# Kadir T.

> Senior Manager, Product Engineering | Product Architect | Technical Program Leadership |

Location: San Mateo, California, United States
Profile: https://flows.cv/kadir

Staff-level Mechanical Engineer and program lead with 10+ years shipping battery systems and complex hardware from concept to production. I lead cross-functional programs across ME, EE, manufacturing, and test, and turn customer needs into shipped product and business outcomes. I’m comfortable owning scope, schedule, suppliers, and exec-level communication.

Highlights: delivered a 400V marine battery as technical project lead for a ~10 person team while coordinating US and Asia suppliers and managing a budget. Helped an eVTOL customer raise more than 50M through aviation module delivery. Earned a U.S. patent for an electrochemical cell cap that cleared Sandia validation and contributed to a $12M raise.

What I’m known for: owning delivery from concept to launch with clear roadmaps, stage-gate rigor, and supplier alignment; turning requirements into architecture and DFX decisions; IP67 sealing, thermal design direction, FEA-guided calls, GD&T and tolerance stacks; DV and PV planning with fast root-cause and corrective actions; and crisp storytelling to executives and customers. Tools include SolidWorks, CATIA V6, ENOVIA PLM, Jira, Confluence, Jama, and PLM/ECO workflows.

How I work: translate requirements into architecture, de-risk with early builds, align suppliers and budgets, and keep decision-makers unblocked with crisp updates. I enjoy roles where I can own delivery and partner with customers to turn technical tradeoffs into business value.

## Work Experience
### Sr. Manager, Product Engineering @ Yield Engineering Systems
Jan 2025 – Present

### Engineering Consultant @ Unknown
Jan 2024 – Present | San Mateo County, California, United States

### Staff Mechanical Engineer @ Stafl Systems
Jan 2023 – Jan 2024 | San Francisco Bay Area
- Designed and integrated FPC routing, module components, module layout, busbars, Ip67 gasket seal and sheet metal enclosure for the company's first high-voltage (400V) battery pack product with successful customer delivery. 11.2Kwh
- Co-Led the design, validation, and manufacturing processes for aviation, marine and vehicle batteries, ensuring high-performance and reliability.
- Designed and manufactured ~5000 cell holders for 3D printing.
- Managed the distribution of project workload and deliverables of two mechanical engineers, simultaneously delivering subassemblies for the HV battery pack utilizing Jira and Confluence.
- Collaborated with cross-functional teams, including electrical, software, systems, and project management, as the project’s technical lead, to develop high-confidence, safe products. 
- Coordinated with machine shops and component suppliers across Asia to ensure timely availability of parts, overseeing part manufacturing and final assembly.
- Designed assemblies and parts based on DFX principles and created 2D manufacturing drawings including plating and powder coating specs.

### Sr. Mechanical Engineer @ Stafl Systems
Jan 2022 – Jan 2024 | South San Francisco, California, United States

### Sr. Mechanical Engineer @ South 8 Technologies
Jan 2020 – Jan 2022 | San Diego, California, United States
- Joined as employee #6, managed one mechanical engineer and a team of technicians, distributed project workload and deliverables.
- Secured Series A Funding by designing battery cap holding up to 1200 psi internal pressure for 18650 / 21700 form factor Li-ion cans, which passed Sandia Lab 3rd party safety validation tests.
- Implemented project management software to have a clear view of milestones, deliverables, projects status, tasks, and timelines.
- Reported to the CEO on milestones, budget and machine purchase progress.
- Acted as the lead engineer on developing high pressure battery housing design in the form of 18650 and 21700.
- Designed, developed and assembled a proprietary injection system for Liquefied High Pressure Gas Electrolyte for 18650 and 21700 cells.
- Enabled the science team to develop electrolyte chemistry rapidly by creating an improved next-generation “coin-cell build device” prototype.

### Mechanical Engineer @ Xos Trucks
Jan 2019 – Jan 2020 | Greater Los Angeles Area
- Successfully created 3D parts and drawings of Battery Pack components for various fabrication methods, including machining, welding, and sheet metal fabrication through CATIA 3D Experience (V6).
- Ensured product requirements are met for Design for Manufacturing (DFM).
- Performed troubleshooting, diagnosis, and repair of Battery Modules, Brackets, AC lines in vehicle build.
- Directed and guided shop technicians on various truck chassis integration and component installation.

### Mechanical Engineer - Technical Sales @ Romeo Power Technology
Jan 2018 – Jan 2019 | Greater Los Angeles Area
- Developed Lithium-ion battery module concepts to deploy in power plants, buildings, and Electric Vehicles including domestic and European luxury carmakers. Capacity ranges from 20 kWh to 100 kWh.
- Supported sales team on technical discussion and communication with customers, both internally and externally.

### Mechanical Design Engineer - Production @ Romeo Power Technology
Jan 2017 – Jan 2018 | Greater Los Angeles Area
- Designed battery module components (busbars, flex sensors, cell holders) for various fabrication methods including machining, laser welding, sheet metal forming, injection molding, casting, extrusion, PCBA and FPC manufacturing.
- Provided specifications to suppliers on DFM, tooling, and part qualification for flexible temperature circuits, plastic cell holders, busbars, sealing components which were used for battery modules and electronic packaging.
- Performed electromechanical integration of Lithium-ion battery pack design with voltage range 400 VDC to 800 VDC, which involves a variety of complex features, such as thermal, voltage clearance, and fabrication considerations.
- Managed product life cycle changes with Engineering Change Order (ECO) through Enovia PLM software.

### Mechanical Design - Product Engineer II @ MEMS Lab
Jan 2015 – Jan 2017 | Greater San Diego Area
•	Managed from conception to marketing of a probe product line. Current customers include companies and entities in the US, Germany, Japan, and Italy.

•	Introduced collaboration and joint product design with key startup companies in the probe space.

•	Designed parts and created CAD models by utilizing Solidworks 2015 for projects varying from solar cell components to pressure vessels and crane structures.

•	Produced engineering designs (Hyperbaric Chamber) through analysis and simulation by utilizing Solidworks 2015 FEA modules. Performed Modal and Time History Dynamic Analysis. Expertise in analysis results interpretation and design implications.

### Mechanical Engineer @ BMT Scientific Marine Services, Inc,
Jan 2013 – Jan 2015 | Greater San Diego Area

### Engineering Consultant @ AMO Tech.
Jan 2013 – Jan 2013 | San Diego
•	Conducting research and testing on Organic Solar Cells (OSC) to define and solve manufacturing and devicephysics problems for a Korean Company at San Diego State University Cleanroom facility.

•	Worked independently with minimal direction.

•	Communicated with clients regarding design questions and concerns.

•	Designed improvements to a roll-to-roll manufacturing prototype. Tested, verified, and transferred know-how to licensing client.

•	Developed pressing and cooling protocol for PET substrate, spray technology for photoactive material, and optimized metal deposition process.

### Energy Surveyor @ Itron
Jan 2012 – Jan 2013
•	Conducted detailed field survey of energy usage for commercial businesses, schools, hospitals, restaurants across California.  

•	Compiled and evaluated field data followed by data analysis/reduction on lighting, HVAC, refrigeration systems, electronics and building insulation type. 

•	Communicated with and persuaded business owners, facility managers, and on-site technical personnel to actively participate in data collection as stakeholders and benefit from the recommendation.

•	Suggested comprehensive process improvements resulting in savings in resources and cost for the company.

### Teaching Associate @ San Diego State University
Jan 2012 – Jan 2012
•	Trained, directed students about fundamental engineering experiments.

•	Maintenaned of all the equipment in the lab.

•	Administrated and organized safe working environment in laboratory for students.

•	Lead different groups for micro fabrication in clean room as their final project.

•	Help students with packages like COVENTORWARE and COMSOL.

•	Production and development of new photovoltaic semiconductors using various technologies.

•	Collected and evaluated students’ homework solutions and project reports.

•	Guide students about the procedure for doing the experiments.

### Research Assistant @ San Diego State University
Jan 2010 – Jan 2012
•	Conduct research and testing on Organic Solar Cells (OSC) and Organic Light Emitting Diodes (OLED) used in electronic devices.

•	Fabricate an OSC prototype using my experience in micro fabrication, photolithography, spin coating, sputtering, soldering, dry and wet etching, material science and electronic testing.

•	Developed unique scaling-up production techniques for OSC from 1"x1" to 16"x12".

•	Developed pressing and cooling protocol for PET substrate, spray technology for photoactive material, and optimized metal deposition process.

•	Responsible for managing contract MEMS jobs (layout, fabrication, packaging and testing).

•	Lead person in MEMS fabrication through PolyMUMPS process at the MEMS cleanroom.

•	SDSU Cleanroom Manager.


## Education
### Graduate in Master of Science in Mechanical Engineering
San Diego State University

### Bachelor's in Mechanical Engineering
Yildiz Technical University


## Contact & Social
- LinkedIn: https://linkedin.com/in/kadirtoksoy

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Source: https://flows.cv/kadir
JSON Resume: https://flows.cv/kadir/resume.json
Last updated: 2026-04-05