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Salwa Salam Cynthia
Berlin, Germany
A React.js enthusiast, JavaScript connoisseur who is constantly learning and spreading the acquired knowledge. A mother, a dreamer, an optimist.
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176.1
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CoffeeScript
Developer
Germany
Highest experience points: 0 points,
0 activities in the last year
JavaScript
64.8
exp.
JSON
33.6
exp.
CSS
26.2
exp.
HTML
22.3
exp.
SCSS
7.2
exp.
Python
3.8
exp.
C++
3.8
exp.
TypeScript
3.8
exp.
List your work history, including any contracts or internships
YouTube
Jul 2020 - Aug 2020 (1 month)
Content Developer
I create YouTube Tutorials on JavaScript and MERN Stack for my Channel named 'Kangaroo Coder'. I focus on looking at a problem in small understandable parts, pseudocode, and then writing code. I do live sessions on the same topic from my FaceBook page, also named as 'Kangaroo Coder'
#ONO (Open to New Opportunities)
Apr 2020 - Aug 2020 (4 months)
Full Stack Web Developer
* Developing a single page e-commerce app using React, Nodejs, MongoDB, HTML, CSS bootstrap.
* Designed a responsive prototype for three device sizes using Figma
* Added Paypal payment method to the app using Paypal API
* Designed a responsive prototype for three device sizes using Figma
* Added Paypal payment method to the app using Paypal API
Freelance
Jan 2017 - Apr 2019 (2 years 3 months)
Physics and Mathematics influencer
• Supervised four (4) University students in advanced Mathematics and Physics
Add some compelling projects here to demonstrate your experience
Master Thesis in nanotechnology, Thesis topic: Fabrication of TiO2/SiO2 Distributed Bragg Reflectors by Sputtering for GaAs based VCSELs
Jan 2014 - Jun 2014
Surface emitting lasers e.g. VCSELs are popular for communication because they provide high modulation speed at lower threshold currents. Moreover the beam is circularly symmetric and thus it can be coupled with fibers very efficiently. One of the key components in a VCSEL is the Distributed Bragg Reflector (DBR) which is formed by alternating layers of high and low refractive index material. In this project a dielectric DBR is introduced as the top DBR since it gives shorter cavity length and lower absorption than the conventional epitaxially grown DBR. The dielectric DBR has to be highly reflective (>99%) and that is accomplished by having high refractive index contrast between the layers, low absorption, low stress in the layers and abrupt interfaces. In this thesis, TiO2 has been used as the high refractive index material (n =2.38 at 980nm) and SiO2 has been used as the low refractive index material (n =1.42 at 980nm).
Layers of TiO2 and SiO2 were deposited using reactive reactive magnetron sputtering. Refractive index and extinction coefficient were measured using an Ellipsometer and stress in the film was calculated by measuring the bow of the wafer with a surface profiler. Thickness of the layers of the DBR were measured using both Ellipsometer and Scanning Electron Microscope. After a number of iterations of deposition and parameter measurements for having a reproducible recipe the fabrication parameters were obtained. The reflectivity spectrum of the DBR was measured using a Photospectrometer and compared with the simulated spectrum. Simulation was done using transfer matrix method in matlab. Two DBRs were deposited with the same process parameters and the same number of layers. DBR1 had a reflectivity of 99.25% and FWHM bandwidth of 329nm. DBR2 had 99.59% reflectivity with a FWHM bandwidth of 315nm. This demonstrates the reproducibility in the results and show good promise to integrate the DBR as a top mirror in VCSELs emitting at 980 nm.
Layers of TiO2 and SiO2 were deposited using reactive reactive magnetron sputtering. Refractive index and extinction coefficient were measured using an Ellipsometer and stress in the film was calculated by measuring the bow of the wafer with a surface profiler. Thickness of the layers of the DBR were measured using both Ellipsometer and Scanning Electron Microscope. After a number of iterations of deposition and parameter measurements for having a reproducible recipe the fabrication parameters were obtained. The reflectivity spectrum of the DBR was measured using a Photospectrometer and compared with the simulated spectrum. Simulation was done using transfer matrix method in matlab. Two DBRs were deposited with the same process parameters and the same number of layers. DBR1 had a reflectivity of 99.25% and FWHM bandwidth of 329nm. DBR2 had 99.59% reflectivity with a FWHM bandwidth of 315nm. This demonstrates the reproducibility in the results and show good promise to integrate the DBR as a top mirror in VCSELs emitting at 980 nm.
This section lets you add any degrees or diplomas you have earned.
Chalmers University of Technology
Master of Science (MSc), Wireless, Photonics and Space Engineering
Dec 2011 - Dec 2013
Along with the theoretical courses on photonics and optics, I gained extensive laboratory experiences related to:
- Optoelectronic component design and characterization
- VCSELs (Vertical Cavity Surface Emitting Lasers)
- Optical Simulation with MATLAB
- Spectroscopy
- Fabrication Techniques:
- Photolithography, Sputtering
- Electrical and Optical Characterization of Optoelectronic Devices:
- Techniques: Ellipsometry, SEM (Scanning Electron Microscope), Photospectrometer
- Optoelectronic component design and characterization
- VCSELs (Vertical Cavity Surface Emitting Lasers)
- Optical Simulation with MATLAB
- Spectroscopy
- Fabrication Techniques:
- Photolithography, Sputtering
- Electrical and Optical Characterization of Optoelectronic Devices:
- Techniques: Ellipsometry, SEM (Scanning Electron Microscope), Photospectrometer
Ironhack
Professional Training, Full Stack Web Development
Dec 2018 - Dec 2018
• Building full stack web application from end to end using JavaScript
• Functioning with MVC (Model-View-Controller) and Object Oriented Principles
• Creating application with Test Driven Development (TDD)
• Integrating 3rd party services using APIs
• Constructing single page application using MERN Stack
• Algorithms with JavaScript
• JavaScript library - React & jQuery
• Web applications using the Express.js framework
• Non-relational databases (MongoDB) & ORMs
• Application deployment following best practices
• Functioning with MVC (Model-View-Controller) and Object Oriented Principles
• Creating application with Test Driven Development (TDD)
• Integrating 3rd party services using APIs
• Constructing single page application using MERN Stack
• Algorithms with JavaScript
• JavaScript library - React & jQuery
• Web applications using the Express.js framework
• Non-relational databases (MongoDB) & ORMs
• Application deployment following best practices
BRAC University
Bachelor of Science (BSc), Electrical and Electronics Engineering
Dec 2005 - Dec 2009
HTML/CSS, JavaScript, and React