Senior Software Engineer – Identity Engineering, SSO

Jobtailor; Missouri; On-site; USD 110,000 - 140,000; Full time

Job summary

Jobtailor is seeking a senior backend engineer in the US Midwest to design and build secure SSO and identity-broker services. You will create scalable REST APIs and integrate with federation protocols such as SAML, OpenID Connect, and OAuth 2.0.

The role emphasizes automated testing, ADRs, and cross-team collaboration to deliver reliable software. You will own complex components from design through testing, while using AI-assisted tools to accelerate delivery and maintainability.

Qualifications

• Bachelor’s degree or higher with substantial backend/software engineering experience.
• Experience building enterprise/server-side APIs in Python.
• Strong design skills for distributed systems and tradeoff communication.
• Proven automated testing and modern software development practices.
• Experience with AI-assisted development tools in day-to-day engineering.
• Experience with spec-driven development practices.
• Experience building REST APIs using OpenAPI and code-generation workflows.
• Knowledge of identity protocols such as SAML, OpenID Connect, OAuth 2.0, SCIM, WS-Federation.

Responsibilities

• Design and develop secure, scalable SSO and identity-broker services using Python.
• Build APIs and platform capabilities for authentication, federation, and integration across products.
• Own complex components from design through testing and delivery.
• Evaluate security, scalability, performance, and extensibility tradeoffs.
• Document major technical decisions with designs and ADRs.
• Turn ambiguous requirements into technical specs and incremental plans.
• Leverage AI-assisted tools across the development lifecycle.
• Validate security and correctness through automated testing and reviews.
• Deliver high-quality software with robust development practices.
• Collaborate with engineering, product, and architecture teams on cross-product integration.
• Strengthen engineering practices across the squad.

Skills

Python Development

REST API Design

OpenAPI Specifications

Asynchronous Python

Event-Driven Architecture

SQL

Redis

AI-Assisted Development Tools

Identity Protocols

SAML

OpenID Connect

OAuth 2.0

SCIM

WS-Federation

Architecture Decision Records

AWS

React

TypeScript

Technical Documentation

Education

Bachelor’s degree with 7+ years of related experience

Master’s degree with 4+ years of related experience

PhD with 1+ years of related experience

Tools

AWS

Redis

SQL

React

TypeScript

Job description

• Design and develop secure, scalable SSO and identity-broker services using Python


• Build APIs and platform capabilities supporting authentication, federation, identity orchestration, and integration across Cisco products


• Own complex software components from design through implementation, testing, and delivery


• Evaluate security, scalability, performance, and extensibility tradeoffs


• Document significant technical decisions through technical designs and Architecture Decision Records


• Turn ambiguous requirements into technical specifications, acceptance criteria, and incremental implementation plans


• Use AI-assisted development tools throughout the software development lifecycle


• Independently validate the security, correctness, and maintainability of resulting software


• Deliver high-quality software through automated testing, code reviews, and sound development practices


• Collaborate with engineering, product, and architecture partners on cross-product integration challenges


• Strengthen engineering practices across the squad

Requirements

• Bachelor’s degree with 7+ years of related experience, master’s degree with 4+ years of related experience, or PhD with 1+ years of related experience


• Professional experience building enterprise or customer-facing backend services and APIs using Python


• Experience designing components within distributed systems and communicating technical decisions and tradeoffs


• Experience delivering quality software through automated testing and modern software development practices


• Experience using AI-assisted development tools in day-to-day software engineering while validating security, correctness, and maintainability


• Experience with spec-driven development practices


• Experience building REST APIs using OpenAPI specifications and related code-generation workflows


• Knowledge of identity and federation protocols such as SAML, OpenID Connect, OAuth 2.0, SCIM, or WS-Federation


• Experience with AWS, SQL, Redis, asynchronous Python, or event-driven architectures


• Experience with React and TypeScript


• Experience writing technical specifications, design documents, or Architecture Decision Records

Core Competencies

Demonstrates expertise in designing and developing secure, scalable SSO and identity-broker services using Python, with a strong focus on building REST APIs and ensuring software quality through automated testing and modern development practices.

Highest-signal resume keywords

• Python Development


• REST API Design


• Automated Testing


• Identity Protocols


• AWS Experience

ATS Optimization Keywords

Hard Skills

• Python


• REST APIs


• OpenAPI Specifications


• Asynchronous Python


• Event-Driven Architecture


• SQL


• Redis


• AI-Assisted Development Tools


• Spec-Driven Development


• Technical Documentation

Soft Skills

• Collaboration


• Communication


• Problem-Solving

Industry Keywords

• SSO


• Identity Federation


• SAML


• OpenID Connect


• OAuth 2.0


• SCIM


• WS-Federation


• Architecture Decision Records

Tools & Technologies

• AWS


• Redis


• SQL


• React


• TypeScript