His expertise spans mediation, arbitration, legal research, governance advisory, and policy analysis. Wachilonga holds a Bachelor of Laws degree from Africa Nazarene University and a Post Graduate Diploma in Law from the Kenya School of Law, complemented by professional certifications in mediation, legal auditing, and arbitration practice. His work demonstrates a strong commitment to justice sector reform, conflict resolution, and participatory governance.

He has published commentary on mediation and governance, contributed to key national dispute resolution publications, and served as an Associate Editor at the Eastern Africa Journal of International Humanitarian Law.

Beyond legal practice, Wachilonga plays an active role in humanitarian leadership. He serves as a Board Member of the Kenya Red Cross Society National Youth Committee and Chairs the Development Subcommittee, where he leads regulatory, governance, and policy initiatives.