Lisbon, Portugal · Hybrid
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 impac…
Skills: Secure Coding, Web Technologies, OWASP Top 10, Git, CI/CD
Lisbon, Portugal · Hybrid
Make an impact by working in sectors where technology is the enabler and innovation is the key. At Celfocus, we make data actionable through Next‑Gen Intelligence - where data, AI and human creativity come together. You’…
Skills: Python, LLMs, Prompt Engineering, RAG, Vector Databases
Lisbon, Portugal · Hybrid
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 impac…
Skills: Python, Agentic AI, Workflow Automation, AI-Assisted Engineering, Data Handling
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The intern will assist the security team in identifying and mitigating vulnerabilities in software applications. Key tasks include supporting secure code reviews, penetration testing, and implementing security best practices.
Candidates should have knowledge of secure coding, OWASP Top 10, and basic cloud platforms. Proficiency in English and familiarity with Git and CI/CD concepts are required.
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.
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.
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 organizations. 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.
Offices: Av D. João II, 34, Lisbon, Parque das Nações 1998-031, PT · Office 206, EIB, Building 05, second floor, Dubai, Dubai Dubai, AE · Newbury, Newbury RG14 2PZ, GB · Rua Daciano Baptista Marques 245, 7, Oporto, Oporto 4400-617, PT · De Colonel, Stationsplein 8-K, 6221 BT Maastricht, Netherlands, Maastricht, NL
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 organizations. 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.
Offices: Av D. João II, 34, Lisbon, Parque das Nações 1998-031, PT · Office 206, EIB, Building 05, second floor, Dubai, Dubai Dubai, AE · Newbury, Newbury RG14 2PZ, GB · Rua Daciano Baptista Marques 245, 7, Oporto, Oporto 4400-617, PT · De Colonel, Stationsplein 8-K, 6221 BT Maastricht, Netherlands, Maastricht, NL
