EletronicaParaArtistas
Arduino
34
9
EIP-Course
Example files for EIP Course
Java
4
9
Helder da Rocha
Mentor
(1 reviews)
US$15.00
For every 15 mins
ABOUT ME
Seasoned full-stack writer and developer
Seasoned full-stack writer and developer
I teach programming (mostly Java) and I've been researching, writing about, experimenting with and teaching Java and Web technologies since 1995. I wrote a book on HTML and another on JavaScript in 1996/1998 (in Portuguese) and in 2019 two books on data visualization with JavaScript in English ("Learn D3.js" and "Learn Chart.js" by Packt). I have also authored several tutorials, slides, code and textbooks on Java, Java EE, programming tools, patterns, techniques, methodologies, HTML, CSS, JavaScript, SVG, XML/XSLT/XSD and related technologies. My favorite subjects include D3.js, Java and Java EE, interactive graphics and data (mostly XML) transformations. I love teaching and solving problems. I also enjoy electronics, Arduino and IoT and have written a guide on those topics.
Portuguese, Russian, Spanish, English
Brasilia (-03:00)
Joined May 2016
EXPERTISE
20 years experience
I have used, taught and written about Java since its inception in 1995. I wrote a tutorial in 1996 which later became a textbook used in ...
I have used, taught and written about Java since its inception in 1995. I wrote a tutorial in 1996 which later became a textbook used in courses by 3 companies in São Paulo and Rio de Janeiro. I was a Java instructor at Sun Microsystems (since 1997), I have several Java-related certifications and have spoken about Java at many events including JavaONE. I am currently reading several specs and making simple programs as part of my research on Java 12, since I intend to write a book on that subject.
18 years experience
It's my favorite XML parsing language. I love to solve XSLT puzzles.
It's my favorite XML parsing language. I love to solve XSLT puzzles.
18 years experience
I have used XML and related technologies since its inception and developed many projects using XPath, XSLT. I have also written tutorials...
I have used XML and related technologies since its inception and developed many projects using XPath, XSLT. I have also written tutorials and textbooks on XML, XSLT, XPath, SVG and XML Schema, which I used to teach XML related technologies in Brazilian companies.
18 years experience
Great to find and extract things from the deep web, writing screen scrapers and XSL transformation. I also love to solve XPath challenges.
Great to find and extract things from the deep web, writing screen scrapers and XSL transformation. I also love to solve XPath challenges.
7 years experience
I use SVG since 2009. In 2010 I wrote a tutorial and textbook used in training about SVG. Recently I have spoken about SVG in conferences...
I use SVG since 2009. In 2010 I wrote a tutorial and textbook used in training about SVG. Recently I have spoken about SVG in conferences (such as the Brazilian W3 conference in 2015) and teaching it in companies (mostly as part of a D3 course). I also wrote a book on D3.js which was published by Packt in 2019.
18 years experience
I have written books about JavaScript and libraries (1998/2000 and 2019). I teach several JavaScript-based courses and have used it in ma...
I have written books about JavaScript and libraries (1998/2000 and 2019). I teach several JavaScript-based courses and have used it in many projects (ES2015, React, Vue, D3.js and Chart.js).
21 years experience
I have used and taught HTML since the early days. I wrote a guide on how to write Web Sites back in 1995, and a book on HTML and CSS in 1...
I have used and taught HTML since the early days. I wrote a guide on how to write Web Sites back in 1995, and a book on HTML and CSS in 1996, and many other textbooks on HTML, CSS and related technologies for training companies.
REVIEWS FROM CLIENTS
Helder's profile has been carefully vetted and approved as a Codementor. Connect with Helder now, and leave a review for them once you're done!
SOCIAL PRESENCE
15205 Reputation
3
17
37