Senior Python Developer

We are seeking a Senior Python Developer to take full ownership and maintain two critical Python-based derivative valuation systems. You will ensure business continuity, collaborate closely with internal stakeholders, and drive modernization efforts aligned with technology strategy. Join us to contribute your expertise and help shape the future of these essential financial applications. Responsibilities Take end-to-end ownership of two Python backend derivative valuation systems to ensure continuous operation for external users Review existing code, architecture, and integration points to independently understand the systems with limited knowledge transfer materials Maintain and support applications by resolving incidents and ensuring stability with light SLA-based support Collaborate directly with product teams and internal stakeholders to understand requirements and workflows Serve as the primary technical liaison for queries and issues related to these systems Perform debugging, security updates, and incident resolution to maintain application stability Work in an agile environment to deliver incremental solutions and iterate based on business feedback Propose modernization strategies to align systems with broader technology ecosystem and strategy Coordinate with supporting engineers to delegate operational tasks effectively Ensure adherence to security best practices for external-facing applications Document system changes and updates to facilitate knowledge transfer and maintenance Monitor system performance and optimize database queries with SQL Server backend Analyze complex system issues and provide effective solutions Support integration points with other internal tools and maintain robust security protocols Requirements Strong Python development experience with 3+ years working on backend systems involving complex financial or valuation models Proven experience supporting production-grade external-facing applications Proficiency with SQL Server including querying, debugging, and performance optimization Experience with Python frameworks such as Flask, Pandas, and NumPy Ability to reverse-engineer complex systems and rapidly gain ownership with minimal documentation Knowledge of application integration and security protocols Demonstrated ability to collaborate with business clients and translate requirements into technical solutions Experience working in fast-paced agile delivery environments Self-motivated with strong analytical and troubleshooting skills Excellent verbal and written communication skills for client and stakeholder engagement Experience with incident management and application maintenance Ability to propose and drive application modernization initiatives Familiarity with financial domain concepts related to derivatives and valuation models is a plus Nice to have Experience with Azure cloud native development Knowledge of .NET and C# programming Exposure to application modernization techniques and enterprise technology strategies Understanding of security best practices for external-facing systems We offer Improved medical coverage - EPAMers are eligible to participate in a supplementary health insurance program that shall have the usual coverage in the industry, with the Company funding 100% of the value of the monthly premium for participation Lunch Allowance - You will receive a daily allowance of CLP $ 7,000 per working day. Enjoy a nice meal on us Allowance for internet and electricity - You will receive an allowance of CLP $15,000 per month to cover internet and electricity expense National Holiday Bonus - We celebrate joining the Chilean Market. That is why all our employees will receive a bonus of CLP $86,646 in September Christmas Bonus - You will receive an End of Year bonus of CLP $170,539. It will be paid during the month of December, to ensure you have a Happy Holiday Learning Culture - We want you to be the best version of yourself, that is why we offer unlimited access to learning platforms, a wide range of internal courses, and all the knowledge you need to grow professionally Additional Income - Besides your regular salary, you will also have the chance to earn extra income by referring talent, being a technical interviewer, and many more ways Are you open to relocation? - If you want to relocate to another country and we have the right project, we will assist you every step of the way, to help you and your family, reach your new home #J-18808-Ljbffr