Sajia S.

Paris Region, France

RATP, Paris / Data Architect - team of 4 people

SERVAL: application for aggregation and analysis of train logs (RER A) aimed at feeding the CMMS for predictive/preventive maintenance

- Evolution and operational maintenance of the SERVAL application

- Data ingestion with StreamSets and backup on HDFS

- Transformation and aggregation of logs with Apache Spark and persistence of results in PostgreSQL

- Development and industrialization of prediction programs based on artificial intelligence and statistical prediction models in Scala and PySpark

- Participation in the choice of Machine Learning algorithms to create new forecasts in collaboration with the Data Scientist team

- Automation of testing and production deployment with Ansible

- Design and deployment of a data mining application in Scala, Spring Boot, and ThymeLeaf

- Development of a data purging strategy for PostgreSQL and backup to HDFS in ORC format for use with HIVE

- Writing and maintaining technical specifications on Git

- Development and provision of KPIs for display in Qlik Sense

- Maintaining the Spark Cluster in operational condition

Databases: PostgreSQL 9, HIVE,

Hadoop Ecosystem: HDP 2.6, Hue, Spark 2.3,

Languages & Frameworks & Standards: Scala 2.11, PySpark, Python, Java 8, HTML, CSS, Spring Boot 2.0.2, FlywayDb, Spring, SpringBoot, Hibernate, Wiremock, Jenkins Pipeline, ScalaNLP, scalatest, spark-core, spark-hive, spark-sql, spark-streaming, spark-mllib, Kafka, Storm, Pandas, Numpy, Sklearn

Cloud: AWS, S3, EMR

Tools & Systems: GitLab, Maven, SBT, StreamSets, Ansible, AirFlow, beeline, Pig, Ozie, parquet, Orc, Avro, Bash,

SOCIETE GENERALE, La Défense / Technical Referent - team of 8 people

KYC (Know Your Customer): International client monitoring and tracking system

- Redesign of the KYC application

- Code review

- Ensuring compliance with Scrum recommendations

- Facilitating and leading retrospectives

- Ensuring the achievement and implementation of measures validated during retrospectives

- Development of new functionalities and features

- Implementation of Unit and Integration tests

- Ensuring code coverage

- Implementation of an ELK stack (Elasticsearch, Kibana, Logstash, Zipkin)

- Docker migration from PaaS to CaaS orchestrated by Kubernetes

Databases: PostgreSQL 9, JsonB, Elasticsearch,

Languages & Frameworks & Standards: Java 1.8, Spring Boot 2.0.2, Mockito, FlywayDb, Spring, SpringBoot, Hibernate, Wiremock, Jenkins Pipeline,

Tools & Systems: Docker Ucp, Swarm, Jjira, Slack, Nexus, Maven, Kibana, logStash, ZipKin, Dbeaver,

Paris

- Design, development, implementation, and monitoring of the reporting product

- Maintaining a global vision of the tool and anticipating future needs

- Monitoring and prioritizing developments and evolutions in conjunction with management

- Technological watch and reasoned recommendations on architecture

- Documentation of the solution (Architecture, installation and maintenance procedures, code versioning)

- Carrying out developments while respecting the schedule, costs, maintainability, load capacity, security, and quality

- Maintaining operational condition and N3 support for teams

- Cost control associated with the tool (costs, deadlines, failure rates, ...)

- Contribution to the security of the tool (BCP/DRP, Monitoring)

- Installation and maintenance of the technical architecture in operational condition

- Active contribution to technical supervision and payment systems products

Databases: Cassandra 3.11.2, mysql v15.1 Distrib 10.1.34-MariaDB, mongoDB 3.6.3

Languages & Frameworks & Standards: Java 1.8, Spark 2.3.0, Angular 6, Angular Material 6.3.2

Typescript 2.7, Scripting, Bash, Php 7, Spring Boot 2.0.2, Google Charts, HTML 5, CSS 3

Bootstrap 4, Aggregation pipeline operations for MongoDB, SQL stored procedure, ...

Libraries (Java & Node & PHP): Datastax-Spark-Cassandra-Connector 2.3.0, Express 4.13, Karma 2, Mocha 2, Jasmin 1.1, Protractor 5.3, Spring Boot Tests, Gson 2.8.5, Nodemon 1.17, Mongoose 5.3, interoperable JavaScript promises “Q” 1.4.1, libreworks/ext-mongodb-hhi 1.2, phpoffice/phpspreadsheet 1.4, ...

Servers & Containers: Tomcat 8, Node 8.11.1, Nginx 1.14.0

OS: Ubuntu Server v18.04, vSphere ESXI 6.5.0

Tools & Systems: MongoChef 4.4.2, Mysql Workbench 6.3, Intellij Utimate 2017.02, Maven 3.5.9, Git 2.17.1, Node version management 2.1.7, NPM 5.6.0, Yarn 1.10.0, Webpack 3.10, Json web token, Apache Zeppelin, Redmine, jira, Slack, .,