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John Crown is listed as Sofware Developer at Self-employed, based in Sherwood, Oregon, United States. AeroLeads shows a matched LinkedIn profile for John Crown.
John Crown previously worked as Senior Software Developer at Self-Employed and Software Developer at Jotto.Etaoins.Net. John Crown holds Master Of Science, Computer Science And Engineering from Oregon Graduate Institute Of Science And Technology.
Specialties: Software Development, Software Test Automation, Software QA, SDETC/C++, Python, Perl, Javascript, Unix, HTML, CSS, SQL, distributed computing (SGE grid), C#, excellent writing and communication skills, English
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Developed web-based version of an old word-guessing game (Jotto) from scratch based on Ubuntu Linux, Catalyst Web Framework, Perl, SQL (sqlite3), Javascript, Template Toolkit, Nginx, HTML and CSS. Cloud-hosted on Linode. Developed automated tests in Python / Selenium.
Oregon, United States
Prepared test plans and executed manual tests of all new stories against Web-based applications developed in C#/.NET in Microsoft Windows environment. Created SQL queries, using Microsoft SQL Server Management Studio to identify suitable test data, set up test scenarios, and verify expected test-case results on back end. Wrote and deployed SQL queries as infrastructure code to monitor production data to forestall testing problems. Offered periodic demonstration presentations to business owner for each sprint and major release, per Agile development methodology. Administered local QA Websites, using Microsoft Internet Information Server. Developed unit tests in C#. Provided code review for items developed in C#, HTML, CSS, JavaScript, SQL, and regular expressions. Executed regression tests. Ensured all schema, data, and code changes advanced through necessary environments for all deployments and led retesting at each such step.
Designed software in Perl to collect run-time and memory size statistics from each test-case run and used data to optimize future scheduling and automate test cases against batch-mode EDA design-for-test tools. Developed test-case automation software to distribute work to 200 UNIX workstation hosts via Sun Grid Engine to run 100,000 test cases nightly for eight applications built on eight platforms. Brainstormed and implemented strategies to reuse existing test cases by rerunning tests in new configurations. Oversaw performance testing and monitoring. Ran weekly suite of performance tests on ten isolated hosts to track fluctuations in memory usage and run times. Developed Web-based data presentation in HTML. Developed auto-verify feature in Perl to reduce developer time spent reviewing failed test-cases. Addressed “oracle problem" by designing program to consume outputs from application under test and confirm or deny correctness in case of mismatch against reference results. Collaborated regularly with developers to devise automated scenarios to reuse software test cases in alternate configurations to meet various test objectives.
Diagnosed and fixed real-time keyboard device-driver bug, safely serializing certain key press and release sequences that could otherwise crash the device. Implemented OS and kernel-level debug aids and developed concurrent real-time memory de-fragmentation background task. Wrote graphics-rendering firmware for low-cost UTek display. Developed UNIX device driver code to provide debug channel between UTek workstation and native CPU display system. Worked with hardware designers to negotiate hardware and software trade-offs, as well as to measure and optimize per-pixel rendering time. Collaborated with electrical engineers to make hardware and software trade-off decisions influencing design of computer hardware.
Assembly Language programming, Nova Eclipse, LINC II (Spear)Designed software in Assembly Language on 16-bit minicomputers for two different applications used in medical settings. Developed life-critical software to monitor heart waveforms and sound alarms during events of patient distress, delivering 16-channel EKG heart-monitoring system used as nurses' station for patients in hospital coronary care units. Created application software and OS support for turnkey patient chart-keeping and record system used in medical laboratories.
Academic Minor in Linguistics Concert Band, Tuba Brass Choir, Tuba Fighting Ducks Marching Band, Sousaphone
Quick answers generated from the profile data available on this page.
John Crown works for Self-employed.
John Crown is listed as Sofware Developer at Self-employed.
John Crown is based in Sherwood, Oregon, United States while working with Self-employed.
John Crown has worked for Self-Employed, Jotto.Etaoins.Net, Webmd, Mentor Graphics, and Tektronix.
You can use AeroLeads to view verified contact signals for John Crown at Self-employed, including work email, phone, and LinkedIn data when available.
John Crown holds Master Of Science, Computer Science And Engineering from Oregon Graduate Institute Of Science And Technology.
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