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mid level application security engineer hybrid lisbon

Hiring from
Portugal
Work type
Hybrid
Posted
Sep 28, 2026
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Mid-level Application Security Engineer (Hybrid - Lisbon)

00069157241

What makes Cognizant a truly unique place to work?

Cognizant offers strong growth, global reach and an innovative environment where tech professionals can deliver meaningful, high‑impact work. Teams collaborate across regions to build and deliver advanced solutions for leading companies, enabling greater agility, innovation and performance.

We are looking for a capable Mid-Level Reverse Engineer to join our dynamic project. You will be responsible for independently dissecting Android applications, including those using common obfuscation and anti-tampering techniques. This role requires technical expertise to trace complex data flows, analyze native interfaces, and deliver actionable security insights with minimal supervision.

Can you see yourself in this position? Check the requirements and apply!

Key Responsibilities:

  • Execute analysis on intermediate complexity workflows and propose minor improvements to existing methodologies.
  • Independently de-obfuscate and analyze applications utilizing common obfuscation techniques (e.g., control flow flattening, string encryption).
  • Demonstrate proficiency in analyzing native code interfaces (JNI).
  • Utilize and automate industry tools (Ghidra/IDA Pro, Frida hooks, Burp Suite) to optimize analysis time.
  • Provide detailed technical reports and collaborate directly with security and development teams.

You are someone who brings:

  • Proven experience in Reverse engineering Android applications (APKs) OR Android Development using Android SDK OR Penetration Testing / Offensive security
  • Solid understanding of Android security internals.
  • Background in Android Application Development (Java/Kotlin) OR Security analysis and vulnerability assessment OR Software Reverse Engineering
  • Experience with static and dynamic analysis techniques.
  • Strong analytical and problem-solving skills.
  • Excellent communication and documentation skills.
  • Ability to work independently and as part of a team.
  • High proficiency in using a wide array of analysis tools for end-to-end investigation.

Nice to have:

  • Familiarity with and practical experience using reverse engineering tools such as apktool, Ghidra (or IDA Pro), and hexdump.
  • Experience with assembly languages (e.g., ARM).
  • Familiarity with malware analysis techniques on mobile platforms.
  • Understanding of obfuscation and anti-tampering techniques used in Android apps.

About Cognizant:
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.

Additional employment information
Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.

Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.

If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email CareersNA2@cognizant.com for roles based in the Americas or CareersIndia2@cognizant.com for roles based in India.

Benefits that help you thrive and grow

Our benefits program is built with you in mind—so you can enjoy a fulfilling, balanced and healthy life.

Financial wellbeing

We regularly review market data to ensure compensation reflects the value you bring. Your benefits extend beyond pay and may include retirement plans, financial education, etc.

Physical and mental health

We empower you to prioritize your wellbeing through paid time off, flexible working where possible, healthcare plans, counselling, our Mental Health Allyship program and more.

Your career, your way

With 350,000+ roles at Cognizant, you’ll have opportunities explore new technologies, industries and locations—and build the skills you need to grow your career.

Real-world impact

Think about the biggest brands you rely on. Chances are, they rely on us to help strengthen their business. Here, you’ll turn bold ideas into solutions that improve lives everywhere.

Your path to Cognizant

Here’s what you can expect from our hiring process. Please keep in mind that it may vary by role and location. Explore our FAQs to learn more.

Step 1: Apply to the right opportunity

Find an open role that matches your skills and career goals and show us why you’re the person for the job. Don’t see the right opportunity? Consider joining our Talent Community.

Step 2: Connect with your recruiter

If one of our recruiters sees a fit, they’ll set up a short intro call to learn more about you and how your experiences and skills match the role.

Step 3: Show off your skills

If you and our team would like to continue the process, you’ll interview with our hiring team. Some roles may also require technical assessments and/or client interviews.

Step 4: Decision time

Our team will then review each candidates’ potential to succeed in the role. This step may take some time because we want to find the right fit for both you and us—but you can count on us to keep you updated.

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