Journal of Applied Software Engineering Vol. 23, Iss. 6 — June 2026
Twenty Years of Iterative Systems Delivery: A Longitudinal Case Study in Full-Stack Engineering Practice
B. Dwyer1
1Independent Researcher, Portland, Oregon. Correspondence: dwyer.bill@gmail.com
Abstract
We present a 23-year longitudinal observation of a single full-stack software engineer (subject "B.D.") spanning six employers and one extended field expedition. Findings indicate consistent delivery of production systems across mobile, web, and server domains, with notable migration efficacy (Java/XML → Kotlin/Jetpack Compose, n=50+ screens) and an unusually rapid promotion event (Tech Lead, t=6 months). A significant non-software interval (n=20,000 miles, motorcycle, AZ→Argentina) is examined as a possible confound and found instead to be additive.
Keywords: full-stack engineering, Kotlin, React Native, Jetpack Compose, longitudinal study, motorcycle, philosophy degree

1. Introduction

Subject B.D. completed dual degrees (B.S. Computer Science, B.S. Philosophy) at Saint Norbert College (2000–2004), establishing a baseline of both technical competence and an unusual capacity for calm during high-severity incidents.

2. Methods

Data collected via direct observation across seven engagements. Subject was tracked across multiple technology stacks (.NET, Node.js, React Native, Kotlin) and one geographic excursion of significant magnitude.

2003–04White Clover Dairy CRM (.NET), Green Bay, WI
2007–10Univ. of Phoenix platform, 400,000 students
2010–11Field expedition (see §4)
2016–17DAT Solutions — Load Board (Android, Node.js)
2017–19Cvent — React Native pilot, Tech Lead
2019–24New Relic — Kotlin/Compose migration
2024–eBay — item discovery & offer mgmt

3. Results

The 2019–2024 migration interval (New Relic) showed the highest measured throughput: 50+ screens converted from Java/XML to Kotlin/Jetpack Compose, with a corresponding decrease in CI pipeline volatility (subjectively reported as "calmer").

Fig. 1. Relative engagement complexity over time, 2003–2026 (arbitrary units)

The promotion event at Cvent (2017–2019), wherein subject achieved Tech Lead status within six months, fell outside the 95% confidence interval for typical promotion timelines and warrants further study.

4. The Field Expedition (2010–2011)

Subject departed all known technology stacks for eight months, traveling 20,000 miles solo by motorcycle from Arizona to Argentina. Rather than representing a gap, this interval produced a published memoir, "Anxiety Across the Americas," and appears positively correlated with subsequent leadership outcomes.

5. Discussion

Current observation (2024–present, eBay) indicates the subject has begun integrating large language model tooling (GitHub Copilot, Cline, Claude Code) into daily workflow, an area recommended for future longitudinal study.

6. Conclusion

Subject B.D. demonstrates sustained, varied technical contribution across two decades, remains "actively shipping," and replies to recruiter correspondence within one hour — a finding the authors describe as "also unusual."

References