Leo Lapworth - Chief Technical Officer at KaarbonTech Asset Management

Leo Lapworth

Chief Technical Officer at KaarbonTech Asset Management

Bradford-on-Avon, England, United Kingdom

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Summary

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Senior

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Top School

Leo Lapworth is a pragmatic CTO and open source technologist with 16+ years of experience building and operating large-scale web and infrastructure systems, currently focused on serverless microservices on AWS using TypeScript/Node.js. He combines hands-on full‑stack development (Vue.js front-ends and occasional Perl) with deep ops expertise—having scaled MetaCPAN’s search platform to multi-datacentre Elasticsearch clusters with CDN caching and handled a trebling of traffic without incident. At KaarbonTech he led a move to cloud-first, ISO27001-aligned practices, introduced automation and CI, and architected serverless pipelines (Step Functions, Lambda, Athena) to deliver asset risk scoring and sensor ingestion. Known for finding the cleanest solution to complex problems, he also mentors teams through technology transitions, including a Perl-to-TypeScript monorepo migration. Based in Bradford-on-Avon, he pairs practical engineering with a taste for elegant, maintainable systems that delight end users.

16 years of coding experience

22 years of employment as a software developer

BSC, Psychology, BSC, Psychology at University of Essex

Stackoverflow

Stats

2,776reputation

539kreached

13answers

2questions

Github Skills (24)

caching10

javascript10

scripting10

amazon-elasticsearch10

css10

perl10

elasticsearchquery10

aws-elasticsearch10

html10

elasticsearch10

metacpan10

devops10

elasticsearch-api10

cpan9

lessc9

Programming languages (13)

JavaC++CSSJinjaVuePerlHTMLPerl 6

Github contributions (5)

metacpan/metacpan-api

Apr 2013 - Apr 2019

A free, open API for everything you want to know about CPAN

Role in this project:

Back-end & DevOps Engineer

Contributions:2 reviews, 170 commits, 88 PRs in 6 years 1 month

Contributions summary:Leo's contributions primarily focused on improving the performance and maintainability of the MetaCPAN API. They implemented scripts for mirroring CPAN for development, building test CPAN directories, and integrating Fastly CDN caching. The user also modified several controllers to add and adjust caching headers, and added scripts to monitor the minion queue. Further contributions included improving the indexing and purging of content during reindexing, and refining the author indexing process.

apieverythingpythonmetacpanperl

metacpan/metacpan-web

Jul 2011 - Apr 2019

Web interface for MetaCPAN

Role in this project:

Full-stack Developer

Contributions:4 reviews, 212 commits, 94 PRs in 7 years 10 months

Contributions summary:Leo primarily contributed to the web interface for MetaCPAN, making changes related to the user interface and layout. Their work included modifying HTML templates (e.g., account-bar.html, about.html, root/wrapper.html), adding links, and implementing improvements for SEO. They also worked on adding caching mechanisms and refining the site's styling with CSS, including the integration of server-side LESS processing and client-side Javascript. The user also contributed to improve the documentation of the site.

cpanmetacpanperlweb-interface

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