Cyber Security Staff Engineer - Application Security at Solaris | BE, DE | Rezi

Cyber Security Staff Engineer - Application Security at Solaris

Cyber Security Staff Engineer - Application Security

Solaris · BE, DE

5 days ago

Cyber Security Staff Engineer - Application Security

Solaris · BE, DE

5 days ago
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About the Role

Solaris is Europe's leading embedded finance platform, empowering partners to offer compliant, customer-centric banking services. Founded in 2016, Solaris pioneered the Banking-as-a-Service market and is headquartered in Berlin with 300 employees across Europe.

Responsibilities

  • Integrate security seamlessly into the Software Development Lifecycle (SDLC) and DevSecOps pipelines by automating security gates (SAST, DAST, SCA, and container scanning).
  • Conduct thorough threat modeling and architectural security reviews for complex applications, APIs, and microservices prior to deployment.
  • Perform deep-dive manual and automated secure code reviews across various codebases to identify logic flaws and subtle implementation vulnerabilities.
  • Build and maintain "secure-by-default" internal libraries, frameworks, and developer tools to systematically eliminate entire classes of vulnerabilities.
  • Take ownership of the application vulnerability lifecycle, including triaging, validating, and prioritizing vulnerabilities originating from internal testing, penetration tests, and external bug bounty programs.
  • Act as a strategic partner to product and engineering teams, providing pragmatic mitigation guidance that balances product velocity with security assurance.
  • Design and deliver modern, hands-on secure coding training and security awareness initiatives for engineering teams (e.g., addressing OWASP Top 10, LLM/AI security risks).
  • Support incident response and detection teams during application-level security incidents or potential data breaches, leading post-mortem analysis for software flaws.
  • Ensure application security controls remain fully compliant with relevant financial data protection regulations, fintech standards, and internal tech policies.
  • Follow defined Policies & Procedures for the institution, including explicit processes defined for Tech.
  • Take ownership of the tech responsibilities as described in our Change Management Policies.

Requirements

  • A degree in Computer Science, Software Engineering, Information Technology, Cybersecurity, or equivalent professional experience.
  • 6+ years of experience in dedicated Application Security, DevSecOps, or Software Engineering roles with a strong focus on security in high-growth cloud environments (Fintech or highly regulated environment is a plus).
  • Proven experience analyzing and securing code written in our core tech stack/modern languages (e.g., Java, Go, Python, TypeScript, or Rust).
  • Deep understanding of web application vulnerabilities, API security, and exploitation techniques (OWASP Top 10, CWE).
  • Hands-on experience integrating security testing tools into modern CI/CD pipelines (e.g., GitHub Actions, GitLab CI, Jenkins, Snyk, Semgrep).
  • Experience with cloud computing infrastructure (AWS, GCP, or Azure), containerization (Docker), and orchestration (Kubernetes).
  • Experience managing or triaging external penetration testing reports and crowdsourced bug bounty programs.
  • Understands agile workflows and lean principles.
  • Experience by doing threat modeling.
  • Individual Contributor, technical mentorship focus.
  • Business proficient written and spoken English. German is a plus.
  • Ability to translate complex cryptographic or technical security vulnerabilities into business risk for non-technical stakeholders and actionable fixes for developers.
  • Empathic collaborator who builds bridges between security goals and engineering targets, avoiding the "department of No" stereotype.
  • Strong analytical mindset capable of finding creative ways to secure cutting-edge application architectures.
  • Ability to thrive in a fast-paced environment and adapt security strategies to evolving product frameworks.
  • Proactive peer that helps the growth of the team.
  • Curious, constant learner that is willing to share learning with others.

Skills

  • SAST
  • DAST
  • SCA
  • Container scanning
  • Threat modeling
  • Architectural security reviews
  • Secure code reviews
  • Application vulnerability lifecycle management
  • Secure coding training
  • Security awareness initiatives
  • Incident response
  • Detection
  • Post-mortem analysis
  • Application security controls
  • Financial data protection regulations
  • Fintech standards
  • Internal tech policies
  • Change Management Policies
  • Java
  • Go
  • Python
  • TypeScript
  • Rust
  • Web application vulnerabilities
  • API security
  • OWASP Top 10
  • CWE
  • CI/CD pipeline integration
  • GitHub Actions
  • GitLab CI
  • Jenkins
  • Snyk
  • Semgrep
  • AWS
  • GCP
  • Azure
  • Docker
  • Kubernetes
  • Penetration testing report management
  • Bug bounty program management
  • Agile workflows
  • Lean principles
  • English (business proficient)
  • German (a plus)

Location

  • Berlin

Work Type

  • Full-time
  • Hybrid

Experience Level

  • 6+ years
  • Individual Contributor

Education Level

  • Degree in Computer Science, Software Engineering, Information Technology, Cybersecurity, or equivalent professional experience.

Salary/Compensations

  • €85.000—€110.000 EUR

Benefits

  • Home office budget
  • Learning & development budget of €1000 per year
  • Transparent growth framework
  • Competitive salary
  • Variable remuneration program
  • Monthly meal allowance
  • Deutschland ticket subsidy
  • 28 vacation days, increasing by 2 days after 2 years and 3 days after 3 years
  • Opportunity to work abroad for up to 12 weeks per year

About the Company

  • Solaris is Europe's leading embedded finance platform.
  • Solaris’ full German banking license and proprietary modular B2B tech stack empowers its partners – from SMEs to large, multinational, non-financial companies – to offer compliant, customer-centric banking services, providing seamless experiences to customers across all industries.
  • Founded in 2016, Solaris pioneered the Banking-as-a-Service market with an unparalleled combination of tech and banking.
  • Solaris is headquartered in Berlin and employs 300 people in Europe.

Equal Opportunity

  • At Solaris, we are committed to nurturing an inclusive environment, where all Solarians feel valued, respected and supported.
  • We are dedicated to building a diverse workforce that reflects the diversity of our communities.
  • We are committed to equal employment opportunity regardless of color, ethnicity, religion, sex, origin, disability, marital status, citizenship, or gender identity.
  • We are proud to be an equal opportunity workplace.
  • If you have a disability or special need that requires accommodation, please let us know.