Christoph is available for hire
Hire ChristophChristoph Salat
Verified Expert in Engineering
Software Developer
Location
Vienna, Austria
Toptal Member Since
September 30, 2019
Chris is a seasoned software developer with over a decade of experience in the field. Equipped with a diverse range of skills and knowledge across various technologies and programming languages, he possesses a comprehensive understanding of all aspects of full-stack development. With a keen intuition and drive to comprehend the larger context of problems, Chris consistently devises inventive and well-considered solutions to complex challenges.
Portfolio
Various Platforms
Amazon Web Services (AWS), Node.js, Vue, CSS, Web Development, HTML5...
Peyton & Greyson Solutions Inc.
REST, REST APIs, APIs, JavaScript, HTML, CSS, SQL, Amazon Web Services (AWS)...
Share My Telly Job CIC
Nuxt.js, Vue, JavaScript, Node.js, PostgreSQL, Amazon Web Services (AWS)...
Experience
Availability
Part-time
Preferred Environment
Git, MacOS, Linux, Windows, Amazon Web Services (AWS), Agile Software Development, APIs, IntelliJ, AWS Cloud Architecture
The most amazing...
...platform I've built enables online sponsorship of children and seniors with easy access to their profiles and automatic updates, replacing a manual process.
Work Experience
Freelancer
2017 - PRESENT
Various Platforms
- Developed an application that manages subscriptions and monthly payments.
- Developed an event management web application where the client can manage his events and all of the guests.
- Created a custom CMS with Vue.js and AWS Lambda for a client with special needs in functionality.
- Transferred an existing in-house system to the AWS Cloud by utilizing specialized AWS solutions to increase performance and reduce cost.
- Designed and developed an application through which users are able to generate questionnaires.
- Developed a children sponsorships platform coupled with a management system.
Technologies: Amazon Web Services (AWS), Node.js, Vue, CSS, Web Development, HTML5, Amazon API Gateway, WordPress, Amazon CloudFront CDN, AWS Lambda, Amazon S3 (AWS S3), Amazon DynamoDB, Redux, React Native, React, Linux, Git, Web App Deployment, Vuetify, AWS Amplify, Cloudflare, Webpack, MacOS, TypeScript, Serverless, AWS SDK, Full-stack, Web App Development, Front-end, Heroku, Agile, WooCommerce, Shopify, Shopware, MongoDB, GraphQL, REST APIs, Back-end, MUI (Material UI), Nuxt.js, Next.js, HTML, AWS AppSync, Vuex, PostgreSQL, UI Design, Prototyping, Databases, REST, JavaScript, Relational Databases, Docker, Amazon CloudWatch, Angular, Electron, APIs, Code Review, Source Code Review, Task Analysis, Team Management, IntelliJ, Tailwind CSS, Figma, MUI CSS, AWS Cloud Architecture, Microservices, Server-side Rendering (SSR), Search Engine Optimization (SEO), eCommerce, DevOps, Technical Leadership, Technical Project Management, Project Management, CI/CD Pipelines, Kubernetes, DigitalOcean, AWS Elastic Beanstalk, Express.js, Amazon Simple Email Service (SES), Lambda Functions, Unit Testing, Continuous Integration (CI), Storybook
Full-stack Developer
2023 - 2023
Peyton & Greyson Solutions Inc.
- Extended the existing front-end of the application and added necessary back-end functionality to meet project requirements, resulting in improved user experience and increased customer satisfaction.
- Managed and coached another front-end developer, providing valuable feedback and guidance on how to use certain parts of the application and ensuring the overall quality of the code.
- Played a key role in integrating Stripe payments into the application and implementing monitoring functionality, resulting in improved payment processing and increased application performance.
- Provided valuable input on AWS-specific functionalities, contributing to the project's overall success.
Technologies: REST, REST APIs, APIs, JavaScript, HTML, CSS, SQL, Amazon Web Services (AWS), User Experience (UX)
Nuxt.js and Node.js Developer
2022 - 2022
Share My Telly Job CIC
- Transferred a Nuxt.js application to AWS, resulting in increased performance, reduced hosting costs, and more control.
- Implemented advanced security measures, including data encryption, to protect the client's sensitive information.
- Provided technical consultation to the client and attended meetings to ensure a seamless transition to the new hosting environment.
Technologies: Nuxt.js, Vue, JavaScript, Node.js, PostgreSQL, Amazon Web Services (AWS), Amazon EC2
Full-stack Developer
2021 - 2021
Artistic Fuel
- Revamped an outdated React Native application by updating it to the latest versions and introducing new features, resulting in a more modern and user-friendly experience.
- Designed user interfaces for a React Native application using wireframes, ensuring a well-organized and intuitive user experience.
- Developed a customized chat feature using WebSockets for an application, providing users with a seamless and efficient communication channel.
Technologies: Node.js, Amazon Web Services (AWS), React Native, Amazon CloudWatch, APIs, IntelliJ, Continuous Integration (CI)
Full-stack Developer
2020 - 2021
404 Publishing
- Developed speed improvements for calculations on a distributed network of Node.js instances, which communicate with each other and rely on each other's data.
- Configured and implemented an audio streaming service to stream a radio show on a Next.js page.
- Extended the functionality of the front end and increased stability and loading times.
Technologies: Next.js, React, MongoDB, JavaScript, PHP, APIs, IntelliJ, Continuous Integration (CI)
App Developer
2019 - 2020
Social News Desk, Inc.
- Ensured application security by updating library dependencies and adjusting source code.
- Improved application functionality by adding and extending features.
- Enhanced application quality by fixing bugs discovered through source code scanning and usage.
Technologies: React, React Native, APIs, IntelliJ, Continuous Integration (CI)
Teacher
2017 - 2017
BBRZ Wien
- Conducted classes for groups of approximately 20 individuals on subjects ranging from fundamental HTML to advanced engineering techniques and algorithms.
- Mentored student teams through their initial software engineering project by instructing them on processes like project planning, agile software development, and quality assurance.
- Developed a comprehensive curriculum of diverse subjects within software development.
Technologies: JavaScript, Java, Microsoft Access, Microsoft PowerPoint, CSS, Web Development, HTML5, Front-end, Back-end, HTML, Teaching, Code Review, Source Code Review, Interviewing, Technical Hiring
Software Engineer
2014 - 2016
Mymarket.io GmbH
- Built example websites on the eCommerce platform, showcasing its advanced technology to prospective clients.
- Used AWS to optimize the platform's back end, ensuring smooth and reliable operation.
- Conducted in-depth research and analysis on abroad manufacturers and vendors, establishing valuable relationships and gaining insight into important details.
- Assisted with the development of the platform's back end, leveraging technical expertise to optimize performance and ensure the system's smooth operation.
Technologies: Amazon Web Services (AWS), Node.js, MySQL, AngularJS, PHP, CSS, Web Development, Agile Software Development, SQL, Scrum, AWS Lambda, Amazon S3 (AWS S3), Linux, Git, Web App Deployment, Webpack, TypeScript, Serverless, Full-stack, Web App Development, Front-end, Agile, REST APIs, Back-end, HTML, Databases, REST, JavaScript, Relational Databases, Code Review, Source Code Review, IntelliJ, AWS Cloud Architecture, Search Engine Optimization (SEO), eCommerce, CI/CD Pipelines, Unit Testing, Continuous Integration (CI)
Software Engineer and Team Lead Assistant
2012 - 2014
Pool4Tool
- Contributed to developing an e-procurement platform tailored for the car industry, collaborating with team members to create an efficient solution that streamlined procurement processes.
- Worked closely on improving the performance of complex calculations, leveraging technical expertise to identify and resolve system bottlenecks, resulting in faster and more responsive system performance.
- Estimated project features and provided valuable support in project planning, helping to optimize development processes and ensure the project was completed successfully.
- Assisted with time planning and scheduling, managing a team of four individuals to ensure the project was delivered on time and to a high standard.
Technologies: Git, MySQL, PHP, CSS, Web Development, Agile Software Development, SQL, Scrum, Kanban, Full-stack, Front-end, Agile, REST APIs, Back-end, HTML, PostgreSQL, Databases, REST, JavaScript, Relational Databases, Code Review, Source Code Review, Interviewing, Technical Hiring, IntelliJ, Search Engine Optimization (SEO), eCommerce, Technical Leadership, CI/CD Pipelines, Unit Testing, Continuous Integration (CI)
Experience
Animal Adoption Application
This animal shelter offers a program that allows people to sponsor animals (paying a fixed monthly amount). In return, they receive regular updates via mail or email. Since this process is very obscure, I developed an app where users can choose their animals and sponsor them directly through the app. The app lets the sponsor view updates and news about their chosen animal.
The app was written as a PWA with Vue and AWS Amplify.
The app was written as a PWA with Vue and AWS Amplify.
EventManager
I developed this web application for a customer who regularly hosts events. He can organize guests and events and send out invitations through the app. Guests can use the app to either accept or decline invitations.
Warehouse Management System
I developed a warehouse management system for pharmacies with a colleague. The system's aim was for pharmacies to have an overview of what kind of medications and ingredients (for pharmaceuticals) they are running out of so that they can order them with one click.
We have used Laravel with MySQL in the back end and j|Query in the front end. The application was hosted with DigitalOcean.
We have used Laravel with MySQL in the back end and j|Query in the front end. The application was hosted with DigitalOcean.
GIS Analysis Software
https://smartmap.at/I developed a production site analysis software for doctors. After choosing a location, a doctor can see how many people live in the vicinity and other details about them. The front end is built with Vue.js, and the back end with Node.js is hosted on an EC2 instance. For the database, I used RDS with PostgreSQL.
Questionnaire Management System
An application where users are able to create and manage different questionnaires. Through the management system, they can see results and various key figures. I was managing a team that was designing and building the application. My responsibilities ranged from planning to developing the application.
Children Sponsorship
An NGO required an application where they can connect donors with children in need. Through this application, people are able to sponsor children. Upon sponsorship, they can see various updates from these children and they are able to communicate with them.
I managed a small team that was responsible for building the application. My responsibilities ranged from managing the team, planning, communicating with the customer, and developing parts of the platform.
I managed a small team that was responsible for building the application. My responsibilities ranged from managing the team, planning, communicating with the customer, and developing parts of the platform.
Skills
Languages
HTML, HTML5, CSS, PHP, JavaScript, SQL, TypeScript, GraphQL, Java
Frameworks
Vuetify, Next.js, Nuxt.js, React Native, Laravel, MUI (Material UI), Angular, MUI CSS, Express.js, AngularJS, Redux, Electron, Tailwind CSS
Libraries/APIs
Vuex, Node.js, Vue, AWS Amplify, React, REST APIs
Tools
Amazon CloudFront CDN, Git, IntelliJ, Webpack, AWS SDK, AWS AppSync, Amazon CloudWatch, Amazon Simple Email Service (SES), Microsoft PowerPoint, Microsoft Access, Adobe Photoshop, Figma, AWS Systems Manager, AWS IAM, AWS CloudFormation, AWS OpsWorks, Amazon Elastic Container Service (Amazon ECS), Amazon Elastic Container Registry (ECR), Amazon Virtual Private Cloud (VPC)
Paradigms
Agile Software Development, Kanban, Agile, REST, Scrum, UI Design, Microservices, Search Engine Optimization (SEO), DevOps, Continuous Integration (CI), Management, Unit Testing
Platforms
WordPress, AWS Lambda, Windows, Amazon Web Services (AWS), MacOS, Linux, Heroku, WooCommerce, Shopify, iOS, Docker, Kubernetes, DigitalOcean, AWS Elastic Beanstalk, Amazon EC2
Storage
Amazon S3 (AWS S3), Databases, Relational Databases, MySQL, PostgreSQL, Amazon DynamoDB, NoSQL, MongoDB
Other
Web Development, Amazon API Gateway, Web App Deployment, Full-stack, Web App Development, Front-end, Back-end, APIs, Code Review, Source Code Review, Task Analysis, AWS Certified Developer, AWS Cloud Architecture, Cloudflare, Serverless, Prototyping, Interviewing, Technical Hiring, Team Management, Technical Leadership, CI/CD Pipelines, Lambda Functions, Business, B2C Marketing, Sales, Finance, Networks, Shopware, IT Project Management, Server-side Rendering (SSR), eCommerce, Technical Project Management, Storybook, User Experience (UX), AWS CodePipeline
Industry Expertise
Project Management, Teaching
Certifications
SEPTEMBER 2023 - SEPTEMBER 2026
AWS Certified SysOps Administrator – Associate
Amazon Web Services
SEPTEMBER 2021 - SEPTEMBER 2024
AWS Certified Cloud Practitioner
Amazon Web Services
JUNE 2010 - PRESENT
European Business and Competence Licence Stufe A+B
Kuratorium Wirtschaftskompetenz für Europa e. V.
NOVEMBER 2009 - PRESENT
Cisco Certified Network Associate Exploration
Cisco