Our Team

PeterJohn is Chief Technology Officer and Partner at Useful Group. He is responsible for the agency’s overall vision, architecture, and execution across all web and marketing systems. He plays a central role in setting technical direction, evaluating complex client needs, and ensuring the agency’s solutions are scalable, secure, and aligned with business outcomes.
He is deeply involved in the most critical and high-impact decisions across clients, and his work ensures that Useful Group’s strategy supports both enterprise-level performance and the demands of highly regulated, complex client environments. After beginning his career in fintech, managing low-latency IT infrastructure, and automation systems. From there, he joined a Chicago-area web development agency, growing the business 8x in three years before joining Useful Group as a partner in 2016.
His experience includes custom application development, marketing automation, CRO tooling, Salesforce integrations, cloud infrastructure, and proprietary platform development. He is also the creator of Useful Group’s Atomic Design & Atomic Development methodology. His technical expertise includes Node, React, Laravel, PHP, Javascript, Ionic, WordPress, Drupal, Contentful, AWS, CI/CD, Salesforce, Automations, and Custom Integrations. PeterJohn is based in the Chicago area.