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John S.

San Francisco, CA

$85/hour

Data & Backend Engineer

200+ Hours
Background check passed as of 7/23/13
4.8 average from 66 ratings
Very knowledgable and kind.
— Neal, Oakland, CA on 5/14/17

$85/Hour


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Arizona State University
University of Southern California
Master's

Education

Arizona State University

University of Southern California (Master's)

About John

Hi. I can help you with your programming projects.

I'm a data engineer at a fintech company in SF. We program in Clojure, but I'm also well versed in python3 and javascript/node.js (server side). Expert in SQL (mainly MS SQL and postgres, but it's all very similar) and data modeling.

I started my career as a Certified Public Accountant (still have an active license), but quickly moved to the analytics/data side of things. Now I build databases and data pipelines. Data is fun, and let me show you why!

I live in Nob Hill in SF and work downtown. Hope to meet you in the neighborhood and look forward to connecting!
Hi. I can help you with your programming projects.

I'm a data engineer at a fintech company in SF. We program in Clojure, but I'm also well versed in python3 and javascript/node.js (server side). Expert in SQL (mainly MS SQL and postgres, but it's all very similar) and data modeling.

I started my career as a Certified
Read more

Policies
Cancellation
8 hours notice required
Travel Radius
Travels within 1 miles of San Francisco, CA 94104
Background Check: Passed

"Very knowledgable and kind."

- Neal, Oakland, CA on 5/14/17

"Great tutor! Answered all my questions"

- Jim, New York, NY on 4/6/17

"Good lesson"

- Tad, Mc Lean, VA on 4/3/17

"Tailored lesson to my needs"

- Steven, San Francisco, CA on 1/20/17

"Very knowledgeable tutor of Python concepts"

- Gary, Chicago, IL on 1/18/17

"Knowledgeable and patient"

- Angela, San Carlos, CA on 12/10/16

"Highly recommended Tutor"

- Laura, Alameda, CA on 10/5/16

"Flexible and approachable"

- Dan, San Francisco, CA on 8/18/16

"Very patient, super nice."

- Laura, San Francisco, CA on 11/10/13

"Great tutor!"

- Sophia, San Francisco, CA on 9/8/13

"Very helpful."

- Tod, Rohnert Park, CA on 1/30/13

"Very Helpful"

- Neal, San Ramon, CA on 5/19/12
Business:
Microsoft Excel

Approved subjects are in bold.

Approved subjects

In most cases, tutors gain approval in a subject by passing a proficiency exam. For some subject areas, like music and art, tutors submit written requests to demonstrate their proficiency to potential students. If a tutor is interested but not yet approved in a subject, the subject will appear in non-bold font. Tutors need to be approved in a subject prior to beginning lessons.

JavaScript

Javascript is the language of the web, as well as increasingly used for server-side (node.js) and databases (mongo). Javascript is language I'm most proficient in - however - has some significant differences from other high level languages. Because the Javascript runtime is single-threaded, you must use callbacks to succeed when building more complex programs. Javascript also allows you to program in a functional style - operating on data in an almost declarative way, and using functions to perform operations (such as the native array functions - map, reduce, filter, every, forEach, etc). I wrote a business intelligence tool that takes a parameterized SQL query and sends the results to an email distribution list. It can be automated using cron (linux scheduling utility).

Linux

I'm a linux command line master! I can do everything from the basic terminal commands, to the basic shell programs, redirecting input / output, creating bash scripts, and automating those bash scripts or jobs with cron! I've installed *many* linux operating systems on a lot of different processor architectures - my favorite is ArchLinux on an ARM processor. Not because it's easy, because it's fun!

Microsoft Excel

Lets talk if any of these sound like fun: Advanced Excel, All formulas, Pivot tables, PowerPivot (connecting your SQL database to Excel and being able to pivot that data), Formatting and documentation, Modelling, Dashboards, Macros, VBA, Python scripting within Excel. Your middle name is Excel.

Python

Well versed in the latest version of python, python3. Python is a high-level language that is interpreted into C. I am self taught with Python, but have already authored some data tools that create value: I authored an ETL (extract, transform, load) program in python3 that creates my company's data warehouse and makes it easy for all of us to get denormalized (read-optimized) data.

Arizona State University
University of Southern California
Master's

Education

Arizona State University

University of Southern California (Master's)

Very knowledgable and kind.

John was great, helping me with an analysis project. He is very experienced in Data Analysis and Data Engineering, has a calm and kind demeanor, and I recommend working with him at any time.

— Neal, Oakland, CA on 5/14/17

Hourly rate

Standard Hourly Rate: $85.00

Cancellation: 8 hours notice required

Travel policy

John will travel within 1 miles of San Francisco, CA 94104.