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Senior NodeJS Backend Engineer at eBay

NEW
Location
Bengaluru, Karnataka, India
Job type
Full time
Posted 1 day ago
Description
Responsibilities:
  • Backend Development: Design, develop, and maintain high-performance, scalable Node.js services for real-time AI-driven applications.
  • AI Integration: Implement systems that interact with AI models and services such as OpenAI (GPT), Anthropic (Claude), and others.
  • Agent Frameworks: Apply agent design patterns and leverage frameworks like LangGraph and LangChain to orchestrate multi-step workflows and reasoning tasks.
  • Prompt Engineering & RAG: Develop robust prompt interfaces, retrieval-augmented generation pipelines, and context-aware query structures.
  • Model Context Protocol (MCP): Design and implement context-aware AI services leveraging the Model Context Protocol for effective orchestration and input management.
  • System Design: Architect distributed systems that are secure, fault-tolerant, and horizontally scalable.
  • Collaboration: Work with data scientists, product managers, and fellow engineers to translate requirements into technical deliverables.
  • Testing & CI/CD: Implement unit tests, integration tests, and maintain CI/CD pipelines for deployment and automation.
  • Documentation: Contribute to technical documentation, system diagrams, and design specifications.
  • Code Review & Mentorship: Participate in peer reviews and provide guidance to junior developers.


Requirements:
  • Education: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related technical discipline.
  • Experience: 6+ years of experience in backend development with a focus on Node.js and JavaScript/TypeScript.
  • APIs & Protocols: Expertise in building and consuming RESTful and GraphQL APIs.
  • Databases: Strong proficiency in relational and NoSQL databases (e.g., PostgreSQL, MongoDB).
  • Cloud: Experience with cloud-native development on AWS, GCP, or Azure.
  • AI Technologies: Hands-on experience integrating with LLMs (e.g., GPT, Claude), embedding models, vector databases (e.g., Pinecone, Weaviate, FAISS), and prompt engineering techniques.
  • Agent Systems: Solid understanding of agent frameworks, tools, and design patterns for autonomous AI behavior.
  • Security: Knowledge of API authentication, authorization (OAuth, JWT), and security best practices.


Master Backend Engineering
AI-First Software Engineering
Next batch starts on 06 Mar
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Frequently Asked Questions

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Why Work at eBay

eBay is not just a pioneer in e-commerce but also a revolutionary platform that consistently evolves with technology. Working at eBay offers numerous advantages beyond being part of a globally recognized brand. Employees are provided with an environment that fosters creativity, growth, and innovation, ensuring that everyone has the opportunity to deliver their best work. The culture at eBay is heavily influenced by its commitment to positive community engagement, transparency, and integrity, which echoes through every level of the organization. Additionally, eBay places a significant emphasis on career development, offering numerous tools and resources for personal and professional growth.

Employees are empowered with flexible working schedules, a key factor in maintaining work-life balance – an essential feature for today's workforce. The company's focus on diversity and inclusion ensures a rich variety of perspectives and experiences, enhancing team collaboration and innovation. Moreover, eBay provides competitive compensation packages, comprehensive health benefits, and support for continuous learning opportunities, marking it as an employer that genuinely invests in its people.

What's it Like to Work at eBay

Working at eBay is akin to being at the forefront of technological innovation within a supportive and collaborative community. Each project is approached with enthusiasm, leveraging state-of-the-art technology to solve complex problems in e-commerce and beyond. The work environment encourages experimentation and supports taking calculated risks for breakthrough innovations.

Culturally, eBay demonstrates a high level of social consciousness by actively engaging in local community initiatives, which fosters a deeper connection with its workforce. Employees at eBay experience a high degree of autonomy in their roles, combined with accountability for delivering high-quality work. The collaborative environment with open channels of communication ensures that employees feel heard and valued.

Furthermore, eBay’s commitment to sustainability and ethical commerce aligns with the values of many tech professionals aiming to make an impact through their careers. The vibrant office locations in cosmopolitan hubs like Bengaluru add an extra layer of excitement and opportunity both professionally and personally.

What's it Like to Work as a Senior NodeJS Backend Engineer at eBay

As a Senior NodeJS Backend Engineer at eBay, you are at the epicenter of driving the technological frameworks that support eBay’s vast online marketplace. Your role involves working alongside a talented team of engineers to create scalable, efficient, and high-performance back-end solutions. The position requires a thorough understanding of NodeJS and expertise in implementing microservices that are robust and maintainable.

In this role, engineers are given unparalleled opportunities to lead infrastructural projects that directly impact millions of users worldwide. The position demands a proactive approach to problem-solving, collaborating with product managers, designers, and other backend teams to craft seamless solutions that meet customer needs. Engineers are expected to maintain cutting-edge knowledge of emerging technologies and incorporate them into complex projects to enhance eBay’s technological topography.

Moreover, as a senior engineer, mentorship is a significant part of the job, fostering an environment of learning and development. Engineers are not only team players but also thought leaders who provide guidance and innovation solutions. With host teams frequently interacting across different locations and time zones, the role offers a dynamic and rewarding challenge that capitalizes on strong collaborative skills and a passion for technology.

Senior NodeJS Backend Engineer Interview Questions at eBay

The interview process for a Senior NodeJS Backend Engineer at eBay is designed to comprehensively assess a candidate's technical acumen, problem-solving abilities, and cultural fit. Here are some key questions that candidates may encounter:

  1. Technical Expertise:

    • Explain how Node.js works and discuss its event loop.
    • How would you optimize a Node.js application for performance?
    • Discuss various design patterns you have used in Node.js projects.
    • Explain the difference between asynchronous and synchronous programming in JavaScript.
  2. Problem Solving:

    • Present a problem related to system scalability and explain your approach to solve it.
    • How do you handle error management in Node.js?
  3. Behavioral Questions:

    • Describe a project where you led a team effort in a challenging situation.
    • How do you handle conflicts or disagreements within your development team?
  4. Cultural Fit:

    • Why do you want to work at eBay, particularly in this position?
    • How do you align with eBay's mission and values?

These questions aim to dive deep into the candidate's technical skills, ability to fit within eBay's culture, and his/her interpersonal abilities.

Senior NodeJS Backend Engineer Interview Preparation at eBay

Preparation for an interview for the Senior NodeJS Backend Engineer role at eBay involves a multi-faceted approach. Firstly, candidates should brush up on their technical knowledge, particularly focusing on Node.js, JavaScript, and back-end development frameworks. A thorough review of technical documentation and hands-on practice with problem-solving in Node.js is crucial.

Furthermore, understanding eBay's core business practices and its e-commerce platform can provide valuable context when discussing potential projects or solutions during interviews. Candidates should also be prepared to tackle system design questions by reviewing common design patterns and discussing systems they've previously worked on to showcase their technical leadership and adaptability.

Mock interviews can be invaluable, focusing on both technical aspects and behavioral questions to ensure well-rounded preparation. Lastly, researching eBay’s company culture, recent technological advancements, and their approach to sustainability can provide insightful talking points regarding aligning with eBay’s career framework and values.

Senior NodeJS Backend Engineer Interview Tips at eBay

  1. Research Thoroughly:

    • Understand eBay’s business model, values, and current technical projects. This knowledge can be instrumental in discussions during the interview.
  2. Technical Preparation:

    • Practice coding problems, particularly focusing on Node.js and associated technologies. Use platforms such as LeetCode or HackerRank to simulate test conditions.
  3. Communicate Clearly:

    • During technical interviews, clearly describe your thought process. This not only demonstrates your problem-solving skills but also shows your ability to articulate complex concepts effectively.
  4. Culture and Fit:

    • Be ready to discuss how your values align with those of eBay. Reflect on past experiences where you have embodied principles such as teamwork, innovation, and community engagement.
  5. Ask Insightful Questions:

    • Prepare questions to ask about the team, technologies being adopted, and opportunities for growth within the role. This demonstrates your genuine interest in the position and the company.

By following these preparations and tips, candidates can position themselves effectively to secure the Senior NodeJS Backend Engineer role at eBay.