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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on application security and automation and standardization of security controls. Key technologies include AWS, Kubernetes, containerization, OWASP, NIST and protocols such as OAuth, SAML, OIDC. Responsibilities involve source code analysis, architecture reviews, defining security guidelines and building security-by-default libraries. It includes collaboration with CICD and engineering teams to implement secure-by-design solutions.
from: 24 June 2026
to: 24 July 2026
salary not specifiedB2B contract (full-time)
Offer parameters
level:mid
working mode:hybrid
Warszawa, Mokotów
Requirements
Operating system
Windows
Linux
Our requirements
- 4+ years of full-time commercial application security experience
- 4+ years of experience in software development, preferably in cloud environment
- Experience in architecting and building application security on modern tech stacks across multiple platforms (web, mobile, desktop)
- Prior experience in performing threat modelling and secure design reviews
- Familiarity with cloud services and their security best practices and secure design patterns - AWS especially
- Kubernetes and containerization security know-how
- Knowledge of common appsec vulnerabilities like OWASP Top 10 and cloud security gaps
- Knowledge of standards like OWASP Testing Guide, OWASP ASVS, NIST and SANS top 20
- Proficiency in modern and common web stack technologies (HTTP, HTML5, AJAX, REST, ...)
- Understanding of basic cryptography (encryption, hashing, MACs, digital signatures, TLS, password storage) and how they are applied in web applications
- Knowledge of protocols (OAuth, SAML, OIDC), flows and best practices
- At least basic know-how in networks
Optional
- Application Security related certificates
- Cloud (Security) related certificates
Your responsibilities
- Identify opportunities to automate and standardize application security controls and cooperate with the CICD team
- Analyze source code to mitigate identified weaknesses and vulnerabilities
- Create guidelines and application security standards
- Review and check automated security testing results
- Perform software architecture design reviews for both on-prem and cloud deployments
- Work with engineering teams to help architect and implement solutions that are secure by design
- Define, document, and supervise implementation of security guidelines and standards
- Build frameworks and libraries to provide security by default
This is how we organize our work
This is how we work
agile
T-Mobile Poland is a leader in telecommunication, dedicated to providing innovative solutions that drive growth and efficiency for our clients. Our commitment to security and integrity is at the forefront of our operations, and we are seeking a talented Application Security Expert to join our team.
As an Application Security Expert at T-Mobile you will play a crucial role in safeguarding our systems and data. You will work closely with our IT, Cloud and development teams to ensure robust security measures are in place and that our applications and infrastructure are secure against current and emerging threats. Your broad knowledge of security topics, combined with your understanding of application security and cloud security, will be essential in this role.
Benefits
- sharing the costs of sports activities
- private medical care
- sharing the costs of professional training & courses
- life insurance
- remote work opportunities
- flexible working time
- corporate products and services at discounted prices
- mobile phone available for private use
- no dress code
- parking space for employees
- employee referral program
- charity initiatives
Recruitment stages
- 1.Wyślij swoje CV
- 2.Spotkaj się z przyszłym liderem/ liderką zespołu :)
- 3.Witaj w T-Mobile :)
T-Mobile
Jesteśmy firmą technologiczną, a naszym celem jest tworzenie innowacyjnych rozwiązań dla klientów indywidualnych i biznesowych.
W T-Mobile wszyscy żyjemy w świecie magenta! Kolor ten jest nam bliski, bo oznacza wiarę w powodzenie podejmowanych działań, pewność siebie i wytrzymałość. Właśnie tacy jesteśmy jako zespół.
W #MagentaTeam stawiamy na wymianę doświadczeń, zwinną pracę i szybko adaptujemy się do zmian! #MagentaTeam to jednak przede wszystkim mix różnych kompetencji i doświadczeń, osobowości, temperamentów i poglądów. Właśnie w tej różnorodności widzimy naszą największą siłę.
This is how we work
Application Security Expert
I apply to:
T-Mobile
Warszawa, Mokotów
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