Calling Biber on TeXstudio

Question

For the first time, I'm creating a document which really needs a long bibliography, i.e. requires the biblatex package or similar. I've read some questions and answers here, and I think I pretty much replicated a common structure of the .tex file. Here's what I have:

\documentclass{article}
\usepackage[brazil]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{csquotes}
\usepackage[backend=biber,citestyle=authoryear,style=authoryear]{biblatex}
\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@book{bueno,
  title={Vísceras da memória: uma leitura da obra de Pedro Nava},
  author={Bueno, Antônio Sérgio},
  volume={15},
  year={1997},
  publisher={Editora Ufmg},
}
@article{castro,
  title={Além de Braverman, depois de Burawoy: vertentes analíticas na sociologia do trabalho},
  author={Castro, Nadya Araújo e Guimarães, Antônio Sérgio Alfredo},
  journal={Revista Brasileira de Ciências Sociais},
  volume={6},
  number={17},
  year={1991},
}
@book{souza,
  title={Multiculturalismo e racismo: uma comparação Brasil-Estados Unidos},
  author={Souza, Jessé e Sant'Anna, Alayde},
year={1997},
  publisher={Paralelo 15},
}
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}
\tableofcontents

\section{Introdução}
Aqui vamos falar de algumas obras, nomeadamente \cite{bueno} e \cite{souza}. Talvez falemos também de \cite{castro}.

\printbibliography
\end{document}

(I use TeXstudio 2.6.6 with pdfLaTeX.)

The pdf output shows the citation texts just like their labels, only on bold (e.g., my second citation prints as "souza"), and it lacks the bibliography. The log file gives me this:

LaTeX Warning: Citation 'bueno' on page 1 undefined on input line 39.
LaTeX Warning: Citation 'souza' on page 1 undefined on input line 39.
LaTeX Warning: Citation 'castro' on page 1 undefined on input line 39.
LaTeX Warning: Empty bibliography on input line 41.

I also get a very strange ! Paragraph ended before \DeclareBibliographyStrings was complete.

I suspect there might be a problem with the configurations of TeXstudio, although I have read the accepted answer on this question and followed the steps therein.

So my (pretty dumb) question is: What am I doing wrong?