Senior Identity & API Integration Engineer

First Soft Solutions LLC; New York (NY); Hybrid; USD 140,000 - 190,000; Full time

Job summary

First Soft Solutions LLC is seeking a Senior IAM & Integration Engineer to design and build secure identity and integration solutions for enterprise applications. The role focuses on authentication, authorization, identity management, API integrations, and secure connectivity across enterprise systems.

You will collaborate with Cybersecurity and IAM teams, implement OAuth 2.0 / OpenID Connect, manage tokens, and develop scalable integrations with SaaS and on‑prem apps.

Qualifications

• Experience with IAM and identity security.
• Hands-on experience with OAuth 2.0 and OpenID Connect.
• Experience with Okta or Microsoft Entra ID.
• Strong API integration and software engineering experience.

Responsibilities

• Design and implement authentication and authorization solutions.
• Build identity services using OAuth 2.0 and OpenID Connect.
• Support application registration, identity provisioning, and access management.
• Develop integrations with enterprise and SaaS platforms.
• Build and maintain secure APIs and reusable integration services.
• Implement machine-to-machine authentication and token management.
• Work with Cybersecurity and IAM teams to ensure secure access controls.
• Troubleshoot identity, authentication, and integration issues.

Skills

IAM security

OAuth 2.0

OpenID Connect

Okta Entra ID

API integration

Software engineering

Token management

Access controls

Job description

First Soft Solutions LLC is seeking a Senior IAM & Integration Engineer to design and build secure identity and integration solutions for enterprise applications. The role focuses on authentication, authorization, identity management, API integrations, and secure connectivity across enterprise systems.

You will collaborate with Cybersecurity and IAM teams, implement OAuth 2.0 / OpenID Connect, manage tokens, and develop scalable integrations with SaaS and on‑prem apps.