Slava Markeyev Email & Phone Number

San Francisco, California, Us

My work involves everything from debugging low-level performance issues to architecting and building services. Distributed systems are my jam. I'm currently leading a project to migrate Nextdoor from monolithic relational databases and access patterns to a scalable graph-like data model which heavily leverages caches.Just a few thing's I've worked on or built from the ground up:- Redis connection pooling service with built in caching- Network tap to decode Redis requests live to see query stats- PostgreSQL Logical Replication tool https://github.com/nextdoor/pg-bifrost- SSH Certificate Authority Service + tooling for developers and systems to request certs- DB LoadBalancer as a service (pgbouncer + haproxy)- AWS Lambda based ETL framework https://github.com/Nextdoor/bender- Various iterations of the event tracking and logging infrastructure- Security tool for developers to SSH to containers in AWS ECSOperational Experience:- Bringing services from problem statement to code to production- Debugging everything from TCP to Java performance issues- Ability to RTFM or read-the-code- Using Infrastructure-as-code tools like CloudFormation, Puppet, and most recently Helm- Architecting cloud infrastructure in AWSLast updated: 2024-03-23 10:44:45

San Francisco, California, Us

ETL Projects• Created Hive UDFs and SerDes to validate and load unsanitized data• Modified Hive to make ETL process more scalable• Led adoption of Oozie workflow management for ETL processes• Wrote monitoring and alerting for Oozie ETL workflows as well as service health checks for Hive services (hiverserver2, metastore)• Wrote CSV validation MR job and associated api for submitting and validating uploaded csv dataColumnar Migration• Led company adoption of columnar storage format which ultimately improved performance by 300% and significantly COGS reduction• Created processing scripts to convert historic row based data to columnar formatHadoop Infrastructure Management• Planned consolidation of two clusters in order to reduce costs and maintenance overhead• Managed infrastructure migration from MR1 to YARN• Led the use and development of internal Hive fork• Updated Salt deploy process to facilitate quicker and easier releases of Hadoop components• Tested and oversaw upgrades of production system through several Hadoop versions• Was the primary on-call developer for production Hadoop infrastructure system• Optimized cluster scheduling and resources• HBase JVM GC tuningSecurity• Planned and oversaw the implementation of Apache Sentry authentication/authorization for internal Hive infrastructure• Advocated for stronger security practices in new query rest api• Implemented data encryption service for sensitive dataREST API• Continued development on legacy api that was used to asynchronously submit queries to Hive• Was primary developer who oversaw contract work to replace the legacy query rest api with a flexible and query engine agnostic apiMiscellaneous• Added Impala query engine support for internal OLAP cube engine• Salt based deployment for all projects• Transitioned team to use Vagrant based dev environment• Hive Metastore performance and scalability tuning• Participated in business model planning

San Francisco, California, Us

• Developed and maintained an entire back-end live video stream managementarchitecture which was responsible for distributing hundreds of concurrent live streams thatwere watched by one-hundred thousand concurrent viewers at any given time• Created an intelligent load balanced solution for live video encoding on EC2• Coordinated and collaborated with major distribution networks such as Akamai,EdgeCast, HighWinds, Level3, and LLNW to facilitate live video stream distribution• Created technologies and procedures which facilitate cloud based operation of companyservices on the Amazon EC2• Planned and implemented intracompany services and infrastructure (project management, version control, VPN, etc)

Us

• Oversaw and managed all technical aspects of a live video production duringid Software’s QuakeCon trade show for the years of 2008 through 2012• Coordinated production with id Software, Alford Media, and QuakeCon volunteer staff

Carlsbad, Ca, Us

-Earned Most Valuable Employee Award-Voted as most dedicated employee by peers