In 1965 he finished his study of economy at the Nederlandse Economische Hogeschool.
He also served on the Public Body Rijnmond. He was editor of the magazine Economisch-Statistische Berichten (English: Economic-Statistic Messages) between 1965 and 1971. In 1970 he was elected to the council of the Public Body Rijnmond, he was elected there a further three times until 1982.
Between 1976 and 1980 he held the executive portfolio for economic affairs, utilities and education in the Body.
After his time at the House of Representatives and Public Body Rijnmond he served in economic functions at the Ministry of Economic Affairs and municipality of Rotterdam. In this capacity he earned the title Portuguese Personality of the Year 1983, concerning the Portuguese of Rotterdam.
He earned this title for his 1,5 year work in resolving a dispute between employers and employees in the port. He died on 15 August 2014 in Capelle aan den IJssel.
He served as a member of the House of Representatives of the Netherlands between 1971 and 1976 for the Labour Party. De Ruiter served as a member of the House of Representatives of the Netherlands between 1971 and 1976 for the Labour Party.