This website uses cookies to ensure you get the best experience.

Celfocus and our selected partners use cookies and similar technologies (together “cookies”) that are necessary to present this website, and to ensure you get the best experience of it. If you consent to it, we will also use cookies for analytics and marketing purposes.

See our Cookie Policy to read more about the cookies we set.

You can withdraw and manage your consent at any time, by clicking “Manage cookies” at the bottom of each website page.

Select which cookies you accept

On this site, we always set cookies that are strictly necessary, meaning they are necessary for the site to function properly.

If you consent to it, we will also set other types of cookies. You can provide or withdraw your consent to the different types of cookies using the toggles below. You can change or withdraw your consent at any time, by clicking the link “Manage Cookies”, which is always available at the bottom of the site.

To learn more about what the different types of cookies do, how your data is used when they are set etc, see our Cookie Policy.

These cookies are necessary to make the site work properly, and are always set when you visit the site.

Vendors Teamtailor

These cookies collect information to help us understand how the site is being used.

Vendors Teamtailor

These cookies are used to make advertising messages more relevant to you. In some cases, they also deliver additional functions on the site.

Vendors Linkedin
Skip to main content
SH Application Security · Lisbon, Porto

Application Security | Curricular Internship

Start your journey in a learning‑driven environment, inside a fast‑paced and ever‑evolving world of tech and innovation.

At Celfocus, you’ll work with diverse teams on real projects and see how ideas turn into real impact.

Hybrid ways of working, international projects, and the space to explore different paths as you grow.

Explore your way in.


 

The opportunity

As an Application Security Intern, you will assist the security team in identifying, analyzing, and mitigating security vulnerabilities in software applications. Your responsibilities may include supporting secure code reviews, participating in penetration testing, researching common threats, and helping implement security best practices across the development lifecycle.

What you’ll bring

  • Knowledge of secure coding practices and web technologies (HTML, CSS, JavaScript).

  • Familiarity with OWASP Top 10 and basic vulnerability types (XSS, SQL Injection, etc.).

  • Experience with Git and basic CI/CD concepts.

  • Basic understanding of cloud platforms (AWS, Azure, or GCP).

  • Self-motivated and eager to learn in a fast-paced environment.

  • Strong analytical thinking and problem-solving skills.

  • Effective communication and collaboration within diverse teams.

  • Fluent in English, both verbal and written.

  • Ability to adapt and quickly acquire new technical skills.

Technical Skills & Technologies

  • SAST (Sonarqube, Fortify, etc).

  • SCA (Dependency Check, Whitesource, etc).

  • DAST (ZAP, Burp, etc).

  • Defect Dojo.

  • Java, PHP, Python, C, etc.

  • Pipelines (Jenkins, Gitlab CI/CD, Azure DevOps, etc).

What’s in it for you

• Hybrid way of working with flexibility and balance.

• Opportunity to work on international projects.

• Possibility to explore different roles and career paths.

• Continuous learning and development opportunities.

• A growing AI‑driven environment, working with the latest technologies.

• A set of benefits and perks to support your day-to-day.

A place for everyone

At Celfocus, we are committed to cultivate a diverse and inclusive workplace. As an equal-opportunity employer, we welcome applicants of all backgrounds, gender identities, and abilities.

If you require any adjustments during the selection process, please inform our Talent Acquisition Team.

Department
SH Application Security
Role
Application Security Analyst
Locations
Lisbon, Porto
Work Model
Hybrid
Seniority
Internship
Picture of Mariana Santos
Contact Mariana Santos Leverages | People | Talent Acquisition

About Celfocus

Celfocus is pioneering the future of business through Next-Gen Intelligence - the convergence of data, AI, and human creativity to build more autonomous and adaptive organisations. 

Guided by our core belief - Making Data Actionable - we partner with leading companies to co-create intelligent solutions that turn data into insight, agility, and business value. 

Operating in over 25 countries, we bring together business experts, data scientists, and AI engineers to turn complexity into clarity and vision into measurable impact. 

Founded in 2000, Celfocus is part of Novabase, listed on Euronext Lisbon.

To know more, visit www.celfocus.com

SH Application Security · Lisbon, Porto

Application Security | Curricular Internship

Loading application form

Applicant tracking system by Teamtailor