Card's career began in the summer of 1975 as an intern at CH2M Hill, where he became a Group CEO, board member and the largest shareholder of the Denver, Colorado-based global engineering firm.

At CH2M Hill, he was the sponsoring executive and deputy project director for the delivery partner for the London 2012 Olympics.

[2] This tenure saw what was at the time record funding for renewable and carbon-free energy and research, accelerated progress in the environmental remediation of the Department's legacy sites and the completion of the original Human Genome Project, setting the stage for the next wave of major science projects.

He also developed a strategy to maintain the firm's position at the top of the rapidly consolidating engineering and construction sector by selling interests in the firm's substantial infrastructure, power and mining assets to create global Tier-1 engineering and construction capability in oil and gas, mining, power and infrastructure.

Card was the CEO of joint venture Kaiser-Hill in the decommissioning of the Rocky Flats Nuclear Weapons Plant.