Daeseong Yun
Senior Hydrogen Project Manager
Pohang-si
Summary
Application Engineer and Technical Project Engineer with 10+ years of experience in energy, industrial, and mission-critical systems.
Strong background in application engineering, commissioning, testing, and technical project execution for hydrogen, LNG, and industrial facilities.
Proven ability to translate contract and customer requirements into control strategies, functional design documentation, and executable technical solutions while identifying and mitigating technical risks.
Experienced in vendor technical coordination, system validation, and customer-facing engineering within international project environments.
Overview
11
11
years of professional experience
10
10
Certifications
Work History
Senior Hydrogen Project Manager
RIST (POSCO R&D)
01.2025 - Current
- Supported application engineering and testing of hydrogen gas heater systems, Mission Critical Facilities, for POSCO HyREX decarbonization project ($30B CAPEX).
- Performed commissioning, testing, and validation of hydrogen systems operating at up to 800°C and 6 bar.
- Managed hydrogen piping, instrumentation, control devices, and combustions, ensuring technical compliance with design intent.
- Translated experimental requirements into technical specifications and supported next-phase system modifications.
- Coordinated with external vendors on combustor manufacturing, technical scope, and budget execution.
Associate PM
Kohygen
12.2023 - 01.2025
- Delivered Mission Critical Facilities, two hydrogen refueling station projects, totaling $15M, compliant with SAE J2601 (700–800 bar systems).
- Acted as technical interface between design firms, construction contractors, and equipment vendors (compressors, chillers, air compressors).
- Reviewed vendor technical documentation, drawings, and compliance to contract scope.
- Identified technical risks, field deviations, and supported mitigation plans to avoid schedule and cost impacts.
- Supported permitting and regulatory coordination with local authorities.
Senior Field Service Engineer
Palfinger Korea
07.2022 - 12.2023
- Provided application-level field support, commissioning, and troubleshooting for electric, hydraulic, and pneumatic crane systems.
- Supported delivery and commissioning of 20 railway crane units ($16M each) and 80 commercial cranes.
- Performed root cause analysis (RCA) and corrective actions for field issues.
- Coordinated with global headquarters on technical claims and corrective measures.
Startup Founder (Project Mnager)
Salpy
03.2020 - 07.2022
- Led end-to-end development of a compact 3D sterilization module from concept to mass production.
- Defined system architecture, prototyping, testing, and certification (FCC, CE, KC).
- Managed suppliers, manufacturing process, and technical risk mitigation.
- Secured and registered 3 patents related to system design.
Project Engineer
TIDE Institute
03.2019 - 12.2019
- Supported technical project execution for an international EPC infrastructure project funded by KOICA, coordinating engineering, procurement, and construction activities.
- Acted as technical interface between local contractors, international consultants, and government stakeholders.
- Reviewed technical drawings, specifications, and scope alignment against contract requirements.
- Identified execution risks related to schedule, constructability, and technical feasibility, and supported mitigation planning.
- Supported commissioning readiness, system handover, and documentation review.
- Gained hands-on exposure to international project governance, reporting, and cross-cultural technical coordination.
Marine Engineer
SK Shipping
04.2015 - 03.2019
- Operated and maintained LNG dual-fuel propulsion and power generation systems, Mission Critical Facilities, onboard LNG carriers ($250M assets).
- Maintained electrical systems (440V), UPS, generators, HVAC, boilers, and safety systems.
- Executed preventive and corrective maintenance, commissioning tests, and failure recovery.
- Interpreted P&ID, electrical schematics, and control logic for safe operation.
Education
Bachelor's Degree - Marine Engineering
Mokpo National Maritime University
Mokpo01.2015
Skills
Project Manage
Certification
EPA 608 Universial (USA)
Summary Of Qualification
- Experienced Project Manager and Engineer with over 10 years of expertise in LNG, hydrogen, and rotating equipment projects
- As Sr.PM, on Managing Hydrogen heater project of POSCO (HyREX_$30B)
- As PM, Carried out two Hydrogen Station Projects each $7.5M
- Gas & Hydrogen Systems (Refueling Stations, Preheaters, Combustion Systems)
- Rotating Equipment (LNG Engines, Boilers, Compressors, Cranes, Turbines)
- Maintain equipment and Understand P&ID, PFD, schematic, Electric drawing
- Project Management (PMP Certified)
- International Project Execution (EPC, Service, Startups)
- Customer & Stakeholder Management
- Technical-Commercial Leadership
Patents
- 10-2020-0076865, 10-2186302, 2020-06-24, Compact with sterilization function
- 10-2021-0018545, 10-2299460, 2021-02-09, Compact with sterilization function
- 10-2021-0113884, 10-2431877, 2021-08-27, Compact with sterilization function
Personal Information
- Date of Birth: 1991.07.30
- Gender: Male
Timeline
Engineer Industrial Safety (Korea)
06-2026
EPA 608 Universial (USA)
12-2025
OSHA 30 (USA)
11-2025
Senior Hydrogen Project Manager
RIST (POSCO R&D)
01.2025 - Current
PMP(Project Management Professionals) (USA)
12-2024
Gas Engineer, Passed written exam (Korea)
06-2024
Craftsman Gas (Korea)
12-2023
Craftsman Fork Lift Truck Operator (Korea)
12-2023
Associate PM
Kohygen
12.2023 - 01.2025
Senior Field Service Engineer
Palfinger Korea
07.2022 - 12.2023
Startup Founder (Project Mnager)
Salpy
03.2020 - 07.2022
Project Engineer
TIDE Institute
03.2019 - 12.2019
High Voltage Training (Korea)
08-2017
Advanced Liquefied Gas Tanker Cargo Operation (Korea)
04-2015
Marine Engineer
SK Shipping
04.2015 - 03.2019
3RD Class officer(Marine Engineer License) (Korea)
01-2015
Bachelor's Degree - Marine Engineering
Mokpo National Maritime University