Freelancer profile translated to English.
Back to original languageAbout Elmar
I have been working as a software developer for over 30 years, bringing extensive experience in developing complex software solutions. With a degree in Physics and a PhD in Applied Mathematics, I possess strong analytical skills and particularly enjoy working on projects with a mathematical or scientific-technical background.
Throughout my career, I have developed in numerous programming languages, including C++, Java, Python, MATLAB, JavaScript, PHP, and Ruby. Additionally, I have extensive experience in implementing web projects – from classic content management systems like WordPress to modern single-page applications with React.
Furthermore, I am well-versed in Continuous Integration and Deployment pipelines (CI/CD). I have in-depth knowledge of build systems like Make and CMake, as well as version control with Git and other systems. My broad technical expertise and interdisciplinary background enable me to approach complex software projects efficiently, in a structured, and sustainable manner.
German
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Toptal.comFreelance software developer and math consultantJanuary 2018 - Today (8 years and 5 months)• Implementation of stochastic consumer choice models with MCMC- and variational Bayes methods (Matlab)• Design and implementation of geometrical algorithms for energy flow simulations of industrial buildings (Ruby)• Development of a 3D video conferencing system (video wall) with Javascript and React running on headless Chrome and Google cloud database• Mathematical modelling, design and implementation of various statistical algorithms (multi-hypothesis testing), optimization algorithms and deconvolution algorithms in the field of proteomics (C++ 17, Python, R).
- Institute of Scientific Computing, TU BraunschweigResearch AssociateRESEARCHJanuary 2003 - January 2018 (15 years)Braunschweig, Germany• Simulation of atmospheric plasmas• Development of numerical methods for uncertainty quantification (UQ)• Development of low-rank methods for the solution of stochastic differential equations
- XCOM AGSoftware DeveloperBANKING AND INSURANCEJanuary 1999 - January 2003 (4 years)Willich, Germany• Object-oriented development in C++ and Java• Development of Client-Server solutions for stock trading• Database applications for stock and derivatives information systems
Reviews
Josef
SEO - Medienwerkstatt-niederrhein
Several weeks project
-
Reviewed on 12/9/2025
Elmar Zander did a very good job. The best Data Analyst I have had the pleasure of working with so far. He is a professional with a lot of experience that he uses wisely.
Recommendations
Be the first to recommend Elmar
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- PhD in Applied MathematicsTechnische Universität Braunschweig2012Dissertation "Tensor Approximation Methods for Stochastic Problems"
- Diploma in PhysicsUniversität Münster1998Diplomarbeit "Nichtlineare Zeitreihenanalyse und ihre Anwendung auf die Atmungsdynamik Frühgeborener"