BRANISLAV KOLEDIN Phone: 206-***-****

Email: adwi3n@r.postjobfree.com

www.linkedin.com/in/koledin

SUMMARY OF QUALIFICATIONS

Mechanical/Thermal engineer skilled in new product development, thermal design and project management. I have a track record of designing products from conception and prototype through testing and manufacturing. Self-motivated, hands-on, committed to innovation and self-improvement, good organizational, documentation and communication skills. Have extensive computer, CAD, CFD and FEA skills. Designed products to meet different industry standards

and requirements.

EXPERIENCE HIGHLIGHTS

MECHANICAL DESIGN:

Designed consumer products and medical devices. Worked in research and development. Designed electro and opto-mechanical packaging for EMC, solving stress and vibration design problems using FEA software. Engineered power transmission systems as well as pneumatic systems. Used wide range of materials from various types of plastic and aluminum to steel and stainless steel as well as composite materials. Designed aluminum castings and extrusions, injection molded plastic, sheet metal and machined parts using GD&T. Designed optical train including optical mounts and stages for laser-based display system as well as high-precision positioning mechanisms. Designed small adjusting mechanisms. Designed for manufacturability and ease of assembly. Evaluated and tested vendor-supplied parts. Designed tooling, jigs and fixtures for welding, machine and assembly process. Wrote assembly methodology in mechanical, electrical and pneumatic assembly. Experienced with sensors, test and measurement systems. Designed test fixtures and wrote test protocols. Experienced planning, organizing and conducting technical projects. Provided technical/leadership guidance to drafters/designers, engineering technicians and shop personnel.

THERMAL DESIGN:

Conducted system-level and sub-system thermal design, modeling and testing for high volume products. Led CFD analysis and its validation at both the circuit board and system levels. Provided thermal designs that best balance performance, cost, manufacturability, acoustics and reliability. Selected thermal components and suppliers. Conducted mechanical environmental testing validation. Managed the design and testing of thermal test vehicles.

CAD, FEA, OTHER SOFTWARE:

Pro/ENGINEER R16 through Creo R6(10,000 hours of solid modeling, drawings, large assemblies, complex surfacing and piping), SolidWorks R2019(17,000 hours of creation of solid models, drawings, sheetmetal parts and mechanisms), FloEFD V17,Icepak R14, Flotherm R9.2, SolidWorks Flow R2018,Catia V5R22, Unigraphics V8, CFDesign R10, Inventor R2010, AutoCAD R2004, Ansys Workbench 2020, Cosmos/Works R2013, Algor R20, LabView, Mathcad, Matlab, Python, Windchill R11, Agile, Arena, Teamcenter.

EMPLOYMENT HISTORY:

2021-2023 MECHANICAL DESIGN ENGINEER Aerojet Rocketdyne, Redmond, WA

Designed prototypes for new propulsion designs and test fixtures. Parts modeling and drawing creation. Used Creo R5.

2019-2020 MECHANICAL DESIGN ENGINEER Blue Origin LLC, Kent, WA

Supported secondary structure development and analysis for BE-4 engine program. Designed brackets and tubes in large assemblies. Parts modeling and drawing creation. Tubes stress calculations, brackets FEA analysis, stress and random vibration using ANSYS R2020. Used Mathcad, Matlab, Windchill R11, Creo R6 and its piping module.

2019 SENIOR MECHANICAL/THERMAL ENGINEER Meteorcomm, Renton,WA

Thermal modeling to evaluate possible cooling solutions for locomotive radio, using natural convection. Used SolidWorks R2019 and SolidWorks Simulation R2019.

2018 SENIOR MECHANICAL ENGINEER Astronics, Kirkland, WA

Designed enclosure for airplane power supply. Designed prototype for bidirectional 270VDC/28VDC product, unit and PCBA layout, packaging and cooling to meet DO-160G, Used SolidWorks R2018,SolidWorks Flow R2018 and PDM.

2015-2017 SENIOR THERMAL ENGINEER Grakon, Des Moines,WA

System level thermal modeling, design and testing of LED lights for cars, buses and trucks. Used FloEFD V17,

CatiaV5R22, Creo R3, Unigraphics V8, LabView.

2014 SENIOR MECHANICAL ENGINEER Micronics, Redmond,WA

Designed assembly tools for testing cartridge for blood sample analysis, a medical device. Used SolidWorks R2014,

2013-2014 SENIOR MECHANICAL ENGINEER Physio-Control, Redmond,WA

Redesign of Class III medical device, Internal Paddles, for design improvements and manufacturability. Evaluated RoHS compliance for legacy products. Tolerance stack up analysis and DFMECA. Used Creo R2, Windchill R10.2, Ansys R14.5, Minitab 16 and eCentral.

2012-2013 SENIOR MECHANICAL ENGINEER Meteorcomm, Renton, WA

Aluminum casting redesign of locomotive radio. Thermal modeling of different design solutions to optimize natural convection cooling. Thermally tested chosen design. Various cost reduction projects. Used SolidWorks R2013, SolidWorks Flow R2013.

2010-2012 SENIOR THERMAL ENGINEER Microsoft, Redmond, WA

Led thermal analysis and design of a version of the Xbox Kinect system from concept through EV2.Managed a team

of technicians in producing prototypes and thermally testing them through product release. Designed cooling systems for natural and forced convection with a TEC and heat sinks to standards and requirements. Created numerous Icepak and Flotherm models. Wrote thermal test procedures and test analysis reports. Collaborated with teams across various engineering functions. Performed DOE. Used JMP, Flotherm R9.2, Icepak R14 and Wildfire R5.

2008-2009 SENIOR MECHANICAL ENGINEER Systima, Bsquare, Stratos, WA

Systima- Analyzed stress in rapid parachute deployment system. Used Algor R20 and Wildfire R3.

Bsquare- Conducted CFD analysis and thermal design of the Ford Motor Company SYNC II module. Designed natural convection cooling system. Selected thermal components supplier and test lab. Designed (fit and form)PCBA. Wrote test procedures for design validation. Managed design validation testing. Used Wildfire R2 and CFDesign R10.

Stratos - Designed Stainless Steel enclosure for a food packaging machine. Used Wildfire R3.

2006-2007 SENIOR MECHANICAL ENGINEER Microsoft, Redmond, WA

Designed components and subassemblies for surface table (touch screen computer). Created EMI shield system to EN/IEC standards. Redesigned support frame parts. Designed different enclosures. Performed thermal analysis in Flotherm to solve air flow problems. Used Wildfire R2, Intralink R8.0,ANSYSR11 and Flotherm 6.1.

2006 SENIOR MECHANICAL ENGINEER Blue Origin LLC, Kent, WA

Designed supports, attached to primary structure, for electronic parts and propulsion components in an aerospace vehicle using composites and standard aerospace parts. Analyzed stress and vibration using ANSYS R10 and Pro/E Mechanica Wildfire R2. Used Pro/E Wildfire 2 as well as advanced assembly and pro/piping modules.

2005 SENIOR MECHANICAL ENGINEER EKOS, Aculight, Bothell, WA

Aculight-Designed two innovative opto-electro-mechanical packaging solutions for military application; a telescope,

a free space optical system, and a round fiber optical system. Conceptualized solutions and solved design problems. Designed military telescope mounted on a rocket launcher. Used SolidWorks R2005 and R2006 and Algor R16.

EKOS–Worked on product testing and FDA documentation for a medical device.

2003-2004 SENIOR RESEARCH ENGINEER Neah Power Sys, Bothell, WA

Worked on research and development of fuel cells. Researched materials and different designs to optimize space and components layout. Worked on fuel cell system integration, pump design (electrochemical and piezo pumps) for aggressive chemicals, and managed pump and system evaluation and testing. Used SolidWorks R2003.

2002-2003 SENIOR MECHANICAL ENGINEER PATH,Seattle, WA

Provided technical guidance for design and evaluation of different medical devices; vacuum pump for removing fluids after abortion and needle-free injection device. Improved manufacturability and testing of diaphragm. Developed new test methods for product qualification. Used SolidWorks and CosmosWorks R2003.

2000-2001 SENIOR MECHANICAL ENGINEER Microvision, OTI,Bothell, WA

Microvision-Designed optical train for color Retinal Scanning Display. Designed small mechanisms. Worked on electronics packaging, solving thermal and vibration problems using SolidWorks R2000 and R2001, CosmosWorks. Designed different test fixtures for testing image quality.

EDUCATION AND REGISTRATION:

BSME University of Novi Sad, Serbia,

Engineer-In-Training Reg. #18566, 1993. EMC Training Course, CKC, Bellevue, Washington.

REFERENCES AVAILABLE UPON REQUEST

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