Resume for Mark Wotton

Skills

primarily Haskell and PostgreSQL
have also worked professionally in Python, Ruby, C, shell, perl (both standalone and PL/pgSQL)
distributed systems design and implementation
backend web development
some embedded systems work

authored a resource management web app for deciding when a given network could be built, given the resources available. Squeal/Servant
authored a query language & compiler for content search.
wrote squealgen in order to automatically generate haskell-level types from a given database and integrated it into the SimSpace build process.
extensive database query profiling and optimisation.
added infrastructure for database-level testing with automatic migration.

initiated a Haskell web app for betterteam.com, including email processing, analytics integration with segment/intercom, and extensive healthchecks & monitoring. yesod/postgresql/ghcjs.

wrote a crawler that collected the front page from 160 million domains daily, engineered a system to avoid crushing the domain servers involved.
Haskell stack C zeromq agent to distribute domains for fetching. Sqlite backend for temporary storage elasticsearch for search.
under the leadstage brand, took meanpath crawl results and enriched them with social media info, lead scoring, Alexa rank, IP sharing information etc.

The Haxl framework enabled runtime selection of source information and clear & efficient compound queries.
Other meanpath/leadstage projects
- domain extractor (very fast stream filter for finding domain names in data)
- arin crawler
- fault-tolerant elasticsearch ingester
- parallelised SMTP query engine
- elasticsearch alternative (directly querying sqlite database in parallel)

Implemented a simple operating system for the PIC chip on a custom board, allowing it to be programmed from a handheld device for complex lighting tasks.

Bigcommerce (2013), Upguard (2012-2013), Key Options (2010-2012), Westfield (2009-2010), Optus

BSc (Hons) University of Sydney