Stefan-Aleksandar Kyumyurdzhiev
Aerospace engineering student. I design rocket motors, build sensor systems, and build the software that ties them together.
Aerospace Engineering, TU Sofia · Sofia, Bulgaria
Open to: propulsion, aerospace and defence R&D engineering roles, and summer 2027 internships. Available now, open to relocation.
Projects
High-Altitude Balloon Reconnaissance
1st · EDTH Sofia 2026
A reconnaissance system carried by high-altitude balloons, built as a proof of concept by a team of seven.
In progress · Proof of concept doneD-1 Solid Rocket Motor
~113 N·s · G-class
A G-class KNDX solid rocket motor I designed for the SCAE rocket club, as lead of its propulsion team.
In progress · All parts machined, next: static testSRM Casing Calculator
149 tests
A web calculator that designs a KNDX solid rocket motor and its casing, with every equation checked by hand before it went into the code.
In progress · Motor and casing engine live, next: flight prediction
Experience
Propulsion Lead
SCAE rocket club
2026 – present
Lead a 4-person team that designs and manufactures the club's solid rocket motors.
R&D Mechanical Engineering Intern
Mator Bulgaria
Aug – Nov 2026
Drawing packages and CAD assemblies for industrial machines, plus lathe work and support on manufacturing processes.
Aircraft Engineer
European Air Charter
Mar – Jul 2026
Aircraft engineering at a charter airline, supporting the maintenance of its fleet.
About
I'm in the English-language Aerospace Engineering program at TU Sofia, which I started in 2024. I also competed in short-track speed skating for 15 years: 4 years on the Bulgarian national team, multiple national titles and 6th place at the European Championships.
Skills
SolidWorks · OpenMotor · MATLAB & Simulink · Python · LabVIEW