Recommended expert
Alejandro Diaz Bandres
Senior R&D Acoustic Engineer
Experience
Feb 2024 - Present
2 years 1 monthSenior R&D Acoustic Engineer
Knobloch Strings SLU
- Optimize acoustic performance and durability of musical strings.
- Develop and apply relaxation models to predict material behavior under tension and stress over time.
- Design technical tools to assist with new product development, focusing on physics-based acoustics and material constitutive models.
- Improve production techniques and quality control processes to ensure consistent frequency behavior and sustainability.
Jul 2022 - Jan 2024
1 year 7 monthsVibroacoustic Engineer
ICR SL
- Performed FEM simulations using COMSOL to model ground vibration propagation and structural responses.
- Carried out acoustic certification of rolling stock.
- Ran advanced lab and field testing, including Experimental Modal Analysis (EMA), Operating Deflection Shapes (ODS) and Transfer Path Analysis (TPA).
- Conducted data analysis using Matlab and Python.
- Completed vibroacoustic projects for diverse industries, delivering technical reports and root-cause analysis for noise and vibration issues.
Aug 2020 - Jun 2022
1 year 11 monthsAcoustic Engineer
Alstom Transport Link Austria GmbH
- Executed interior and exterior noise predictions for light railway vehicles using proprietary simulation tools.
- Led noise source identification and control of ductwork noise in HVAC systems.
- Collaborated with design teams to comply with noise and vibration requirements.
- Defined and supervised acoustic type tests at client sites, ensuring compliance with client requirements.
Oct 2018 - Sep 2019
1 yearResearch Assistant
Chair of Vibroacoustics of Vehicles and Machines, Technical University of Munich
- Conducted automated measurements using Polytec PSV-500 scanner vibrometers.
- Developed MATLAB scripts for automated modal analysis and signal processing.
- Performed modal analysis using Vibrant ME'Scope software.
Apr 2017 - May 2018
1 year 2 monthsWorking Student - Optics Group
ARRI AG
- Executed MTF-based automated measurements of prototype targets and optical filters in a laboratory setting.
Oct 2015 - Oct 2016
1 year 1 monthWorking Student - Technologies in Environmental Acoustics
Müller BBM GmbH
- Performed in situ measurements of rolling noise using CPX and statistical pass-by (SPB) methods.
- Conducted sound absorption coefficient measurements with an impedance pipe.
- Conducted surface roughness measurements both in situ and in the laboratory to support environmental acoustics assessments.
Jan 2015 - Jul 2015
7 monthsWorking Student - Data Acquisition Systems and Robotics
National Instruments Munich
- Prepared and processed measurement data for rolling noise prediction using SPERoN, ensuring consistency and reliability of input parameters.
- Superimposed surface profiles and carried out quantitative calculations of surface properties in Matlab for detailed acoustic surface characterization.
- Evaluated and formatted measurement protocols, contributing to clear documentation of test setups, procedures and results.
- Assisted in communication with clients in Spanish, supporting technical discussions and the clarification of measurement results.
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Manufacturing (7 years), Education (1 year), Media and Entertainment (1 year), Professional Services (1 year), and Automotive (0.5 years).
Manufacturing
Education
Media and Entertainment
Professional Services
Automotive
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Quality Assurance (7 years), Research and Development (7 years), and Product Development (5.5 years).
Quality Assurance
Research and Development
Product Development
Summary
Senior R&D Acoustic Engineer specialized in physics-based acoustics, vibroacoustics and materials characterization. Skilled in FEM (COMSOL), scripting/analysis (MATLAB, Python) and advanced testing (EMA, ODS, TPA), with knowledge in plastics and acoustics-based product optimization.
Skills
- Simulation: Comsol, Ansys
- Testing: Ema, Ods, Tpa
- Scripting/analysis: Matlab, Python
- Daq: Ni/labview, Oros, B&k, Polytec
- Materials Characterization
Languages
Spanish
NativeCatalan
AdvancedGerman
AdvancedGreek
AdvancedEnglish
AdvancedEducation
Oct 2014 - Jun 2019
University of Munich / University of Salzburg
B.Sc. Engineering Science · Engineering Science · Munich, Germany
Oct 2007 - Jun 2009
University Mozarteum Salzburg
M.A. Concert Guitarist · Concert Guitarist · Salzburg, Austria
Oct 2003 - Jun 2007
University Mozarteum Salzburg
B.A. Guitar and Jazz Pedagogy · Guitar and Jazz Pedagogy · Salzburg, Austria
Certifications & licenses
LABVIEW APPLICATION DEVELOPMENT
National Instruments Munich
NI WORLDCLASS - DATA ACQUISITION SYSTEMS AND ROBOTICS
National Instruments Munich
Driving license category B
Profile
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Frequently asked questions
Do you have questions? Here you can find further information.
Where is Alejandro based?
Alejandro is based in Girona, Spain and can operate in on-site, hybrid, and remote work models.
What languages does Alejandro speak?
Alejandro speaks the following languages: Spanish (Native), Catalan (Advanced), German (Advanced), Greek (Advanced), English (Advanced).
How many years of experience does Alejandro have?
Alejandro has at least 9 years of experience. During this time, Alejandro has worked in at least 7 different roles and for 7 different companies. The average length of individual experience is 1 year and 3 months. Note that Alejandro may not have shared all experience and actually has more experience.
What roles would Alejandro be best suited for?
Based on recent experience, Alejandro would be well-suited for roles such as: Senior R&D Acoustic Engineer, Vibroacoustic Engineer, Acoustic Engineer.
What is Alejandro's latest experience?
Alejandro's most recent position is Senior R&D Acoustic Engineer at Knobloch Strings SLU.
What companies has Alejandro worked for in recent years?
In recent years, Alejandro has worked for Knobloch Strings SLU, ICR SL, and Alstom Transport Link Austria GmbH.
Which industries is Alejandro most experienced in?
Alejandro is most experienced in industries like Manufacturing, Media, Entertainment and Publishing, and Professional Services. Alejandro also has some experience in Education and Automotive.
Which business areas is Alejandro most experienced in?
Alejandro is most experienced in business areas like Quality Assurance (QA), Research and Development (R&D), and Product Development.
Which industries has Alejandro worked in recently?
Alejandro has recently worked in industries like Manufacturing.
Which business areas has Alejandro worked in recently?
Alejandro has recently worked in business areas like Product Development, Quality Assurance (QA), and Research and Development (R&D).
What is Alejandro's education?
Alejandro holds a Master in Concert Guitarist from University Mozarteum Salzburg, a Bachelor in Engineering Science from University of Munich / University of Salzburg and a Bachelor in Guitar and Jazz Pedagogy from University Mozarteum Salzburg.
Does Alejandro have any certificates?
Alejandro has 3 certificates. These include: LABVIEW APPLICATION DEVELOPMENT, NI WORLDCLASS - DATA ACQUISITION SYSTEMS AND ROBOTICS, and Driving license category B.
What is the availability of Alejandro?
Alejandro is immediately available full-time for suitable projects.
What is the rate of Alejandro?
Alejandro's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.
How to hire Alejandro?
To hire Alejandro, click the Meet button on the profile to request a meeting and discuss your project needs.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
1000
750
500
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Market avg: 660-820 €
Market avg: 660-820 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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