 Nyorai kuenderera mberi kweiyi ndima - Muna Chivabvu 2014, Ssewankambo akashevedzwa kuSweden U21 squad kekutanga. Akaita kutanga kwake kweU21 timu yenyika, achiuya semuchinjikwa wemaminetsi makumi masere nemasere, mukukunda 2 0 kurwisa Sweden U21 musi wa4 Chikumi 2014. Mwedzi mitatu gare gare musi wa9 Gunyana 2014, Ssewankambo akaita kutanga kwake kwekutanga kweSweden U21 uye akatamba mutambo wese, mukukunda 4-3 vachipesana neTurkey U21. Mumutambo unotevera, akaita imwe kutanga kweU21 timu yenyika uye akatamba maminetsi makumi manomwe nematatu asati achinjiswa, mukurasikirwa ne2-0 kurwisa France U21. Mumutambo wekudzoka, Ssewankambo akaiswa pabhenji rekutsiva, sezvo timu yenyika yeU21 yakakwanisa kukunda kushomeka nekuvakunda 41 kuti vakwanise kuenda kuEFAFA European Under-21 Championship. Akaita kuoneka kaviri kweSweden U21 pakati pa11 Chikumi 2015 na16 Chikumi 2015 vachipesana neDenmark U21 neAlbania U21. Zvisinei, Ssewankambo haana kuita kudonha U21 chikwata chenyika nokuda UEFA European Under-21 Championship. Mushure mekupedza rinenge gore kure nechikwata chenyika cheU21, akaita mutambo wake wekutanga weSweden U21, achitanga mutambo neSerbia U21 musi wa24 Kurume 2017, asi akatambura kukuvara kwakamuona achitsiviwa muminiti yegumi. Muna Chivabvu 2017, Ssewankambo akashevedzwa kuSweden U21 squad yeEFAFA European Under-21 Championship. Zvisinei, akaonekwa katatu sechinhu chisina kushandiswa, sezvo Sweden U21 yakabviswa mumutambo weGroup Stage. Mushure meizvi, Ssewankambo akazove wenguva dzose yeU21 timu yenyika, achiita gumi akateedzana anotanga pakati paGunyana 2017 naGumiguru 2018. Munguva iyo, akawana chinangwa chake chekutanga cheSweden U21, mukukunda 30 kurwisa Malta U21 musi wa10 Gumiguru 2017. Zvisinei, mumutambo neBelgium U21 musi wa16 Gumiguru 2018, Ssewankambo akatumirwa kunze kwemutambo muminiti yechi41 nekuda kwekadhi tsvuku, mukurasikirwa ne3-0, mune izvo zvinova kuoneka kwake kwekupedzisira kwechikwata chenyika cheU21. Kutevera izvi, akaenderera mberi nekuita makumi maviri nerimwe kuoneka uye akarova kamwe chete kuSweden U21. 