- 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

Sr. Staff Software Engineer

- 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

Staff Software Engineer

- 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

Principal Software Engineer

- Technical Lead on a team of 11 engineers
- Trained developers on testing, refactoring, functional programming, and DDD
- Leveraged my own open source library to shorten DB access code by 50%
- Built tool to debug and test 20K lines of SQL ahead of a monstrous prod rollout
- Drove secure coding practices and oversaw remediation of security issues
- Doubled the release frequency of a huge legacy monolith

- Part of a small, high-performing modernization team
- Moved a system with 2.5 million lines of code to modern Java safely and quickly
- Built among the first unit tests in the core of the legacy system
- Built new software having high test coverage, high performance, and few defects
- Once rescued 2 weeks of an entire team's work from a tricky Git mistake

Senior Software Engineer

Almost 10 more years of experience writing software and leading software teams through construction of full-stack web applications in various domains including Healthcare, Insurance, Logistics, and eCommerce.

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.

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

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

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

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

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

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.

Clojure is hands-down my favorite language. I use it whenever I have an excuse! It's an extremely powerful tool.

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David S.

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