Team Lead / Lead Engineer / CTO - AI & Security

Teamlead CTO Engineer @ JAAS GmbH

💾 Job Technologies

• ISO 27001
• Java
• JavaScript
• TypeScript
• Python
• Linux
• Spring

👥 Your role in the team

Hands-on in code and responsibility for the big picture – both, not either-or.With us, you take on real responsibility from day one – SaaS and on-prem, exclusively open source, AI on-prem and on-device in sensitive areas. No corporate micro-management, but direct contact with management and visible impact. We are one of the few companies in Austria successfully implementing AI on-prem and on-device in sensitive areas – and we are looking for a lead who will take this to the next level.

What makes us special

• Our core business is SaaS – complemented by sophisticated on-premises solutions for a high-profile client environment: authorities, professional confidentiality holders, companies of all sizes (from sole proprietors to corporations), as well as interest groups across the entire DACH region. We expect a high standard in enterprise IT.
• Our clients particularly appreciate our creative solutions. We do not shy away from technically challenging topics, work closely with the user and the client, and thus deliver software that provides clear added value. We exclusively use open-source software and rely on modern AI-assisted coding – employed responsibly and with security in mind.

Role

• As a Team Lead/Lead Engineer/CTO, you assume overall technical responsibility and lead an interdisciplinary development team. You report directly to the executive management and operate at the second management level. You do not just fit into an existing structure, but actively shape it: the team is expected to grow to over 10 developers by 2027 – and you will influence how this growth unfolds.
• We are deliberately looking fornot just strategists, but a results-oriented personalitysomeone who is deeply embedded in the system themselves – someone who not only manages open source and enterprise IT but actively drives and delivers it consistently.

Responsibilities

• Technical and organizational leadership of a 4-member development team (AI, UX, DevOps, Backend) with a clear growth perspective to over 10 developers by 2027.
• DevOps Responsibility: CI/CD pipelines (e.g., GitLab CI, GitHub Actions, Jenkins)
• Containerization with Docker/Docker Compose; orchestration and scaling (Kubernetes, Docker Swarm, Nomad, or similar).
• Backend development in Java as well as ensuring the scalability of the application
• Server administration and management (Linux)
• Monitoring & Observability (e.g., Prometheus, Grafana, OpenTel)
• SaaS and On-Prem deployments including backup, disaster recovery, and high availability concepts.
• Networking fundamentals (DNS, TLS, Reverse Proxies, Firewalls)
• Operational implementation and ongoing management of an ISO-27001-compliant ISMS – at the code, tool, and process level.
• IT security hands-on: vulnerability and patch management, security hardening of servers, containers, and applications via code, identity & access management, secrets management, logging, and audit trails
• Participation in risk analyses, asset management, and Statement of Applicability (SoA)
• Support for internal and external audits (ISO 27001, TISAX, GDPR)
• Promotion of secure software development (OWASP Top 10, Supply Chain Security, SBOM)
• Use of AI-assisted Coding – responsibly, with security awareness, and with access to our proprietary as well as On-Device tools.

🌟 Our expectations of you

Qualifications

• Solid knowledge in DevOps, Backend Development (Java), and IT Security
• Proven expertise in building and operating scalable applications
• Hands-on mentality in IT security: You can write and adapt code yourself to improve the system's security.
• Independent, structured working style
• Passion for clean infrastructure, automation, and security best practices
• Intrinsically motivated, entrepreneurial-minded personality with a high willingness to learn
• Nice to have: Java skills (Spring Boot, Maven/Gradle), scripting skills (Bash, Python, Go), experience with AI-assisted coding, certifications & training (e.g., ISO/IEC 27001 Foundation)
• Residence in Austria (for insurance reasons)
• Work permit for Austria
• Good command of English, German is an advantage
• Criminal record certificate required
• References (former supervisors/team members) are an advantage

Qualifications

• At least 8 years of relevant professional experience
• Experience in scaleups or large companies is an advantage.
• Experience as a Lead as well as in project management is an advantage.
• Experience with the implementation of ISO 27001 is an advantage.
• Experience with secure on-prem deployments in regulated environments is an advantage.

Education

• Completed education in the IT field (HTL, FH, university) or a comparable qualification acquired through professional experience
• Further training, professional development, and certifications (e.g., Scrum, PRINCE2, ISO27001 Foundation, ITIL, ISTQB, IREB) are advantageous.

🎁 What we offer

• 100% remote work with flexible working hours
• Full-time (38.5 hours/week)
• Remuneration according to the IT collective agreement – overpayment possible depending on qualifications and experience
• Participation in innovative and challenging Tech/IT projects, including ISO-27001 certification
• Access to modern AI-assisted coding including proprietary tools and on-device AI – we rely on productivity-enhancing technologies and at the same time expect a responsible, security-conscious approach to their use.
• State-of-the-art hardware regarding devices (e.g., Mac Studio) and servers, including high-performance GPU servers.
• Annual training and professional development courses including certifications
• Lean structures and flat hierarchies – short decision-making paths instead of endless meetings and regular status updates.
• Established company with over 10 years in the market, excellent references, and exciting existing and new clients.
• Work exclusively with open-source software – we are one of the few companies in Austria successfully implementing AI on-premises and on-device in sensitive areas.

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Application Process

We respect your time and keep the process transparent:

• Application: Resume/CV
• Round 1: Online call (approximately 1 hour) for mutual introduction
• Round 2: Assessment Center (4 hours)
• Round 3: Personal interview and team meeting

Sounds like your next challenge? We look forward to receiving your application (a CV and a brief email are sufficient).

🎉 Benefits

Work-Life-Integration

• ⏰ Flexible Working Hours
• 🕺 No Dresscode
• 🙅 ♂️ No All-In Contracts
• ⏳ 4 Day Work Week

More net

• 🚂 Climate Ticket
• 🏝️ Summer and Christmas Bonus

💡 Topics that you deal with on the job

• Cloud Computing
• AI
• LegalTech

📍 Job Locations

• Bossigasse 30 1130 Wien Austria

💰 Salary

from 65.000€ gross per year

🏢 This is your employer

JAAS GmbH

📍 Vienna