Backend Engineer: API Gateway & IAM (Hybrid, Denver)

Experis Technology Group; Greenwood Village (CO); Hybrid; USD 76,000 - 96,000; Full time

Benefits offered by this job

Medical and Prescription Drug Plans

Dental Plan

Vision Plan

Health Savings Account

Health Flexible Spending Account

Dependent Care Flexible Spending Array

Supplemental Life Insurance

Short Term and Long Term Disability

Business Travel Insurance

401(k) with Match

Weekly Pay

Job summary

Experis Technology Group seeks a Backend Engineer to join a client team in South Denver on a hybrid schedule. You will design and maintain authentication and authorization services and enterprise API Gateway integrations for customer-facing and internal applications.

The role focuses on reducing technical debt and securing backend systems, leveraging OAuth 2.0, OIDC, JWT, SAML, and Spring Boot in modern Java environments.

Qualifications

• 5+ years of professional Java backend development experience.
• Strong experience building RESTful APIs and distributed systems.
• Hands-on experience with authentication and authorization technologies and security protocol implementation.
• Experience with Spring Boot and modern Java frameworks.
• Ability to work independently with minimal supervision.

Responsibilities

• Design, enhance, and maintain authentication and authorization services supporting customer-facing and internal applications.
• Build and secure enterprise API Gateway integrations and backend services, strengthening security controls across the platform.
• Reduce technical debt by improving legacy code, refactoring for quality, and modernizing backend systems for internal business reporting.
• Implement and troubleshoot OAuth 2.0, OpenID Connect (OIDC), JWT, SAML, and related security protocols.
• Leverage AI-assisted development tools to accelerate delivery while maintaining engineering standards and reliability.

Skills

Java Backend Development

RESTful APIs

Distributed Systems

Authentication & Authorization

Spring Boot

Job description

Experis Technology Group seeks a Backend Engineer to join a client team in South Denver on a hybrid schedule. You will design and maintain authentication and authorization services and enterprise API Gateway integrations for customer-facing and internal applications.

The role focuses on reducing technical debt and securing backend systems, leveraging OAuth 2.0, OIDC, JWT, SAML, and Spring Boot in modern Java environments.