Senior AppSec Architect for Secure, Hybrid Architectures

Billennium; Warszawa; On-site; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Udemy for Business

Private medical care

Multisport card

Veterinary package

Language lessons

Shopping vouchers

Career growth

Global collaboration

Innovative environment

Team-building events

Welcome pack

Job summary

Billennium, a global technology company with over 20 years of experience, is seeking a Senior Security Architect in Warszawa to design and assess secure IT architectures across applications, APIs, integrations and on-premise or hybrid environments. You will act as a Security SME, translating risks into concrete requirements and ensuring secure-by-design practices.

The role combines hands-on security assessments, architecture reviews and collaboration with Architects, Developers, DevOps and cloud

Qualifications

• 5+ years of cybersecurity experience, including security architecture and/or AppSec.
• Experience conducting security architecture reviews, assessments and threat modeling.
• Strong knowledge of web application, API and integration security.
• Data protection, encryption and secrets management.
• Knowledge of OWASP Top 10, OWASP ASVS, OWASP API Security Top 10, NIST SSDF, CWE Top 25.
• Ability to analyze solution architecture diagrams, data flows, trust boundaries and communication between components.
• Strong understanding of identity, access management and network/system segmentation risks.
• Ability to translate security risks into technical requirements and actionable recommendations.
• Experience working with stakeholders and influencing security decisions.
• Fluent Polish and at least B2 English; both written and spoken.

Responsibilities

• Design and review secure architectures for new and evolving IT solutions.
• Conduct technical security assessments, architecture reviews and threat modeling for applications, APIs, integrations and system solutions.
• Act as a Security SME within business and technology projects from concept through implementation.
• Provide security guidance during design of new features, applications and systems.
• Assess authentication, authorization, data protection, encryption, secrets management and inter-component communication.
• Analyze architecture diagrams, data flows and trust boundaries to identify security risks.
• Evaluate risks related to identity, access, segmentation and integration between systems.
• Translate security risks into specific technical security requirements, controls and recommendations.
• Collaborate with Solution/Enterprise Architects, Developers, DevOps, Cloud and Infrastructure teams, Product Owners and System Owners.
• Support teams in implementing security controls and ensure security requirements are considered throughout the lifecycle.
• Contribute to security standards, architectural principles and technical guardrails.
• Share security knowledge and promote secure-by-design practices across technology teams.

Skills

AppSec

Security Architecture

Threat modeling

API security

Web security

Identity & access management

Data protection

Encryption

Secrets management

OWASP Top 10

OWASP ASVS

OWASP API Security Top 10

NIST SSDF

CWE Top 25

Stakeholder influence

Kubernetes

Tools

Kubernetes

Job description

Billennium, a global technology company with over 20 years of experience, is seeking a Senior Security Architect in Warszawa to design and assess secure IT architectures across applications, APIs, integrations and on-premise or hybrid environments. You will act as a Security SME, translating risks into concrete requirements and ensuring secure-by-design practices.

The role combines hands-on security assessments, architecture reviews and collaboration with Architects, Developers, DevOps and cloud