Senior Java & Cybersecurity Engineer - AI-Driven Crypto

American Express; Phoenix (AZ); On-site; USD 123,000 - 215,000; Full time

Job summary

American Express in Phoenix, AZ is seeking a Senior Cybersecurity Engineer to design, develop, and modernize secure cryptographic services for AI-enabled engineering and automation. The role focuses on scalable, resilient cryptographic systems and secure communications within our Data Security organization.

You will drive innovations in AI-enabled security workflows, cryptographic key management, and incident-free operations while collaborating with cross-functional teams in a highly regulated

Qualifications

• Bachelor’s degree in Computer Science, Computer Engineering, Software Engineering, or equivalent practical experience.
• 7+ years of professional software development experience.
• 2+ years leading software developers, including technical mentoring and design guidance.
• 5+ years of experience within Financial Services or another highly regulated industry.
• 5+ years building APIs, microservices, or backend applications using Java, Python, Go, JavaScript/TypeScript, or similar languages.
• 5+ years developing or consuming REST and/or SOAP services.
• 2+ years hands-on experience with GCP, AWS, Azure, or private/hybrid cloud platforms.
• 2+ years experience with Kubernetes, Docker, containerization, service mesh, or related cloud-native technologies.
• 2+ years developing solutions involving PKI, cryptography, encryption, tokenization, digital certificates, or cryptographic key management.
• 2+ years experience with HashiCorp Vault, KMS, HSM, or comparable secrets/key management technologies.
• Hands-on experience integrating LLMs or Generative AI into applications, software engineering workflows, or operational automation.
• Hands-on experience with AI agents, Retrieval-Augmented Generation (RAG), LLM APIs, prompt engineering, agentic workflows, or similar Generative AI patterns.
• Experience applying AI to engineering and operational use cases such as incident detection, root-cause analysis, vulnerability remediation, observability, automated remediation, or recovery.
• Deep understanding of PKI architecture, certificate lifecycle management, cryptographic key lifecycle management, TLS/mTLS, encryption, digital signatures, and secure communication protocols.
• Experience designing highly available enterprise PKI or cryptographic services.
• Experience integrating applications with HSMs, enterprise PKI, HashiCorp Vault, cloud KMS, and certificate management platforms.
• Strong understanding of API security, OAuth/OIDC, authentication, and authorization.
• Experience with DevSecOps, CI/CD, automated security testing, observability, and infrastructure automation.
• Understanding of security, privacy, access control, and responsible AI considerations for enterprise AI solutions.

Responsibilities

• Design, develop, and modernize secure, scalable, and resilient cryptographic services, accelerating AI-enabled engineering and intelligent automation.
• Apply Generative AI and AI-based automation across engineering and operational workflows to improve developer productivity.
• Automate vulnerability remediation to reduce time-to-fix and reliance on manual work.
• Proactively identify and remediate issues while reducing manual intervention.
• Advance the organization’s journey toward incident-free operations through improved automation and operational workflows.

Skills

Software leadership

APIs & backend

Cloud platforms

Kubernetes & Docker

PKI & crypto

AI & Generative AI

LLMs integration

Security & API security

DevSecOps

OAuth/OIDC

Education

Bachelor’s degree

Tools

HashiCorp Vault

KMS

HSM

TLS

OAuth/OIDC

Job description

American Express in Phoenix, AZ is seeking a Senior Cybersecurity Engineer to design, develop, and modernize secure cryptographic services for AI-enabled engineering and automation. The role focuses on scalable, resilient cryptographic systems and secure communications within our Data Security organization.

You will drive innovations in AI-enabled security workflows, cryptographic key management, and incident-free operations while collaborating with cross-functional teams in a highly regulated