After the March 2021 election, ABC News said that it was unrealistic to achieve preselection in the Perth metropolitan area for the Liberal Party without the support of Goiran or Collier.

In August 2021, it was revealed that Goiran was part of a WhatsApp group called "The Clan", whose purpose was to discuss branch stacking and the preselection of candidates.

Following the reveal of that group, Goiran was temporarily removed from the shadow cabinet and was subject to an internal Liberal Party investigation which was eventually dismissed due to a lack of evidence.

From 1998 to 2009, Goiran worked for several different law firms, and in December 2000, he was admitted to the Supreme Court of Western Australia as a barrister and solicitor.

[11] In February 2008, the Liberal Party preselected him as the second candidate on their ticket for the South Metropolitan Region of the Western Australian Legislative Council, the parliament's upper house, replacing the retiring Barbara Scott.

[3] In February 2016, Goiran replaced Simon O'Brien as the top candidate on the Liberal's South Metropolitan Region ticket for the 2017 election.

By 2016, he had become a key powerbroker alongside fellow MLC Peter Collier and Senator Mathias Cormann, and he had become the leader of the "evangelical right" of the WA Liberal Party.

[17] After the March 2021 election, ABC News said that it was unrealistic to achieve preselection in the Perth metropolitan area for the Liberal Party without the support of Goiran or Collier.

In May 2021, before the new Legislative Council was sworn in, Goiran introduced a motion to establish a select committee into the transparency and accountability of government.

[20] In August 2021, Goiran was revealed to be part of a WhatsApp group called "The Clan", alongside Collier, Cormann and other Liberal Party members.

[46][47] Goiran identifies as a conservative, saying that human life should be protected "from conception until natural death, and that lifelong marriage between a man and a woman guarantees children their biological birthright of a mother and a father".

[6] He put forward the "Swedish model", which makes prostitution legal but buying sex and brothel ownership illegal.

[51] In 2019, during a debate on a gender reassignment amendment bill, Goiran said that people considering a sex change should receive "psychological treatment".

[6] In March 2023, he voiced his support for Victorian Liberal MP Moira Deeming after she attended the anti-transgender "Let Women Speak" rally, organised by British activist Kellie-Jay Keen-Minshull and gate-crashed by neo-Nazis.

[52] Following this, Deeming successfully sued John Pesutto, leader of the Victorian Liberal Party, for defamation after he publicly accused her of associating and sympathising with neo-Nazis and white supremacists.

[56] In 2021, Goiran was one of three Legislative Council members that opposed a bill to criminalise protesting within 150 metres (490 ft) of abortion clinics.

He was the only member of the Joint Select Committee on End of Life Choices to oppose recommending for the government to legalise voluntary euthanasia for patients suffering from terminal illnesses, saying that it is "a recipe for elder abuse", and that it would have a negative impact on efforts to prevent suicide.

[63] Goiran has attracted criticism for being one of only two members of the Parliament of Western Australia that refuses to reveal their COVID-19 vaccination status, alongside Legalise Cannabis WA MLC Sophia Moermond.

When Parliament passed a motion that MP's must have three doses of COVID-19 vaccines or provide a valid exemption to be in the chamber, Goiran did not exit, showing that he has met those conditions.