NodeJS 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.

JOB DESCRIPTION:

Location: mumbai

Mode of Work : 3 days from Office

DSA(Collections, Hash maps, trees, Linkedlist and Arrays, etc), Core Oops concepts(Multithreading, Multi Processing, Polymorphism, Inheritance etc) Annotations in Spring and Spring boot, Java 8 Vital features, database Optimization, Microsevices and Rest API

• Design, develop, and maintain low-latency, high-performance enterprise applications using Core Java (Java 5.0 and above).
• Implement and integrate APIs using Spring Framework and Apache CXF.
• Build microservices-based architecture for scalable and distributed systems.
• Collaborate with cross-functional teams for high/low-level design, development, and deployment of software solutions.
• Optimize performance through efficient multithreading, memory management, and algorithm design.
• Ensure best coding practices, conduct code reviews, and perform unit/integration testing.
• Work with RDBMS (preferably Sybase) for backend data integration.
• Analyze complex business problems and deliver innovative technology solutions in the financial/trading domain.
• Work in Unix/Linux environments for deployment and troubleshooting.

Required Skills & Experience:

• 3– 7 years of strong hands-on experience in Core Java, Spring boot, microservices, data structures.
• Deep understanding of Object-Oriented Programming (OOP), data structures, algorithms, and design patterns.
• Proven experience with Spring, CXF, and REST/SOAP web services.
• Solid understanding of microservices architecture and distributed systems.
• Experience working with Sybase or other relational databases.
• Expertise in multithreading, concurrency, and high-throughput server-side development.
• Exposure to capital markets, sales & trading platforms, or similar financial services applications.
• Good working knowledge of Unix/Linux environments.
• Experience in solution architecture and design documentation is a strong plus.
• Strong problem-solving skills, analytical thinking, and a proactive attitude.
• Excellent communication and interpersonal skills to work effectively with global teams.

Preferred Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• Previous experience in investment banking, capital markets, or financial technology domains.

 For more details:

Website: www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

LinkedIn: Wissen Technology

Job Summary:

We are looking for an experienced MERN Project Manager to lead and oversee the development and maintenance of our MERN (MongoDB, Express.js, React.js, Node.js) stack projects. The ideal candidate will have a strong technical background, excellent communication skills, and the ability to manage cross-functional teams to deliver high-quality software solutions on time and within budget.

Key Responsibilities:

1. Project Planning & Execution:

• Define project scope, goals, and deliverables in collaboration with stakeholders.
• Develop detailed project plans, timelines, and milestones.
• Monitor project progress, identify risks, and implement mitigation strategies.

1. Team Management:

• Lead, mentor, and manage the development team, ensuring alignment with project goals.
• Allocate tasks and responsibilities among team members based on expertise and project needs.
• Conduct regular team meetings to track progress and address challenges.

1. Technical Oversight:

• Provide technical guidance and ensure best practices in the MERN stack development process.
• Review code and ensure adherence to coding standards, scalability, and performance optimization.
• Collaborate with DevOps for CI/CD pipeline implementation and AWS/EC2 infrastructure management.

1. Stakeholder Communication:

• Act as the primary point of contact for clients and stakeholders.
• Provide regular updates on project status, milestones, and potential roadblocks.
• Gather and translate business requirements into technical specifications.

1. Quality Assurance:

• Ensure proper testing and debugging practices are followed.
• Facilitate UAT (User Acceptance Testing) and incorporate feedback into the development cycle.
• Oversee deployment and post-deployment support.

1. Documentation & Reporting:

• Maintain comprehensive project documentation, including requirements, design, and progress reports.
• Prepare and deliver project status reports to management and stakeholders.

Required Skills & Qualifications:

 Educational Background:

• Bachelor’s degree in Computer Science, Information Technology, or a related field.

 Technical Skills:

• Strong hands-on experience with MongoDB, Express.js, React.js, and Node.js.
• Familiarity with DevOps practices, especially in AWS EC2 environments.
• Proficiency in Git and version control systems.
• Experience with Agile/Scrum methodologies.

 Soft Skills:

• Excellent problem-solving and decision-making abilities.
• Strong leadership and team management skills.
• Exceptional verbal and written communication skills.

 Preferred Qualifications:

• Certifications in project management (PMP, Agile, or Scrum Master).
• Experience with additional cloud platforms or DevOps tools.
• Prior experience managing MERN stack projects at scale.

At Appleute, we're not just developing software; we're shaping the future of technology by partnering with startups and SMEs to bring groundbreaking ideas to life. From sculpting Minimum Viable Products (MVPs) to scaling full-fledged platforms for millions of users, we engage in projects that challenge the status quo, powered by a blend of innovative technology, visionary founders, and transformative business models. Our work is driven by a passion for creating market-leading products that redefine industries.

Why Join Us?

Global Remote Culture: Embrace the freedom to work from anywhere in the world. Our remote-first approach ensures you have the balance and flexibility to work where you thrive.

Results-Driven Environment: We value outcomes over hours. Focus on making a significant impact, with the flexibility to manage your schedule around what works best for you.

Flat Organizational Structure: Say goodbye to bureaucracy. Our flat hierarchies mean your ideas and contributions are valued and can make a direct impact from day one.

A Team of A-Players: Join an elite team of tech enthusiasts and innovators. Our selective hiring process ensures you're working among the best in the industry, fostering an environment of learning and growth.

Innovative Tech Stack: Dive into cutting-edge technologies and tools. From JavaScript and TypeScript to AWS, Docker, and React/Express, you'll have the opportunity to work on exciting projects using the latest in tech.

You're a perfect fit if you're dedicated to:

Excellence in Code Quality: You understand that great products are built on clean, maintainable code.

Collaborative Problem Solving: You thrive in open discussions and enjoy brainstorming solutions with your team.

Continuous Learning: Your curiosity drives you to stay on top of new technologies and coding practices.

Taking Ownership: You take pride in your work, from concept to deployment, ensuring excellence every step of the way.

Your Impact:

Build Scalable Solutions: Develop software that's ready to grow from thousands to millions of users, focusing on performance and scalability.

Drive Integrations and Deployment: Implement seamless software integrations and efficient deployment strategies to enhance product capabilities.

Enhance Mobile Experience: Craft mobile-optimized applications and features that deliver exceptional user experiences.

Ensure usable Documentation: Hone your skills in improving documentation to be clear and concise that supports your team and project needs.

Technologies You'll Work With:

Frontend and Backend: JavaScript, TypeScript, React/Express, React Native, Node.js

Database Management: MySQL, Postgres and Prisma

Deployment and Version Control: AWS, Docker, Git/Gitlab, NPM

Salary Range - ₹30L – ₹40L

About Quantela

We are a technology company that offers outcomes business models. We empower our customers with the right digital infrastructure to deliver greater economic, social, and environmental outcomes for their constituents.

When the company was founded in 2015, we specialized in smart cities technology alone. Today, working with cities and towns; utilities, and public venues, our team of 280+ experts offer a vast array of outcomes business models through technologies like digital advertising, smart lighting, smart traffic, and digitized citizen services.

We pride ourselves on our agility, innovation, and passion to use technology for a higher purpose. Unlike other technology companies, we tailor our offerings (what we can digitize) and the business model (how we partner with our customer to deliver that digitization) to drive measurable impact where our customers need it most. Over the last several months alone, we have served customers to deliver outcomes like increased medical response times to save lives; reduced traffic congestion to keep cities moving and created new revenue streams to tackle societal issues like homelessness.

We are headquartered in Billerica, Massachusetts in the United States with offices across Europe, and Asia.

The company has been recognized with the World Economic Forum’s ‘Technology Pioneers’ award in 2019 and CRN’s IoT Innovation Award in 2020.

For latest news and updates please visit us at www.quantela.com

Overview of the Role

Collaborate with cross-functional teams to define, design and build performant modern web applications and services. Build high quality web applications and services by writing clean and modular code

Must have Skills

• 10+ years of experience in leading teams and delivering product, write unit and integration tests to ensure robustness and reliability of web applications and services. 
• Measure and improve performance of microservices.
• Catalyze growth within the team through code reviews and pair programming to maintain high development standards Investigate operational issues to find the root cause and propose improvements Design, build, and maintain APIs, services, and systems across Stripe’s engineering teams.
• Expert level of experience in design and development of Web Applications, highly scalable distributed systems.
• Should have experience in development skills using latest technologies including NodeJS, Microservices, Elastic search, Timescale DB, Kafka, Redis, etc.
• Should have exposure in NoSQL and SQL development.
• Comprehensive knowledge of physical and logical data modelling, performance tuning.
• Should possess excellent communication, presentation, and interpersonal skills.
• Ability to work collaboratively and productively with globally dispersed teams
• Build high performance teams and Coach team for successful career growth
• Experience working with relational and non-relational databases, query optimization, and designing schema

Desired Background

Bachelors/Masters degree in Computer Science or Computer Applications