Ifeanyichukwu Welechi is the technical founder of Nerdjango Labs and of Planbok, the wallet infrastructure product Nerdjango Limited owns. He leads the engineering work at the agency, including the smart contract development it sells, and he comes to that work from a security research background.
That background is why contract security is part of the engagement rather than a later purchase. Every contract gets a review pass before deployment, and its failure modes are written down for whoever inherits it.