在专业领域上，洪茂诚自1976年加入建屋发展局，并于1988年受委为武吉班让与三巴旺市镇理事会总经理。
Mr Ang carved out a niche for himself at HDB , which he joined in1976.Rising through the ranks , he was appointed the General Manager of Bukit Panjang and Sembawang Town Council by1988 .
三市镇