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Data Analyst and Software Developer I am a Software Engineer (14+ years exp.), and I help companies with their Data Analytics and scale their backend without the overhead of a full-time hire. Quick wins I’ve delivered: ● Reduced data processing time from 2 weeks to 4 hours (Telefónica). ● Optimized cloud costs by $7k+/month (JetMultimedia). ● Built systems generating $1,7M+ in revenue. I operate through my US LLC, making the B2B contracting (1099) seamless. I’m currently looking for a new project—do you have any bottlenecks in your roadmap where an extra pair of hands could help this month? Best regards, Alejandro D. Bakker Antezana…Data Analyst and Software Developer I am a Software Engineer (14+ years exp.), and I help companies with their Data Analytics and scale their backend without the overhead of a full-time hire. Quick wins I’ve delivered: ● Reduced data processing time from 2 weeks to 4 hours (Telefónica). ● Optimized cloud costs by $7k+/month (JetMultimedia). ● Built systems generating $1,7M+ in revenue. I operate through my US LLC, making the B2B contracting (1099) seamless. I’m currently looking for a new project—do you have any bottlenecks in your roadmap where an extra pair of hands could help this month? Best regards, Alejandro D. Bakker Antezana

Alejandro Dimitri Bakker Antezana

Full Stack Developer, Web Developer, Back-End Developer, +3

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Data Analyst and Software Developer I am a Software Engineer (14+ years exp.), and I help companies with their Data Analytics and scale their backend without the overhead of a full-time hire. Quick wins I’ve delivered: ● Reduced data processing time from 2 weeks to 4 hours (Telefónica). ● Optimized cloud costs by $7k+/month (JetMultimedia). ● Built systems generating $1,7M+ in revenue. I operate through my US LLC, making the B2B contracting (1099) seamless. I’m currently looking for a new project—do you have any bottlenecks in your roadmap where an extra pair of hands could help this month? Best regards, Alejandro D. Bakker Antezana…Data Analyst and Software Developer I am a Software Engineer (14+ years exp.), and I help companies with their Data Analytics and scale their backend without the overhead of a full-time hire. Quick wins I’ve delivered: ● Reduced data processing time from 2 weeks to 4 hours (Telefónica). ● Optimized cloud costs by $7k+/month (JetMultimedia). ● Built systems generating $1,7M+ in revenue. I operate through my US LLC, making the B2B contracting (1099) seamless. I’m currently looking for a new project—do you have any bottlenecks in your roadmap where an extra pair of hands could help this month? Best regards, Alejandro D. Bakker Antezana

Available to hire

Madrid, Spain

Data Analyst and Software Developer

I am a Software Engineer (14+ years exp.), and I help companies with their Data Analytics and scale their backend without the overhead of a full-time hire.

Quick wins I’ve delivered:

● Reduced data processing time from 2 weeks to 4 hours (Telefónica).
● Optimized cloud costs by $7k+/month (JetMultimedia).
● Built systems generating $1,7M+ in revenue.

I operate through my US LLC, making the B2B contracting (1099) seamless. I’m
currently looking for a new project—do you have any bottlenecks in your roadmap where an extra pair of hands could help this month?

Best regards,

Alejandro D. Bakker Antezana

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Spanish; Castilian

Fluent

Dutch

Intermediate

Work Experience

Senior Software Developer at OTTO Group / one.O [OSP] - O-TTO Group

June 1, 2022 - February 1, 2026

Development, integration, deployment, maintenance, monitoring and improvement of internal projects across the OTTO Group. Worked on one.O platform services, responsible for end-to-end lifecycle including integration, deployment and ongoing monitoring. Technologies include AWS and major cloud/data tools, CI/CD, containerization, infrastructure as code, and backend services using Java/Spring Boot and other JVM and scripting languages.

Senior Developer at ÖSD Group

June 1, 2022 - October 1, 2022

Migrate, improve, develop, and deploy functionalities of the CRM and Back Office Systems. Migrating from Perl to modern PHP versions, JavaScript, optimizing SQL queries and MSSQL Server Stored Procedures, creating new APIs, migrating and optimizing old APIs, refactoring backend projects like ERP, CRM, DealerCare, InstallCare, etc.

Senior Software Developer at OTTO Group (OSP)

June 1, 2022 - February 1, 2026

Development, integration, deployment, maintenance, monitoring, and improvement of internal projects for the OTTO Group; working in one platform environment. Involves cloud technologies, CI/CD, APIs, and backend/frontend components across multiple internal initiatives.

Senior Developer at DIGI Spain Telecom

November 1, 2020 - June 1, 2022

Migrated, improved, developed and deployed CRM and Back Office functionalities. Migrated from Perl to newer PHP versions, optimized SQL queries and SQL Server stored procedures, created new APIs, and refactored and optimized legacy APIs. Worked across backend projects such as ERP, CRM, DealerCare and InstallCare.

Senior Developer at Söderberg & Partners

June 1, 2020 - October 1, 2020

Improved, extended and released a digital household budget tracker. Developed APIs, extended functionality and optimized the MySQL database and the budgeting website. Also contributed to a new version of the mobile application for a fast-growing fintech enterprise in the Netherlands as part of a Swedish multinational company.

Senior Developer at SIC Group

May 1, 2020 - October 1, 2020

Improve, extend, and release the new version of a complete digital household budget tracker; develop APIs, extend functionalities, and optimize the MySQL database of the budgeting website; deliver the new mobile application version as part of a Swedish multinational company.

Senior Developer at Telefónica / Movistar

April 1, 2019 - June 1, 2020

Improve tasks that previously took weeks to deliver, reducing timelines significantly; upgrade Learning Management Systems and provide services for thousands of end users.

Senior Developer at ECIX Group

May 1, 2018 - February 1, 2019

Developed software integrating the world of law and compliance with the technological world. Contributed to engineering efforts with backend services and API development aligned to compliance workflows.

Web Developer / Developer at Accenture (mentioned within resume)

January 1, 2018 - May 1, 2018

Upgraded Learning Management Systems to serve thousands of end users for non-governmental organizations such as Caritas, Red Cross, etc.

PHP Developer at Accenture (Grupo Digital)

January 1, 2018 - May 1, 2018

Upgraded and improved multi-tenant LMS Moodle systems for non-governmental organizations via Accenture Foundation. Developed new custom functionalities for the Moodle platform.

Developer at Accenture

January 1, 2018 - May 1, 2018

Upgrading many Learning Management Systems and delivering services for thousands of end users; implementation and integration of LMS-related features.

Developer at Vicinity Group

January 1, 2018 - May 1, 2018

Design and implement algorithms and Stored Procedures for the New Accounting and Billing System; create new APIs; migrate and optimize old APIs for ERP, CRM, DealerCare, InstallCare, etc.

Senior Web Developer at Global Technology Support GTS

May 1, 2016 - December 1, 2017

Created and improved custom websites for professionals and small companies. Worked with typical LAMP-stack web development and CMS customization.

Manager, EcoSol at EcoSol

December 1, 2013 - April 1, 2016

Managed and oversaw a small family business including customer relationships, human resources, economic re-sourcing, products and stocks, and tools. Managed the company’s own management systems and Microsoft Office-based operations.

PHP Developer at KINEO

October 1, 2012 - December 1, 2013

Developed and maintained customized Learning Management Systems with functionality for various customers based on Totara and Moodle. Implemented server-side components, database logic and reporting support.

Programmer (Events Management System) at Soi ts a I nte sy s (company not clearly extracted)

August 1, 2011 - March 1, 2012

Designed and developed new Event Management Systems for the group standing. Migrated from a simple centralized MS Access desktop application to a portal with three access gates/levels (customers, employees, managers) and implemented account/profile handling, event detail options, and a clearer billing process.

Programmer (Intranet / Back Office systems) at Jet Multimedia

October 1, 2010 - July 1, 2011

Developed and upgraded intranet back office systems including new account and billing system. Implemented ETL processes for incoming data, analyzed processing steps and results, and created highly optimized stored procedures. Assisted in encrypting subscription consents reliably and securely while ensuring compliance requirements through cloud technology.