Sequence Systems

Sequence Systems is a premier executive search and staffing recruitment agency with over 30 years of industry leadership. The company specialises in connecting top-tier professionals with impactful organisations across environmental, engineering, construction, science, and manufacturing sectors. Sequence offers comprehensive recruiting services including executive search, direct hire placements, temporary staffing, contract placements, temporary-to-full-time conversions, outplacement services, long-term recruiting, contracted HR services, board of director searches, and merger and acquisition support. The agency operates across more than 120 distinct industry practice domains, positioning itself as a specialist rather than a generalist recruiter.

Sequence Systems has established deep expertise across multiple core industries. The company specialises in environmental recruitment, including legacy environmental remediation, advanced bioremedial technologies, CEQA and NEPA compliance, air and water quality, archaeology, wildlife biology, and environmental compliance. In construction, Sequence recruits across single-family, multifamily, commercial, retail, municipal, institutional, facilities, transportation, infrastructure, and heavy civil sectors. The agency also serves engineering and surveying disciplines, natural resources including mining, exploration, forestry, and conservation, planning and code enforcement, climate change and greenhouse gas (GHG) expertise, environmental health and safety (EH&S) compliance, green energy including wind and solar, science and clean technology, manufacturing across multiple sub-sectors, agriculture, waste management, and light industrial supply chain and logistics.

Sequence operates globally with a presence across North America, Europe, Australia, China, Africa, and Southeast Asia, maintaining its headquarters in Roseville, California. The agency is recognised as the world's leading recruiter for niche environmental, engineering, and construction personnel, with a reputation built on delivering results for private equity firms, multinational corporations, government agencies, and non-profit organisations. Clients choose Sequence for its unparalleled technical knowledge, extensive industry network, advanced recruiting methodologies, and commitment to the philosophy that 'a handshake still means everything,' ensuring long-term partnerships and exceptional outcomes across evolving markets and emerging industry fields.