CPN CPE Software Engineering case studies
CPN CPE Software Engineering · Put your knowledge to work in context.
The CPN CPE Software Engineering credential is a professional certification aimed at engineers who build software for nanotechnology-enabled systems, instruments, and analysis pipelines. It suits practitioners who already write code but need to demonstrate that they can do so under the discipline expected in a regulated, safety- and measurement-sensitive domain: traceable requirements, defensible architecture, verification evidence, and controlled change. The CPN CPE Software Engineering case studies are 5 cases and about 4,240 words.
1The Claims Portal and the Word 'Real-Time'
Meridian Health's claims portal is entering acceptance testing. The requirements specification contains 214 numbered requirements; 37 describe performance, and 9 of those use the phrase 'real-time' or 'fast'.
883 words, about 4 min2Shared Schema, Three Teams, One Outage
A logistics platform is a single Java monolith with 6 modules and 140 database tables in one PostgreSQL schema, owned jointly by three teams. Deployments go through a weekly release train; teams block each other for an average of three days per release, and last month a destructive migration dropped a column while an older version of another team's code was still running, causing a four-hour outage.
865 words, about 4 min3Coverage Up, Escaped Defects Up
An e-commerce team runs 1,200 Selenium UI tests and 180 unit tests. Line coverage is 84% and the CI pipeline takes 55 minutes.
848 words, about 4 min4The Framework Upgrade with an EOL Clock
A policy administration system is a 240,000-line Java application on Spring Boot 2.3 and Java 11, with 1,700 automated tests. Spring Boot 2.3 is out of support, and a high-severity CVE has been reported in a transitive YAML-parsing dependency.
841 words, about 4 min5Sixteen Weeks, Eight Engineers, Four Contractors
A regulatory reporting system has a 22-week estimate from eight engineers (P50), with a P80 of 26 weeks. The sponsor has committed to a 16-week regulatory deadline and proposes adding four contractors from week 3 plus mandatory overtime at 50 hours per week.
803 words, about 4 min