We are looking for an experienced Lead Python Developer to join PT. Kredit Utama Fintech Indonesia's team. The role sits within the Technology department, contributing to the development and upkeep of financial technology solutions. This is a contract position located in Kemayoran, Jakarta utara. Key responsibilities include designing, developing, and implementing efficient and scalable Python-based backend services or data processing pipelines as required, as well as conducting code reviews, testing, and debugging to maintain software quality and reliability while supporting CI/CD pipeline improvements. The developer will write clean, well-documented code following best practices and industry standards, maintain audit trails in compliance with OJK regulations, collaborate with cross-functional teams to turn requirements into robust technical solutions, stay current with the latest Python frameworks, libraries, and technologies, and provide technical support and guidance to other team members as needed. Requirements: a Bachelor's degree in Computer Science, Information Technology, or a related field; a minimum of 2 years of hands-on experience as a Python Developer or equivalent skills; strong experience with regulatory data (not regulatory apps); proficiency in Python programming including frameworks such as Django, Flask, or FastAPI; extensive hands-on experience building, training, tuning, and deploying machine learning models with expert-level proficiency in XGBoost; deep knowledge of AI and ML fundamentals covering supervised learning, model evaluation metrics, bias–variance tradeoffs, and overfitting/underfitting; experience with large-scale datasets and distributed computing frameworks (e.g., Dask, Spark) used alongside XGBoost; familiarity with MySQL optimization and event-driven architecture (Kafka/RabbitMQ); and a solid understanding of REST API best practices. Full WFO in Jakarta Pusat / BSD Tangerang. Willing to work in Banking.

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