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<!DOCTYPE html>
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<title>A14M</title>
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<meta name="author" content="Ahmed AbdelHalim" />
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<meta name="keywords" content="DevOps, Rust, Ruby, Ansible, Python, CI, CD, TDD, BDD, AWS, RESTful, API" />
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<header>
<h1>Ahmed AbdelHalim</h1>
<em>Senior Software Developer · DevOps</em>
<address>
Berlin, Germany<br />
<a href="tel:+491770126386">+49 (0)177 912 6386</a>
<a href="mailto:[email protected]">[email protected]</a>
<a href="http://a14m.me"><abbr>A14M</abbr></a>
<a href="https://sr.ht/~a14m"><abbr>A14M</abbr></a>
<a href="https://github.com/a14m"><abbr>A14M</abbr></a>
<a href="https://stackoverflow.com/users/1769515/a14m"><abbr>A14M</abbr></a>
<a href="https://www.linkedin.com/in/a14m"><abbr>A14M</abbr></a>
</address>
</header>
<article>
<h1>Summary</h1>
<p>
Current senior backend and infrastructure developer at <a href="https://sapera.com">Sapera GmbH</a>, with 7+
years experience in development (backend/API focused), 3+ years in infrastructure automation and DevOps. An
avid fan of automation, sustainability, design patterns, and clean code. Always interested in deriving a
better problem-solving method for challenging tasks, and learning sensible new technologies and tools (if the
need arises).
</p>
</article>
<article>
<h1>Skills</h1>
<dl>
<dt>DevOps</dt>
<dd>Ansible, Terraform, Docker, Vagrant, Makefile, certbot.</dd>
<dt>Back-end</dt>
<dd>Ruby on Rails, PostgreSQL, Redis, MongoDB, MySQL, Django.</dd>
<dt>Front-end</dt>
<dd>ReactJS, HTML5, Next.js, StimulusJS, TypeScript.</dd>
<dt>Programming</dt>
<dd>Ruby, Python, Bash, TypeScript, Rust.</dd>
<dt>Paradigms</dt>
<dd>
Design Patterns, Test Driven Development (<abbr>TDD</abbr>), Behavior Driven Development (<abbr>BDD</abbr>),
Continuous Integration and Delivery (<abbr>CI/CD</abbr>), RESTful APIs.
</dd>
<dt>Tools</dt>
<dd>
Vim, Git, Asana, Atlassian, CircleCI, TravisCI, Terminal, bash, Notion, Sidekiq, ...
</dd>
<dt>Platforms</dt>
<dd>
Amazon Web Services (<abbr>AWS</abbr>), DigitalOcean, Heroku, Google Cloud Platform (<abbr>GCP</abbr>),
*nix.
</dd>
<dt>Languages</dt>
<dd>English (Professional), German (Basic), Arabic (Native).</dd>
</dl>
</article>
<article>
<h1>Work Experience</h1>
<article>
<h2><a href="https://sapera.com/">Sapera GmbH.</a></h2>
<em>Senior Developer/DevOps</em>
<em>Berlin, Germany</em>
<em>Apr. 2018 - Present</em>
<ul>
<li>
Led the front-end team working on developing and shipping our (localized) company's website.
</li>
<li>
Implemented different project's infrastructure as code (<abbr>IaC</abbr>) using Terraform and Ansible.
</li>
<li>Standardized the deployment and infrastructure processes (and maintain the process documentation).</li>
<li>Built templates to provision infrastructure on different cloud providers.</li>
<li>Built templates to provision infrastructure for different development stages.</li>
<li>
Built standardized workflows using CircleCI to automate deployments (for internal and external projects).
</li>
<li>
Implemented and maintained the (Rails 5) JSON API serving our
<a href="https://app.visualpedia.igg.cloud"> infographics portal</a>.
</li>
<li>Maintained 99+\% documentation coverage of the Infographics API and 90+\% test coverage.</li>
<li>Worked with Docker to provide deliverables for some of our external projects.</li>
<li>Provided support and tutoring to work with our standard deployment workflows.</li>
<li>Worked closely with our Systems Engineer to support with various DevOps tasks.</li>
</ul>
</article>
<article>
<h2><a href="https://liqid.de/">LIQID GmbH.</a></h2>
<em>Senior Backend Developer</em>
<em>Berlin, Germany</em>
<em>Mar. 2016 - Dec. 2017</em>
<ul>
<li>Maintained the RESTful API (used by admins and front-end).</li>
<li>Implemented and maintained the integration with Deutsche Bank.</li>
<li>
Implemented and maintained the integration with Intercom
<abbr title="Customer Relationship Management">CRM.</abbr>
</li>
<li>Implemented and maintained the Invoicing system.</li>
<li>
Implemented the new authentication layer using
<a href="https://tools.ietf.org/html/rfc7519">(RFC7519: JWT)</a>.
</li>
<li>Implemented the <abbr title="Two-Factor Authentication">2FA</abbr> for user/client login.</li>
<li>Integrated other services like DocuSign, PostIdent,...</li>
<li>Implemented day to day business/marketing/technical requirements.</li>
</ul>
</article>
<article>
<h2>PrioriData GmbH.</h2>
<em>Full Stack Developer</em>
<em>Berlin, Germany</em>
<em>Jul. 2015 - Mar. 2016</em>
<p>Was acquired by <a href="https://airnow.com/">Airnow Data Ltd.</a></p>
<ul>
<li>Maintained the Rails web (dashboard) app.</li>
<li>Optimized the scraping process of getting the data from Apple and GooglePlay stores.</li>
<li>Reimplemented the queueing and monitoring around the scrapers.</li>
<li>Migrated acquired data from different resources to Google BigQuery.</li>
<li>
Maintained and provisioned different purpose <abbr title="Virtual Machines">VM</abbr> instances on Google
Cloud Platform (using chef).
</li>
<li>
Reimplemented the “Extract” step in the
<abbr title="Extract, Transform, Load">ETL</abbr> process (using an API based crawler approach instead of
phantom browser).
</li>
</ul>
</article>
<article>
<h2>AskNative</h2>
<em>Backend Developer/DevOps</em>
<em>Remote, Egypt</em>
<em>May. 2013 - Jul. 2015</em>
<ul>
<li>
Reimplemented large portions of the API to follow better design patterns (Hexagonal Architecture, and
<abbr title="Publish-Subscribe">Pub/Sub</abbr> pattern).
</li>
<li>Implemented the test suite for the API.</li>
<li>Implemented events booking feature via Stripe.</li>
<li>Reimplemented caching for better response times.</li>
<li>Maintained the Heroku stacks for staging/production.</li>
</ul>
</article>
</article>
<article>
<h1>Writing</h1>
<ul>
<li>
<h2>
<a href="https://www.toptal.com/ruby-on-rails/the-publish-subscribe-pattern-on-rails">
The Publish/Subscribe Pattern on Rails
</a>
</h2>
<p>
A published
<a href="https://www.toptal.com/ruby-on-rails/the-publish-subscribe-pattern-on-rails">blog post</a>
about implementing the Pub/Sub pattern in practice in Rails apps.
</p>
</li>
<li>
<h2>
<a href="https://www.toptal.com/abap/clean-code-and-the-art-of-exception-handling">
Clean Code and the Art of Exception Handling
</a>
</h2>
<p>
A published
<a href="https://www.toptal.com/abap/clean-code-and-the-art-of-exception-handling">blog post</a>
about different tactics and strategies for exception handling and how to use them to write cleaner code.
</p>
</li>
</ul>
</article>
<article>
<h1>Projects</h1>
<ul>
<li>
<h2>
<a href="https://sr.ht/~a14m/game-of-life/">
Conway's Game of Life
</a>
</h2>
<p>
A mono repo implementing different command line interfaces (<abbr>CLI</abbr>) for
<a href="https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life">Game of Life</a> in multiple languages
(currently Ruby/Rust), and the automation for publishing updates to different package managers using a
git-ish workflow.
</p>
</li>
<li>
<h2>
<a href="http://a14m.me">
a14m.me
</a>
</h2>
<p>
This website/CV.
</p>
</li>
<li>
<h2>
<a href="https://info.graphics">
Info.graphics
</a>
</h2>
<p>
As part of working at <a href="https://sapera.com">Sapera</a>, I was part of the team that drafted and
built this interactive story telling platform for creators/designers, to create and publish interactive
stories/infographics on the web.
</p>
</li>
</ul>
</article>
<article>
<h1>Education</h1>
<strong>B.E. in Computer Science and Engineering</strong>
<strong>GPA 3.1/4.0 (B - Very Good)</strong>
<a href="https://aast.edu">
Arab Academy for Science and Technology (<abbr>AASTMT</abbr>)
</a>
</article>
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