At 67 years, Head of Public Service and Secretary to the Cabinet Joseph Kinyua is the man who still wields too much influence in President Uhuru Kenyatta's Jubilee government.
Even after attaining retirement age of 60 years, it seems the career civil servant is not going home any time soon.
In the running of Jubilee government, the University of Nairobi-trained economist is the driver.
Immediately after President Kenyatta took over leadership after 2013 election, Kinyua was among the first people elevated in his new government.
From the Permanent Secretary in the Ministry of Finance during the previous administration, Kinyua got a new position: Head of Civil Service and from there, he has just been rising and rising.
Slowly, he edged out Francis Kimemia as Secretary to the Cabinet. Since then, it has just been Kinyua's show in government where he seems to have the President's ear.
For a man who started as an assistant lecturer at the University of Nairobi in 1979, his rise to the pinnacle of power probably confirms that he is always equal to the task.
In a civil service career spanning over four decades, Kinyua has served in nearly all high-profile financial positions; from the Ministry of Finance to Central Bank of Kenya.
By 2022, he will be 70. At the time President Kenyatta leaves the presidency, perhaps it will also be the time for him to call it a day after nearly half a century at the centre of the country's leadership.