Full-Time

Senior Gen AI Engineer

Woongjin

Woongjin

51-200 employees

ERP, cloud, SAP, and IT staffing

Compensation Overview

$110k - $130k/yr

Moonachie, NJ, USA

In Person

Category
AI & Machine Learning (2)
,
Required Skills
LLM
Kubernetes
MLOps
Pinecone
Microsoft Azure
Python
OpenAI
Docker
RAG
AWS
Elasticsearch
REST APIs
LangChain
Google Cloud Platform
Requirements
  • 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
Responsibilities
  • 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
Desired 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: Deliv
  • What Success Looks Like: Build reliable and scalable AI systems with strong quality, latency, and cost performance
  • What Success Looks Like: Establish best practices for evaluation, observability, and responsible AI development
  • What Success Looks Like: Help define the company’s long-term Generative AI architecture and roadma

Woongjin Inc. helps US businesses modernize their technology and staffing. It offers ERP and cloud services, with SAP S/4HANA and SAP Business One implementations as an SAP Gold Partner, plus Microsoft Dynamics 365 and AWS cloud capabilities. It also sells its own WRMS Rental Management System for managing sales, logistics, assets, and services for rental companies, and has expanded into digital mobility solutions for car dealerships. Beyond tech consulting, it runs a bilingual IT, finance, logistics, and admin staffing division that places Korean/English speakers in US companies. Its goal is to accelerate digital transformation for corporate clients while growing its US rental and IT services market, and exploring a potential spin-off of its IT division.

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

Buena Park, California

Founded

N/A

Simplify Jobs

Simplify's Take

What believers are saying

  • AWS incentives boost Woongjin's manufacturing managed services March 2026.
  • Bilingual IT staffing demand surges 25% Q1 2026 from Hyundai Kia EV chains.
  • SAP S/4HANA project accounting enhancements released February 2026.

What critics are saying

  • SAP Rise program bypasses Woongjin, eroding S/4HANA revenue in 6-12 months.
  • Robert Half poaches Woongjin's staffing clients with faster placements in 3-6 months.
  • Parent Group's debt triggers U.S. funding cuts in 18-24 months.

What makes Woongjin unique

  • Woongjin Inc. delivers WRMS rental system from parent Group's expertise.
  • Sole Korean firm integrating mobility platform, SAP ERP, AWS concurrently.
  • Specializes in bilingual Korean-English IT staffing for U.S. automotive clients.

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