The idea to establish a Belarusian Silicon Valley first appeared when Tsepkalo was visiting
Silicon Valley during his diplomatic service in the USA. He was impressed by the effectiveness of the ecosystem, which stimulated the development of technology companies. Lukashenko announced the creation of the High Tech Park in 2003, and saw it as a modernization tool to boost industries such as agriculture, education, health care and military defense. In July 2004, the head of the
Presidential Administration Ural Latypov and Tsepkalo gave an online press conference where they described the future park's concept. The organization was established on 22 September 2005, and on 7 October 2005 Tsepkalo received the director's post. He saw the park as a tool to stop IT experts leaving the country, and as an enabling environment for Belarusian start-ups. In 2009 he called the park the "Belarusian Silicon Valley". The government guaranteed a one-year $300,000 loan with a 17% interest rate to help get it up and running, which the HTP paid back in two years. By 2014, 138 companies were registered in the Park, and its total production reached $650 million. The public image of programming careers rose rapidly; some public schools initiated additional education courses in it. According to Tsepkalo, IT industry growth in Belarus surpassed the world average several times and the HTP's net export exceeded the total of the national industrial plants. In 2015 a conflict erupted between the government and the HTP administration when the authorities announced a 1% tax raise and tripled its contribution to the Social Security Fund. Tsepkalo warned the authorities of the
brain drain danger and referred to data that even with reduced taxes a programmer from HTP paid three times the national average tax. The tax rates were locked until 2020 based on the agreement that the companies from HTP would benefit not only the IT industry but the Belarusian economics in general. Apart from the active defence of HTP residents and employees' interests, Tsepkalo supported detained IT entrepreneurs on multiple occasions. In 2016, he voted for the removal of an "illegal business practices" law from the
Criminal Code of Belarus, saying that the rule was "a relic of the Soviet-era" that undermined Belarusian developers' position on foreign markets.
Aliaksandr Kaniuk, who was the Prosecutor General then, declared that he was obliged to follow the letter of the law. On 2 March 2017, Tsepkalo was dismissed from the director's post at the HTP by presidential decree. The news came without warning for HTP employees. According to Tsepkalo, his dismissal was in fact provoked by his active social position and a conflict with security officials. By early 2017 the software development industry annual turnover in Belarus reached $1 billion, with such companies as
Wargaming.net,
Maps.me,
Viber among the HTP membership. According to the media, Tsepkalo's dismissal had been grounded on his unwillingness to redirect the HTP companies towards the development of other Belarusian industries. Noting Tsepkalo's merits in the creation and development of the HTP, analysts paid attention to its weaknesses: selectivity of the HTP residents, prevalence of outsourcing developers, excessive bureaucratization, and officialism. After Tsepkalo left the HTP leadership, he was criticised by his successors. The new HTP director
Vsevolod Yanchevski, former presidential aide on ideology who was sanctioned by the EU for his role in repression and propaganda after the 2010 elections, made a politically charged statement in August 2020, noting that Valery Tsepkalo could have faced prison over tax charges during his HTP leadership, but the case was resolved. After the HTP, Tsepkalo continued his career in international consulting on innovative enterprises. He consulted governments of the former USSR countries on the establishment of strong IT clusters and took part in a large IT project in Saudi Arabia. He contributed to the development of the Mirzo Ulugbek Innovation Center (ICSU) in
Uzbekistan. In 2018 he founded Prabook.com, an online biographical library. His first active comeback to the Belarusian media was in 2018 when he commented on the intended growth of the HTP members' number. According to Tsepkalo, such a step would significantly damage the quality of provided services. Nevertheless, in 2018 HTP got 15 thousand new employees. By 2020, more than 25% of Belarusian start-ups resided in the HTP, innovative technologies accounted for more than a third of country's export. ==Presidential campaigns==