Ezequiel H. Martinez Senior data scientist / Data engineer at Cobre

Lead Data Scientist / Data Engineer / Data Architect

Cobre

Jan 2021 - Current (5 years 8 months)

Creation of the complete company’s data strategy. Including the design and creation of their corporate data-lake (13 terabytes), Data Warehouse (10+ DMs) and data pipeline (700+ jobs). Based on: AWS ECR, ECS, Airflow, SQS, CDC (Debezium), Lambdas, Python jobs, DBT and Snowflake. ● Built up of the ETL’s from a cloud of more than 600’s Kubernetes pods with RDS (MySQL) instances, Could Services like SalesForce, Google Analytics, Google Sheets, Zendesk, MixPanel, etc. ● Training and development of several machine learning algorithms for fraud detection, like: Isolation Forest, AWS Fraud Detector and other statistical methods. ● Leading, hiring and mentoring a team of 8+ Data Engineers, ML engineers and Data Analysts.

Senior data engineer / Data scientist

Centro

May 2020 - Jan 2023 (2 years 9 months)

- Successful visualisations and data crunching for the company’s executive board - Successfully delivered online dashboard reports systems for more than 1k corporate clients over several states in the USA - Machine learning engineering and deep learning techniques for the implementation of autoencoders - Design and development of over 300+ ETL’s against Google, Amazon, Facebook and Microsoft’s APIs - Strong usage of SPARK, Snowflake and Pandas over datasets of roughly 3 terabytes of data - Microservices architecture design over streaming techs like Airflow for the handling of 1k+ Jobs

Software architect / Fullstack developer - Android, C# and Java

Solisystems Corp

Jan 2018 - May 2020 (2 years 5 months)

- Development of several POS terminal's applications for an American company, remotely. Coding in Javascript, Java, C#, Knockout, JQuery, MS SQL and Android plataforms - Dealing and designing a microservices architecture, resolving bugs and pumping the company procedures to evolve its development process - Consulting as a Technical Lead and Scrum Master for a team of three people for client Mitrol

Chief operations officer / Scrum master

Mercap

Oct 2016 - Dec 2017 (1 year 3 months)

- Leading the operations for a company of 50 people and main responsible of pushing the operations strategy of the company - Arranging the scrum's sprints, preparing the "plannings" and mentoring the teams for reorganization - aking metrics from the management system (Jira), mailings, invoicing and marketing XLS, for the developing of an ad-hoc a dashboard for the company's CEO In charge of defining and supervising the service management practices of the whole company. Mentoring and coaching of different team members and coder to raise them as team leaders. Coded in Python and Smalltalk for internal usage and production releases

Software project manager / Scrum master / Processes consultant

Deloitte Argentina

Nov 2014 - Oct 2016 (2 years)

- Process consultant/ scrum master at Aeroterra: leading and counseling of all the change management initiatives for a company of 50 people - Directed the implementation of scrum/kanban practices - Imbued the implementation of TDD and Lean for product design - Coding in Python for the team's performance data analysis. Developed a few PoC's in NodeJS - Project Manager at Cargill Main responsible for Cargill for a project of 1.5 MM u$d budget, 64 people involved and a top strategic portfolio - Introduced agile practices, delivered over 60 use cases into production stage, managed more than 15k man/hours worth of effort for a geographically disperse team, which included: inner provinces of Argentina, Venezuela and USA. Strong usage of Microsoft

Java & .NET Technical consultant / Big data community champion / Onsite coordinator

Microsoft

Aug 2012 - Oct 2014 (2 years 3 months)

- Data Science champion for Argentina planning and participating on evangelization efforts over Microsoft's Big Data and machine learning support technologies (Hortonworks, Power Pivot, Azure ML, etc) - Microsoft technical entrepreneurship advisory worked with start-ups in the evolution of their business over the usage of Microsoft tools, support plans and providing personalized management coaching Legacy Systems Migration Specialist at Itau/Bradesco Responsible for the elicitation of requirements, architectural evaluation, risk evaluation, project projections, estimates and solution architectural design for the migration of Microsoft Legacy system technologies (Visual Basic 3/4/6, .NET framework 1,2, and others) and Java related techs. Coo

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Software project manager

Cognizant -> client: Teletech

Feb 2011 - Aug 2012 (1 year 7 months)

- Project solutions manager at Teletech Argentina Responsible for the design and development of a portfolio of five projects for the product Empower Datamart, performing as a data analyst and warehouse design - We made strong usage of DTSx and Pentaho - I was responsible of project management activities for a portfolio of up to five different project for a set budget of half a million u$d

Principal consultant / Java trainer / Program manager

Cognizant Technology Solutions

Mar 2008 - Nov 2010 (2 years 9 months)

- Project and Service Manager at Merck Argentina modeled and delivered five systems into the ITIL's services management practice - Handled the development teams and managed the project portfolio for all the evolutives Principal Technical Consultant at Nokia Siemens Brazil defined, modeled and coordinated the teams for the BPM services to coordinate the VOIP calls that came to the HiQ8000's for Rio, Minas Gerais and Sao Pablo. In charge of architecture definition, java programming and onsite requirement elicitation Head of Practice and Trainer at Cognizant's Academy defined, hired and trained a team of twenty professionals in Java technologies. Trained them to develop their skills as full stack developers (HTML, JavaScript, Java, SQL, frame

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Senior Java architect / Java technical leader / Business intelligence analyst

Intersoft SA -> Client: CDT -> Synapsis

Feb 2007 - Mar 2008 (1 year 2 months)

Project: SDOQ Atelier Java # PSA Peugeot Citröen Technical Leader - Software Project for production quality control of car parts. Strong team formation, leading and resolution of conflicts. Development under Java, Javascript (GWT), SQL, HTML4 and other fullstack techs of the time. Usage of PMI standards and Agile Project: Synergia 4J Module: Business Intelligence # Endesa/Codensa Chief Architect BI – Design of BI solutions and implementation of Pentaho Suite, providing +300 indicators to Codensa senior executives (Colombia)

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Senior Java architect / Product manager

Intersoft SA -> Client: CDT -> Synapsis

Mar 2005 - Feb 2007 (2 years)

- Product manager and lead for the development of the web version of Denarius - Worked as a developer with Java, PL/SQL, JSF, Struts, JBPM, JavaScript and all the basic web technologies of the time - Lead and developed a team of five programmers Assessed and managed the products of an M&A with a small start-up: PRODA software. Won a budget extension from FONTAR; a hedge fund maintained by the government for raising stars in technology

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Technical leader of Java teams

TGV -> clients: Santander Rio / HSBC / Conceptum / Banorte

Aug 2002 - Feb 2005 (2 years 7 months)

- I was in charge of the development team for projects for the United Nations, Banorte and OSDE - Developed a machine learning algorithm in Java for a thesaurus of the College of Pathologist of Chicago Coded in Java, Struts, JBPM, Javascript and HTML. Fullstack

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Technical leader of PHP teams / Java developer

Sintesoft S.A. -> Client: Telecom Personal / HSBC

Feb 1999 - Jun 2002 (3 years 5 months)

- I was in charge of the development team for projects for the United Nations, Banorte and OSDE - Developed a machine learning algorithm in Java for a thesaurus of the College of Pathologist of Chicago Coded in Java, Struts, JBPM, Javascript and HTML. Fullstack

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CEO / Entrepreneur / Co-Founder

Nibbled Soluciones Informaticas -> clients: Anillan, Chevallier

Apr 1998 - Dec 1998 (9 months)

- I was in charge of the development team for projects for the United Nations, Banorte and OSDE - Developed a machine learning algorithm in Java for a thesaurus of the College of Pathologist of Chicago Coded in Java, Struts, JBPM, Javascript and HTML. Fullstack

Freelance data entry

Pirelli

Feb 1997 - Mar 1997 (2 months)

Ezequiel H. Martinez

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