Principal Security Engineer (DRI)

Principal Security Engineer (DRI), TaxDome

Format: It’s a fully remote role, we are hiring across European timezones.
Candidates must be based outside Russia and Belarus

About this role
We’re looking for a Principal Security Engineer (DRI) to join our Engineering organization and own application security across TaxDome’s platform during our AI-first engineering transformation. In this role, you’ll define and build the security model for AI-generated software delivery, embed security into product development and release gates, and directly impact product safety, platform resilience, and customer trust.

What you’ll be responsible for
- Own and drive the Application Security workstream as the security DRI across all Domains and Pods.
- Build automated security controls across the delivery loop, including secret scanning, SAST, SCA, IaC, container, dependency, and DAST gates.
- Embed security into product discovery, threat modeling, acceptance criteria, and architecture decisions.
- Define controls for AI-generated code, including dependency risk, tenant isolation, prompt injection, agent misuse, and risky migrations.
- Own the security reviewer AI agent and improve its detection quality, escalation logic, and coverage.
- Partner on incident response, supply chain security, secrets management, and compliance-related technical controls.
- Raise security maturity through practical guidance, reusable rules, and developer education.

What you bring
Must-have
- 7+ years in Application/Product Security, including senior IC ownership at Staff/Principal level or equivalent.
- Experience securing multi-tenant SaaS products handling sensitive or regulated data.
- Strong hands-on background in DevSecOps and CI/CD security automation.
- Practical experience with AI/LLM security risks and controls.
- Ability to review code and work closely with engineering across modern backend/platform stacks.
- Strong written communication in English and Russian, with clear ownership and the ability to influence others.

Nice-to-have
- Experience leading security through major engineering transformations such as AI-first, cloud, microservices, or platform-scale change.
- Background in fintech, tax, payments, or other heavily regulated environments.
- Experience building or operating security-focused AI agents in production.
- Strong AWS/GCP, Kubernetes, and cloud/runtime security expertise.

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