Jaime Gutiérrez Sánchez
Senior Python Developer | Tech Lead
Salary / Daily rate
Madrid, Spain
Freelance
Remote only
Skills
Languages
About me
Intro
Senior Python Developer and Tech Lead with 13+ years of experience in banking and financial environments. Successfully developed ML-based marketing automation solutions at BNP Paribas and led critical COBOL/DB2 systems for major banks. Expertise in optimizing data pipelines, implementing APIs with FastAPI, and providing technical leadership in Scrum environments, delivering scalable solutions that drive business value.
Work experience
BNP Paribas Personal Finance
Oct 2018 - Present
8 years 1 month
Hybrid
🔹 Senior Python Developer | Tech Lead – BNP Paribas Personal Finance
Oct 2020 - Present
6 years 1 month
Hybrid
- Developed Python-based software for Machine Learning in marketing automation. - Designed and implemented new functionalities in banking and financial environments. - Applied OOP principles and design patterns to enhance code scalability and maintainability. - Optimized and validated data using Pandas, Polars, and Pydantic. - Implemented unit testing with Pytest and improved code quality. - Developed APIs with FastAPI, leveraging Pydantic for data validation. - Provided technical leadership, supported developers, and refined user stories in a Scrum environment.
🔹 COBOL Analyst & Senior Developer – BNP Paribas
Oct 2018 - Oct 2020
2 years 1 month
Hybrid
Client/Project (start/end date): Cetelem. Bucharest, Romania (October 2018 – October 2020) Professional Category: Senior Cobol Developer. Application: SICLID. Main function: - Analyst, developing and maintenance banking systems using COBOL, JCL, DB2, and CICS for batch and online (COBOL, DB2, CICS, JCL). - Analyzed and resolved incidents in critical financial environments. Tools/Technologies: TSO (COBOL, DB2, CICS, JCL) IDz, Changeman...
Analyst COBOL and JCL Mainframe Application Developer (AI): Client BBVA Bank
Sopra HR Software España
Dec 2014 - Aug 2016
1 year 9 months
Avenida de Manoteras, 48, 28050 - Madrid
Client/Project (start/end date): BBVA (December 2014 – August 2016) Professional category: Programmer analyst. Application: HR Access Principal functions: Analysis, design, developing and support of mainframe applications using COBOL, JCL and DB2 for HR access., Analysis and troubleshooting. Tools/ Technological environment: TSO(COBOL, DB2, CICS, JCL), IDz, HR Access.
Developer Mainframe COBOL/CICS/DB2 y JCL (AI): Client Infocaja S.A.
2C CONSULTING
Oct 2010 - Dec 2014
4 years 3 months
Madrid, Spain
Client/Project (start/end date):Infocaja S.A (December 2014 – August 2016) Professional category: Senior Cobol and JCL Mainframe Application Developer (AI) Application: Common modules (Taller de Comisiones, Taller de Productos, T. Corporativas y Arquitectura) Principal functions: - Analysis, maintenance and Mainframe Application Development using TSO (COBOL, JCL DB2 and CICS (Alnova) )for banking sector: Commissions and Products, Corporate tables and in the last period Architecture. - At last years fusion project of five banks like Banco Mare Nostrum y LiberBank. Analysis, developing , management of migration data for Commissions and Products, Corporate tables and Architecture application. - Support 7/24 for Commissions and Products, Corporate tables and electronic banck application. Tools/ Technological environment: TSO(COBOL, DB2, CICS, JCL), IDz, Changeman, CONTROL-M Business or sector Software development | Consulting | Engineerin
Technician
Canacris
Aug 2008 - Jan 2010
1 year 6 months
20126 Cristinacce, France
Technical and Administrative civil works communications CanalCris S.L., Camino del cerro 4, 06476 Cristina, Badajoz (Spain) +34 92 43 50 726. ▪ Control of civil works communications, security of workers and materials. Business or sector Administrative | Engineering
Technician
acustilab
Oct 2007 - Aug 2008
11 months
06700 Villanueva de la Serena, Badajoz, Spain
Technician acoustic measurement ACUSTILABX. S.A. C/ Hernán Cortés, 171, 06700 - Villanueva de la Serena, Badajoz (Spain) http://www.acustilabx.com/ ▪ Technician acoustic measurement according of current regulations. Business or sector Administrative | Engineering
Education
UNED, Juan del Rosal, 14, 28040 Madrid http://www.uned.es
Course game 2D development with Unity
2014 - 2015
1 year 1 month
Academia integral, San Lorenzo, 2-2 29001 Málaga, http://www.academiaintegral.com.es/index.html
Online Course game development. (180 h)
2013 - 2013
1 month
Csi Csif Extremadura, Alange Road, 7, 06800 Mérida, Badajoz (Spain)
Online Course game development. (180 h)
2010 - 2010
1 month
Universidad de Extremadura
Telecom technical engineer
2002 - 2007
5 years 1 month
Licenses & certifications
Introduction to Software Engineering
Issued: Feb 2024
Influir en las personas
Issued: Jan 2024
Scrum: The Basics
Issued: Jan 2022
Scrum: Advanced
Issued: Jan 2022