Romain Ensminger

4.9

(211 reviews)

US$20.00

For every 15 mins

342

Sessions/Jobs

First 15 mins free for your first session

ABOUT ME

Javascript FullStack and mobile (Node, Angular, Ionic) developer with 12+ years experience

Hello, I'm an agile Back and FrontEnd developer who worked on large scale projects. I can advise you the good technological and architectural choices early on so you save time.

I'm precise and can figure problems out quickly. I love to have a deep understanding of the tools I use. I also enjoy writing simple, clean, efficient, maintainable and re-usable code.

I wrote several AngularJS apps and designed REST API's. When I design a new service, I keep qualities like scalability, performance, responsiveness, user-experience, and SEO in mind.

I love to streamline workflows with tools like Grunt, Git and PM2 to deploy new releases several times a day, making use of best practices and setting up both Unit and End to End tests.

I also have skills in system administration, and can setup a server, different environments, databases, email servers, certificates and so on.

I used to work with Php, JQuery and MySQL.

French, German, English

Zurich (+02:00)

Joined August 2015

EXPERTISE

JavaScript

10 years experience | 37 endorsements

From building a browser game physics engine, to an Ionic mobile app, a nodejs webServer, or an angularJS single page app, JavaScript is a...

From building a browser game physics engine, to an Ionic mobile app, a nodejs webServer, or an angularJS single page app, JavaScript is a very powerfull language. Understanding the different coding style allowed by JavaScript are a key. I do functional, callbacks, objects or promise based JavaScript. Through my expertise, i will help you write clearer more concise code that is easy to understand, fast, and easy to debug.

Angular

8 years experience | 31 endorsements

I worked with angular 1.x and 2.x and 4.x. I built several complete AngularJS apps for desktop and 2 mobile apps ( with Ionic). And worke...

I worked with angular 1.x and 2.x and 4.x. I built several complete AngularJS apps for desktop and 2 mobile apps ( with Ionic). And worked on dozens of apps from different people. I use services and write modular code. I'm familiar with most of the concepts behind AngularJS (views, controller, bindings, dependency injection, scopes, transclusion, testing...) and can teach them to you. Often I use socket.io as a realtime engine in a service.

HTML/CSS

10 years experience | 20 endorsements

I can write clean and syntactically correct html and css. I focus on SEO and clarity. I also master less mixins and varialbes. I use Boot...

I can write clean and syntactically correct html and css. I focus on SEO and clarity. I also master less mixins and varialbes. I use Bootstrap to quickly put my ideas into shape. As a bonus if you ask me, I will show you some neat tricks if you use webstorm to write html faster with emmets 3*div#niceDiv>h1>p

TypeScript

4 years experience | 10 endorsements

I have basic knowledge in typescript. I used it to write Ionic 2/3 and angular 2.x and 4.x apps.

Ionic

4 years experience | 3 endorsements

Node.js

7 years experience | 26 endorsements

Protractor

3 years experience | 3 endorsements

REVIEWS FROM CLIENTS

4.9

(211 reviews)

Dorothy Taylor

October 2024

Romain's tutoring has been a lifesaver. I have been struggling with my programming class and he has been readily available to help. Not only has he guided me when errors have occurred but he provides additional information so I am learning as well. Thank you!

Dorothy Taylor

September 2024

Extremely helpful, professional and knowledgeable! I have been struggling with node.js, angular, reactive forms, html/css, typescript and JSON. Romain has been a huge help!

Dorothy Taylor

September 2024

Another knowledgeable and helpful session! Thank you!!

Dorothy Taylor

September 2024

I have been struggling in one of my college courses and knew I needed help. I was nervous to sign up for tutoring and was unsure on what to expect. I am so glad I found this site and Romain! He is very patient, extremely knowledgeable and professional! He helped me greatly! I wish I would have signed up for tutoring earlier. Thank you Romain!

Brandy Hinton

January 2024

Romain was very professional. He completed the project fast and is knows what he is doing. Highly recommend him.

Nick Berns

January 2024

Romain is friendly, experienced and very knowledgeable. He helped me solve my problem! :)

Matt Kirby

January 2024

Very knowledgeable. Great to work with and explains in detail everything he's doing. Very good at problem solving and finding different solutions. Will work with him every time I need help.

Mark James

December 2023

Very knowledgeable on docker, linux terminal code, dockerfile creation and execution, have a very critical problem solving skills on how to solve items that usually get the user stuck

Removed User

December 2023

The BEST! Really fast and expert. Looking forward to the next session. Thank you , Romain.

Mark James

December 2023

Virtual Machine, Docker container Detecting method to kill the docker image that cannot be killed with force commands many more

SOCIAL PRESENCE

GitHub

technical-interview-1

Simple million user page with user edit feature.

TypeScript

Stack Overflow

75 Reputation

EMPLOYMENTS

Senior Software Architect

GRÜN Ivaris AG

2021-05-01-2026-05-01

- Fueled a 5–10% yearly growth in the customer base by developing new features and improving the product
- Managed key technical p...

- Fueled a 5–10% yearly growth in the customer base by developing new features and improving the product
- Managed key technical projects, including alignment with technical partners and internal teams
- Reduced technical debt in the legacy codebase and improved development practices
- Automated the deployment pipeline and improved deployment performance and reliability
- Provided hands-on support across customer requests, performance tuning, new feature development, dashboards, invoicing, and improving existing processes and tools

PHP

Angular

TypeScript

PHP

Angular

TypeScript

React

Senior Frontend developer

Sunrise B2B

2020-03-01-2021-04-01

Part of an Agile team, building the Sunrise B2B portal sba.sunrise.ch for one of the leading Swiss teleco company. - Implementing the re...

Part of an Agile team, building the Sunrise B2B portal sba.sunrise.ch for one of the leading Swiss teleco company. - Implementing the redesign of the whole application - Building new components in Angular - Improving the performance for large customers Work on the B2C sales website : www.sunrise.ch - Formulate recommandations to adjust the sunrise.ch sales funnel - Implement improvements in the React components to increase sales

Angular

React

Angular

React

Independent Senior Frontend developer - www.yallo.ch - www.aldi-mobile.ch

Yallo / Aldi

2018-03-01-2020-03-01

Development of www.yallo.ch boosting sales by 300% over two years – 80% • Building loads of custom landing pages for promotions, upsell, ...

Development of www.yallo.ch boosting sales by 300% over two years – 80% • Building loads of custom landing pages for promotions, upsell, A/B tests, redesigning the whole site. • Setting up Sitespeed.io and coding tools to collect, classify, frontend and backend errors and act. • Improving the performance of the website (Http 2.0, refactoring, static compression, proper caching… bringing average loading time down from 10s to 2s. • Building an ID scanning app in WebRTC and ID validation portal for the admins and agents. • Support the development and adjustments needed to organize the QOQA fix net offers on sunrise.ch • Implementing Zendesk API’s and chat as well as all the support pages that rely on it. • Built the Aldi mobile POS App as well as the Yallo mobile app.

Node.js

Angular

RxJS

Node.js

Angular

RxJS

Apache cordova

PROJECTS

Physics 2D simulator

2015

A physics simulator build with Canvas. Simulates gravity and attraction between balls. sliders to customize the values of gravity, attrac...

A physics simulator build with Canvas. Simulates gravity and attraction between balls. sliders to customize the values of gravity, attraction, bounciness, number of objects simulated, size of objects. With an artistic twist trying to fit the items randomly with decreasing sizes thus creating a nice visual with a paint like effect

HTML/CSS

JavaScript

HTML/CSS

JavaScript