Joshua M Kellerman Email & Phone Number

Oakland, California, Us

Happy to work with the smart people in the Credit Karma Engineering team after a year of freelancing!

- Cloud services projects, including ML / NLP, SaaS, AWS / GCP, Containerization, Orchestration, Microservices and Monoliths, Cloud Applications, Security- RDBs, NoSql, Python, Scala, Java, CPP, ReactJs, AWS Lambda, Kafka, SQS, Redis, Php, NodeJs / Express- NY and CA, various

Youngstown, Ohio, Us

- Project lead for many of the Capture Team projects- Designing / implementing systems, applications, and databases - Microservices and Monoliths- Scala, Python, AWS Cloud Infra (DynamoDB, SQS, S3, Docker etc.), ReactJs

Laguna Beach , Ca

- Created several 20 minute found-footage films for therapeutic use in clinical mental health settings - Went through several revisions, from Storyboarding to draft, to final product.- Completed remotely during the COVID-19 pandemic and in Fall, 2022- Media Producer for Dolphin Adventure live Zoomcast - https://www.youtube.com/watch?v=vcVRY5q_QmQ

San Francisco, Ca, Us

- Worked primarily in Scala, Python, Java, and ReactJS- Senior engineer on both Core Engineering (1 year) and SRE (8 months)- Worked to Implement an instance of the Google Four Keys project for Health Org SRE team- Spearheaded, Designed, and Implemented an internal app for SRE / Devops, evaluating engineering efficiency across code reviews and deployments.- Worked on Report Flow Architecture Migration and new features in back and frond end Twitter apps- Spearheaded, Designed, and Implemented a Social Graph Edge TTL system in Kafka and Lambda- Technical Lead on Twitter's new Safety Mode- Entire team let go during Elon Musk takeover Bid in July, 2022 - Health & User Experience SRE Team

Santa Clara, California, Us

Website and Video Consultant

Santa Clara, California, Us

- Oversaw UX research for projects on desktop/mobile applications, packaging, and media- Oversaw UX research on 2018 yubico.com website rebuild, including user data analysis, user personas, and user journeys- Architecture and Engineering on Universal Windows Platform app + bleeding edge Companion Device Framework unlock / login for Windows 10. Worked directly with Microsoft team and Yubico CTO to create YubiKey for Windows Hello, precursor to FIDO2 collaboration between Windows and Yubico. Zero bugs or security flaws when first submitted to Microsoft and started the business relationship. App was used by tens of thousands of users.- Lead / expanded web team by hiring on and training additional team members- Helped make architectural decisions on front-end and back end of new website in React.js & Redux, Node.js, and Magento 2- Motivated, prototyped, wireframed, and consulted on remake of the OS Security Login Tool and Hardware Manager Tool through UX research- Designed a User-Flow common experience for all of U2F protocol, for internal / tech partners- Oversaw the Video Production team

Santa Clara, California, Us

- Engineer, develop, and produce full-stack functionality for Yubico's apps and public facing websites (MySQL, PHP, jQuery with AJAX, OAuth, Node.js, Javascript (ES6))- Design visual and UX components for Yubico's apps and public facing websites- One of two lead architects / engineers on the YubiKey for Windows Hello App - C# and XAML - downloaded more than 50,000 times to date. Precursor / proof of concept app for Microsoft / Yubico partnership on FIDO2- Created Yubico's customer journey applets (/start, /solutions) in Javascript, D3.js and JSON- Oversaw video creative during a weeklong sprint on Facebook integration- Created Yubico's web store and product pages- Oversaw the implementation of Yubico's newly redesigned customer-facing website

Palo Alto, Ca, Us

- Worked primarily in Scala, Python, and ReactJS- Rearchitected NLU engine and saw a substantial gain in quality of service (4000% overall throughput, stability increased to 100% up to 20 concurrent requests with > 50% reduction in latency)- Built out testing / debugging / logging framework for components in API and NLU engine. Identified bottlenecks. Increased server throughput, reliability, stability. Set up cloud-based common development back end for NLU Engine to ensure consistency among developers.- Designed, prepared data for, updated and trained ranking models, knowledge graph for Spotify data. 200% higher coverage and 2-3% higher accuracy.- Third party API business components, rate limiter.- Rebuilt the cache / Recommendations engine for tight deadline. Now fluidly serving hundreds of thousands of requests daily as end-users are using the product. About 400% faster. - Designed and helped implement blacklisting system for offensive content, keyed by country and language.- Lead Engineer for "text analysis" service for NLU engine where customers can buy micro services. Evaluated positively for end-users of a top-10 worldwide internet company.- Integrated Dockerized Python as microservice into the NLU Engine to host Tensorflow for CRF ML as well as Stanford NLTK- Oversaw / advised design of data structure and edges for Wikidata scraping for Personal Assistant SDK.- Used Python, Java, Scala, Typescript, JavaScript, Redis, MySql, C++, Bash, Ubuntu & Alpine Servers on AWS and GCP

- Taught K-12 English, with some supplemental mathematics as per request by the student. Students involved in this free program were almost always from very low-income families, requiring necessary help to catch up in class.- My students overall saw test scores in English improve by 30-40%, while meeting all of their goals. I taught both groups (up to 7 students) and individuals. The management were very supportive. Overall, one of the best operations I have worked with. I would highly recommend this experience to anybody looking to make a positive impact in their community.

Madison, Wi, Us

- An internship teaching position for UW-Extension Wisconsin Center for Academically Talented Youth's middle school-aged (STEP) program. Our class team name was "Mr. J's Radioactive Dragons"- My students progressed intensely. I learned to manage a group of very intelligent people, and help them to create a team, succeed in individual projects, and self-direct to make one final class project, a website made from scratch.- I demonstrated the ability to inform, inspire, and to succeed despite technical errors and inter-personal conflicts between students. All of my students were very proud of themselves and their work by the end of the program. I was asked to stay another year by a parent whose child was not in my class.A recommendation from my program director Ola is available.

- Self-employed English teacher and tutor who gave private lessons to French students looking to improve their English.- I worked with 10 different students with varying levels of knowledge and usage of the English language between September 2013 and June 2014.- I am happy to say that those who worked with me saw dramatic improvements in quality and quantity of vocabulary, grammar, usage, and conversation on their test scores on ESL exams.- I enjoyed making my livelihood with a service I offered to my clients, and to be completely accountable and responsible for my product. This was the only sure-fire way to ensure that my clients received a consistent and quality education at the rate they paid. I enjoy setting my bar very high and bringing the students through leaps and bounds, breaking barriers they never before thought possible.

Madison, Wi, Us

*This business was cut from the funding at UW-Madison and is now closed as of 2014*- Josh was a great mentor and a great boss.- Experience in video and audio editing on non-linear and linear editing systems, data encoding, computer programming, relational databases, media project consulting (story, design, workflow, execution), data transfer and analysis, clerical, and professional poster printing.

Master'S Degree, Cinematography And Film/Video Production

Bachelor Of Arts (B.A.), English And Computer Science

Non-Degree, Political Science And Government, Journalism

Film, Cinematography And Film/Video Production

Hs Diploma, Drama And Forensics

Other, Political Communication

Bachelor'S Degree, English, Computer Science, French