His father, a member of the Communist party, organized big music festivals, which allowed young Heger to meet many local high profile musicians.

He held junior managerial positions at several small companies earlier, including several restaurants and bathroom accessory producer Intercomp.

He also spent about 18 months in the United States and became acquainted with Juraj Droba, who later went on to become the Governor of the Bratislava Region a prominent liberal politician in Slovakia.

[3][4] In 2016, Heger was persuaded to run for an MP seat by prominent figures of the Slovak Charismatic movement Branislav Škripek and Richard Vašečka [sk], who were themselves active in politics.

[2] In the 2016 parliamentary election, Heger gained a seat in the National Council of the Slovak Republic for the populist party Ordinary People and Independent Personalities (OĽaNO).

After the 2020 OĽaNO electoral victory, Heger forfeit his parliamentary seat to join the government, which is not compatible with the position of an MP in the Slovak constitutional system.

The most important tasks with respect to the pandemic were ensuring Slovakia's ability to finance its spending needs and overseeing preparation of the national Recovery and Resilience Plan to access the Next Generation EU funding from the European Union.

[7] As prime minister, Heger has won praise from his coalition partners for his diplomatic skills, which facilitated more constructive functioning of the government in comparison to the combative style to his predecessor Matovič.

[9] After the successful motion of no confidence ended Heger's cabinet, political scientists Dana Malová and Juraj Marušiak assessed his entire premiership as weak and largely nominal, citing his authority being undermined by Matovič, and Boris Kollár, Speaker of the National Council and leader of the coalition partner We Are Family.

His plans were met with a strong backlash on social media, where claims that a massive hike of real estate tax was imminent mushroomed.

[19] In February 2023, Heger expressed that he would be willing to send Slovak professional combat troops to fight in Ukraine as part of Slovakia's alliance commitments.