C1X AdTech Pvt Ltd is a fast-growing product and engineering-driven AdTech company  building next-generation advertising and marketing technology platforms.
Our mission is to empower enterprise clients with the smartest marketing solutions, enabling seamless integration with personalization engines and delivering cross-channel marketing capabilities.
We focus on enhancing customer engagement and driving measurable growth in Lifetime Value (LTV).
Our engineering team is world-class, covering front end (UI), back end (API/Java/Node.js), and Big Data engineering to deliver high-performance, scalable products.
Role Overview 
As a Node.js Developer , you will be responsible for the development of our Advertising & Marketing Technology (AMT) servers , integrations with third-party services and ad exchanges, performance tuning, and delivering new features aligned with business requirements.
 Objectives  
- Design and maintain scalable, efficient APIs and services using Node.js.
 
 
- Build robust, high-performance, and resilient back-end systems to support diverse product requirements.
 
 
 Responsibilities  
- Collaborate with product teams to understand business requirements and estimate development efforts.
 
 
- Write clean, efficient, transparent, and well-documented code that adheres to industry standards.
 
 
- Build and maintain back-end components of large-scale web applications.
 
 
- Ensure compliance with privacy, data security, and industry best practices.
 
 
- Stay updated with emerging technologies and trends in Node.js development.
 
 
- Develop integrations with Google Analytics and other third-party services.
 
 
- Participate in design discussions and conduct code reviews to ensure quality and scalability.
 
 
 Required Skills & Qualifications  
- Bachelor’s degree in Computer Science, Engineering, or related field (exceptional coding performance on platforms like LeetCode/HackerRank can substitute).
 
 
- Minimum 2 years of experience  developing and maintaining high-performance backend systems with Node.js .
 
 
- Expertise with NestJS  or Express.js  frameworks.
 
 
- Strong knowledge of data structures, algorithms, and software design principles.
 
 
- Proficiency in JavaScript  and TypeScript .
 
 
- Deep understanding of RESTful APIs , web, and networking protocols.
 
 
- Hands-on experience with SQL  and NoSQL  databases.
 
 
- Exposure to Kafka, Redis, and Elasticsearch .
 
 
- Solid understanding of Git/version control workflows.
 
 
- Knowledge of microservices architecture  and DevOps principles .
 
 
- Excellent problem-solving, debugging, and collaboration skills.
 
 
 Preferred Skills & Qualifications  
- Experience with display, mobile, or video advertising platforms .
 
 
- Familiarity with customer data systems, marketing platforms, and AdTech ecosystems .