Chief Marine Engineer

Employee Status

Location: Clearwater, FL - Onsite

Marcurius Multi-Mission Solutions is a fast-growing Defense technology company headquartered in Clearwater, Florida. Founded by US and UK 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 fuse battle-proven technologies, 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.

Marcurius is seeking a hands-on Chief Marine Engineer to serve as the senior technical authority for marine systems across our USV platforms.

This role owns marine systems architecture and execution
, including propulsion and machinery integration oversight, system layout, interfaces, and technical decision-making from build through testing, sea trials, and operational iteration.

As a Chief-level Engineer
, you will lead by example while building and guiding the Engineering Team
, setting technical standards, and ensuring marine systems are robust, serviceable, and mission-ready in a fast-moving startup environment.

Candidates must be eligible to obtain and maintain US Security clearance (if not currently held).

• Lead the Marcurius Engineering Team and associated subsystems specialists
• Act as the Technical Authority for all sub-systems design and integration
• Set engineering standards, design practices, and integration approaches
• Provide technical direction, mentorship, and guidance to Engineers
• Demonstrate strong leadership, communication, and collaboration within a diverse, multi-national team
• Serve as the primary engineering liaison with the Naval Architect during build and integration phases
• Collaborate on mass properties, center of gravity, and stability considerations related to installed systems and modular payloads
• Oversee propulsion integration from preliminary design through sea trials
• Evaluate and integrate propulsion solutions including outboard, inboard and PWC-derived propulsion systems
• Lead machinery layout, 3D packaging, and interface definition across hull, propulsion, sensors, payloads, and electrical systems using CAD tools

• Define and manage mechanical and structural interfaces supporting autonomy, sensors, communications, and mission payload integration
• Design and integrate platform survivability features, including environmental protection, thermal management, shock isolation, and vibration mitigation
• Iterate platforms with modularity, scalability, maintainability, and field repair in mind
• Own lifecycle considerations for USV platforms, including upgrades, refits, and continuous improvement of fielded systems
• Work directly with suppliers, fabricators, and shipyards to develop and integrate custom components and subsystems
• Support transition from prototype to production in coordination with manufacturing and supply chain teams
• Define and execute dock testing, sea trials, and post-test analysis for hull, propulsion, and mechanical systems
• Develop test plans, acceptance criteria, and platform readiness reviews
• Lead root cause analysis and corrective actions for systems failures observed during testing or operations
• Document design decisions, trade studies, and lessons learned to support iteration and future platform variants
• Act as the Principle Authority in developing documenting and producing maintenance schedules and before & after use routines
• Interface with customers, partners, and regulators on platform readiness, performance, and compliance

• 10+ years of experience in marine engineering or mechanical engineering with a strong focus on small craft or USVs
• Hands-on experience designing, building, and supporting high-performance marine platforms, including composite and/or aluminum structures
• Strong understanding of marine systems, propulsion and electrical systems integration, structural design, and machinery layout
• Proven ability to take marine platforms from concept through fabrication, integration, testing, and sea trials
• Practical experience troubleshooting and resolving propulsion, electrical, structural, or integration issues in real-world environments
• Experience owning or stewarding marine platforms beyond initial design, including upgrades, refits, and operational improvements
• Comfortable operating as the Senior Marine Engineering Authority within a small, fast-moving engineering team
• Strong technical communication skills, including design rationale, trade studies, and test documentation
• Bachelor’s degree in Engineering or equivalent experience