Marcus Walldén, Phd Email & Phone Number

Zurich, Switzerland

Working as a Senior Software Engineer on the Android Messages app, focusing on delivering tailored analytics solutions to the organization and Google as a whole.

Zurich, Switzerland

Worked as a Software/Data Engineer on Android's communication applications (Messages and Dialer) building analytics infrastructure and custom-built data products to better understand engagement, service reliability, do A/B testing, etc.* Lead efforts to improve data quality in the analytics stack. Through employing various data cleaning and reduction techniques and multiple OLAP cubes we could reduce dimension cardinality by up to 96%, reduce storage usage by an order of magnitude for… Show more Worked as a Software/Data Engineer on Android's communication applications (Messages and Dialer) building analytics infrastructure and custom-built data products to better understand engagement, service reliability, do A/B testing, etc.* Lead efforts to improve data quality in the analytics stack. Through employing various data cleaning and reduction techniques and multiple OLAP cubes we could reduce dimension cardinality by up to 96%, reduce storage usage by an order of magnitude for some datasets, and reduce dashboard query latencies by 95% for our most used dashboard.* Lead Messages privacy on analytics and data processing related matters. Continuously collaborated together with central privacy teams and legal to develop new processes and data retention policies for Messages and Dialer, and enabled many new analytics insights to better understand engagement, retention, and cross-app RCS usage.* Optimized data pipeline schedules (based on business requirements) which resulted in 60% reduction to data pipeline cost.* Awarded the Messages Engineering Excellence award in 2023. Show less

Stockholm, Stockholm County, Sweden

* Lead evaluation, design, technical discussions with external vendors, and development of new Airflowenvironment on AWS, using services like EC2, ECS, ECR, EFS, RDS, and Elasticache.* Constructed ELT pipelines to ingest data from 100s of tables and multiple source systems into Snowflakeusing Airflow, Python, dbt, and SQL. Lead efforts to automate logic related to the ingestion.* Supervised and mentored multiple master student interns on new ML initiatives at… Show more * Lead evaluation, design, technical discussions with external vendors, and development of new Airflowenvironment on AWS, using services like EC2, ECS, ECR, EFS, RDS, and Elasticache.* Constructed ELT pipelines to ingest data from 100s of tables and multiple source systems into Snowflakeusing Airflow, Python, dbt, and SQL. Lead efforts to automate logic related to the ingestion.* Supervised and mentored multiple master student interns on new ML initiatives at Qliro.* Lead design, cost analysis, and implementation of dbt infrastructure using dbt, Airflow, GitLab CICD, Amazon ECR, ECS, and Fargate. Show less

Osaka, Japan

I worked on research related to a joint collaborative program with Osaka University. In addition, I worked on developing a novel deep learning biotech solution for upcoming products. This project focused heavily on feature engineering.

Osaka, Osaka, Japan

* I conducted research in multiple areas of high performance computing (HPC) and machine learning, spanning from distributed large-scale volume rendering to numerical fluid dynamics simulations running on 100s of nodes. * Heavily utilized C++ (MPI, OpenMP, CUDA) and Python (Keras, Pandas, etc.).* Initiated multiple international collaborative projects with domain experts in high performance computing and fluid dynamics.* Coached and supervised master students on machine… Show more * I conducted research in multiple areas of high performance computing (HPC) and machine learning, spanning from distributed large-scale volume rendering to numerical fluid dynamics simulations running on 100s of nodes. * Heavily utilized C++ (MPI, OpenMP, CUDA) and Python (Keras, Pandas, etc.).* Initiated multiple international collaborative projects with domain experts in high performance computing and fluid dynamics.* Coached and supervised master students on machine learning and HPC research.* Co-authored papers relating to HPC, big data, and machine learning. Show less

Stockholm, Sweden

I was responsible for monitoring and restoring a large-scale network infrastructure spanning Sweden and a handful of other countries. I worked in a cooperative environment and coordinated installations of network equipment, configuration changes, and repairs with some of the biggest internet service providers and contractors in Sweden.

Doctor Of Philosophy - Phd, Computer Science

Master'S Degree, Computer Science

Master Of Science In Engineering, Information Technology

Colabs Exchange Program, Computer Science

Bachelor'S Degree, Information Technology

High School Degree, Science

Exchange Program, English Language And Literature, General