Hi, I'm Daniel!

Daniel Oxenhandler

Proven data engineer with two decades’ experience deploying and managing multi-platform environments at both start-up and Fortune 500 organizations.

• Boulder Creek, California
• LinkedIn Profile

Senior Data Analyst

2021 – 2023

Similarweb, Inc, San Francisco, CA

• Supported 24×7, cloud-based data collection and analysis platform at high growth, digital intelligence organization
• Managed all facets of proprietary datafeed solution, including writing SQL queries, develop and modify PHP scripts, monitoring and KPI's.
• Used AWS Cost Explorer to monitor cloud spend, and implemented lifecycle policies to reduce costs.
• Infrastructure Jack of All Trades during transitional phase of the business. Covered a range of different technologies due to rapidly changing organization.

Senior Data Engineer

2020 – 2021

Embee Mobile, San Francisco, CA

• Spearheaded migration of the former company's entire platform (big data, RDBMS, IoT, storage and supporting infrastructure) between clouds. This was achieved on schedule and with no downtime.
• Query data in Athena, Apache hive and RDBMS to provide customer insights and internal performance metrics.
• Manage partnership with key customer R&D team to foster collaborative relationship and evolve the data collection capabilities.
• Provided data analysis across the stack (device, network, server) to provide answers to complex customer questions about performance metrics.

Senior Devops Engineer

2015 – 2020

The Nielsen Company, San Francisco, CA

• Migrate analysis and reporting from Oracle RDMS to Apache Hive, while monitoring, tuning, and troubleshooting Cloudera and Hortonworks clusters.
• Reduce one day’s manual effort into one hour by automating provisioning script to move open-source geolocation database from on-premise data center to AWS Cloud.
• Slash trouble tickets 80%, promoting communication with end users to identify easy, internal fixes and providing best practice documentation. Improved related Hadoop cluster performance.
• Save organization dollars by galvanizing solution to provide consistent video-streaming performance nationwide, meeting goal of finding cost effective host for streaming video content. Used AWS Cloudfront, S3, and Route 53.

Senior Operations Engineer

2011 – 2015

Carrier IQ, Inc., Sunnyvale, CA

• Supported network infrastructure and application stack to continuously ingest metrics from millions of mobile devices.
• Deployed and managed data center infrastructure including F5 load balancers, firewalls, IPS, 802.1x authentication, and x509 certificate management.
• Spearheaded network implementation for migration of more than 200 servers to new data center. Created plans for every host, switch port, and subnet of 200+ physical servers, plus firewalls, load balancers, routers, and switches.
• Improved security and streamlined network administration by implementing TACACS+, a standard network authentication protocol across data center, headquarters, and remote office networks.

Senior Unix System Administrator

2009 – 2011

Nokia Research Center, Palo Alto, CA

• Designed, built, and supported global computing and web infrastructure of advanced research department.
• Deployed solutions on dedicated hardware on virtualization platforms including VMware, OpenVZ, Proxmox, and Xen.
• Managed 200TB storage deployment on commodity hardware with Open Solaris and HDS SAN. Supported 120-node, 500TB Linux compute cluster, providing internal and external data source analysis.
• Drove private cloud deployments in effort to provide self-service portal to researchers.