Senior Software Engineer – IAM, Zero Trust

SysEleven GmbH

. Design, develop, and operate scalable core services .

Posted 11/11/2026full-timeRemote • GermanySeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive software development experience with Python, Go, or Rust, and expertise in designing Zero Trust architectures. Proficient in integrating identity and access management systems and optimizing cloud infrastructure, particularly with Cloudflare and the CNCF ecosystem.

Highest-signal resume keywords

Python DevelopmentZero Trust Architecture DesignIdentity Access Management SystemsCloudflare Infrastructure ManagementCNCF Cloud-Native Ecosystem

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software DevelopmentFastAPI FrameworkDockerKubernetesPostgreSQLSQLiteTCP/IPUnit TestingFunctional TestingIntegration Testing

Soft Skills

Technical GuidanceMentoringCollaboration

Tools & Technologies

GitLab CI/CDOpenAPIGRPCKeycloakOpenStack KeystoneOpenFGAGoogle Zanzibar

Industry Keywords

Cloud InfrastructureEdge InfrastructureCDN OperationsHigh-Security EnvironmentBusiness-Fluent English

Tech Stack

Tools & technologies

CloudDockerGRPCKubernetesOpenStackPostgresPythonRustSQLiteTCP/IPGo

About the role

Key responsibilities & impact

Design, develop, and operate scalable core services
Provide secure RESTful, OpenAPI, and gRPC APIs in edge and Zero Trust environments
Design the architecture and continuously evolve identity and access management systems
Integrate IAM systems into the secunet cloud ecosystem
Manage and optimize the Cloudflare infrastructure, including CDN operations and traffic management
Implement and optimize automated GitLab CI/CD pipelines
Ensure high standards of code quality and security
Coordinate technically with Product Owners, architects, and specialist departments
Translate business requirements into resilient software architectures
Provide technical guidance and mentoring to junior engineers
Participate in on-call rotations to support highly available systems
Help shape the technology roadmap and open-source strategy in a high-security environment

Requirements

What you’ll need

Extensive hands-on software development experience with Python, Go, or Rust
Expertise in widely used frameworks, particularly FastAPI
Several years of professional experience designing Zero Trust architectures
Strong knowledge of identity providers, including Keycloak, OpenStack Keystone, OpenFGA, or Google Zanzibar
Practical experience integrating and operating edge infrastructures and CDNs, particularly Cloudflare
In-depth expertise in the CNCF cloud-native ecosystem, including Docker and Kubernetes
Solid understanding of TCP/IP and database architectures using PostgreSQL and SQLite
Knowledge of system architecture, data modeling, and unit, functional, and integration testing
Business-fluent English skills at B2 level or above
Must be resident in Germany
Willingness to participate in on-call rotations

Benefits

Comp & perks

On-call rotations are compensated separately
100% remote work possible
Continuous knowledge sharing and collaborative code reviews
Freedom to make architectural decisions independently
Opportunity to bring state-of-the-art technologies directly into production
Opportunity to help shape the technology roadmap and open-source strategy
Trusting and diverse work environment