Senior AI Python Engineer Mission: To empower financial organizations with intelligent, data-driven solutions that simplify complexity, enhance transparency, and deliver tangible value across the credit and financial ecosystem. As a key Python engineer, you will collaborate with AI and data teams to bring innovative fintech ideas into production, shaping systems that support millions of users while continuously learning and growing your own skills.---humani is proud to partner with one of Greece’s leading fintech technology groups. With over 20 years of experience, the company is recognized as a top provider of advanced fintech solutions across South and Central Europe, delivering scalable enterprise platforms in more than 35 countries. Its solutions empower Banking, Financial Services, Utilities, Insurance, and Retail organizations, combining technology, data intelligence, and financial innovation.The organization is known for developing sophisticated systems that simplify complex processes, enhance transparency, and provide real value throughout the financial ecosystem. Its culture combines technological ambition, integrity, collaboration, and a commitment to continuous growth.---ResponsibilitiesDesign, develop, and maintain Python-based backend systems.Collaborate with data scientists and ML engineers to integrate machine learning models into production systems. Build and maintain RESTful APIs and backend services powering fintech products. Participate in multi-tenant service development, ensuring secure and reliable data handling. Ensure code quality through comprehensive unit, regression, e2e and mutation testing, code reviews, and adherence to best practices. Mentor junior developers on Python development.Monitor and improve application performance, scalability, and security.4–6 years of Python back end development experience.Strong skills in secure API design, async/event-driven systems, like FastAPI.SOLID Principles - Design PaternsFamiliarity with CI/CD pipelines, and cloud platforms (AWS, Azure) is a plus.Familiarity with containerization. Proven ability to write clean, maintainable, and well-tested code.Strong analytical and problem-solving skills, with the ability to work independently and in a team. Bachelor's or Master’s degree in Computer Science, Engineering, or related fields.Excellent communication skills in English, both verbal and written.Experience in the Fintech or Banking industry is advantageous.Willingness to mentor junior developers and contribute to team growth.Basic understanding of algorithms, machine learning concepts, and model optimization techniques. What the Company OffersCompetitive salary package 3200 - 3500 gross euros monthly Meal benefits: Ticket restaurant (120 euros x 12) and annual bonus programs.Private health insurance and onsite occupational doctorCutting-edge IT equipment, mobile, and data plan.Modern facilities, free coffee, beverages, and indoor parking.Onsite gym, wellness facilities, and ping pong room.Flexible work arrangements curently on 50% - 50% ratio working from homeABOUT US:Founded in 2018, HumanI is an Executive Search firm, satisfying the needs of organizations for C-level, Senior and Middle positions, or specialised projects in the Engineering and Software functions. In parallel, through our partnerships we support HR Digital Transformation initiatives and build data analytics to facilitate informed decision making. Our competitive advantage stems from the collaboration of diversified people with backgrounds in HR, Psychology, Coaching, IT and Finance.Our brand “HumanI”, stands for Human Intelligence, encompassing our belief that no matter how multifaceted, digitally advanced or artificially intelligent a system may seem, it will always be a creation of 𝗛𝘂𝗺𝗮𝗻𝘀. This human aspect and ethical part of our work makes us unique in what we do. Ethical Headhunting; treating our candidates as our true clients, investing time and effort, consulting them on their careers. Supporting our companies as genuine strategic partners, investing in understanding their own internal needs and market trends.Each person is 𝗨𝗡𝗜𝗤𝗨𝗘 to us. After all, talent resides in deviations; embracing it, is the only way forward.Become follower of our LinkedIn to get hand picked top level jobs and articles of your interest: https://www.linkedin.com/c Mission: To empower financial organizations with intelligent, data-driven solutions that simplify complexity, enhance transparency, and deliver tangible value across the credit and financial ecosystem. As a key Python engineer, you will collaborate with AI and data teams to bring innovative fintech ideas into production, shaping systems that support millions of users while continuously learning and growing your own skills.---humani is proud to partner with one of Greece’s leading fintech technology groups. With over 20 years of experience, the company is recognized as a top provider of advanced fintech solutions across South and Central Europe, delivering scalable enterprise platforms in more than 35 countries. Its solutions empower Banking, Financial Services, Utilities, Insurance, and Retail organizations, combining technology, data intelligence, and financial innovation.The organization is known for developing sophisticated systems that simplify complex processes, enhance transparency, and provide real value throughout the financial ecosystem. Its culture combines technological ambition, integrity, collaboration, and a commitment to continuous growth.---ResponsibilitiesDesign, develop, and maintain Python-based backend systems.Collaborate with data scientists and ML engineers to integrate machine learning models into production systems. Build and maintain RESTful APIs and backend services powering fintech products. Participate in multi-tenant service development, ensuring secure and reliable data handling. Ensure code quality through comprehensive unit, regression, e2e and mutation testing, code reviews,