.NET Engineer (AI & Database Expertise)

Code.Hub is a leading Tech Recruitment, Learning & Development, Extended Team and Project Delivery partner in Greece. Since 2017, Code.Hub has been helping organizations build and scale high-performing technology teams, while supporting Software Engineers in developing their skills and growing their careers. With expertise across modern technologies and digital transformation projects, Code.Hub collaborates with leading organizations in FinTech, Banking, Insurance, Gaming, Telecommunications and Consulting, providing services and solutions in technology, consulting, software delivery and operations. Code.Hub has built one of the strongest tech ecosystems in Greece, managing large-scale technology projects and supporting companies through specialized recruitment and upskilling solutions. In 2026, Code.Hub was certified as a Great Place to Work®, while also receiving HR Awards distinctions for Talent Management, Recruitment Strategy, Mentoring and Learning & Development initiatives, highlighting the company’s strong investment in people growth, innovation and employee experience. You will be joining a fast-growing GameTech project, among the largest and most innovative in the world, active in 19 international markets and counting. Our partner offers a wide range of digital entertainment services to millions of users and is known for continuously investing in cutting-edge technologies. The team is diverse, multinational, and driven by a strong vision for inclusive growth, with operations across three continents and a workforce of over 2,700 professionals. Key Responsibilities Design and implement robust, scalable backend services using C#, ASP.NET Core, and .NET 8.Deliver features end-to-end, from technical design and architecture to implementation and production support.Develop and maintain high-availability systems operating at large scale with real-time workloads and significant data volumes.Work extensively with MS SQL Server and distributed database architectures, ensuring high performance, scalability, and reliability.Support and accelerate database code review processes through AI-driven approaches and engineering best practices.Design extensible and scalable data models that serve multiple downstream consumers and business domains.Define partitioning strategies to prevent data skew and ensure privacy-aware data isolation.Architect data models optimized for distributed compute performance, latency, durability, and infrastructure cost efficiency.Evaluate and articulate when to use NoSQL vs. RDBMS solutions, as well as Batch vs. Streaming architectures, based on technical and business requirements.Work with technologies such as Redis, RabbitMQ, ElasticSearch, and distributed systems platforms.Contribute to system design decisions and provide end-to-end technical approaches for highly complex and large-scale scenarios.Deliver high-quality, error-free solutions that maintain or improve overall system performance.Collaborate closely with cross-functional Agile teams, participating in peer reviews, technical discussions, and continuous improvement initiatives.Research and adopt emerging technologies, AI capabilities, and architectural patterns to improve development workflows and platform scalability.Promote software engineering excellence through clean code practices, maintainability, testing, and CI/CD methodologies. Required Qualifications B.Sc. or M.Sc. in Computer Science, Software Engineering, or a related technical field.Strong professional experience in backend software engineering using the Microsoft .NET ecosystem.Advanced proficiency in C#, ASP.NET Core, RESTful APIs, and modern backend development practices.Strong expertise in MS SQL Server and solid understanding of both SQL and NoSQL database technologies.Experience designing scalable distributed systems and complex data architectures.Good understanding of system design, infrastructure, scalability, and performance optimization principles.Ability to solve highly complex technical problems with a strong ownership mindset.Hands-on experience with source control systems, software design patterns, and architectural best practices.Experience working with messaging systems and asynchronous architectures such as RabbitMQ.Familiarity with technologies such as MS Orleans and CockroachDB will be considered a strong plus.Strong understanding of distributed data processing concepts, including partitioning strategies and distributed compute optimization.Ability to evaluate architectural trade-offs considering performance, latency, durability, scalability, and cost.Experience or strong interest in AI-enabled engineering workflows and backend AI capabilities.Comfortable working in Agile environments and collaborating effectively within multinational teams.Excellent communication skills in English, both written and verbal.A proactive, self-motivated attitude with strong analytical and problem-solving capabilities. Nice-to-Have Skills Experience working in high-traffic, customer-facing platforms serving millions of users in real-time environments.Exposure to AI-assisted development tools, intelligent automation, or machine learning concepts applied to software engineering workflows.Familiarity with event-driven architectures and large-scale distributed systems operating across multiple services and domains.Knowledge of cloud-native technologies and containerized deployments in modern production environments.Experience contributing to technical leadership activities, including architecture reviews, mentoring, and engineering best-practice initiatives. Let’s Talk About Us Hybrid working model.Signing Bonus.Brand new equipment.Exciting & friendly work environment.Career & competencies’ development.Continuous learning & development experience based on infinity model through Code.Hub’s Code.Learn.L&D plan for your career improvement.A truly open, inclusive, and competitive-free environment to grow your skills and have fun!Internal competitions & rewards. Let’s Talk About Code.Hub-ers You are eligible to free LinkedIn trainings.You are eligible to have free pass to all training Code.Learn activities after 6 months from your induction.Training & Tech Mentor for your induction.Unlimited access to LinkedIn Learning platform (1st semester).Sponsoring of a Bachelor and/or Master’s Degree from Athens Tech College.Private Health Insurance.Performance planning each six months and each two years planning of promotion.Cocktail Fridays @ our offices.Referral Bonus.