Bitcoin security expert Andreas Antonopoulos has joined e-commerce company CoinSimple as an advisor.

The Hong Kong-based platform enables customers to choose how they process their digital currency payments. They can use BitPay, Coinbase, GoCoin or do it themselves via Armory and Electrum wallets.

This isn't the first time Antonopoulos has worked with the company, CoinSimple confirmed in a statement:

CoinSimple argues it can provide the best bitcoin price for its customers, as they can use multiple payment processors simultaneously and shop around for the best offer at any given time.

The platform can also accept more than one cryptocurrency depending on the choice of payment processor and customers can switch between processors automatically if one goes out of action.

CoinSimple

is launching its Software-as-a-Service (SaaS) product at the Inside Bitcoins conference in London today. The company said additional plugins for e-commerce store functionality will be released at a later date.

Antonopoulos said he is confident in CoinSimple’s platform:

Last year, CoinSimple's potential was also recognised by seed-stage funding outfit Seedcoin when the incubator invested 200 BTC in the company during its SF1 round.

Earlier this month, Antonopoulos announced he was leaving the post of chief security officer at bitcoin wallet and information services company Blockchain. He is now an advisor to the company's board.

In recent years Antonopoulos has advised several bitcoin startups, lectured on cryptocurrencies and published more than two hundred articles on security, cryptography, cloud computing, data centres and a range of other topics.

He currently works at RootEleven, a technology incubator he founded in January 2013, which focuses on cryptocurrencies.

Disclaimer: CoinDesk founder Shakil Khan is an investor in BitPay.