THE PERSON YOU ARE

At ATOSS, we hire for both character and skill, seeking individuals who embody resilience, a pioneering spirit, and the passion to grow.
We value those who:
Think like entrepreneurs – taking ownership, pushing boundaries, and driving impact.
Challenge the status quo – bringing fresh ideas and bold execution to the table.
Thrive in change – seeing growth as a lifelong journey, both professionally and personally.
We don’t just equip you for work we prepare you for life.

KEY REQUIREMENTS

• 10+ years of professional experience in software engineering, ideally in SaaS or product companies.
• 4+ years in a role with architectural ownership of complex software systems.
• Deep expertise in frontend architecture and modern frameworks, including strong hands-on experience with Flutter for both web and mobile.
• Proven ability to lead architecture transformations in cloud-native environments.
• Sound knowledge of Java, OSGi, and modularization patterns in complex enterprise systems.
• Experience embedding AI/ML features and data visualizations into user-facing applications.
• Track record of successfully guiding teams and delivering scalable, user-centric software solutions.
• Fluent in English (German is a plus).
• University degree in Computer Science or related field (Master’s preferred).

Our Benefits

• Competitive Rewards: Including profit-sharing and employee stock program.
• Structured Onboarding & Continuous Leadership Development: Clear career paths onboarding through Expert & Leadership Tracks, plus access to ATOSS Academy.
• Flexible Work Culture: Hybrid options (remote within the EU), 30 days of vacation, and a strong commitment to diversity & inclusion.
• Engaging Team Environment: Seasonal company events, team retreats, and an in-house barista.
• Health & Wellbeing: Including regular check-ups, corporate wellness programs, and Wellhub membership.
• Stability & Growth: Company listed on SDAX & TecDAX, with 19+ years of record-breaking revenue and a 30%+ EBIT margin. Certified Top Employer© for the 5th year in a row.

At ATOSS, great talent knows no limits. We welcome professionals from all backgrounds and empower their growth through an inclusive, skill focused environment.

THE ROLE

As a Lead Architect, you will act as the Frontend Transformation Lead for one of our most critical product lines: Atoss Time Control (ATC). Your mission is to guide the architectural evolution of our frontend across web and mobile, leveraging Flutter, embedding AI and analytics, and driving our shift to a cloud-native environment on Microsoft Azure.
You will also shape the future of a highly successful on-premise solution—modernizing it into a modular, service-oriented product built for scale and speed. This is a hands-on, high-impact role with strong technical visibility across the business.

KEY RESPONSIBILITIES

• Architect and drive the implementation of a Flutter-based frontend across web and mobile platforms.
• Lead the transformation of a mature product from legacy on-prem to a cloud-native, service-oriented architecture.
• Embed AI capabilities and analytics into the product to elevate user experience and business insight.
• Architecturally guide four cross-functional agile teams across multiple locations in Germany and Romania.
• Collaborate with product, design, backend, cloud, and data teams to deliver cohesive, scalable functionality.
• Align development with Microsoft Azure cloud-native best practices, ensuring maintainability and scalability.
• Be a technical sparring partner for internal stakeholders such as CloudOps, Professional Services, and Customer Support.
• Mentor and develop frontend engineers, fostering high standards in code quality, performance, and UX.
• Stay ahead of emerging technologies and trends, continuously improving our product and engineering processes.