Jan 2021 – Oct 2023 · 2 yrs 9 mos · San Francisco Bay Area

• Moonsense helps online businesses detect the most sophisticated fraud schemes. Unlike end-to-end fraud solutions with one size fits all risk scores, Moonsense provides flexible and immediate access to actionable signals and the underlying source data. With the ability to better customize rules and risk scoring, customers can more accurately detect fraudulent behavior without creating additional user friction.

Jun 2019 – Feb 2021 · 1 yr 8 mos · San Francisco Bay Area

• While at Sweat Equity Ventures, I had the unique opportunity to be the acting CTO for multiple early-stage companies (Bureau.id, Sardine.ai, Scribehow.com) and played a key role in the development of their initial products, helped execute the go-to-market strategy, and recruited the founding engineering teams. The story continues with Sweat Equity Ventures being now an investor in Moonsense.

Aug 2017 – Jun 2019 · 1 yr 10 mos · San Francisco Bay Area

• Co-designed and implemented a multi-petabyte interactive data analytics platform called MoPub Analytics used by multiple customers within MoPub and outside. This system is being used to answer 1000s of questions every day and is well-positioned to become the backbone for many other use cases. MoPub is one of the largest RTB exchanges in the world.
• Worked on modernizing the Twitter Ad Serving stack with a focus on migrating to a services-oriented architecture and state sharding (designed and prototyped a system similar to Google Slicer - see link). This is the business-critical system driving most of the Twitter revenue, a complex web of backend APIs, data stores, and data pipelines.

Oct 2013 – Aug 2017 · 3 yrs 10 mos · San Francisco Bay Area

• Cloudera acquired my start-up (Axemblr.com) and while being part of the organization, I've acted as a Tech Lead for multiple v1/greenfield product initiatives at the intersection of Hadoop and cloud infrastructure:
• 1. Developed the initial version of Cloudera Director (now called Cloudera Altus Director) from scratch and acted as the tech lead for a distributed team over multiple product releases. Director is used to deploy complex Hadoop & Spark clusters on all of the major cloud providers.
• 2. Designed and developed the infrastructure for usage metering to make it possible for Cloudera to charge based on utilization. This is a business critical system designed for high availability and data durability.
• 3. Developed multiple components for Cloudera Altus, a Platform-as-a-Service offering focused on data engineering. I contributed to the initial product vision and architecture, CI/CD pipeline, AWS cloud integration, job management, cluster bootstrap, TCO optimizations, customer onboarding flow etc.

May 2012 – Sep 2013 · 1 yr 4 mos · Bucharest, Romania

• A monthly meetup for passionate developers using either Java, Scala, Groovy, Clojure, JRuby or any other language based on the JVM (Java Virtual Machine). It was a great opportunity to meet a large number of developers.

Apr 2012 – Sep 2013 · 1 yr 5 mos · Bucharest, Romania

• Developed a SaaS product offering Hadoop-as-a-Service on top of Apache Whirr and Apache Provisionr. This technology was acquired by Cloudera early in 2013 to bootstrap the cloud engineering team.
• Collaborated with Epigrams on a data ingest and reporting pipeline that consumed logs from a real-time ad bidder. Developed a pipeline for ad re-targeting that used DynamoDB as the backend and ingested auction data from MoPub.
• Collaborated with Cloudsoft on the integration between Apache Whirr and Apache Brooklyn in the open-source under the ASF umbrella.
• Collaborated with UberVU (acquired by HootSuite) on deployment automation, build and test infrastructure improvements.

Jan 2012 – Jul 2012 · 6 mos

• jclouds is an open source library that helps you get started in the cloud and reuse your java and clojure development skills. Our api allows you freedom to use portable abstractions or cloud-specific features.

Oct 2011 – Apr 2012 · 6 mos

• Cloudsoft’s mission is to help enterprises apply the benefits of Cloud Computing to the large-scale, distributed, transactional systems that they use to run their business.

Jul 2011 – Sep 2011 · 2 mos · Mountain View, California

• I have been working on growth and data infrastructure (stream processing, scribe, hbase).

Mar 2011 – Jun 2011 · 3 mos · Bucharest, Romania

• I have joined the SaaS Infrastructure team as an intern to work on improving Apache Whirr to be used as a framework for deploying services to the cloud and at the same time I've done some research on fault injection testing for Apache ZooKeeper.

Dec 2010 – Jul 2012 · 1 yr 7 mos

• Apache Whirr is a set of libraries for running cloud services (e.g. Hadoop, HBase, elasticsearch etc.) It provides: a cloud-neutral way to run services, a common service API and smart defaults for services.

Aug 2010 – Feb 2011 · 6 mos

• Sunnytrail is a webapp that enables founders/CEOs of companies based on the subscription revenue model (such as SaaS) to track profitability metrics effortlessly (e.g: customer lifetime value, churn, etc).

May 2010 – Aug 2010 · 3 mos · Bucharest, Romania

• Indekspot offers you ready to use search index containers, based on the robust Apache Solr search server. Our job is to manage the infrastructure and provide optimized configurations for your web application. We provide means for lowering your cost by using services hosted in the cloud.

Apr 2010 – Aug 2010 · 4 mos

• Apache ZooKeeper Monitoring Tools and Web-based Administrative Interface http://bit.ly/bflbsw

Mar 2010 – Jun 2010 · 3 mos

• Graduate Diploma: Analysis and drill-down on EXIF metadata for photos stored on photoshop.com service ( CSI Team) Large scale data processing using the Hadoop / HBase stack.

Oct 2008 – Mar 2010 · 1 yr 5 mos

• Major improvements on youmago.ro -- architecture, deployment, testing.

May 2008 – Oct 2008 · 5 mos

• Software development and maintenance in Java and C/C++. I've also done a small project in Ruby on Rails. The main project I worked on involved data synchronization and I used Java and Oracle AQ.

Feb 2007 – Feb 2008 · 1 yr

• My main project was http://www.youmago.ro I have done web programming, linux system administration, software design and small scale project management