Freelance commissioning specialist

Bojan Zigic — Professional Commissioning Portfolio

More than 15 years of direct international oil and energy experience across commissioning, start-up, fired equipment, hydrogen and gas processing, E&I, controls and technical training.

Open to selected international assignments, including commissioning leadership within established professional scope.

Contact · Capability profile

Professional experience

  • Commissioning and start-up, from completion and systemisation through first fire, performance testing and handover
  • Fired-equipment and combustion troubleshooting, recovery and optimisation
  • E&I, PLC/HMI and burner-management-system validation
  • Plant-specific training for field operators, panel/DCS operators and maintenance crews
  • Commissioning, training and operations handover
  • Site and vendor coordination

Core expertise

Commissioning & First-Start Support

Completion checks, systemisation, punch-list closure, pre-commissioning, energisation, first start, testing and handover.

Fired Equipment & Combustion Recovery

Burners, pilots, draft, fuel/air balance, flame stability, BMS permissives and controlled recovery trials.

E&I, PLC/HMI & BMS Validation

FAT/SAT support, loop and logic checks, cause-and-effect verification, interlocks, trips, valves and field instrumentation.

Operator, Panel-Operator & Maintenance Training

Training built around the client’s real plant, equipment, control philosophy, procedures and operating problems.

Commissioning Handover

Readiness and start-up through coached operation, competency development and documentation handover.

Refresher & Competency Development

Role-specific refresher, abnormal-condition, troubleshooting and requalification experience.

Site & Vendor Coordination

Technical coordination among equipment vendors, contractors, owners and site teams.

Featured project experience

Air Products La Porte HyCo-4

Fired-heater troubleshooting support for a hydrogen and carbon-monoxide production facility in Texas.

Singapore NEXBTL Hot-Oil System

Commissioned, started and troubleshot a hot-oil heater during a renewable-diesel system upgrade in Singapore.

Lugo DEG Regeneration Package

Commissioned and troubleshot a DEG regeneration and reboiler package, including PLC/HMI, instrumentation and BMS validation.

Falcão Phase 2 GRDU

Incinerator package commissioning, logic checks, operator training, testing and optimisation in Angola.

Pančevo Refinery Modernisation

Supported construction completion, instrumentation, commissioning and start-up across hydrogen, sulfur-recovery, utility and process systems.

Plant-specific technical training

Training is tailored to the client’s actual equipment, process configuration, control philosophy, operating procedures and real operating problems. It can be delivered to field operators, panel or DCS operators, and maintenance crews as initial training, refresher training, troubleshooting training, start-up preparation, or part of a commissioning package.

The objective is not to memorise isolated steps. Personnel learn the big picture: how systems interact, what changes during abnormal conditions, the consequences of actions, and why each procedure exists.

International experience

More than 15 years across 49 countries on six continents, covering refining, petrochemicals, hydrogen, gas processing, utilities, offshore facilities and fired equipment.

Transferable commissioning experience

Prepared to apply established commissioning experience in data centres, nuclear, subsea and infrastructure projects. These are sectors Bojan is ready to enter, not sectors in which he claims previous lead-project experience.

Full project archive

The interactive site contains the complete project history, locations and supporting field experience, including a 2026 Puma Energy / ICE burner-system site-readiness and pre-commissioning visit in Managua, Nicaragua.

Selected Client, EPC & Technology Experience

Organisations, contractors, vendors and technologies encountered through project assignments. Inclusion does not imply a current affiliation or endorsement.

Contact

Email boyan@borhez.org or connect on LinkedIn.