Offiong started his career with Newcastle United as a youth but never made a first team appearance for the club. During his time at Newcastle, Offiong was capped by England at under-20 level and loaned out three times. His first loan out was at Darlington in November 2002 on a two-month loan. Darlington decided not to extend his loan spell for a third month in February. He scored four goals in nine league appearances for the club. He was then sent out on loan to Motherwell in January 2003 for the rest of the 2002–03 season, where he made nine appearances from the substitutes bench. He joined York City on a month's loan in March 2004 and made four appearances.
Offiong left Newcastle at the end of the season and during 2004 to 2005 had some brief positions abroad in places like Turkey, South Korea, and Belgium. But finally Offiong returned home joined the Doncaster Rovers on a free transfer, but was limited to only 5 appearances at the club and subsequently left at the end of the season.
Hamilton Academical
accepted him in 2006 with a contract to keep him at the club until May 2009. He was named player of the month for August 2007. He did well, and netted his first senior hat-trick when Hamilton ran out 3–0 winners at New Douglas Park against Dunfermline Athletic on 9 February 2008. This was also his fifth goal in three games against the former Scottish Premier League. Hamilton Academical secured promotion to the Scottish Premier League at the end of a hard-fought season. He made his Scottish Premier League debut in a 3–1 victory against Dundee United and scored his first SPL goal with the winner in a 1–0 win against Inverness Caledonian Thistle. He signed a new contract with Hamilton in December that would expire at the end of the 2009–10 season.
Despite bids from Colchester United and Greek Super League side Skoda Xanthi, Offiong joined the League One team Carlisle United on 25 August 2009 for £75,000 which would rise to £90,000 if Carlisle achieved promotion to the Championship. Offiong's first goal was on 26 January 2010, against Exeter City in a League game, which Carlisle won 3–2, with Offiong making a last-gasp winner in the 91st minute.
On 30 March 2010, Offiong joined Swedish third-tier team Östersunds FK in a 15-week loan deal, which lasted until 18 July 2010. He teamed up with Ostersunds FK's former Newcastle United, Blackburn Rovers and Livingston player-coach Lee Makel, but his term was cut short by injury after only seven weeks. One day prior to the 2010–11Conference National season commencing, Offiong joined Darlington on loan for the second time in his career on an initial one-month deal. After his loan spell at Darlington, Offiong picked up a thigh injury which ruled him out of action for three weeks. Offiong left Carlisle by mutual consent on 4 January 2011.
Offiong joined Conference club Gateshead on 4 March, signing a contract until the end of the season. Making his debut the following day in a 1–1 draw with Altrincham at Moss Lane. He scored his first goal for Gateshead on 22 March 2011 against Grimsby Town at Blundell Park. He was released by Gateshead at the end of the season.
In May 2011, Offiong signed for the Australian side Oakleigh Cannons. He made his debut on 29 May 2011 as a 60th-minute substitute in a 1–0 win against Springvale White Eagles. His first goal for Oakleigh came 10 days later in a 2–3 loss against VTC Football.
Blyth Spartans
On 29 September 2011, Blyth Spartans announced that they had signed the 'jet heeled' striker, following a spell in Australia, hoping that International Clearance would be received in time to face Bedlington Terriers at Croft Park on the following Saturday in the FA Cup. Offiong made his debut for Blyth on 15 October 2011 in a 2–1 win over Whitby Town in the FA Cup Fourth Qualifying Round. On 13 November 2011, it was announced however that Offiong had left the club after just a month at Blyth.
