en
Backend Developer
Leogistics / Leoquantum
(Transport und Logistik, 250-500 Mitarbeiter)
Schlagwörter
Skills
I'm a freelancer software engineer with over 10 years of commercial experience. I have worked in more than a dozen of projects from small startups up to software giants such as SAP with 100.000 employees. I design and develop applications that scale well. I leave a mark in every project where I work on always pushing for good practices and improving processes to make the life of developers easier and to boost productivity.
I'm not a fan boy of any language or framework. I search for the right tool for the right job.
Let's talk:
* If you want to scale your development department at your company.
* If you have an intersting project.
* if you are developer and you want to learn new things and work in some awesome projects.
Keywords for the search engines:
* Programming on Ruby, JavaScript, TypeScript, PHP, Java, C, Golang.
* Programming mobile applications on ActionScript 3.0.
* Developing Web applications using Spring Boot, Ruby on Rails, NodeJS, ExpressJS, Gastby, Next.js, NestJS, AngularJS, Angular 4+, ReactJS, Vue.js, Apollo Server, GraphQL.
* Deploying applications using Heroku, IBM Bluemix and AWS.
* Hybrid applications NoSQL/SQL
* MongoDB
* Elasticsearch,
* AWS : S3, CloudFront, EC2, Route53, OpsWorks, ELB, CloudWatch, Elastic Cache, Lambda, RDS, SQS, SNS, EKS
* Azure: Azure pipelines, azure artifacts.
* Algolia search engine,
* APIs: Twitter, Instagram, Google (YouTube Data v3, YouTube Analytics API), Twtrland and Gnip.
* Distributed revision control with GIT.
* Microcontrollers programming.
* Linux, bash, POSIX.
* TDD
* Docker / Kubernetes
* Hardware description in VHDL
I'm not a fan boy of any language or framework. I search for the right tool for the right job.
Let's talk:
* If you want to scale your development department at your company.
* If you have an intersting project.
* if you are developer and you want to learn new things and work in some awesome projects.
Keywords for the search engines:
* Programming on Ruby, JavaScript, TypeScript, PHP, Java, C, Golang.
* Programming mobile applications on ActionScript 3.0.
* Developing Web applications using Spring Boot, Ruby on Rails, NodeJS, ExpressJS, Gastby, Next.js, NestJS, AngularJS, Angular 4+, ReactJS, Vue.js, Apollo Server, GraphQL.
* Deploying applications using Heroku, IBM Bluemix and AWS.
* Hybrid applications NoSQL/SQL
* MongoDB
* Elasticsearch,
* AWS : S3, CloudFront, EC2, Route53, OpsWorks, ELB, CloudWatch, Elastic Cache, Lambda, RDS, SQS, SNS, EKS
* Azure: Azure pipelines, azure artifacts.
* Algolia search engine,
* APIs: Twitter, Instagram, Google (YouTube Data v3, YouTube Analytics API), Twtrland and Gnip.
* Distributed revision control with GIT.
* Microcontrollers programming.
* Linux, bash, POSIX.
* TDD
* Docker / Kubernetes
* Hardware description in VHDL
Projekthistorie
03/2022
-
12/2022
- Implementation of new microservices services in NodeJS using NestJS
and TypeScript.
- Communicating microservices using NATs and DARP.
- Upgrade of several microservices to latest NodeJS versions and
libraries.
- Migration from TypeORM to Mongoose in different microservices.’
and TypeScript.
- Communicating microservices using NATs and DARP.
- Upgrade of several microservices to latest NodeJS versions and
libraries.
- Migration from TypeORM to Mongoose in different microservices.’
09/2021
-
03/2022
Senior Full Stack Developer
hy.am studios GmbH
(Internet und Informationstechnologie, 50-250 Mitarbeiter)
I was working on developing an website for a cinema company. Final
result: (https://www.yorck.de).
- Implementation of auth microservice to unify authtentication of different
third party services using Cognito from AWS.
- Configuration of pipelines in vercel and serverless.
- Implementation of several microservices using lambda functions
(serverless architecture).
- Implementation of new frontend features for a Next.js application using
TypeScript, Contentful, redux and redux sagas.
- Implementation of search functionality using Algolia.
result: (https://www.yorck.de).
- Implementation of auth microservice to unify authtentication of different
third party services using Cognito from AWS.
- Configuration of pipelines in vercel and serverless.
- Implementation of several microservices using lambda functions
(serverless architecture).
- Implementation of new frontend features for a Next.js application using
TypeScript, Contentful, redux and redux sagas.
- Implementation of search functionality using Algolia.
09/2020
-
09/2021
Senior Backend Developer
Evana AG
(Internet und Informationstechnologie, 50-250 Mitarbeiter)
- Working language: German
- Implementation of local docker cluster to run microservices.
- Implementation of CLI tool using bash (POSIX) to install, run, and
manage microservices.
- Implementation of Nodejs REST API from scratch using TypeScript and
Express.
- Implementation of new features for the company’s GraphQL API.
- Usage of several programming patterns such as Decorators, Builders,
Adapters, Factories, among, others.
- Unit tests and Integration tests using Jest.
- Wrote API documentation using OpenAPI
- Creation of isomorphic npm packages to call API endpoints easily by
web apps and microservices.
- Configuration of CI/CD pipelines on Azure.
- Implementation different microservices in Golang from scratch.
- Implementation of local docker cluster to run microservices.
- Implementation of CLI tool using bash (POSIX) to install, run, and
manage microservices.
- Implementation of Nodejs REST API from scratch using TypeScript and
Express.
- Implementation of new features for the company’s GraphQL API.
- Usage of several programming patterns such as Decorators, Builders,
Adapters, Factories, among, others.
- Unit tests and Integration tests using Jest.
- Wrote API documentation using OpenAPI
- Creation of isomorphic npm packages to call API endpoints easily by
web apps and microservices.
- Configuration of CI/CD pipelines on Azure.
- Implementation different microservices in Golang from scratch.
06/2020
-
09/2020
Senior Frontend Developer
Allthings GmbH
(Architektur und Bauwesen, 10-50 Mitarbeiter)
- Implementation of interactive tutorial for company’s dashboard.
- Implementation of new features using React, Redux, React Hooks, css-
in-js and Vue.js
- Idea conception and implementation of new UI components and user
flows to improve UX.
- Implementation of a marketplace using Next.js to sell and expose client’s
digital products. (https://marketplace.allthings.me/)
- Implementation of new backend features in PHP using Symphony.
- Implementation of new lambda functions to build backend products using
Node.js
- Using ISR (Incremental static regeneration) to improve SEO and website
load times.
- Idea conception and implementation of new UI components and user
flows to improve UX.
- Implementation of new features using React, Redux, React Hooks, css-
in-js and Vue.js
- Idea conception and implementation of new UI components and user
flows to improve UX.
- Implementation of a marketplace using Next.js to sell and expose client’s
digital products. (https://marketplace.allthings.me/)
- Implementation of new backend features in PHP using Symphony.
- Implementation of new lambda functions to build backend products using
Node.js
- Using ISR (Incremental static regeneration) to improve SEO and website
load times.
- Idea conception and implementation of new UI components and user
flows to improve UX.
10/2019
-
05/2020
Frontend Developer,
Minol Messtechnik W. Lehmann GmbH & Co. KG.
(Energie, Wasser und Umwelt, 1000-5000 Mitarbeiter)
- Development from scratch of a new interactive tool to handle the
company’s internal data using React, Material UI, Hooks, Webpack,
TypeScript.
- Implementation of proxy server on Node.js
- Creation of new UI components and improvements in the UX.
company’s internal data using React, Material UI, Hooks, Webpack,
TypeScript.
- Implementation of proxy server on Node.js
- Creation of new UI components and improvements in the UX.
11/2019
-
04/2020
Full Stack Developer
Evia
(Internet und Informationstechnologie, 500-1000 Mitarbeiter)
* Implementation and design from scratch of a react application for an automobile industry client using ReactJS, React Hooks, TypeScript, Docker, css-in-js, etc...
* Implementation of microservices using Spring Boot, JPA, Spring Batch, Terraform, Azure, Docker, K8s, Helm, among other technologies.
* Configuration of build pipelines and release pipelines in Azure.
* Implementation of websocket using Stomp protocol between Spring Boot app and ReactJS app for real time updates.
* Development of batch scripts and configuration of local cluster using docker-compose for local development.
* Implementation of microservices using Spring Boot, JPA, Spring Batch, Terraform, Azure, Docker, K8s, Helm, among other technologies.
* Configuration of build pipelines and release pipelines in Azure.
* Implementation of websocket using Stomp protocol between Spring Boot app and ReactJS app for real time updates.
* Development of batch scripts and configuration of local cluster using docker-compose for local development.
02/2019
-
10/2019
Full Stack Developer
Allthings GmbH
(Sonstiges, 10-50 Mitarbeiter)
- Development of new frontend features using React, Redux, CSS-in-JS, Webpack, Atomic design.
- Wrote e2e tests on Nightwatchjs.
- Implementation of CI/CD pipelines on builtkite.
- Wrote backend services on PHP with Symfony and MongoDB, Doctrine.
- Wrote e2e tests on Nightwatchjs.
- Implementation of CI/CD pipelines on builtkite.
- Wrote backend services on PHP with Symfony and MongoDB, Doctrine.
10/2018
-
12/2018
Full Stack Developer
IT-Designers Gruppe
(Internet und Informationstechnologie, 500-1000 Mitarbeiter)
* Implementation of new features for an automobile industry related application (Daimler) using Angular 6, Node.js, TypeScript, Docker, Redux, RxJS, Less.
* I had to communicate and work in German only.
* I had to communicate and work in German only.
11/2017
-
10/2018
Full Stack Developer
Evia - Stuttgart
(Internet und Informationstechnologie, 500-1000 Mitarbeiter)
Development of features for an Wüstenrot & Württembergische´s app. The app allows users to purchase different kind of insurances.
* Development on Angular 4/5/6, hapi.js, Node.js
* Typescript / ES5 & ES6
* Configuration of CI/CD pipe lines on Circle CI
* Creation of docker images and deployment of dockerized apps using kubernetes.
* Sass
* DevOps
* Development on Angular 4/5/6, hapi.js, Node.js
* Typescript / ES5 & ES6
* Configuration of CI/CD pipe lines on Circle CI
* Creation of docker images and deployment of dockerized apps using kubernetes.
* Sass
* DevOps
08/2017
-
11/2017
Full Stack Developer
SAP - Waldorf
(Internet und Informationstechnologie, >10.000 Mitarbeiter)
* Implementation of authentication gateway from scratch to use SAP services by third party services.
* Development of dashboard using Angular 4 and Node.js to manage, scopes, permissions, apps, etc..
* Typescript
* Configuration of the infrastructure required by the project on OpenStack using Terraform.
* Implementation of OAuth2 server.
* CI & CD for production and staging enviroments on Travis.
* Usage of SAML2 and SSL certificates.
* Development of dashboard using Angular 4 and Node.js to manage, scopes, permissions, apps, etc..
* Typescript
* Configuration of the infrastructure required by the project on OpenStack using Terraform.
* Implementation of OAuth2 server.
* CI & CD for production and staging enviroments on Travis.
* Usage of SAML2 and SSL certificates.
09/2016
-
08/2017
Backend Developer / DevOps
World Food Programm - Berlin
(Sonstiges, >10.000 Mitarbeiter)
ShareTheMeal is the fundraising app of the United Nations World Food Program which enables smartphone users worldwide to help children in need. To date, more than 1'200,000 users have shared over 64 million meals with starving children. ShareTheMeal has received several awards, including the Google Play Award as the best social impact app.
* Full Stack Development and especially further development of node.js-based APis for the ShareTheMeal mobile apps.
* Software architecture, planning and migration of database systems.
* Implementation of integration and unit tests as part of the TDD.
* Backend DevOps of the AWS-running servers and network infrastructure Integration with third party services such as CMS and Payment providers.
* Close collaboration with mobile app developers.
* Full Stack Development and especially further development of node.js-based APis for the ShareTheMeal mobile apps.
* Software architecture, planning and migration of database systems.
* Implementation of integration and unit tests as part of the TDD.
* Backend DevOps of the AWS-running servers and network infrastructure Integration with third party services such as CMS and Payment providers.
* Close collaboration with mobile app developers.
12/2015
-
09/2016
Full Stack Developer
Element Five Solutions, Inc.
(Internet und Informationstechnologie, 10-50 Mitarbeiter)
* Leading the development of some products at the company.
* Contact point between the development team in India and USA
* Product development from scratch using MEAN stack, ES6, gulp, grunt, Jade, AWS, etc...
* Contact point between the development team in India and USA
* Product development from scratch using MEAN stack, ES6, gulp, grunt, Jade, AWS, etc...
04/2015
-
08/2016
Co-founder Senior Backend Developer
Mercadoni
I had the responsibility to develop the API from scratch for the company along with the deployment of the application on AWS. I was present in all development lifecycle of the product and organised all the workflow of the company. After 6 months, the company needed to expand the software development team so I interviewed and recruited people for this propose. This company received $2 million USD from a venture capital fund and I feel very proud that my work played a key role to achieve this.
* API Developing from scratch for the company on Node.js using Express.js as MVC framework and MongoDB for the database. This API is used by an AngularJS, iOS and Android app.
* TDD.
* Redis for cache and session storage.
* Deploying on Bluemix (IBM cloud services).
* Configuring AWS services (EC2, CloudFront, S3, Route53, Load Balancers, Auto-Scaling).
* Configuring prerender server in order to improve SEO on JavaScript Apps (AngularJS).
* Configuring Jenkins as a CI server to run mocha tests for every PR.
* Implementation of Algolia as search engine.
* Implementation of Braintree and Stripe for online payments.
* Implementation of Geo-location algorithms.
* Implementation of socket.io for real-time processes and notifications.
* Google Maps Matrix Distance API.
* Organization of the development workflow using JIRA.
* API Developing from scratch for the company on Node.js using Express.js as MVC framework and MongoDB for the database. This API is used by an AngularJS, iOS and Android app.
* TDD.
* Redis for cache and session storage.
* Deploying on Bluemix (IBM cloud services).
* Configuring AWS services (EC2, CloudFront, S3, Route53, Load Balancers, Auto-Scaling).
* Configuring prerender server in order to improve SEO on JavaScript Apps (AngularJS).
* Configuring Jenkins as a CI server to run mocha tests for every PR.
* Implementation of Algolia as search engine.
* Implementation of Braintree and Stripe for online payments.
* Implementation of Geo-location algorithms.
* Implementation of socket.io for real-time processes and notifications.
* Google Maps Matrix Distance API.
* Organization of the development workflow using JIRA.
01/2015
-
06/2015
Full Stack Developer
FLUVIP
(Marketing, PR und Design, 10-50 Mitarbeiter)
* Development of the company's platform on Ruby on Rails.
* Implementation of hybrid model between MongoDB and MySQL in order to improve performance on the platform.
* Using APIs from Twitter, Instagram, Google (YouTube Data v3, YouTube Analytics API), Twtrland and Gnip.
* Implementation of hybrid model between MongoDB and MySQL in order to improve performance on the platform.
* Using APIs from Twitter, Instagram, Google (YouTube Data v3, YouTube Analytics API), Twtrland and Gnip.
09/2014
-
01/2015
Full Stack Developer
Pidefarma
(Transport und Logistik, 10-50 Mitarbeiter)
* Web application development using MVC.
* PHP.
* CakePHP.
* Design of the second version of the web platform on Ruby.
* PHP.
* CakePHP.
* Design of the second version of the web platform on Ruby.
02/2014
-
09/2014
Networkig Technician
Universidad Distrital Francisco Jose de Caldas
(Sonstiges, 500-1000 Mitarbeiter)
Management of Linux servers (Debian Wheezy) and AWS instances.
• Knowledge and experience on configuration of, SSH, Web service
(Apache), Live Streaming (Red5 y VLC), SFTP, FTP, SMTP.
• Developing scripts on Bash and Python.
• Knowledge and experience on configuration of, SSH, Web service
(Apache), Live Streaming (Red5 y VLC), SFTP, FTP, SMTP.
• Developing scripts on Bash and Python.
01/2014
-
09/2014
Software Developer
Toro-Labs
(Internet und Informationstechnologie, < 10 Mitarbeiter)
Mobile and web application developer.
• Developing simulators of chemistry,biology and physics for different platforms (Web,Android and iOS)
• Idea conception and execution. Designing website wireframe.
• Programming mobile applications on ActionScript 3.0
• Programming on JavaScript, HTML5 and CSS3.
• Deploying applications using Heroku.
• Developing simulators of chemistry,biology and physics for different platforms (Web,Android and iOS)
• Idea conception and execution. Designing website wireframe.
• Programming mobile applications on ActionScript 3.0
• Programming on JavaScript, HTML5 and CSS3.
• Deploying applications using Heroku.
Reisebereitschaft
Nur Remote verfügbar
Ich suche nach Projekten, wo ich und mein Team remote arbeiten können.
Sonstige Angaben
I founded a software development company and I'm looking for projects for me and my team so if you are interesting in hiring my services or the services of my team let me know.
We have also a exali-Haftpflichtversicherung
https://www.exali.de/siegel/Tuix-GmbH
We have also a exali-Haftpflichtversicherung
https://www.exali.de/siegel/Tuix-GmbH
exali IT-Haftpflicht-Siegel (Sondertarif für Freelancermap-Mitglieder)
Das original exali IT-Haftpflicht-Siegel bestätigt dem Auftraggeber, dass die betreffende Person oder Firma eine aktuell gültige branchenspezifische Berufs- bzw. Betriebshaftpflichtversicherung abgeschlossen hat. Diese Versicherung wurde zum Sondertarif für Freelancermap-Mitglieder abgeschlossen.
Versicherungsbeginn:
23.06.2022
Versicherungsende:
01.07.2024
