Senior Security Engineer - AI

Do you want your voice heard and your actions to count?

Discover your opportunity with Mitsubishi UFJ Financial Group (MUFG), one of the world’s leading financial groups. Across the globe, we’re 150,000 colleagues, striving to make a difference for every client, organization, and community we serve. We stand for our values, building long‑term relationships, serving society, and fostering shared and sustainable growth for a better world.

With a vision to be the world’s most trusted financial group, it’s part of our culture to put people first, listen to new and diverse ideas and collaborate toward greater innovation, speed and agility. This means investing in talent, technologies, and tools that empower you to own your career.

Join MUFG, where being inspired is expected and making a meaningful impact is rewarded.

The selected colleague will work at an MUFG office or client sites four days per week and work remotely one day. A member of our recruitment team will provide more details.

MUFG is seeking a highly motivated Security Engineer to design, develop, and deploy autonomous agents that eliminate manual overhead and drive intelligent decision‑making across the organization while ensuring proper guardrails and security controls are implemented.

• Agentic Workflow Design:
  Build and maintain AI agents capable of multi‑step reasoning and tool‑use to automate cyber security use cases such as Autonomous Incident Investigation, vulnerability prioritization.
• Advanced Prompt Engineering:
  Design high‑precision, version‑controlled prompts with the ability to programmatically optimize LLM outputs for reliable security logic and automated remediation scripts.
• Use and fine‑tune machine learning models (e.g., Deep Learning, K‑MEANS, SVM) to identify sophisticated attack patterns that bypass traditional signature‑based defenses.
• LLM Integration:
  Integrate large language models (OpenAI, Anthropic, or open‑source models) into production environments via APIs or local deployments.
• Data Pipeline Orchestration:
  Develop and optimize data ingestion pipelines, specifically focusing on vector databases.
• Process Mapping & Optimization:
  Audit existing manual workflows and re‑engineer them using a "Machine‑First" mindset, utilizing LLMs to handle unstructured data.
• Infrastructure & MLOps:
  Deploy and monitor AI solutions using cloud‑native tools, ensuring high availability, low latency, and cost‑efficiency.
• Safety & Compliance:
  Implement guardrails for AI outputs to ensure ethical standards, data privacy, and "Human‑in‑the‑loop" checkpoints where necessary.

• Expert‑level in Python with hands‑on experience in data ingestion, cleaning, and machine learning libraries (Scikit‑Learn, PyTorch, system and web‑based integrations).
• AI Frameworks:
  Proficiency with Lang Chain, CrewAI, or AutoGPT for agent orchestration.
• Machine Learning:
  Hands‑on experience using and tuning machine learning models for a wide range of cyber security use cases.
• Hands‑on experience with at least one cloud AI solution (AWS Bedrock/Sage Maker, Azure AI).
• Dev Ops:
  Docker, Kubernetes, and Git for version control and deployment.
• Deep experience with RESTful and Graph
  
  QL APIs to connect disparate systems.

• Bachelor's or Master’s degree in Cybersecurity, Computer Science, Artificial Intelligence, or related field, or relevant industry certifications. Equivalent work experience is equally preferable.

• GIAC Machine Learning Engineer
• AWS Certified Machine Learning Engineer
• Microsoft Certified:
  Azure AI Engineer Associate
• Certified Information Systems Security Professional (CISSP)

Visa sponsorship/support is based on business needs. We do not anticipate providing visa sponsorship/support for this position.

The typical base pay range for this role is as follows:

• New York / New Jersey: $140k – $203k
• Non‑New York/ New Jersey: $140k – 185k

Depending on job‑related knowledge, skills, experience and location. This role may also be eligible for certain discretionary performance‑based bonus and/or incentive compensation. Additionally, our Total Rewards program provides colleagues with a competitive benefits package (in…