AWS Software Security Engineer

Here at Three, we’ve done things differently since day one 

We take the script and rip it up, we’re a big-hearted energetic bunch, striving for a better connected life. The energy of our people, the pace at which we operate, and the thrill of making bold moves is exhilarating and addictive. Magic happens when we power the connections that millions value, and you can feel it… When these things combine, phenomenal things happen. 

We encourage our employees to face their weaknesses, to really open themselves up to new tasks and projects in a super-charged and rich learning environment. We want you to become the best version of yourself. 

Join us as a AWS / Software Security Engineer 

At Three Ireland, customer experience is at the forefront of everything we do. As a Security Engineer, you’ll help to build and manage services that detect and automate the mitigation of cybersecurity threats across our Amazon infrastructure. 

You’ll work with, software development engineers, and other security engineers across multiple teams to develop innovative security solutions. Our services protect the AWS cloud for all customers and preserves our customers’ trust in us. You’ll get to use the full power and breadth of AWS technologies to build services that proactively protect our customers. 

What else it involves:

•  Assist in applying Secure by Design principles to application development. 

• Support vulnerability management processes, including tracking, coordination, and follow-ups with developers. 

• Run and automate security scans and assist in interpreting results. 

• Help coordinate external penetration testing engagements and track issues to resolution. 

• Contribute to security education efforts through documentation and collaboration. 

• Track security tickets using Jira or similar tools and support progress reporting. 

• Support preparation for security assessments and audits by gathering documentation as directed. 

Skills we're looking for 

• Practical experience identifying and remediating security vulnerabilities in web or cloud-based applications. 

• Understanding of the OWASP Top 10, with exposure to SAST and DAST tools and methodologies. 

• Familiarity with TLS/SSL certificate lifecycle concepts; experience with platforms like Entrust is a plus. 

• Experience using vulnerability management tools such as Qualys, GitHub Advanced Security (GHAS), or Dependabot. 

• Exposure to penetration testing processes (hands-on experience desirable but not essential). 

• Basic understanding of cloud security concepts, preferably in AWS. 

• Interest in developing skills in DevSecOps practices and integrating security into CI/CD pipelines. 

• Ability to work collaboratively with engineering and security teams to support secure development. 

• Exposure to compliance frameworks is a plus. 

• Good communication skills and a willingness to learn and contribute to security improvements. 

• Self-motivated, with a proactive approach to learning in the cybersecurity space. 

Basic Qualifications

•  BS degree in Computer Science or related field
•  3+ years of experience performing security investigations, penetration testing, and/or incident response in the context of large organization
• 3+ years of experience in software development environments (JavaScript, PHP, LAMP Stack).
•  3+ years’ experience with AWS (AWS Qualifications advantageous). 

Benefits of Working at Three

•  Flexible working with our new Hybrid model, our employees will enjoy more flexibility working from home and our office location (office based 3 days per week) please see the Job Description for the specific office location of this role.
•  Competitive salary, annual performance bonus & pension contribution
•  25 days holidays plus 2.5 company days
•  Annual Leave buy or sell (buy or sell up to 5 days AL each year)
•  Healthcare Insurance through our flexible benefits programme
•  Life assurance, phone & laptop, subsidized canteen
•  Access to learning & development tools
•  Free on-site parking

There’s a lot more to us than meets the eye.

You may think you know us, but we’re full of surprises. Intrigued? Join us and Be Phenomenal.
Apply now at: https://www.three.ie/careers #Jobs 

At Three, we are committed to diversity and inclusion. As Ireland’s largest mobile telecommunications provider, we provide a better connected life for our diverse customer base, and want our teams to reflect this. We welcome and celebrate all identities and strive to create a culture of belonging where employees can thrive as their authentic selves. If you do not ‘tick every box’ in this job description, you likely have other valuable skills that would make you a great fit for one of our teams. If you feel this role is for you, then please apply!

If you require reasonable adjustments for your interview, please let us know when scheduling your interview, or alternatively, please email aoife.omeara@three.ie Apply now at Three, a Phenomenal career awaits!