At Lloyds, where Larkin spent eight years between 2005 and 2013, he was managing director of personal lending at HBOS before becoming Lloyds managing director of consumer banking.
He then became managing director of consumer banking and director of marketing and small business banking, while in the former role he led an end-to-end overhaul of the digital banking proposition and infrastructure across the group.
Larkin said: “Target Group has always had a strong reputation in the financial services industry and recently it has really started moving up through the gears.
“In an environment of regulatory change and macroeconomic uncertainty financial services providers are looking to proven outsource partners to play an increasing role in their business model.
“Target has aggressive growth plans and has put an impressive infrastructure in place to achieve those aims.
“Helping Target help its clients succeed is a major reason I have joined the firm and I look forward to contributing to the company’s next phase of expansion.”
Paddy Byrne, chief executive officer at Target Group, added: “Ian has vast experience of the areas we operate in and is extremely well qualified to serve as Target’s CFO.
“His leadership experience complements our already strong executive team and will be invaluable as we continue to drive our strategic and financial business transformation.”