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resume-en.html
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<!DOCTYPE html>
<html lang="en">
<head>
<style>
body {
max-width: 38em;
margin: auto;
padding: 2em 2em 20em;
}
.compact ul {
list-style: none;
padding: 0;
}
.compact li {
padding: 0;
}
li {
padding: 1em;
}
h2 {
font-size: 1.2em;
}
</style>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<title>Resume - souenzzo</title>
<link rel="icon"
href="/me70.png"/>
</head>
<body>
<header>
<h1>Enzzo Pessanha Cavallo</h1>
<p>
I'm a developer with experience in security and networks.
Looking for hard problems involving many knowledge areas to solve.
</p>
Contacts:
<ul>
<li><a href="mailto:souenzzo@gmail.com">souenzzo@gmail.com</a></li>
<li><a href="https://souenzzo.com.br">souenzzo.com.br</a></li>
<li><a href="https://github.com/souenzzo">github</a></li>
</ul>
</header>
<main>
<section>
<header>
<h1>Highlights</h1>
<ul>
<li>6 years of experience in clojure</li>
<li>6 years of experience in datomic</li>
<li>8 years of experience in Linux/Cloud/Network</li>
<li>Open Source user and contributor</li>
<li>Active member in many online communities</li>
</ul>
</header>
</section>
<section>
<header>
<h1>Professional Experience</h1>
</header>
<section>
<h2>Developer at Compute Software Inc</h2>
<code>2021 - 2022</code>
<p>
Development and maintenance of a fullstack service that aggregate instance of services from AWS, GCP and
Azure, collecting every metric and recommending optimizations for both performance and cost.
The instances and recommendations are stored at a Datomic Cloud, metrics in InfluxDB. The
recommendations are generated periodically using CloudWatch timers and SQS.
The client was developed as a webapp, using React, SCSS, and Highcharts.
</p>
</section>
<section>
<h2>Developer at Buzzlabs</h2>
<code>2021 - 2021</code>
<p>
Research and development of a web scrapper and exposing the data via gRPC API.
</p>
</section>
<section>
<h2>Developer at Moleque de Ideias</h2>
<code>2016 - 2021</code>
<p>
Development of a software that aggregates and coordinates many services from the main players of
Brazilian e-Commerce.
</p>
<p>
Build up from scratch an interactive e-Commerce App using AWS, Datomic Cloud, Pathom, and
Fulcro, sharing code between Server, Web and Native targets.
</p>
<p>
Elaboration of a web dashboard for a long-running product, using Pathom, Fulcro, and Material UI.
</p>
<p>
Development of an innovative e-Commerce service, with a non-trivial distributed delivery system.
The backend service uses Pedestal and Datomic. Despite working in the backend, I have introduced
a simple web UI to help in debugging, administrative tasks, and analytics, using re-frame and
Material UI. I also brought the use of AWS Services like Load Balancers and CloudFront, reducing
the complexity of our architecture.
</p>
</section>
<section>
<h2>Intern at the IT department of Physics Institute (Universidade Federal Fluminense)</h2>
<code>2014 - 2016</code>
<p>
Support for students to run their software on clusters (MPI, CUDA, fortran, python)
</p>
<p>
Cluster setup: availability of scientific software, credentials, files access
</p>
<p>
Network services maintenance: NIS, DNS, firewall, SSH, FreeIPA, FreeNAS
</p>
<p>
Physical machines/networks: Cables, Switches, Routers, Fiber, NoBreaks, Servers
</p>
<p>
Participation on the of service migrations from physical servers to virtual servers
</p>
<p>
Migration/modernization of services (NIS to FreeIPA, "iptables firewall" to pfSense)
</p>
<p>
Use of techs like Docker, Ansible, Bash and Python, doing "Infrastructure as Code" since 2014.
</p>
<p>
Manage an heterogeneous SO network with many OS's, like CentOS, Debian, Ubuntu, Arch, BSD's and
others.
</p>
</section>
<section>
<h2>Scientific project</h2>
<code>2013 - 2013</code>
<p>
Research on stochastic systems - including capturing and analyzing data - and related
technologies, as computational randomness and distributed computing.
</p>
</section>
</section>
<section>
<header>
<h1>Interests</h1>
</header>
<section>
<h2>Software Community</h2>
<code>2016 - current</code>
<p>
Active engagement and recognition in many online communities learning, helping, and exchanging
experiences with many other people around the world.
</p>
<!-- completar -->
</section>
<section>
<h2>Open Source</h2>
<code>2014 - current</code>
<p>
Development and publication of small libs, mostly in <a href="https://github.com.br/souenzzo">GitHub</a>.
Contributions to software and libraries used in the projects that I work on, not only with code but
with issues, discussions, and feedbacks.
</p>
<p>
Highlights:
<a href="https://github.com/pedestal/pedestal/commits?author=souenzzo">pedestal</a>,
<a href="https://github.com/clojure/clojurescript/commits?author=souenzzo">clojurescript</a>,
<a href="https://github.com/fulcrologic/fulcro/commits?author=souenzzo">fulcro</a>,
<a href="https://github.com/wilkerlucio/pathom3/commits?author=souenzzo">pathom3</a>,
<a href="https://github.com/babashka/babashka/blob/v0.8.156/examples/README.md#tiny-http-server">
babashka(docs, examples)
</a>,
<a href="https://github.com/lilactown/pyramid/blob/3.2.0/README.md#prior-art">
lilactown/pyramid (inspiration, code)
</a>
<a href="https://github.com/cognitect-labs/aws-api/issues/203">
cognitect-labs/aws-api (security issue)
</a>
<p>
</section>
<!-- section>
<h2>House services</h2>
<code>since I was ~13yo</code>
<p>I ran services like remote login, file sharing, and automatic backups in my family house :)</p>
</section -->
</section>
<!-- section>
<header>
<h1>Formal education</h1>
</header>
<section>
<h1>Physics degree</h1>
<code>2012 - 2016</code>
<p>incomplete</p>
</section>
</section -->
<section class="compact">
<header>
<h1>Skills</h1>
</header>
<p>Extensive and exhaustive skill list. Use CTRL+F</p>
<p>Legend</p>
<ul>
<li><code>★★★</code> Know, understand, and has experience. Have opinions on it.</li>
<li><code>★★☆</code> Know, understand, but a few/no experiencie on it.</li>
<li><code>★☆☆</code> Used a few times.</li>
</ul>
<section>
<p>Languages</p>
<ul>
<li><code>★★★</code> Clojure</li>
<li><code>★★★</code> Clojurescript</li>
<li><code>★★★</code> Javascript</li>
<li><code>★★★</code> Shell(bash)</li>
<li><code>★★☆</code> Java</li>
<li><code>★★☆</code> C</li>
<li><code>★★☆</code> Go</li>
<li><code>★★☆</code> Rust</li>
<li><code>★★☆</code> Python</li>
<li><code>★☆☆</code> Elixir</li>
<li><code>★☆☆</code> Haskell</li>
</ul>
</section>
<section>
<p>Backend</p>
<ul>
<li><code>★★★</code> JVM</li>
<li><code>★★★</code> Logging (logback, slf4j)</li>
<li><code>★★★</code> Rest API's (OpenAPI, Swagger)</li>
<li><code>★★★</code> Graph API's (GraphQL, EQL)</li>
<li><code>★★★</code> Graph databases (datomic, xtdb)</li>
<li><code>★★☆</code> nodejs</li>
<li><code>★★☆</code> kafka</li>
<li><code>★★☆</code> SQS</li>
<li><code>★★☆</code> Zookeeper</li>
<li><code>★★☆</code> Redis</li>
<li><code>★★☆</code> Relational databases</li>
<li><code>★☆☆</code> RPC API's (gRPC)</li>
</ul>
</section>
<section>
<p>Frontend</p>
<ul>
<li><code>★★★</code> HTML</li>
<li><code>★★★</code> Web(browsers API's, protocols)</li>
<li><code>★★★</code> React</li>
<li><code>★★☆</code> ReactNative (android only)</li>
<li><code>★★☆</code> CSS</li>
<li><code>★☆☆</code> Android</li>
</ul>
</section>
<section>
<p>Cloud</p>
<ul>
<li><code>★★★</code> AWS(EC2, ECS, ALB, NLB, CloudFront, APIG, lambda...)</li>
<li><code>★★★</code> Linux</li>
<li><code>★★★</code> Continuous Integration/Delivery (Jenkins, CircleCI, Github Actions)</li>
<li><code>★★☆</code> Docker</li>
<li><code>★★☆</code> GCP</li>
<li><code>★☆☆</code> Infrastructure as code (pulumi)</li>
</ul>
</section>
<section>
<p>Misc</p>
<ul>
<li><code>★★★</code> git</li>
<li><code>★★★</code> ssh</li>
<li><code>★★★</code> Test Driven Development (TDD)</li>
<li><code>★★★</code> systemd</li>
<li><code>★★★</code> shell/unix/command line</li>
<li><code>★★★</code> network protocols (TPC, HTTP)</li>
<li><code>★★★</code> network debug tools (tcpdump, netcat, wireshark)</li>
<li><code>★★★</code> linux debug tools (dmesg, journalctl, strace, lsof)</li>
</ul>
</section>
<section>
<p>Clojure Ecosystem </p>
<ul>
<li><code>★★★</code> pedestal</li>
<li><code>★★★</code> datomic</li>
<li><code>★★★</code> core.async</li>
<li><code>★★★</code> JDK Libraries (java.time, java.net, ...)</li>
<li><code>★★★</code> pathom</li>
<li><code>★★★</code> transit</li>
<li><code>★★★</code> ring</li>
<li><code>★★★</code> aws-api</li>
<li><code>★★★</code> fulcro</li>
<li><code>★★★</code> re-frame/reagent</li>
<li><code>★★★</code> spec</li>
<li><code>★★★</code> bidi</li>
<li><code>★★★</code> lein</li>
<li><code>★★★</code> tools.deps (clojure command line)</li>
<li><code>★★★</code> tools.build</li>
<li><code>★★★</code> shadow-cljs</li>
<li><code>★★☆</code> native-image (GraalVM)</li>
<li><code>★★☆</code> kafka</li>
<li><code>★★☆</code> sci/babashka</li>
<li><code>★★☆</code> XTDB</li>
<li><code>★★☆</code> malli</li>
<li><code>★★☆</code> reitit</li>
<li><code>★★☆</code> Carmine (redis)</li>
<li><code>★★☆</code> java.jdbc/next.jdbc</li>
<li><code>★☆☆</code> protojure (gRPC)</li>
</ul>
</section>
</section>
</main>
</body>
</html>