Junior Security Engineer: Build Secure AI Systems

EngineersOfAI; Germany (OH); On-site; USD 60,000 - 90,000; Full time

Job summary

Helsing is seeking a Junior Security Engineer to join our defence AI team. You will work across cloud infrastructure, applications, identity systems and products to identify and reduce security risks from day one, under mentorship.

You will learn secure-by-default practices, collaborate with senior engineers on threat modelling and security reviews, and contribute to automated tooling, testing, and incident response as you grow.

Qualifications

• You should apply if you have built non-trivial software—projects that demonstrate genuine engineering ability, not just framework usage (e.g. security tools, automation pipelines, network utilities, infrastructure-as-code, compilers, or embedded systems)

Responsibilities

• Work alongside senior security engineers on threat modelling and security reviews - learning to identify architectural risks, trust boundary issues, and failure modes
• Build and improve security tooling and automation - writing code that reduces manual security work and embeds secure-by-default practices into engineering workflows
• Contribute to security testing across our systems and products, including hands-on technical testing under supervision
• Own well-defined security workstreams, progressively taking on more scope and autonomy as your skills develop
• Observe and learn from security incidents through ride-alongs with experienced engineers, progressing to hands-on incident response roles as you develop and gain the required access
• Help maintain and improve our security documentation, runbooks, and internal guidance
• Support assurance activities such as audits and certifications alongside experienced team members

Skills

Software development

Security tooling

Threat modelling

Job description

Helsing is seeking a Junior Security Engineer to join our defence AI team. You will work across cloud infrastructure, applications, identity systems and products to identify and reduce security risks from day one, under mentorship.

You will learn secure-by-default practices, collaborate with senior engineers on threat modelling and security reviews, and contribute to automated tooling, testing, and incident response as you grow.