Sr. Gen AI Engineer

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  • Woongjin, Inc
  • Ridgefield Park, NJ
  • Contract
  • 2 weeks ago
  • $110,000 - $130,000
Woongjin, Inc
Published
April 24, 2026
Location
Ridgefield Park, NJ
Category
Job Type

Sr. Gen AI Engineer: our view in 3 lines...

  • The Role: A senior generative AI engineer role for building and productionizing LLM-powered systems and agentic workflows. The person will design generative model algorithms, develop LLM applications and RAG pipelines, integrate model providers, deploy scalable AI services, and build monitoring and evaluation frameworks for production systems.
  • Requirements: Required skills include Python, experience with Generative AI / LLM-based systems in production, RAG and prompt engineering, and use of orchestration frameworks like LangChain, LlamaIndex, or Semantic Kernel. The role also expects experience with vector databases such as Pinecone, Weaviate, Chroma, FAISS, or Elasticsearch and cloud platforms AWS, GCP, or Azure plus Docker, Kubernetes, and CI/CD.

Job Description

Company Description

For More Open Positions Visit us at:
http://recruiting.woongjininc.com/

Our Mission

WOONGJIN, Inc. is a rapidly growing team who provides a range of unique, exceptional, and enhanced services to our clients. We have a strong moral code that includes the service of goodness without expectations of reward. We are motivated by the sense of responsibility and servant leadership.

Benefits

  • Medical Insurance
  • Vision Insurance
  • Dental Insurance
  • 401(k)
  • Paid Sick hours

Job Description

  • Design and develop algorithms for generative models using deep learning techniques
  • Design and build LLM-powered applications for internal and/or customer-facing use cases
  • Develop and productionize RAG pipelines using enterprise data sources, vector databases, and retrieval systems
  • Build and optimize AI agents / agentic workflows for task automation, reasoning, and orchestration
  • Integrate model providers such as OpenAI, Anthropic, Azure OpenAI, AWS Bedrock, and open-source models where appropriate
  • Create robust evaluation frameworks for response quality, factuality, latency, safety, and reliability
  • Implement prompt engineering, structured outputs, tool calling, and model optimization strategies
  • Deploy scalable AI services to cloud environments using modern software engineering and MLOps practices
  • Build monitoring, observability, and feedback loops for model and application performance in production
  • Establish and maintain guardrails, responsible AI practices, and security controls for enterprise AI systems
  • Collaborate with product managers, designers, and business stakeholders to identify high-impact AI opportunities
  • Mentor other engineers and contribute to architecture, technical direction, and engineering best practices

Qualifications

Required Qualifications

  • Bachelor’s degree in Computer Science, Engineering, Machine Learning, or a related field
  • 5+ years of software engineering, machine/deep learning engineering, or applied AI experience
  • 2+ years of hands-on experience building and deploying Generative AI / LLM-based systems in production
  • Strong programming skills in Python and experience with backend/API development
  • Experience with LLM application development, including prompt engineering, RAG, tool use, and structured output design
  • Experience in optimizing RAG pipelines using both structured and unstructured data
  • Experience with orchestration frameworks such as LangChain, LlamaIndex, Semantic Kernel, or equivalent
  • Experience in generative AI techniques such as GANs, and VAEs
  • Hands-on experience with vector databases / retrieval systems such as Pinecone, Weaviate, Chroma, FAISS, Elasticsearch, or Azure AI Search
  • Experience with cloud platforms such as AWS, GCP, or Azure
  • Experience with Docker, Kubernetes, CI/CD, and production deployment practices
  • Strong understanding of software architecture, scalability, reliability, and distributed systems
  • Experience building evaluation, testing, and monitoring for AI systems
  • Strong communication skills and ability to work closely with technical and non-technical stakeholder

 

Preferred Qualifications

  • Experience fine-tuning or adapting open-source LLMs
  • Advanced knowledge of natural language processing for text generation tasks
  • Experience with PyTorch, TensorFlow, JAX, or related ML frameworks
  • Experience with MLOps tools such as MLflow, SageMaker, Vertex AI, Azure ML, Kubeflow, or similar
  • Experience building multi-agent systems or advanced orchestration workflows
  • Experience with AI safety, guardrails, red-teaming, privacy, and governance
  • Familiarity with search, ranking, recommendation, conversational AI, or enterprise knowledge systems
  • Experience in customer-facing or enterprise SaaS products
  • Experience in semiconductor/manufacturing, retail and e-commerce sectors

 

What Success Looks Like

  • Deliver production-ready GenAI features that improve user experience and business outcomes
  • Build reliable and scalable AI systems with strong quality, latency, and cost performance
  • Establish best practices for evaluation, observability, and responsible AI development
  • Help define the company’s long-term Generative AI architecture and roadma

     

Additional Information

All your information will be kept confidential according to EEO guidelines.

 *** NO C2C ***

  • Compensation: USD 110000 - USD 130000 - yearly
  • Key Skills
    ? Key Skills in dark blue have been inferred based on similar industry roles
    LLM Application Development RAG Pipelines Vector Databases (FAISS Pinecone Chroma Weaviate) Docker Cloud Platforms (aws/gcp/azure) Langchain / Llamaindex / Semantic Kernel Azure Python Elasticsearch AWS Kubernetes CI/CD

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