the modern workplace. Dedicated to ensuring secure and privacy-forward authentication, OLOID’s objective is to establish a framework that connects and manages workplace security by integrating with HR, IT, and various records systems, unifying cyber and physical identities across the organization.

Job Summary

We are seeking a highly skilled and experienced Senior Node.js Developer to join our development team. The ideal candidate will have a strong background in software engineering with a focus on JavaScript, Node.js, and modern web technologies. You will play a key role in building scalable backend services, integrating APIs, and contributing to full-stack development using frameworks like ReactJS.

Key Responsibilities

·         Design, develop, and maintain robust backend services using Node.js

·         Collaborate with front-end developers to integrate user-facing elements with server-side logic

·         Develop and consume RESTful APIs for various services

·         Write clean, maintainable, and secure code following best practices

·         Troubleshoot, debug, and optimize application performance

·         Implement authentication and authorization mechanisms where needed

·         Contribute to code reviews and technical discussions

·         Maintain and monitor applications on Linux-based environments

Required Qualifications

·         Bachelor’s or Master’s degree in Computer Science or a related field

·         Minimum 8 years of professional programming experience

·         At least 3 years of hands-on experience with Node.js development

·         Strong knowledge of JavaScript, particularly in browser-based frameworks such as ReactJS and Redux

·         Experience with Node.js frameworks such as Express or Hapi (preferred)

·         Solid understanding of asynchronous programming and its patterns

·         Skilled in troubleshooting and debugging complex applications

·         Familiarity with Linux environments

·         Proficiency in working with RESTful APIs and API integration

Job Description

We are looking for a Software engineer to join our cutting-edge development team as it grows. We want someone who is comfortable asking “why?” The ideal candidate is a divergent thinker who understands industry best practices and has experience with multiple coding languages. They are a team player possessing strong analytical as well as technical skills, and are able to communicate the logic behind technical decisions to non-tech stakeholders. They must be comfortable working in an agile environment and have the ability to “take the wheel” when necessary. They will work with multiple technologies and develop a keen sense of evaluating and using the appropriate technology to derive the best solution.

What you'll do

• Participate in the entire application lifecycle, focusing on coding and debugging
• Write and test code to ensure compatibility and stability: refine and rewrite as necessary
• Troubleshoot and debug applications
• Collaborate with Front-end developers to integrate user-facing elements with server-side logic
• Follow the spec and its requirement and develop the features/project
• Providing written knowledge transfer material as documents

Must have

• 1+ years experience coding in a modern programming language like Java, GoLang, Node JS, Python or RoR 
• Solid understanding of data structures and algorithms, good design principles like SOLID 
• Problem solving & analytical aptitude 
• Excellent verbal and written communication skills 
• Experience in source code control with git/svn
• Should be flexible to work on a variety of programming languages like NodeJS, Python, etc. and on XML technologies like XSLT, XML Pipelines, etc

Good to have

• Experience working in the Node JS stack 
• Unit testing and automation frameworks 
• Experience working in a public cloud environment (AWS preferred) 
• Working with distributed microservice architectures 
• Agile product development life cycle

Eligibility Criteria 

• Bachelor's or master's degree in computer science or related fields from a reputed institution
• Any internship experience is a plus
• Experience: 1-4 years 
• Location: Chennai. Work from office (Mon to Fri)

Stalwart Themius is hiring a Backend Developer - Node.js to join our client's team in Mumbai. The selected candidate will work on cutting-edge technology and product. He/She will gain experience and will stand an opportunity to be hands-on, collaborative and fluent in the latest server-side, web capabilities and technologies. This will include all aspects of the creative process from conceptualizing to completion including design, development, presenting ideas, and working with the leadership team.

• Role: NodeJS Developer
• Experience: 1 - 4 years
• Location: Airoli, Navi Mumbai

Responsibilities:

• Use your knowledge about High Availability, Load Balancing, Scalability, and Distributed Computing in order to design database architectures and data structures that can grow with our business 
• Collaborate with Product, Engineering and Business teams to drive the architecture, design, development and deployment of our analytics and a reporting portal
• Identify and address architecture challenges to ensure a robust, safe, securely accessible, highly available and highly scalable product that meets or exceeds customer and end-user expectations
• Collaborate with leadership and technology teams on creative concepts, and then launch and shape the required design components for each presentation and/ or production
• Able to work closely / collaborate with multiple product development teams including software developers

Primary Skills:

• 1-4 years of experience with Node.JS
• 1-4 years of experience with NoSQL (MongoDB)
• Experience with Agile Software Development

Preferred Skills:

• Knowledge of Software Deployment
• Knowledge of IT Security for Web Services
• Expert in using Revision Control Systems (Git)
• Must have outstanding communication and collaboration skills

Benefits:

• Competitive salary and benefits package.
• Opportunity to work with a growing company.
• Collaborative and supportive work environment.
• Opportunities for professional development.

What you need to have:

Job Description:  

As a L3 analyst, you will play a key role within the Application Management team, leading services for its customer(s). This service has responsibility for the smooth daily operational running of the Client platform both in the cloud and on-premises. The Client application is business critical and centrally manages data for trading, settlement, risk, client and regulatory reporting systems. As a L3 analyst, you will be responsible for supporting complex infrastructure and application issues raised by L1/L2 support teams, and business analysts. You would also be working on client requests for enhancements, fixes, maintaining custom code, and following the best practices such as Agile, DevOps, etc.

The role is a technical role requiring a good technical knowledge of SQL/PLSQ, Core Java along with good debugging skill while supporting client implementations. You should have basic understanding on Unix system and commands. The ability to troubleshoot issues, assist users and help write specifications is essential. This position also works with product management to improve the software engineering processes and practices associated with continuously building, deploying, and updating software and environments.

• Accountability and primary responsibility/duties:
• A typical day would look like as follows: -
  • 40% support issues.
  • 40% configuration/development work.
  • 20% continuous improvement, automation, CICD, so on.
• Activities would range across the lifecycle from discovery to post-implementation support.
• Understanding client’s requirement, replicate the problem and providing the solution
• Understanding and developing new requirements coming in from BAs (Business Analysts) and customers.
• Update the existing functionality based on client needs.
• Develop changes that cater to enhancing the product and/or fixing production issues
• Prepare product releases of software components. (Java/SQL-PLSQL)
• Contribute in all phases of the development cycle. (development/Deployment/Testing, peer review)
• Create technical document for all changes made.

Required Qualifications/Knowledge/Skills

• Bachelor’s degree in Computer Science or related field
• Strong basics and working experience in following technologies: -
  • Core Java.
  • SQL / PLSQL coding.
  • Object Oriented Programming concepts and data structures.
• Working knowledge on Unix platform
• Working knowledge on XSLT and XML handling
• Basic understanding App & web server working knowledge (JBOSS, WebLogic and WebSphere) and debugging skills.
• Advantageous to have:
  • Working understanding on CICD, Dev-ops technologies.
  • Queuing technologies including Kafka, MQ, Solace.
  • Scripting including Python, Unix, java.
• Hands on knowledge of Dev ops processes and tools Good interpersonal and communication skills.