Mitchell Ohlman Email & Phone Number

Los Angeles, Ca, Us

Manager and tech lead for web platform devops team. - Effectively managed team for 4 years (in title for 1 year)- Scaled team from 1 to 4 engineers including senior, mid-level, and junior engineering roles- Participated in quarterly performance reviews with team resulting in measurable improvements in personal, team, and organizational value- Undertook regular reviews of uptime, performance, and time-to-recovery KPIs and subsequent process and architectural improvements… Show more Manager and tech lead for web platform devops team. - Effectively managed team for 4 years (in title for 1 year)- Scaled team from 1 to 4 engineers including senior, mid-level, and junior engineering roles- Participated in quarterly performance reviews with team resulting in measurable improvements in personal, team, and organizational value- Undertook regular reviews of uptime, performance, and time-to-recovery KPIs and subsequent process and architectural improvements resulting in improved reliability for customer web portals, apis, and dependent microservices- Successfully planned and executed migration of complex monolithic 3-tiered application and related services from on-prem datacenter to AWS cloud- Implemented automation covering all operational aspects of AWS cloud ecosystem including resource lifecycle management and infrastructure provisioning. - Infrastructure-as-code defined in Terraform and SaltStack, with orchestration via Jenkins- Built fully automated CI/CD pipelines for enterprise-level customer portals web application and a wide variety of micro-services and console applications- Built automation to provide on-demand dev environments deployed with latest or custom changes to allow for isolated testing of code changes within minutes- Cross Platform Software Engineering | responsible for the implementation and maintenance of a wide array of applications written in C#, ASP.NET, Python and GoLang, as well as substantive refactoring of customer facing web portals application to enable integration with AWS cloud servicesTechnologies:DevOps: AWS (Console, CLI, SDK), Jenkins (Pipeline and Freestyle), Docker, Git, SaltStack, Octopus Deploy, NuGet Server, FilebeatAWS: EC2 (ELB, ALB, NLB, Image Builder), VPC (gateways, subnets, route tables, NACLs, security groups), S3, KMS, ElastiCache, ACM, Storage Gateway, IAM, Secrets Manager, Route53, and othersLanguages: C#, Bash, Powershell, Python, GoLang, Jinja Show less

Playa Vista, Ca

- Technical lead for Devops team comprised of 4 software engineers- Designed and automated provisioning and operational workflows for multi-tier web platform application environment built upon a diverse range of AWS services including VPC, EC2, ElastiCache, S3, ACM, Secrets Manager, KMS, IAM, and many others- Troubleshoot complex network connectivity issues between cloud services and hosts in on-prem data center using tools such as telnet, traceroute, and tcptrace- Leverage… Show more - Technical lead for Devops team comprised of 4 software engineers- Designed and automated provisioning and operational workflows for multi-tier web platform application environment built upon a diverse range of AWS services including VPC, EC2, ElastiCache, S3, ACM, Secrets Manager, KMS, IAM, and many others- Troubleshoot complex network connectivity issues between cloud services and hosts in on-prem data center using tools such as telnet, traceroute, and tcptrace- Leverage observability tools (New Relic), network and application logs, and stack dumps to diagnose and fix complex application failures in production environment- Designed and implemented Jenkins pipelines to automate code deployment and regression testing for large enterprise-level web application, cache, and SQL database- Built and maintained full SaltStack master/minion implementation for server configuration management solution with upwards of 100 Windows Server and Ubuntu minions.- Designed and implemented full CI/CD pipeline for web platform server provisioning, configuration, and code deployment, utilizing Jenkins, Octopus Deploy, Git and AWS Cloud CLI and SDK- Designed and implemented cross-region caching solution comprised of containerized (Docker) Redis masters, replicas, and sentinels to enable unified cache during on-prem to cloud migration window- Defined and deployed AWS cloud infrastructure using Terraform- Implemented custom Terraform importer application in GoLang to allow for easy persistence of existing AWS resource configurations - Implemented node management service to manage AWS resource uptime which reduced monthly infrastructure costs by 80% Show less

- Technical lead, architect, and mentor for team of 7 software and test engineers- Independently designed and implemented enterprise level test automation framework in C# for entire web platform engineering organization comprised of over 30 engineers- Independently designed and developed custom API-driven test result aggregation application in C# / MVC / ASP.NET Core. Result visualization dashboard included per-test line item artifacts including video and point-of-failure screenshot… Show more - Technical lead, architect, and mentor for team of 7 software and test engineers- Independently designed and implemented enterprise level test automation framework in C# for entire web platform engineering organization comprised of over 30 engineers- Independently designed and developed custom API-driven test result aggregation application in C# / MVC / ASP.NET Core. Result visualization dashboard included per-test line item artifacts including video and point-of-failure screenshot (for web tests), trace logs, and error logs. Console integrated with Jenkins to allow for in-line test retry execution- Independently developed and deployed full video capabilities for capturing web test execution. The implementation was extremely efficient and cost tens of dollars per year. This measure saved the company $150,000 annually.- Implemented robust Jenkins pipelines to orchestrate test execution, reporting and infrastructure lifecycle automation- Test execution was fully parallelized with web test capabilities powered by Selenium Webdriver and API tests consisting of contract based API client with custom deep-object assertion layer- Built and managed fully automated, cloud based (AWS) infrastructure solution for test execution, orchestration, and reporting- Test code distributed and executed via CI/CD generated Nuget Packages deployed to farm of on-demand AWS EC2 test runner instances- Held weekly one-on-one meetings with senior and mid-level test engineers to provide detailed technical guidance for ongoing projects and general skill and career based mentorship Show less

- Solo test engineer for premier infrastructure core engineering team tasked with implementing industry leading scaling and performance solutions- Utilize C#/.NET to implement new test frameworks and test harnesses for key infrastructure middleware products dealing with distributed caching, data relay, and atomic transaction management - Implemented and automated execution of intensive functional, integration, performance, load, and regression testing in a distributed client/server… Show more - Solo test engineer for premier infrastructure core engineering team tasked with implementing industry leading scaling and performance solutions- Utilize C#/.NET to implement new test frameworks and test harnesses for key infrastructure middleware products dealing with distributed caching, data relay, and atomic transaction management - Implemented and automated execution of intensive functional, integration, performance, load, and regression testing in a distributed client/server Windows environment- Independently design and implement custom multi-threaded performance test tools utilizing WinForms and Windows console applications- Lead test engineer for “Project Gemini”, a joint effort between MySpace R&D and USC Viterbi School of Engineering. Gemini is an in-memory caching system based on BerkeleyDb designed to use heuristics to predict cache access patterns- Perform usability analysis on all infrastructure product API’s- Dramatically improved code quality and production bug occurrence rate across all infrastructuremiddleware and cache products through rigorous exploratory and automated testing- Show less

- Utilize C#/.NET to develop prototype web test framework around "WebAii Art Of Test". This implementation ended up being adopted by the entire engineering org as the de-facto test solution for web and api- Develop custom integration tests to facilitate testing of WCF web-services and UI workflows- Designed and implemented web test framework - Develop custom test beds and stand alone applications to ensure maximum user interface test coverage- Worked closely with application… Show more - Utilize C#/.NET to develop prototype web test framework around "WebAii Art Of Test". This implementation ended up being adopted by the entire engineering org as the de-facto test solution for web and api- Develop custom integration tests to facilitate testing of WCF web-services and UI workflows- Designed and implemented web test framework - Develop custom test beds and stand alone applications to ensure maximum user interface test coverage- Worked closely with application developers to implement robust unit, integration, and web test suites- Worked closely with Configuration Management team to ensure proper test deployment and execution as part of the build/deployment pipeline-0 Show less