宋欣先后任(ren)航(hang)(hang)天(tian)(tian)(tian)部(bu)第(di)(di)三(san)(san)研(yan)(yan)究院(yuan)三(san)(san)部(bu)一室技術員(yuan),中(zhong)央講師團漢中(zhong)分團講師,航(hang)(hang)空航(hang)(hang)天(tian)(tian)(tian)部(bu)(后為航(hang)(hang)天(tian)(tian)(tian)總公司)第(di)(di)三(san)(san)研(yan)(yan)究院(yuan)三(san)(san)部(bu)科(ke)技處助理(li)員(yuan)、科(ke)技處副(fu)(fu)(fu)處長(chang)、主(zhu)任(ren)助理(li)、副(fu)(fu)(fu)主(zhu)任(ren),中(zhong)國航(hang)(hang)天(tian)(tian)(tian)機電集團第(di)(di)三(san)(san)研(yan)(yan)究院(yuan)研(yan)(yan)試中(zhong)心(xin)主(zhu)任(ren),中(zhong)國航(hang)(hang)天(tian)(tian)(tian)科(ke)工(gong)集團第(di)(di)三(san)(san)研(yan)(yan)究院(yuan)副(fu)(fu)(fu)院(yuan)長(chang),中(zhong)國航(hang)(hang)天(tian)(tian)(tian)科(ke)工(gong)集團第(di)(di)三(san)(san)事業(ye)部(bu)副(fu)(fu)(fu)部(bu)長(chang),中(zhong)國航(hang)(hang)天(tian)(tian)(tian)科(ke)工(gong)集團第(di)(di)三(san)(san)研(yan)(yan)究院(yuan)院(yuan)長(chang),中(zhong)國航(hang)(hang)天(tian)(tian)(tian)科(ke)工(gong)集團第(di)(di)二(er)研(yan)(yan)究院(yuan)院(yuan)長(chang)、黨委(wei)(wei)副(fu)(fu)(fu)書記。第(di)(di)十一屆、十二(er)屆全國政協(xie)委(wei)(wei)員(yuan)。
2013年1月,任中國(guo)航(hang)天科工集(ji)團(tuan)公司副總經理(li)、黨組成員。
2018年9月,中國(guo)機械(xie)工(gong)業(ye)集團有(you)限(xian)公(gong)司董(dong)事、黨委副書記(ji)。