Sergej Gusew - Heat Transfer Scientist and Engineer

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Available

Hanover, Germany

Check rate

Experience

Aug 2024 - Present

2 years 1 month

Independent Scientist

Ingenieur-Lehrer Company

(2025) Conjugate heat transfer in a horizontal tube
(2025) Unsteady heat conduction for a pavement model
(2025) Recalculation of a heat exchanger
(2025) Thermodynamic calculations for moist air
(2025) Cooling system design for an anaerobic digester
(2024) Shell-and-tube heat exchanger calculator
(2024) Studies on heat transfer to supercritical water in a rod bundle
(2024) Cooling of liquid in a bath

Oct 2007 - Jul 2024

16 years 10 months

Germany

Research and Development Engineer

Funke Wärmeaustauscher Apparatebau GmbH

Developed MATLAB programs for thermal and hydraulic calculations of plate heat exchangers
Designed experimental data processing software with a focus on physical properties
Performed linear and nonlinear regression analysis
Implemented spline interpolation and solved ordinary differential equations with boundary conditions

Jun 2006 - Sep 2007

1 year 4 months

Eggenstein-Leopoldshafen, Germany

Process Engineer

Lauterbach Verfahrenstechnik

Developed Visual Basic programs for thermal and hydraulic calculations of tubular heat exchangers
Investigated heat and mass transfer in humid airflow channels

Sep 1986 - Sep 2004

18 years 1 month

Russian Federation

Professor

Kaluga State University

Taught mechanics, thermodynamics, statistical physics, experimental physics and numerical methods
Researched heat transfer and hydrodynamics in free and mixed convection
Developed teaching methods for physics and interdisciplinary courses with biology

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Education, Manufacturing, Energy, and Chemical.

Education

Manufacturing

Energy

Chemical

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Research and Development and Product Development.

Research and Development

Product Development

Languages

German

Native

Russian

Native

English

Advanced

Education

Oct 2000 - Jun 2000

Institute of Atomic Machines, Russian Academy of Sciences

Doctor of Technical Sciences · Moscow, Russian Federation

Certifications & licenses

Statistics

Experience

Total positions 4

Experience in Education 18 y

Avg length 9 y 6 m

Longest experience 18 y

Global Experience

Countries worked in 2 (Germany, Russian Federation)

Primary country Germany

Expertise

Recent roles Independent Scientist, Research and Development Engineer, Process Engineer

Main industries Education, Manufacturing, Energy

Main business areas Research and Development, Product Development

Qualifications

Highest degree Doctorate

Certifications earned 1

Profile

Created

December 2025

Last Update

June 2026

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Frequently asked questions

Have questions? Find more information here.

Sergej is based in Hanover, Germany and prefers 100% remote projects.

Sergej speaks the following languages: German (Native), Russian (Native), English (Advanced).

Sergej has at least 38 years of experience. During this time, Sergej has worked in at least 4 different roles and for 4 different companies. The average length of individual experience is 10 years and 7 months. Note that Sergej may not have shared all experience and actually has more experience.

Based on recent experience, Sergej would be well-suited for roles such as: Independent Scientist, Research and Development Engineer, Process Engineer.

Sergej's most recent position is Independent Scientist at Ingenieur-Lehrer Company.

In recent years, Sergej has worked for Ingenieur-Lehrer Company and Funke Wärmeaustauscher Apparatebau GmbH.

Sergej is most experienced in industries like Education, Manufacturing, and Energy. Sergej also has some experience in Chemical.

Sergej is most experienced in business areas like Research and Development and Product Development.

Sergej has recently worked in industries like Manufacturing and Energy.

Sergej has recently worked in business areas like Product Development and Research and Development.

Sergej holds a Doctorate from Institute of Atomic Machines, Russian Academy of Sciences.

Sergej has 1 certificate: Microsoft Certified Professional.

Sergej is immediately available part-time for suitable projects.

Daily Rate Distribution

0 2 4 6 8

<€640 €640-800 €800-960 €1120-1280 €1440+

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.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1000

750

500

250

Daily rate avg. 933 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000

750

500

250

Median rate 860 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.