Achinike is a Founding and Alternate Managing Partner of Edward & William Law Firm. He serves as Head of Dispute Resolution Practice; very actively involved in Litigation and Alternative Dispute Resolution Practices of the Firm.

Achinike is an advocate for functional, responsive and effective Grievance Remedial System and the Rule of Law in Justice Delivery, more particularly in the Criminal Justice Sector. He has a deep interest in Crime Control and Prevention, especially Money Laundering, Anti-Corruption, Economic and Related Crimes. He is currently promoting a drive for the development of National Policy on De-Incentivization of Corruption in Nigeria; he provides legal service to Government at various levels. He has also participated as Member of the Eminent and Experts Group Meeting (EEGM) of the National Institute for Policy and Strategic Studies, Kuru, Nigeria on the Review of the National Security Policy (NSP) of Nigeria – appraising the National Security Challenges of Boko Haram; Resurgence of Niger Delta Militancy; Separatists Agitation of Independent People of Biafra (IPOB); etc.

As a Legal Consultant, he has provided services in the area of Legal Compliance and Evaluation (Process and Procedure); Due Diligence and Corporate Governance for reputable clients. Between October 2007 to May 2015, he consulted for the Office of (and) the Governor of Rivers State on Process Compliance, Due Diligence, Documentation, Inter-Governmental and related matters. He provides services on Anti Fraud, Corruption and Money Laundering Services; Bribery Risk Assessments for Government Agencies, Private Corporations and Organizations and assists clients set up Policies and Frameworks in relation to those concerns.

Achinike has also provided Legal Advisory on Public Private Partnership and allied services; Investment Law; Construction Law: including Documentations for Infrastructure Financing and Concession, Investor Profiling [Know-Your-Customer (KYC) related service] etc. In recent times, Achinike and members of E&W, working together with a consortium of consultants facilitated, negotiated and documented several multimillion dollars PPP projects between Agencies of the Federation of Nigeria, Private Organizations and Clients of Edward & William, including:
* Advisory on the HLSI/Federal Ministry of Transportation (FMOT)/Nigerian Maritime and Safety Administration (NIMASA) Deep Blue Project on Nigerian EEZ Surveillance, a Public-Private Partnership Initiative.
* Advisory on CRCCI/Federal Ministry of Transportation (Abuja-Itakpe-Warri Railway Line, Warri Sea Port Infrastructure Development), a Public-Private Partnership Initiative.
* Training on Harmonized Standard and Operating Procedure on Arrest and Detention of Persons and Vessels in Nigeria for NIMASA operatives.

Achinike provides General Legal Service (GLS) for international and domestic clients, including consultancy and advisory on Taxation, Maritime, Sports and Entertainment, Medical, ICT and Aviation Laws. He is a Notary Public, authorised by the Supreme Court of Nigeria. He holds a Master of Laws Degree in Criminal Law and Practice and is currently pursuing a Doctorate Degree in Money Laundering, Anti Corruption and Financial Crimes Law.

A member of the Nigerian Bar Association, International Bar Association, Nigeria Institute of Chartered Arbitrators.