Mid/Senior .NET Software Engineer

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.

Our FinTech project is for the second-largest Greek bank by total assets and the largest by market capitalization of €2.13 billion. It has a subsidiary and branch in London, England and subsidiaries in Albania, Cyprus and Romania.

Key Responsibilities

• Develop, maintain, and enhance backend services and APIs using C# and .NET Framework / .NET Core.
• Implement and integrate with internal and external RESTful Web APIs.
• Work on OAuth2 / OpenID Connect-based authentication and authorization mechanisms.
• Collaborate with architects and business teams to deliver secure and scalable integration solutions.

Required Qualifications

• Proficiency in C# and .NET Framework / .NET Core.
• Experience with API integrations and RESTful services.
• Understanding of OAuth2, OpenID Connect, JWT, and related authentication flows.
• Familiarity with secure coding practices, API security, and data protection.
• Experience with version control systems (Git).

Nice-to-Have Skills

• Knowledge of Open Banking standards (e.g., PSD2).
• Familiarity with microservices, CI/CD pipelines, Postman / Swagger / OpenAPI.
• Understanding of message-based integrations (e.g., Kafka) is a plus.

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.