Uche Ajuonuma
Senior Mechanical Engineer · Mission-critical thermal & mechanical systems
uchearistotle@gmail.com
+1 587 438 0890
linkedin.com/in/uchearistotle
uchearistotle.com
Sheet R-01 · Specification sheet
Uche Ajuonuma
Senior Mechanical Engineer · Mission-critical thermal & mechanical systems
Current
SR. MECH. ENGINEER,
NANO NUCLEAR ENERGY
NANO NUCLEAR ENERGY
Experience
13+ YEARS
Sectors
NUCLEAR · THERMAL PROCESSING · OIL & GAS · ROTATING MACHINERY · AUTOMOTIVE
Core codes
ASME BPVC III & VIII · B31.1 · B31.3 · Y14.5 · CSA N285.0 · B51 · Z662
Primary CAD
SIEMENS NX · SOLIDWORKS · INVENTOR · TEAMCENTER
Education
B.ENG MECHANICAL · CSWP · PSM I
Right to work
CANADIAN CITIZEN · AUTHORISED IN THE US
Based in
CALGARY, ALBERTA
Availability
OPEN TO CONVERSATIONS · 4 WEEKS NOTICE
Work mode
REMOTE PREFERRED · HYBRID IF IN CANADA
01 · Profile
Senior mechanical engineer with 13+ years delivering high-consequence mechanical and thermal systems across nuclear power, oil and gas, thermal-processing equipment, rotating machinery and automotive production. I lead complex designs from requirements and first principles through thermal and structural evaluation, detailed engineering, drawings, specifications, fabrication, validation, commissioning and deployment.
That is the rigour resilient data-centre cooling infrastructure needs: heat transfer, fluid dynamics, CFD-informed design, pressure systems, constructability, vendor coordination, technical documentation, design standardisation, and disciplined resolution of safety- and reliability-critical issues.
02 · Fit
What the requirement usually says, and where I have done it.
| Typical requirement | Direct evidence |
|---|---|
| Mission-critical facilities & power generation | Advanced Micro Modular Reactor pressure boundaries (Nano Nuclear); Cobalt-60 in-bay handling equipment in an operating nuclear facility (Westinghouse). |
| Mechanical cooling & thermal systems | Moving-bed heat exchangers and bulk-material handling redesigned end-to-end (Solex); thermal-fluid design across every role since 2020. |
| Heat transfer & fluid dynamics | Duty, LMTD and surface sizing on production thermal equipment; thermal evaluation of reactor components covering gradient, expansion and creep. |
| CFD analysis | Flow simulation used to drive geometry on high-pressure wellhead and valve bodies, and CFD-informed decisions on thermal equipment. |
| Design basis & technical specifications | Licensing-aligned design-basis content for PSAR inputs, system design descriptions, safety classification and design criteria (Nano Nuclear). |
| Engineering & construction drawings | Controlled fabrication drawings, GD&T and BOMs to ASME Y14.5 across five employers and three regulatory regimes. |
| Equipment submittals & procurement support | Led supplier drawing and equipment-submittal review; procurement support and supplier engagement for first-of-a-kind nuclear hardware. |
| Concept-to-deployment engineering | Component ownership from functional requirement and first-principles loads through to fabrication readiness and commissioning closeout. |
| Design reviews & standardisation | Led formal design reviews and technical issue closure (Westinghouse); established repeatable design rules across a reactor system (Nano Nuclear). |
| Fabrication, validation & commissioning | Shop inspection, test readiness, installation planning, issue resolution and commissioning closeout on delivered thermal equipment (Solex). |
| Vendor & manufacturer coordination | Fabricators and project teams coordinated through build; hands-on supplier and production support on an operating assembly line. |
| Root-cause analysis & risk mitigation | Failure investigation and corrective design cutting production errors 20 % (SKF); field-issue investigation raising reliability 15 % (IWS). |
| Technical leadership & cross-functional work | Drove decisions across thermal-hydraulics, structures, safety, materials, manufacturing and procurement; mentored designers in GD&T, PDM and nuclear-quality documentation. |
Each row links to the work it came from on the selected work sheets.
03 · Experience
Senior Mechanical Engineer
Nano Nuclear Energy Inc. · United States- Lead mechanical design of pressure-retaining and internal components for advanced Micro Modular Reactor systems at high temperature and multi-MPa pressure, integrating safety, reliability, thermal performance, manufacturability and ASME code requirements.
- Own component definition from functional requirements and first-principles load development through detailed configuration, interface control, specifications, engineering drawings, technical reviews, procurement support and fabrication readiness; establish repeatable design rules that improve consistency across the reactor system.
- Perform and coordinate thermal and structural evaluations addressing heat transfer, thermal expansion, creep, fatigue, interacting load cases, load paths and mechanical boundaries to protect long-term component and system reliability.
- Drive multidisciplinary decisions across thermal-hydraulics, structural analysis, safety, materials, manufacturing, procurement and system integration; reduce complex issues to defensible, actionable engineering resolutions.
- Resolve high-consequence manufacturability and supplier challenges involving material selection, fabrication sequencing, tolerance control, inspection access and nuclear-grade quality requirements before release to production.
- Develop licensing-aligned design-basis content for PSAR inputs, system design descriptions, safety classification, design criteria and configuration-controlled records, maintaining traceability between requirements, analysis and physical design.
Mechanical Design Engineer
Nano Nuclear Energy Inc. · United States- Developed advanced-reactor mechanical components for demanding thermal and pressure conditions, advancing concepts through trade studies, detailed design, structural validation, multidisciplinary review and manufacturability refinement.
- Defined component interfaces, mechanical boundaries, tolerances, load paths and drawing requirements to integrate reactor pressure-boundary and internal systems without compromising inspection, assembly or service performance.
- Prepared controlled engineering deliverables and supported design reviews, procurement decisions and supplier engagement for first-of-a-kind nuclear hardware.
Mechanical Design Engineer
Solex Thermal Science · Calgary, Canada- Led redesign of moving-bed heat exchangers and bulk-material handling equipment, cutting manufacturing time by 60 % while maintaining structural integrity, thermal performance and continuous-duty reliability.
- Engineered pressure equipment and thermal systems to ASME Section VIII and CSA B51 using stress calculations, FEA, material selection and design-for-fabrication reviews.
- Produced fabrication-ready models, drawings, piping layouts, flow diagrams and BOMs that accelerated production and shortened time-to-market by 15 %.
- Led supplier drawing and equipment-submittal reviews and coordinated with fabricators and project teams through shop inspection, test readiness, installation planning, technical issue resolution and commissioning closeout.
Senior Mechanical Designer
Westinghouse Electric Canada · Peterborough, Canada- Led mechanical design of in-bay equipment for handling and processing Cobalt-60 in a nuclear facility, delivering safe, maintainable systems compliant with CSA N285.0, ASME B31.3 and ASME Y14.5.
- Defined equipment layouts, load paths, mechanical interfaces, GD&T, BOMs, validation plans and fabrication drawings while coordinating with engineering, operations, safety, quality and manufacturing stakeholders.
- Led formal design reviews and technical issue closure, exposing interface, constructability, maintainability and operational conflicts before fabrication and preventing downstream errors, rework and safety risk.
- Managed design schedules to achieve 95 % on-time delivery and mentored junior designers in SolidWorks modelling, GD&T, PDM revision control and nuclear-quality documentation.
R&D Engineer
Intelligent Wellhead Systems · Calgary, Canada- Designed smart lockout devices and high-pressure wellhead control equipment for oil-and-gas operations, applying ASME B31.1, CSA Z662, OH&S and field-service requirements.
- Developed and evaluated more than 20 new-product prototypes in the first 90 days using CAD and additive manufacturing, accelerating design learning and technical decision-making.
- Reduced product-development time by 20 % and increased reliability by 15 % through rapid prototyping, tolerance-stack analysis, field-issue investigation, iterative validation and corrective designs based on customer and operating data.
- Released detailed fabrication drawings, BOMs and design documentation, and used Scrum-based execution to shorten development cycles and strengthen cross-functional delivery.
Mechanical Designer / Validation Engineer
SKF Group · Calgary, Canada- Designed and validated precision mechatronic systems, including rotary magnetic-levitation bearings and neutron-chopper assemblies for high-speed industrial, compression and wafer-manufacturing applications.
- Performed FEA, tolerance analysis and rotational performance testing to verify dynamic behaviour, structural integrity, precision and durability under demanding operating conditions.
- Reduced production errors by 20 % by leading failure investigation, test-data analysis, corrective design, drawing refinement and disciplined product-quality validation through release readiness.
Mechanical Design Engineer
Innoson Motors · Nnewi, Nigeria- Led mechanical design and development of truck bodies, vehicle components and fabricated structures using Siemens NX, translating operational requirements into cost-effective, production-ready hardware.
- Reduced production time by 20 % through design optimisation, manufacturability improvements and close coordination with fabrication and assembly teams.
- Implemented Teamcenter lifecycle control for components and BOMs, improving configuration discipline and reducing product-development time by 30 %.
- Provided hands-on technical support to suppliers and production teams, applying lean-manufacturing principles and cross-functional schedule ownership to reduce waste, resolve build issues, strengthen reliability and achieve 98 % on-time design delivery.
04 · Technical expertise
Engineering
Codes & documentation
Tools
Education & credentials
05 · Going deeper
Every claim on this sheet has a longer sheet behind it — the constraint that made the job hard, the decision that resolved it and what it cost.
And ten free engineering calculators on uchearistotle.com/bench, built and published because the arithmetic should be available to everyone who needs it.
Uche Ajuonuma · Senior Mechanical Engineer · uchearistotle@gmail.com · +1 587 438 0890 · uchearistotle.com — this PDF is generated from uchearistotle.com/resume.html, so the two cannot disagree.
Sheet F-01
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