David Schoutens

ABOUT ME

Software Development Skills and Career Mentor

Full-stack software craftsman and technical leader with over 15 years of experience. Equally adept at system design, programming, technical leadership, mentorship, and business collaboration. Have a wide breadth of technical experience, but specialize in backend API development, relational databases, and web applications. Passionate about simplicity and efficiency.

I have worked at over a dozen companies large and small, in a handful of different domains. Also participated in hundreds of interviews, about half-and-half as the interviewer and the interviewee. I have given dozens of talks and training sessions on a variety of topics, mostly focusing on distributed systems, caching, and testing.

My top skills are Java, SQL, testing, and refactoring.

I have experience with formal academic and professional mentorship, and would love to help you skill up, solve a problem, or just nerd out with you today!

()

Joined February 2017

EXPERTISE

Java

15 years experience | 18 endorsements

I have been hands-on with Java from version 1.5 up to Java 22. I can help you basics, advanced concurrency, and everything in between.

Spring Boot Spring webflux Reactive Programming JUnit Testing techniques Sonar Project lombok Domain-Driven Design Test driven development Code Refactoring

SQL

15 years experience

Most projects in my career have leveraged a relational SQL database. I have considerable expertise in SQL query performance optimization.

Database Tuning PostgreSQL Oracle SQL

Database Tuning PostgreSQL Oracle SQL Oracle PL/SQL Database Scaling

JavaScript

15 years experience | 2 endorsements

I have spent several focused years on JavaScript, Typescript, and web frameworks. I can help you navigate around the rough edges.

Node.js TypeScript Component

Node.js TypeScript Component Angular jQuery

Test driven development

15 years experience

I can help you get more value out of your test suite and avoid pitfalls that make tests annoying and expensive to maintain.

JUnit Unit Testing Integration Testing

JUnit Unit Testing Integration Testing Functional Testing Mocking Mockito Testing Test Automation Testing techniques

Code Refactoring

10 years experience

After focused training on refactoring, my approach to programming transformed. I can teach you this superpower (or fix your legacy codeba...

After focused training on refactoring, my approach to programming transformed. I can teach you this superpower (or fix your legacy codebase).

Vim VS Code Refactor

Vim VS Code Refactor Eclipse Intellij

Object-Oriented Programming

15 years experience

I can advise you on when to use a Factory, Builder, Proxy, Visitor, Strategy, etc (and how to avoid going overboard on patterns!).

Design Architecture Java JavaScript

Design Architecture Java JavaScript .NET Domain-Driven Design

Git

8 years experience | 1 endorsement

Git is ubiquitous, but most people only know the basics. I can help you go deep, or get you out of trouble if you fear you've made a mist...

Git is ubiquitous, but most people only know the basics. I can help you go deep, or get you out of trouble if you fear you've made a mistake.

Git flow Version control Git

Git flow Version control Git GitHub Team collaboration

SOCIAL PRESENCE

GitHub

devbox

Shell

simple-jdbc

Java

EMPLOYMENTS

Sr. Staff Software Engineer

Fanatics Betting & Gaming

2023-05-01-Present

- Designed new mission-critical system serving majority of application traffic - This system has one of the lowest incident rates of any ...

- Designed new mission-critical system serving majority of application traffic - This system has one of the lowest incident rates of any system at FBG - Saved at least 5 person-years of development time by simplifying architecture - Built a custom caching solution which hugely improved network efficiency - Optimized a few key database tables, transforming them from pain to asset

Java

MongoDB

Spring

Java

MongoDB

Spring

PostgreSQL

WebSocket

React

Apache Kafka

AWS

Staff Software Engineer

Crossbeam

2022-04-01-2023-03-01

- Achieved 100x optimization in PostgreSQL, avoiding a costly re-platforming effort - Re-developed reporting system which drastically red...

- Achieved 100x optimization in PostgreSQL, avoiding a costly re-platforming effort - Re-developed reporting system which drastically reduced overall system load - Developed a technique to cut team's production debugging time in half - Simplified testing framework to make testing complex scenarios easy - Improved team velocity through mob programming and pair programming

PostgreSQL

Elasticsearch

GitLab

PostgreSQL

Elasticsearch

GitLab

Clojure

Apache Kafka

Vue.js

AWS

Principal Software Engineer

ZoomInfo

2020-11-01-2022-03-01

- Hands-on technical lead & architect of new product from inception to launch - Got project actually moving through clear communication (...

- Hands-on technical lead & architect of new product from inception to launch - Got project actually moving through clear communication (diagrams are great!) - Established org-wide standards for Java, tests, build tooling, and static analysis - Leveraged gRPC (Protobuf) and bytestreams to speed up key services - Thrived in an environment using a dizzying array of different technologies

Java

Node.js

MongoDB

Java

Node.js

MongoDB

Angular

PostgreSQL

Grails

Google BigQuery

Big Data

Google Cloud Platform

Spring Boot

DynamoDB

Apache Kafka

Apache Solr

AWS