Cybersecurity Engineer

TELMO eSIM; Turkey; Remote; TRY 350,000 - 520,000; Full time

Benefits offered by this job

Fully remote work

Global team

Flexible hours

Multicultural culture

Job summary

TELMO eSIM is seeking a security engineer to strengthen the security of its web platform, APIs and infrastructure through testing, monitoring and secure engineering practices.

You will run security reviews and penetration tests of web apps and APIs, configure and monitor WAF and bot protection, help developers fix vulnerabilities and adopt secure coding practices, lead incident response with written security policies, and contribute to a culture of secure engineering.

Qualifications

• 4+ years in application or infrastructure security.

Responsibilities

• Run security reviews and penetration tests of web apps and APIs.
• Configure and monitor WAF, bot protection and alerting.
• Help developers fix vulnerabilities and adopt secure coding practices.
• Lead incident response and write security policies.

Skills

App security

Infra security

Penetration testing

OWASP Top 10

Log analysis

Incident response

Reporting

Tools

WAF

CDN security

SIEM

Incident response tooling

Job description

About the role

You will strengthen the security of our web platform, APIs and infrastructure through testing, monitoring and secure engineering practices.

What you will do

• Run security reviews and penetration tests of web apps and APIs.
• Configure and monitor WAF, bot protection and alerting.
• Help developers fix vulnerabilities and adopt secure coding practices.
• Lead incident response and write security policies.

What we are looking for

• 4+ years in application or infrastructure security.
• Hands-on experience with web application testing (OWASP Top 10).
• Experience with WAF/CDN security and log analysis.
• Clear reporting with practical remediation advice.

Nice to have

• Security certifications such as OSCP or CISSP.
• Experience with payment security (PCI DSS).

About TELMO eSIM

TELMO eSIM provides eSIM connectivity in more than 200 countries for travellers, businesses and partners. We are a remote-first team building a reliable, multilingual platform that works everywhere.

What we offer

• Fully remote work with a global team.
• Meaningful ownership in a fast-growing telecom product.
• Flexible working hours across time zones.
• A respectful, multicultural working culture.