SOLUTION DEVELOPMENT ARCHITECT (Sofia, BG)

About Atos Group Atos Group is a global leader in digital transformation with c. 63,000 employees and annual revenue of c. €8 billion, operating in 61 countries under two brands — Atos for services and Eviden for products. European number one in cybersecurity, cloud and high performance computing, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is the brand under which Atos SE (Societas Europaea) operates. Atos SE is listed on Euronext Paris. The purpose of Atos Group 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. Role overview We’re looking for a seasoned Solution Development Architect to design scalable, secure, and maintainable software solutions across multiple business domains. You’ll combine deep .NET echosystem expertise with hands-on leadership in cloud, integrations, and legacy modernization - while also spearheading AI across the organization and clients by identifying product opportunities to embed AI capabilities into products and establishing best practices for responsible and effective use. Key Responsibilities: Own end-to-end solution architecture for .NET-based platforms and products - define target-state architectures, reference patterns, and technical roadmaps aligned to business goals. Design scalable, secure, maintainable systems using appropriate architecture patterns (e.g., modular monolith/microservices, event-driven, domain-oriented design) and enforce sound engineering principles. Lead cloud architecture and engineering alignment (e.g., Azure/AWS/GCP): resiliency, identity/access, security-by-design, observability, and cost-aware architectures. Drive legacy modernization - assess current-state platforms, propose migration approaches, reduce technical debt, and ensure smooth transitions with minimal business disruption. Define integration strategy across internal and external systems (APIs, messaging, data flows), ensuring reliability, performance, and interoperability. Establish architecture governance - standards, reusable components, quality gates, automation, and best practices that improve delivery consistency and maintainability. Lead AI adoption and enablement - identify high-value use cases, embed AI capabilities into products, and implement responsible/secure AI practices and guardrails enterprise-wide Make high-impact technical decisions, align engineering efforts with business goals, and drive the evolution of both software architecture and AI strategy Requirements: Proven experience in solution/software architecture with a strong track record of making high-impact technical decisions and guiding teams across domains. Deep expertise in the .NET ecosystem (C#, modern .NET/.NET Core), including designing reliable, reusable, maintainable codebases and applying architecture patterns effectively. Strong distributed systems background - scalability, performance optimization, concurrency, reliability, and operational excellence (monitoring, incident learnings, resilience). Hands-on cloud experience (Azure/AWS/GCP) with modern engineering practices (CI/CD, containers, IaC, DevSecOps collaboration). Integration and data experience - API design (REST/gRPC), eventing/messaging, and working knowledge of relational and non-relational storage and data flows. AI/GenAI adoption experience - building or integrating AI features (LLMs/GenAI), understanding Responsible AI principles, AI security, and governance best practices. Strong communication and leadership skills - translate business needs into technical direction, mentor engineering teams, and influence stakeholders across product, delivery, and client organizations. The position is located in Sofia, Bulgaria What We Offer: Home office Flexible working hours Medical care incl. dental care, glasses, etc. Life & Disability Insurance Food vouchers Marriage gift Childbirth gift Additional paid leave Discount for sports cards Learning Hub Referral bonus Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all. Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria. Find out more on our CSR commitment. Choose your future. Choose Atos.