Alexander Mankuta

Ukraine

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Summary

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Rockstar

🎓

Top School

Alexander Mankuta is a seasoned Ruby and web applications engineer with 18 years of experience designing scalable APIs, workflows, and back-end systems for companies like Peanut and Scribd. He combines practical full-stack chops—Rails, JavaScript, HTML/CSS, Linux administration—with business analysis and architecture skills to replace legacy systems and optimize high‑performance services. An active open-source maintainer, he leads the PrawnPDF gem and contributed advanced features such as soft masking and gradients to that widely used Ruby PDF library. Alexander prefers focused, deliberate outreach (your message must include “lemon tree”) and enjoys building useful applications by applying familiar techniques in unconventional ways. Based in Ukraine, he brings a pragmatic mix of performance-minded engineering and long-term product stewardship.

18 years of coding experience

15 years of employment as a software developer

Igor Sikorsky Kyiv Polytechnic Institute

English, Russian, Ukrainian

Stackoverflow

Stats

540reputation

15kreached

11answers

2questions

Github Skills (20)

pdf10

formatter10

software-quality10

graphic10

ruby10

code-analysis10

formatters10

html10

pdf-generation10

linter10

testing9

static-analysis9

cli9

imagemagick6

sprockets6

Programming languages (19)

MDXC++CSSRustCScalaGoHTML

Github contributions (5)

prawnpdf/prawn

Sep 2012 - May 2021

Fast, Nimble PDF Writer for Ruby

Role in this project:

Back-end Developer

Contributions:2 releases, 63 reviews, 186 commits in 8 years 9 months

Contributions summary:Alexander implemented soft masking functionality, a feature for arbitrary transparency, in the Prawn PDF library. This involved writing code to create a new `SoftMask` module and integrating it into the core `Prawn::Document`. The user's commits also included writing specifications, creating graphics states, and refactoring the bounding box handling. The user further improved the library by implementing axial and radial gradients and improved the handling of stream compression.

pdf-generatorpdfnimblepdfkitprawn

qltysh/qlty

Jan 2017 - Jan 2018

Universal code quality CLI: Linting, formatting, security scanning, and metrics

Role in this project:

Full-stack Developer

Contributions:21 commits, 35 PRs, 42 pushes in 11 months

Contributions summary:Alexander primarily focused on enhancing the code quality CLI, `qlty`, by improving the HTML formatter. This included refactoring the HTML template for better structure, adding informational messages, and implementing filtering capabilities. The user also extended the help command for better usability and support. Moreover, the user implemented issue overrides, specifically related to severity, to provide enhanced output modification control.

climateclimate-clicodeclimatedockerstatic-code-analysis

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