Sr. Gen AI Engineer

Job Summary

Sr. Gen AI Engineer – contractor role, over 6‑month engagement. Competitive pay rate. Requires strong Python skills, LLM application development, and cloud platform experience. Bachelor’s degree and 5+ years of relevant experience required.

Ridgefield Park, NJ, United States

• 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 product ionise RAG pipelines using enterprise data sources, vector databases, and retrieval systems.
• Build and optimise 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 optimisation 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.

• 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 optimizing RAG pipelines using both structured and unstructured data.
• Experience with orchestration frameworks such as Lang Chain, Llama Index, 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 stakeholders.

• Experience fine‑tuning or adapting open‑source LLMs.
• Advanced knowledge of natural language processing for text generation tasks.
• Experience with PyTorch, Tensor Flow, JAX, or related ML frameworks.
• Experience with MLOps tools such as MLflow, Sage Maker, 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.

• 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 roadmap.

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

WOONGJIN, Inc. is a rapidly growing team that 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.

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

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• NO C2C•••