Senior NodeJS Backend Engineer at eBay

Bengaluru, Karnataka, India

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Not SpecifiedCompensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

E-commerce, Marketing TechnologyIndustries

Requirements

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related technical discipline
6+ years of experience in backend development with a focus on Node.js and JavaScript/TypeScript
Expertise in building and consuming RESTful and GraphQL APIs
Strong proficiency in relational and NoSQL databases (e.g., PostgreSQL, MongoDB)
Experience with cloud-native development on AWS, GCP, or Azure
Hands-on experience integrating with LLMs (e.g., GPT, Claude), embedding models, vector databases (e.g., Pinecone, Weaviate, FAISS), and prompt engineering techniques
Solid understanding of agent frameworks, tools, and design patterns for autonomous AI behavior
Knowledge of API authentication, authorization (OAuth, JWT), and security best practices
Preferred
Experience with LangChain, LangGraph, Semantic Kernel, or similar orchestration frameworks
Familiarity with front-end frameworks (React, Vue)
Knowledge of event-driven architectures and message queues (e.g., Kafka, RabbitMQ)
Experience with containerization

Responsibilities

Design, develop, and maintain high-performance, scalable Node.js services for real-time AI-driven applications
Implement systems that interact with AI models and services such as OpenAI (GPT), Anthropic (Claude), and others
Apply agent design patterns and leverage frameworks like LangGraph and LangChain to orchestrate multi-step workflows and reasoning tasks
Develop robust prompt interfaces, retrieval-augmented generation pipelines, and context-aware query structures
Design and implement context-aware AI services leveraging the Model Context Protocol for effective orchestration and input management
Architect distributed systems that are secure, fault-tolerant, and horizontally scalable
Work with data scientists, product managers, and fellow engineers to translate requirements into technical deliverables
Implement unit tests, integration tests, and maintain CI/CD pipelines for deployment and automation
Contribute to technical documentation, system diagrams, and design specifications
Participate in peer reviews and provide guidance to junior developers

Skills

Key technologies and capabilities for this role

Node.jsAPIsLLMsOpenAIAnthropicLangGraphLangChainPrompt EngineeringRAGAgent Frameworks

Questions & Answers

Common questions about this position

What is the salary for this Senior NodeJS Backend Engineer position?

This information is not specified in the job description.

Is this a remote position or what is the location requirement?

This information is not specified in the job description.

What skills and experience are required for this role?

Candidates need 6+ years of experience, a Bachelor’s or Master’s degree in Computer Science or related field, strong background in scalable Node.js web services, and expertise in AI integration including LLMs like OpenAI GPT and Anthropic Claude, agent frameworks like LangGraph and LangChain, prompt engineering, RAG, and system design for distributed systems.

What is the team and company culture like at eBay?

eBay fosters a culture where customers are the compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work; the Marketing Technologies Platform Team powers billions of customer interactions daily with passionate thinkers, innovators, and dreamers building intelligent AI communication systems.

What makes a strong candidate for this Senior NodeJS Backend Engineer role?

A strong candidate has 6+ years of experience in Node.js backend development, expertise in AI technologies like LLMs, agent frameworks, prompt engineering, RAG, and designing scalable distributed systems, plus a relevant degree and passion for AI applications.

eBay

Global online marketplace for buying and selling

About eBay

eBay is an online marketplace where individuals and businesses can buy and sell a wide range of products, including electronics, fashion, and collectibles. Users can list items for auction or use the 'Buy It Now' option for immediate purchases. eBay stands out from competitors with its vast selection, user-friendly interface, and strong buyer and seller protections, including free shipping on many items. The company's goal is to facilitate seamless transactions while generating revenue through transaction fees, advertising, and subscription services.

San Jose, CaliforniaHeadquarters

1995Year Founded

$6.5MTotal Funding

IPOCompany Stage

Consumer Software, Consumer GoodsIndustries

10,001+Employees

Benefits

Health Insurance

401(k) Company Match

Paid Vacation

Parental Leave

Risks

Niche e-commerce platforms like StockX and Poshmark may draw away eBay's customers.

Social media platforms with shopping features could divert traffic from eBay.

Direct-to-consumer brands bypassing marketplaces may reduce eBay's seller base.

Differentiation

eBay offers a unique auction-style listing alongside 'Buy It Now' options.

The platform provides robust buyer and seller protections, enhancing trust in transactions.

eBay's vast product selection includes new, refurbished, and second-hand items.

Upsides

eBay's acquisition of GSI Commerce strengthens its position as a global commerce partner.

The rise of social commerce offers eBay opportunities to integrate social shopping features.

Increased focus on sustainability aligns with eBay's refurbished and second-hand product categories.

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