Senior API & Microservices Architect (Hybrid)

Citi; Irving (TX); Hybrid; USD 126,000 - 189,000; Full time

Benefits offered by this job

Medical, dental & vision coverage

401(k)

Life, accident & disability insurance

Wellness programs

Paid time off

Job summary

Citi is seeking a Lead API & Microservice Integration Engineer to architect and deliver a robust API-first backbone for AI automation within the FDE team in Consumer Operations Technology. You will own backend integration, security, and observability across OpenShift/Kubernetes environments, collaborating with AI and UI engineers to power Citi's AI platforms.

The role requires senior-level expertise in Java and microservices, with hands-on experience in API governance, cloud-native patterns,

Qualifications

• Expert-level Java (6+) with Spring Boot, Spring Cloud, Spring Security and WebFlux for reactive microservices.
• API governance with contract-first design (OpenAPI/Swagger) and lifecycle management.
• Hands-on with Kafka or IBM MQ and enterprise integration patterns.

Responsibilities

• Define API-first strategy and governance across environments.
• Design and deliver production-grade Java Spring Boot microservices with resilient patterns.
• Lead integration with Citi data platforms, identity/auth services, and external providers.
• Expose LLM inference endpoints and AI pipelines as enterprise-grade services.
• Implement security-by-design: mTLS, OAuth2/JWT, Vault and GDPR compliance.
• Build observability: OpenTelemetry, Prometheus, Grafana; lead load testing and performance optimization.
• Collaborate with DevOps to define CI/CD pipelines and Helm/Kubernetes manifests.

Skills

Java

Spring Boot

Spring Cloud

WebFlux

API Design

OpenAPI

OAuth2/OIDC

Kafka

IBM MQ

OpenShift

Kubernetes

CI/CD

DevSecOps

Observability

Tools

Docker

OpenShift

Kubernetes

Jenkins

Terraform

Job description

Citi is seeking a Lead API & Microservice Integration Engineer to architect and deliver a robust API-first backbone for AI automation within the FDE team in Consumer Operations Technology. You will own backend integration, security, and observability across OpenShift/Kubernetes environments, collaborating with AI and UI engineers to power Citi's AI platforms.

The role requires senior-level expertise in Java and microservices, with hands-on experience in API governance, cloud-native patterns,