{"id":2503694,"url":"https://alion.io/job/firebird-mechanical-principal-engineer","title":"Mechanical Principal Engineer","company":{"id":2031237,"name":"Firebird","domain":"firebird.ai","url":"https://alion.io/company/firebird-ai","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Spark","truth_index":{"grade":"C","score":61,"open_postings":14,"ghost_share":0.643,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Yerevan, Armenia"],"countries":["AM"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":34000,"max_usd":87000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2629},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-07-01T00:00:00Z","employer_posted_date":"2026-07-01","last_verified_at":"2026-11-07T23:04:00Z","board_verified":true,"closed_at":null,"days_open":129,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":129},"description":"About the role\nWe are looking for a Mechanical Principal Engineer to provide technical leadership across the\ndesign, development, implementation, commissioning, and operation of mechanical and HVAC\nsystems within our infrastructure. The role will have a strong focus on HVAC, cooling, ventilation, and other critical\nmechanical systems, ensuring they are designed and operated to meet the highest standards\nof reliability, efficiency, safety, and performance. The Mechanical Principal Engineer will serve as\na senior technical authority, working closely with multidisciplinary engineering teams,\ncontractors, consultants, and equipment vendors.\nWhat You'll Do\nMechanical & HVAC Engineering\nLead the design, development, and technical review of HVAC, cooling, ventilation, and other mechanical systems.\nDevelop and review engineering calculations, equipment selections, specifications, layouts, and technical solutions.\nEnsure HVAC and mechanical systems are appropriately sized, integrated, and optimized for operational requirements.\nReview system performance, thermal requirements, cooling capacity, redundancy, and energy efficiency.\nTechnical Leadership\nAct as the principal technical authority for mechanical and HVAC engineering matters.\nProvide technical direction and guidance to mechanical engineers and multidisciplinary project teams.\nReview and approve mechanical and HVAC designs, calculations, drawings, specifications, and technical documentation.\nEstablish and maintain engineering standards, best practices, and technical requirements.\nProject Delivery & Coordination\nLead mechanical and HVAC engineering activities throughout the project lifecycle, from concept and detailed design through installation, testing, commissioning, and handover.\nCoordinate HVAC and mechanical systems with electrical, MEP, construction, infrastructure, and other engineering disciplines.\nWork closely with contractors, consultants, vendors, and equipment manufacturers to ensure successful project delivery.\nParticipate in equipment selection, factory acceptance testing, site acceptance testing, commissioning, and system performance validation.\nReliability, Performance & Optimization\nEnsure the reliability, availability, maintainability, and efficiency of critical mechanical and HVAC systems.\nAnalyze system performance, equipment failures, and operational issues and develop corrective and preventive solutions.\nIdentify technical risks and recommend improvements to system redundancy, resilience, energy efficiency, and operational performance.\nSupport the development and implementation of preventive maintenance and operational strategies for critical mechanical and HVAC equipment.\nDocumentation & Compliance\nReview and maintain technical documentation, specifications, calculations, drawings, commissioning procedures, and maintenance requirements.\nEnsure mechanical and HVAC systems comply with applicable codes, standards, regulations, safety requirements, and project specifications.\nSupport technical evaluations of vendors, equipment, and proposed engineering solutions.\nProvide technical input during project reviews, audits, inspections, and handover activities.\nWhat You'll Bring\nBachelor's degree in Mechanical Engineering or a related engineering discipline.\nSignificant experience in mechanical engineering, with strong expertise in HVAC and cooling systems.\nProven experience designing, implementing, commissioning, or operating complex mechanical and HVAC systems.\nStrong understanding of HVAC design principles, thermal management, cooling systems, ventilation, pumps, heat exchangers, and related mechanical infrastructure.\nExperience providing technical leadership on complex engineering projects.\nStrong knowledge of applicable engineering codes, standards, and safety requirements.\nExperience working with contractors, consultants, equipment manufacturers, and multidisciplinary engineering teams.\nStrong analytical, problem-solving, and technical decision-making skills.\nAbility to review and interpret engineering drawings, specifications, calculations, and technical documentation.\nStrong communication and coordination skills.\nProficiency in relevant engineering and design software.\nNice to Have\nExperience in data centers, mission-critical facilities, industrial facilities, or power infrastructure.\nExperience with data center cooling systems, chilled water systems, CRAC/CRAH units, cooling towers, dry coolers, heat exchangers, pumps, and associated HVAC infrastructure.\nExperience with high-availability and redundant mechanical systems.\nExperience with commissioning and operational readiness of mission-critical facilities.\nProfessional engineering certification or equivalent qualification.","description_format":"text","description_chars":4730,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Centers & Colocation","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2026-10-14T06:59:48Z"}],"visa":[],"liveness":{"score":6,"band":"cold","label":"Long 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