Langyi is a licensed Barrister and Solicitor of the Supreme Court of Nigeria. He currently works for the National Agency for the Prohibition of Trafficking in Persons with over ten years of experience in the investigation and prosecution of human trafficking, smuggling of migrants, and sexual and gender-based violence crimes. He also investigates fraud, complex administrative breaches, and human rights abuses.

Langyi was a vetted prosecutor/legal officer attached to the Joint Border Task Force to respond to serious organized crimes with international dimensions. He successfully advised on legal/regulatory compliance between November 2016 to June 2021. This led to the deployment of victim-centred and right-based approaches in countering human trafficking and other organized crimes which led to the rescue of victims, arrest of suspects, disruption of criminal activities and successful prosecutions.

Langyi regularly appears in court to prosecute crimes and facilitates training. He is informed in managing traumatized victims as witnesses in court and is a specialist in international cooperation in criminal matters. Langyi received a Certificate of Commendation from the Director-General of the National Agency for the Prohibition of Trafficking in Persons in 2021 for outstanding performance and contributions to counter human trafficking, smuggling of migrants and sexual and gender-based violence. He is also a member of the Nigerian Bar Association.