Sr. Software Architect

Who Are We?

Founded in 2005 with the vision of becoming a global fashion brand, our company now serves millions of customers worldwide through 500+ stores and online operations.

At DeFacto, we see ourselves as more than just a company. Our goal is to strengthen the engagement, motivation, and social responsibility of every DeFacto team member who we call as DeFactonian. We encourage participation in internal events, sports, and social clubs while fostering a strong company culture through our vision, mission, strategies, and principles.

What Do We Expect from You?

Qualifications:

• BSc or MSc degree in Computer Engineering, Software Engineering, Mathematical Engineering, or related fields.
• 8+ years of professional software engineering experience, with at least 2+ years in a Senior Software Architect role within enterprise-grade projects.
• Experienced in designing distributed systems with a strong focus on event-driven architecture.
• Advanced expertise in developing scalable, highly available enterprise-grade software using .NET / .NET Core technologies.
• Strong experience in relational (MS-SQL, PostgreSQL) and non-relational database models (Key/Value, Document, Graph).
• Solid understanding of core AI/LLM concepts (Prompt engineering, Embeddings, Semantic Search, Vector Databases).
• Hands-on experience or strong familiarity with developing AI Agents, multi-agent frameworks (e.g., LangChain, Semantic Kernel, AutoGen), and integrating LLMs into enterprise workflows with knowledge of AI Gateway security, token/cost optimization, and model management.
• Advanced skills in using AI Coding Agents (such as GitHub Copilot and Claude Code) and optimizing token usage during development.
• Proficient with containerization and orchestration concepts (Docker, Kubernetes), and CI/CD pipelines.
• Passionate about working in a fast-paced, Agile environment and leading technical excellence.

Job Description:

• Lead the design, development, and modernization of our next-generation, business-critical, and highly scalable service platforms.
• Drive the integration of AI capabilities into our enterprise ecosystem, designing robust architectures for AI Agents and intelligent automation workflows.
• Opportunity to architect and work with a cutting-edge ecosystem: .NET Core, Docker, Kubernetes, Dapr.io, Nats.io, Redis, Vector DBs, Elastic Search, GrayLog, Grafana, Prometheus,New Relic, SonarQube, Azure DevOps.
• Guide the transformation and migration of legacy systems (WCF, Asp.Net MVC, MS-SQL) into modern microservices and cloud-native architectures.
• Monitoring and troubleshooting production services for performance bottlenecks and exceptions.
• Assisting software developers with architectural design decisions, bug tracking, and resolving performance issues.
• Foster a culture of continuous improvement, mentoring junior/mid-level engineers, and collaborating closely with QA and DevOps to ensure high-quality, continuous delivery.

What Do We Offer You?

🌍 Global Experience:

With a presence in 90+ countries, you’ll have the opportunity to work on international projects and collaborate with diverse cultures.

📈 Career & Personal Growth:

Through DeFacto Business Academy, you can continuously develop your skills and participate in training programs that support your career.

🔄 Cross-Team Experience & Development:

With our KatKat business development project, you can gain experience in different departments, expand your skill set, and explore new career opportunities.

🏆 Recognition & Rewards:

Your achievements matter! Through our recognition platform, DFLife Plus, you can earn reward points for your successes and redeem them for gifts from our catalog.

💪 Wellness Support:

Thanks to our Multisport partnership, you can access gyms and wellness services at special rates, supporting both your physical and mental well-being.

👶 Family-Friendly Benefits:

For new parents at DeFacto, we provide additional financial support, special leave rights, and a "Welcome Little DeFactonian" gift to celebrate this exciting new chapter in your life.

❤️ Social Responsibility & Volunteering:

Join our "Happiness Ambassadors" and bring your social responsibility projects to life, or take part in existing initiatives as a volunteer.

🤝 Internal Communication & Communities:

Stay connected with all DeFactonians through DFLife Plus, where you can join exclusive events, competitions, and social groups while keeping up with company updates.

Ready to be part of the DeFacto? 🚀

You can reach detailed information on rights arising from the processing of your personal data under Law on the Protection of Personal Data numbered 6698 from Privacy Policy page at https://www.defacto.com.tr