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Salary
≈ $55k – $127k per year (Estimated)
Location
Remote (Turkey)
Seniority
Senior · 4+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 15, 2026. First seen by Alion on Mar 31, 2026. Insider One scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Insider One, formerly Insider, is a customer experience and marketing technology company founded in Istanbul in 2012. Its platform unifies customer data and orchestrates personalized campaigns across web, app, email, SMS and messaging channels, using AI for segmentation and recommendations, and is used by enterprise brands in retail, travel, telecom and finance. It became the first Turkish technology unicorn with a female co-founder and runs offices across Europe, Asia-Pacific and the Americas, including London, Paris, Berlin, Warsaw, São Paulo and New York. The company is headquartered in Istanbul, Turkey.

And now? Now we are looking for a Security Engineer - Red Team who wants totake their career one step further. If you think you are one of those people, here you will have the chance to work withthe world's leading brands with Artificial Intelligence & Machine Learning technologies. Right now, while you are reading this, we are sending an average of 2.2 billion requests and almost 2 billion instant notifications to more than 450 servers a day.On the Artificial Intelligence and Predictive side, we have more than 100 TB of historical data. We do not wait for jobs or opportunities to come to our feet, we create them. We have now reached25% of global users. If all these interests you, read on for more!

Our Engineers and Software Developers always think with an innovative perspective, taking advantage of the inexhaustible power of the digital world. They createimpressive and intelligent products like a true artist. Our Product and Development teams are located in our Istanbul and Ankara offices, so we produce and develop the technology we export to the world in our own country. As Insider One, we believe in cooperation and adapting the innovations brought by technology byacting fast. We workclosely with other Departments with agile teams, and we are not afraid of getting our hands dirty. As we said; we do not wait for jobs or opportunities to come to our feet, we create them ourselves. You can check our Tech Stacks here!

What You Will Do

  • performs web, mobile application, and internal penetration tests, source code reviews, threat analysis, social-engineering assessments,
  • supports blue teams when needed,
  • researches new attack vectors and stays current with cybersecurity news and trends,
  • trains Quality Assurance and Development teams in standard security testing techniques and secure software development.

What You Will Need

  • have 4+ years of working experience in web application security,
  • have hands-on experience in security testing of web applications, web services, mobile applications, APIs, etc.,
  • have experience securing REST APIs and web services,
  • have experience using and implementing SAST / DAST tools such as Fortify, Veracode, Checkmarx, or other similar tools,
  • know how to conduct penetration tests of information systems using commercial and open-source exploitation tools,
  • have a good understanding of standard security vulnerabilities and common remediation as published by OWASP, SANS, etc.,
  • have experience working with secure coding methodology and best practices and their implementation within engineering teams,
  • will support developers of our business units in their SDLC and provide guidance regarding mitigations to emerging threats,
  • will review application source code based on static application security testing tools,
  • will be engaging in security research to remain current on vulnerabilities and testing tools,
  • will be creating detailed, professional documentation/reports that clearly communicate vulnerabilities, mitigation strategies, and remediation steps,
  • have the ability to work on multiple projects concurrently and be committed to providing exemplary customer service,
  • have strong written and verbal communication skills in English,
  • have Python, JavaScript, PHP programming experience as a plus,
  • have knowledge in scripting (any language) and experience in automation scripts for application security testing as a plus,
  • have familiarity with cloud security, particularly AWS security concepts, as a plus,
  • have certifications such as eWAPTx, OSCP, OSWE, etc., as a plus,
  • are able to work in a team-centric environment,
  • have strong critical thinking and analytical skills,
  • have experience in executing white, gray, or black box security posture assessments and completing detailed reports that outline the findings and recommendations.

What We Offer

  • Enjoy a monthly meal allowance designed to enhance your daily routine.
  • Access comprehensive private health insurance.
  • Feed your curiosity with access to Spotify, LinkedIn Learning, Blinkist, MasterClass, Neoskola, and CloudGuru.
  • Level up with internal trainings covering AI fundamentals, coding, foreign languages, and a wide range of personal development skills.
  • Be part of a diverse team that’s as global as it gets, where every voice is heard and 50+ nationalities build together.
  • Become a Shareowner through our eligibility-based “ESOP” and own a piece of what you build.
  • Help build the team you want to work with and enjoy rewarding referral bonuses.
  • Opportunities to give back to your community through volunteering and purpose-driven social impact projects.
  • From global retreats to team-building activities, expect year-round events that turn into lifelong memories.
  • Get inspired by the greatest minds in the tech industry through events like our Tech & Dev Talks.
  • Work from anywhere in Turkey through our fully remote setup.
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