Senior Software Engineer (Scale-Up Phase / Air Defence Command & Control Systems)

Atos SE; Çankaya; On-site; TRY 450,000 - 650,000; Full time

Benefits offered by this job

Private health insurance

Life insurance

Performance Bonus

Accolade bonus

Referral bonus

Transportation allowance

Meal allowance

Kindergarten allowance

Buddy program

Flexible working hours at Atos or home

Company SIM card

Days of annual leave above the legal;

Atos University Access

Wellbeing days

Friendly working environment

BYOD

Job summary

Atos is seeking a Senior Software Engineer for a scale-up phase in Ankara to develop and enhance air defence command and control systems. You will design, implement, and maintain software across back-end and front-end layers using C#, .NET, Angular and TypeScript within an Agile team.

You will mentor juniors, participate in code reviews, and contribute to CI/CD pipelines while collaborating with cross-functional teams on complex defense projects.

Qualifications

• B.Sc. degree in Computer Engineering, Computer Science or a related field.
• 8+ years of proven experience in software development.
• Strong debugging, performance optimization, and problem-solving skills.
• Strong proficiency in C# and .NET Framework development.
• RESTful API design and integration (XML, JSON, etc.).
• Extensive experience with Angular (v10+) and TypeScript. Experience with React is also considered valuable.
• Experience with ORM frameworks and concepts, including concurrency management, loading strategies, validation, and caching.
• Experience with source control and configuration management tools (e.g., Git, Azure DevOps, TFS, ClearCase).
• Familiarity with Continuous Integration and DevOps concepts
• Solid understanding of object-oriented programming (OOP), SOLID principles, and design patterns.
• Experience working in Agile/Scrum development environments.
• Ability to perform code reviews and mentor junior developers.
• Experience with front-end architecture, component-based development.

Responsibilities

• Analyze user requirements and create software specifications.
• Actively participate in the design, development, and maintenance of software applications.
• Design and document technical solutions.
• Develop and maintain applications in line with Atos processes and industry standards.
• Perform unit testing, code reviews, and refactoring.
• Support release deployments and resolve post-production issues.
• Participate actively in team collaboration, knowledge sharing, and technical discussions.
• Provide timely support to customer needs, troubleshoot issues, and deliver solutions.
• Write clear technical documentation and present complex information effectively.

Skills

C#

.NET Framework

Angular (v10+)

TypeScript

RESTful API

React

ORM frameworks

Git

Azure DevOps

TFS

ClearCase

CI/CD

OOP/SOLID

Agile/Scrum

Code reviews

Education

B.Sc. in Computer Engineering or Computer Science

Tools

Git

Azure DevOps

TFS

ClearCase

Entity Framework

NHibernate

WCF

Job description

Senior Software Engineer (Scale-Up Phase / Air Defence Command & Control Systems)

Publication Date: Aug 28, 2026

Ref. No: 548946

Location: Çankaya/Ankara, TR

Atos is a global leader in digital transformation with c. 78,000 employees and annual revenue of c. € 10 billion. European number one in cybersecurity, cloud and high-performance computing, the Group provides tailored end-to-end solutions for all industries in 68 countries. A pioneer in decarbonization services and products, Atos is committed to a secure and decarbonized digital for its clients. Atos is a SE (Societas Europaea) and listed on Euronext Paris.
The purpose of Atos is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.

We are growing our team for the next phase of our strategic defense industry project, further strengthening our position in the sector through our newly renewed long-term contract and are looking for Senior Software Engineers based in Ankara.

If you have strong experience in software development and would like to work on impactful projects, we would be happy to hear from you.

If you want to take part in shaping large-scale, cutting-edge solutions in the defense industry, this role is for you!

Technical Requirements

• B.Sc. degree in Computer Engineering, Computer Science or a related field
• 8+ years of proven experience in software development
• Strong debugging, performance optimization, and problem-solving skills.
• Strong proficiency in C# and .NET Framework development.
• RESTful API design and integration (XML, JSON, etc.)
• Extensive experience with Angular (v10+) and TypeScript. Experience with React is also considered valuable.
• Experience with ORM frameworks and concepts, including concurrency management, loading strategies, validation, and caching.
• Experience with source control and configuration management tools (e.g., Git, Azure DevOps, TFS, ClearCase).
• Familiarity with Continuous Integration and DevOps concepts
• Solid understanding of object-oriented programming (OOP), SOLID principles, and design patterns.
• Experience working in Agile/Scrum development environments.
• Ability to perform code reviews and mentor junior developers.
• Experience with front-end architecture, component-based development.

Nice To Have Areas Of Experience

• Experience with defence projects compliant with IEEE 12207
• Java
• WPF / Silverlight (XAML)
• Entity Framework, NHibernate
• WCF services implementation

Responsibilities

• Analyze user requirements and create software specifications
• Actively participate in the design, development, and maintenance of software applications
• Design and document technical solutions
• Develop and maintain applications in line with Atos processes and industry standards
• Perform unit testing, code reviews, and refactoring
• Support release deployments and resolve post-production issues
• Participate actively in team collaboration, knowledge sharing, and technical discussions.
• Provide timely support to customer needs, troubleshoot issues, and deliver solutions
• Write clear technical documentation and present complex information effectively

General Skills And Attributes

• Strong communication and collaboration skills
• Reliable, responsible, and self-motivated team player
• Solid problem-solving and analytical mindset
• Proactive in adapting to changing project needs
• Passionate about continuous learning and self-improvement
• High sense of ownership, accountability, and urgency
• Willingness to travel abroad when needed
• Having a valid National Security Clearance (MoD, Turkey) is a plus

What We Offer

GPTW Certified Company

Competitive Compensations And Benefits

• Flexible benefit program
• Private health insurance
• Life insurance
• Performance Bonus
• Accolade bonus
• Referral bonus
• Transportation allowance
• Meal allowance
• Kindergarten allowance
• Buddy program
• Flexible working hours at Atos or home office
• Company SIM card
• Days of annual leave above the legal minimum
• Atos University Access – Professional and personal development through continuous education and certification
• Wellbeing days
• Friendly working environment
• BYOD - Bring your own mobile device campaign

#FT

At Atos, our ambition is to be a diverse and inclusive company where people are truly free to be themselves. They can thrive, achieve their personal goals and innovate without limitations. We welcome everyone to apply.

Here at Atos, we want all our employees to feel valued, appreciated, and free to be who they are at work. Our employee lifecycle processes are designed to prevent discrimination against our people regardless of gender identity or expression, sexual orientation, religion, ethnicity, age, neurodiversity, disability status, citizenship, or any other aspect which makes them unique. Across the globe, we have created a variety of programs to embed our Atos culture of inclusivity, and work hard to ensure that all our employees have an equal opportunity to contribute and feel that they are exactly where they belong.