Lefteris Plomaritis

Experience

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  OneSubsea

  Jun 2012 - May 2016

  • Designed O&G subsea and surface production equipment (wellheads, tubing hangers, pressure testing tools, lifting equipment) in line with API 6A/17D and ASME BPVC VIII, including material specification, welding specifications and inspection plans.• Drafted manufacturing and fabrication drawings of O&G equipment in line with ASME Y14.5, and applying GD&T and DfM. • Conducted stress analysis calculations by means of hand calculations (Mathcad) and use of FEA.• Created Bills of Materials for production (SAP) and authored assembly, testing, operation and maintenance procedures to pass equipment through Product Qualification.• Provided Technical Support to assembly, manufacturing and test teams and carried out Root Cause Analysis to resolve Field Performance and Non‐Conformance Reports. Show less

  • Mechanical Design Engineer

    Jul 2012 - May 2016

  • Graduate Design Engineer

    Jun 2012 - Dec 2013
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  Surgical Innovations Ltd

  May 2016 - Jul 2017

  Design And Development Engineer

  • Managed a 3-member team for the design and development of medical devices (retractors, seals, clamps) according to Quality Management Systems ISO 13485 and 21CFR820 and monitored project execution towards commercialisation.• Created 3D models and drawings of components and assemblies for prototyping, testing and production.• Hosted risk management (DFMEA/PFMEA) sessions and authored the risk assessment documents in line with ISO 14971.• Conducted mechanical testing and approved the protocols of 3rd parties for biocompatibility and sterility testing.• Supported Production Engineering in production line design, relaxation of tolerances, R&R studies, creation of assembly fixtures, statistical analysis for process validation and specification of inspection requirements. Show less

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  Rolls-Royce

  Sept 2017 - Nov 2018

  Mechanical Design Engineer

  • Led cross-functional teams (Materials, Manufacturing, Assembly) for the design and development of engine shafts and discs, integrating cost, performance, reliability and manufacturing restrictions through negotiation with the associated groups.• Created design concepts for shaft & disc modifications/new parts and passed them through the RR Approval Process.• Conducted requirement analysis and system integration studies, and hosted risk assessment (DFMEA) sessions.• Resolved disc and shaft manufacturing non-conformances and conducted root cause investigations (8D approach). Show less

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  HYDRUS

  Nov 2018 - Sept 2023

  Senior Mechanical Design Engineer

  • Acting as Company's Technical Lead for the integration of 3rd party electro-mechanical systems in Nuclear projects (Hinkley Point C).• Analysed technical requirements and carried out techno-economic studies to evaluate feasibility of marine vessel modifications.• Conducted engineering studies (piping, structural, electrical, HVAC) to ensure regulatory approval of marine vessel modifications, in line with SOLAS, MARPOL and CSR requirements.• Developed 3D models and drawings, including P&IDs, electrical diagrams, piping and structural drawings, to compile the technical file of marine vessel modifications.• On-site supervision of shipyard teams and troubleshooting during drydocking to ensure correct interpretation of vessel modification requirements and regulatory compliance.• Mentoring of junior engineers, review of their design work and monitoring of their progress. Show less

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  Athens International Airport

  Sept 2023 - now

  Mechanical Engineer