Senior Software Engineer & Team Lead m/f/d

About ATOSS 

ATOSS Software SE is one of Germany’s most successful tech growth stories. As the market leader in Workforce Management Software, we help companies work more intelligently, creatively, and humanely optimizing the balance between profitability and people. 

We’re a rare company: according to Handelsblatt (10/24), just 309 public companies worldwide achieved over 20% return on sales for ten consecutive years. Only two are based in Germany and ATOSS is one of them. 

With 20 years of record-breaking growth, over €2 billion market cap, and listings in SDAX and TecDAX, we’re scaling globally and we’re growing. 

If you’re ready to drive impact in a high-performing B2B SaaS environment, this is your chance to elevate your career. 

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. 

The Role

As a Senior Software Engineer & Team Lead, you combine hands-on technical work with cross-team people leadership. You will actively work as a senior engineer within one of our Scrum teams shaping and evolving our enterprise product ASES in the Time & Attendance domain. In parallel, you take on supervisory responsibility for all Romanian engineers (~12 people) – based in Timisoara and Sibiu – across three Scrum teams. You and your team will help us roll out and improve our new time evaluation and wage calculation engine to bring value to our customers in different markets and industries. We are looking for someone who demonstrates strong ownership as a senior engineer, and the ability to guide, coach and grow colleagues across team and location boundaries.

Why this role is exciting, impactful and challenging

This role goes beyond individual delivery or single-team leadership. You and your team will work on a mature, mission-critical enterprise system with complex domain logic, long-lived codebases, and high expectations for correctness and stability. The work you and your team do directly supports the daily work and affects the incomes of hundreds of thousands of employees, making stability and reliability essential – and giving you and your team the opportunity to create real, lasting value at scale. Decisions often have long-term impact and require balancing technical quality, business constraints, delivery pressure, and the development of engineers across multiple teams and locations. Success in this role requires a strong sense of ownership, the ability to navigate complexity, and the willingness to take responsibility for outcomes and growth beyond your own team, not just code.

Team & Organization

• You'll work hands-on as a senior engineer within one Scrum team of ~10 engineers.

• You'll additionally take on people-leadership responsibility for the Romanian engineers across three Scrum teams, located in Timisoara and Sibiu.

• Our Engineering department consists of 250+ professionals across multiple teams and fields.

Key Responsibilities:

1. Hands-on Senior Engineering

• Design, implement and maintain core software components end-to-end within your Scrum team

• Own delivery of both short- and long-running initiatives

• Ensure high quality through sound engineering practices and reviews

• Proactively drive improvements and innovation in the product and the organization

2. Cross-Team People Leadership

• Supervise, support, and coach the Romanian engineers across all three Scrum teams by being an inspiring role model

• Foster collaboration within and across teams and locations

• Align individual and team goals with the overall strategy

• Assess team performance and drive strategies for continuous improvement

3. Driving architectural decisions

• Lead and influence architectural decisions that align with business goals

• Balance short-term delivery with long-term sustainability

4. Stakeholder management and Communication

• Confidently engage with internal and external stakeholders at different levels, including across teams and locations

• Communicate clearly and effectively: present, align, negotiate and listen

• Translate between technical and non-technical perspectives

Key Requirements:

• Proven track record of ownership of complex technical solutions as a senior engineer

• Demonstrated experience leading or supervising engineers, ideally across teams or locations

• 6+ years of professional experience in software engineering, including experience in a leadership or supervisory role

Skills & Competencies:

• In-depth knowledge of Java

• We work with Spring Boot, SQL, Kafka, Azure and others - but we value conceptual knowledge over concrete technologies and frameworks

• Strong understanding of software architecture; Cloud-native application architecture is a plus

• Strong facilitation, communication, and interpersonal skills

• Analytical mindset, with the ability to assess team performance and implement strategies for continuous improvement

• Experience leading or coordinating distributed/remote teams across multiple locations is a plus

• Fluent in English (spoken and written); knowing German is a plus

Education:

• Bachelor's / master's degree in computer science or a related field.

Our Benefits  

• Onboarding: HR Induction, Newbies-Day, Training for our internal products & Buddy-Program
• Benefits: meal vouchers, performance bonus, recommendation bonus, voluntary company bonus, free parking at our VOX Technology Park location in Timisoara, Bookster for bookworms, gaming rooms & rooftop access in Timisoara
• Company culture: flexibility through HYBRID working style (50% work from home), 25 vacations days from start, Diversity & Inclusion Team – culture talks, company event (Halloween/Christmas/ Summer party, team buildings), Barista corner in Timisoara, fresh fruit & sweets day after every release cycle, relocation package for those who wish to move to Timisoara/Sibiu
• Career and development: career model with Expert- & Leadership Track, LinkedIn Learning, German language course if department requires, Java and Scrum certifications
• Health Initiatives: medical subscription with a national-wide medical provider, 7Card for fitness activities, engagement events for employees
• 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.
• 2 locations in Romania: TIMISOARA – VOX Technology Park | Calea Torontalului nr 69 | building B and SIBIU Str. Nicolaus Olahus | No.5 | Business Center Sibiu | Building B | Ground Floor
• Standard contract: CIM

 

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

Join us and be part of a high-growth, future-focused company!