HR Manager

About Marcurius Multi-Mission Solutions

Marcurius Multi-Mission Solutions is a fast-growing defense technology company headquartered in the Tampa Bay area, Florida. Founded by U.S. and U.K. veterans, Marcurius brings decades of frontline experience across Special Operations and Intelligence missions, with deep expertise in asymmetric warfare and the real-world employment of unmanned systems.

Marcurius is building a new kind of unmanned systems company- multi-domain, multi-platform, and mission-driven. We integrate battle-proven platforms, resilient command-and-control architectures, and operator-led doctrine to deliver capabilities that work in contested environments. Our initial focus is the rapid fielding of advanced Unmanned Surface Vessels (USVs) for modern maritime operations.

Role Overview

Marcurius is seeking a hands-on, execution-driven HR Manager to lead and scale our day-to-day US People operations. In this role, you will partner directly with leadership, functional managers, and external partners to build practical, compliant, and mission-focused HR processes that support our growing engineering, manufacturing, and operational teams.

Key Responsibilities

• Cooperate with the recruitment team, manage job descriptions, structured selection, approved offers, onboarding and offboarding for technical, manufacturing and business roles.
• Maintain employment records, Form I-9 processes, work-authorization verification and retention schedules; coordinate E-Verify where applicable.
• Advise managers on performance, attendance, conduct and employee relations. Conduct impartial investigations, document evidence and escalate sensitive decisions to leadership and counsel.
• Administer compensation reviews, benefits, leave and payroll changes with Finance and the appointed provider; verify approvals and resolve discrepancies.
• Apply relevant federal, state and local requirements, including wage and hour rules, equal employment opportunity, disability accommodations and protected leave where applicable.
• Maintain policies and manager guidance. Track employment-law changes with counsel and translate them into approved, workable procedures.
• Coordinate role competence, induction and training records. Confirm required manager, EHS and IT approvals before personnel begin restricted work or receive access.
• Support workforce planning, retention, succession and manager development. Report headcount, vacancies, turnover, training completion and outstanding people risks.
• Protect employee and applicant information through restricted access, accurate records and approved retention and disposal arrangements.
• Coordinate personnel-security and contract-related workforce requirements with Compliance and IT; verify applicability before adding screening or hiring restrictions.

Required Qualifications

• Bachelor's degree in Human Resources, Business Administration, or a related field (or equivalent practical professional experience).
• 5+ years of progressive US HR generalist experience, with proven capability in employee relations and independently advising managers.
• Strong hands-on knowledge of US labor standards, wage and hour compliance (FLSA), leave administration, accommodations, and confidential recordkeeping.
• Practical experience managing onboarding workflows and working with HRIS, payroll, and benefits administration platforms.
• Sound judgment, strong investigative skills, and the ability to handle sensitive situations with discretion and professionalism.
• Excellent written and verbal communication skills, with comfort operating autonomously in a fast-paced technical, manufacturing, or defense-oriented environment.
• Must be legally authorized to work in the United States.

Preferred Experience

• HR professional certification (e.g., SHRM-CP / SHRM-SCP or HRCI PHR / SPHR).
• Prior HR experience within Defense, Aerospace, Hardware/Engineering, or manufacturing environments.
• Specific knowledge of Florida state employment regulations and multi-state compliance.
• Experience supporting workforce screening, security clearance alignment, or export-controlled (ITAR/EAR) work environments.

Work Environment

Primarily onsite at Marcurius facilities in Clearwater, Florida, with direct work in workshops, vessels, docks, and field-testing environments. The role supports prototype development, electrical integration, and sea-trial preparation in a fast-paced setting with changing priorities and close cooperation across engineering, software, operations, and test teams.

Why Marcurius

Marcurius is a people-first, execution-focused organization assembling a small, high-impact team of engineers and operators. This role offers the opportunity to design and field electrical systems that directly enable real-world maritime missions and help build the technical foundation of a next-generation unmanned systems company.