René Weteling

CV - René Weteling Freelance | Full-Stack | Tech lead | Rails | Elixir | TypeScript Personal info Name Home address Mobile E-mail address Date of birth Birth place & nationality René Weteling Johannes Geradtsweg 47, 1222PM Hilversum +316 -- Capelle a/d IJssel, Dutch About me Tech has always been my passion, dating back to my earliest memories of tinkering with gadgets or diving into computers. This passion led me to pursue a bachelor's degree in IT sciences, laying the foundation for my professional journey. I gained diverse experience working for a design agency, where I collaborated with companies of various sizes and exposure levels. Transitioning to freelance work allowed me to deliver optimal value to my clients, a role that energizes and fulfills me. I thrive on sharing my expertise with teams and organizations, witnessing their growth and success. Colleagues often describe me as a sociable hard-worker with a keen sense of humor and a focus on results. Future roles Helping companies achieve their goals is something that gives worth and meaning to a day, that’s my main driver for a new role, to contribute and achieve goals. Those goals could be quite diverse, either creating features, assisting leadership to think more in a functional / technical direction or to mentor jr. devs and get the development team(s) in synergy. Some examples: Tech lead: As a tech lead, I would create solutions for requirements, make sure the team understands them and see them through to the end. Also checking-in / challenging leadership to see if this is the best fit for the issue at hand. Sr. Developer: creating features, setting up automations (CiCd), reviewing code of other developers, help to create solutions and overall support to the tech lead. My preferred tech stack consists of Ruby or Elixir, some partial Typescript, with these tools I can create a lot and quickly. That being said, i'm a polyglot, so give me a new language and i’ll be productive in no time. Skills & Knowledge Naturally, the list could extend further; however, I've curated the most pertinent highlights below. Dutch native proficiency English bilingual proficiency Elixir (Phoenix) Ruby (Ruby on Rails, Sinatra) Javascript (ES6, Typescript) Databases (MySql, Postgresql, SQLlight, MSSql) No-SQL databases (MongoDB, PouchDb, DynamoDB, Redis, ElasticSearch) Front-end frameworks (VueJs, Pinia, Ionic, React, Turbo, Stimulus) Style (Sass, Scss, Less, Css) Terraform (AWS-flavor) Hosting platforms (Heroku, Dokku, Docker, AWS, K8s) AWS (fargate, s3, route53, beanstalk, ec2, rds, ecr, etc.) Azure & Google Cloud (basic knowledge) Ci/Cd (Github Actions, Gitlab, CircleCi, Travis) Git flavors (Github, Bitbucket, Gitlab, Azure DevOps) Project management (Scrum, Agile, Clubhouse, Flow, Asana, ClickUp, Jira, Azure DevOps, etc.) Work, projects and experiences Semmie.nl Asset management simplified- -Present date Semmie is an asset manager where clients can easily open an account. Through a smart questionnaire, the associated risk profile is determined, and Semmie actively manages the investments. Clients can control everything through the app or online portal. Semmie also offers the option for advisors to set up all of this through the advisor portal. More about Semmie, click here My role in this project: Work on the OMS, API, Advisor portal (Rails application) Setting up features inside Azure Trouble shooting issues Odido / T-Mobile TSC - Business router gui's- - I am currently a member of the Red team in the Operational Support Services department, consisting of three RGB teams. Our primary focus is to create, manage, and support operational services to ensure the seamless functioning of our entire service portfolio. With over 18 applications to oversee, ranging from Node.js and Ruby on Rails to Elixir and Bash scripting, my team plays a critical role in maintaining their uninterrupted operation. More about T-Mobile, click here My role in this project: Work on multiple Rails, Elixir and NodeJs applications (19+ apps) Updating internal commonly used plugins (gems and hex packages) Setting up features inside GitlabCi General DevOps, provisioning Debian servers, load balancers etc Troubleshooting issues DPG Media backbone for media outlets- - MyChannels is a devision within DPG Media group that is responsible for all digital content on all digital outlets of DPG. Ad.nl, Volkskrant.nl, Hln.be, Trouw.nl, Parool.nl and so on. The team is compact, senior and knowledgeable. We are responsible for more than 5 million video plays each day. Creating services to supply the media outlets with video's, games and entertainment. Providing the mobile api for the Apps of the papers. And so on. More about DPG, click here More about MyChannels, click here My role in this project: Work on the Video Management System (Rails application) Work on the Video As A Service (Elixir application) Setting up features inside AWS Trouble shooting issues DigiB DigiB Chemical e-trading system- - Through DEPT im helping DigiB, thats the digital devision of Brenntag a worldwide chemical wholesale company to realize an ecommerce platform. The platform is built in React with Typescript, a NodeJs middelware that handles all api communuctation. More about DigiB, click here My role in this project: Work in the front-end team to realise new features Create React components Connect the middleware to multiple API's Help design a new event driven architecture (kafka) Zwitserleven Client portal for pensions- - Vivat is the mother company of Zwitserleven, Vivat has an "My" environment where clients can log in and see information about there products. My team was responsible for the Pension funnel. More about zwitserleven here My role in this project: Changing the loading sequense for better performance Moving from multiple serparate loaders to one global loader Small updates Re:turnista Parcel return software- - Re:turnista is an app where clients of webshops can return items they bought. Using a mobile first app, the user is guided through a couple of questions and the package is ready for pickup. The actual app is available here Ace & Tate Backend ecommerce system- - Ace & Tate sells glasses online and offline, they have "currently" over 30 stores world wide and they use an ecommerce platform (Solidus) to process all orders. Since the company continues to change, the backend also needs to be quite versitile. More info about Ace & Tate here My role in this project: Add features to the Solidus backend (Rails) Deploy using Elastic Beanstalk Maintane and update the over 30 private gems Add detailed tests for existing and new features Tankey Tankey Admin interface including API for gasoline loyalty program- - Tankey is a loyalty platform (LP) created by Essent for there other brand EnergieDirect. The fist version of the LP is built within Essent. Meaning that linking other company's proved to be difficult, thats why they have split up Tankey from essent and builind a new and better version of the app. More info about Tankey here My role in this project: Build a Rails Api to supply the android and ios clients with data Build an Admin interface where you can see KPI's, export transactions and get insight in what's happening Build a stable and tracable system, with the new GDPR rules we need to track when what concent is given etc. Link the backend to a push notification provider (firebase) so that we can notify our users Talk with the teams to find out what they are building next so that i can suplly the data on forhand Create a discount calculator, and method to stack discounts Link the api to the loyalty partners (Energie direct, and more to come), since you only get a discount when you are linked to a specific loyalty partner. Abn Amro Cybersecurity awareness app- - Veiligzondermoeite started out as a experiment from ABN Amro to help their cybersecurity office create awareness with clients of ABN Amro. There are alot of cybersecurity treats that are just not preventable with a technical solution like a firewall or password resets. Human engineering is currently quite hot. Just imagine, some hacker hacked the CEO’s email account, then the CEO goes on a well deserved vacation, and then the hacks sends an email to the chief of finance to pay 10K to some IBAN account. This is a case that you can prevent with awareness and that’s why The main ingredient was tasked by ABN Amro to create this app. My role in this project: Build a Node.js backend to supply the app with content and send Push notifications when new content is added Build a React Native app to create awareness about cybersecurity Obviously im not the sole force behing this amazing little app, from The Main Ingredient we had a great programmer, really eager to learn and ive learned allot from him. They also have a great designer, i was really impressed with the speed and accuracy that he can execute an idea or feeling into assets. Then TMI itself, it was great working with these guys, they really know how to manage Agile projects and it was fun! BotSquad - The simple yet powerful chatbot platform React - Webpack - Jekyll- - With the BotSquad bot, you can create bots for the web, mobile and chat interfaces like facebook, slack, twitter etc. There is a beautiful studio where you can create bots using a friendly and semantic DSL. And preview the bot in real time. My role in this project: React coding on the Chat client Creating the API RnD on the bot itself Adding features HalloRoos - SNS experiment HalloRoos - SNS experiment Rails - Roos API - Heroku- - HalloRoos is a contract alarm platform where users can set alarms for contracts that will expire in the future so that they can switch providers on time. HalloRoos was looking to extend their functionality and needed a developer to help them reach their goals. The subject itself is somewhat sensitive, but it comes down to a pretty selection then order flow with allot of validations and constraints. Each step is communicated to an API provided to store and manage the data. My role in this project: Build the pages as described in Rails using Slim, Sass, and CoffeeScript Connect the pages to virtual models so that we can apply validations Persist the validated models to the provided API Van Ons B.V. - Carpet App React - LibVips - OpenVc - DeepZoom- - Van Ons is a really cool WP design agency based in Amsterdam. For some projects, they contract out for special features and this was quite special. They wanted to create a web interface were clients can cut out a portion of a really big image (30 by 30 meters at 76 dpi approx 46GB per image). So I've developed a React frontend where the users can walk through the image using DeepZoom. And cut out a shape and then sending the coordinates to a worker server, cutting out the piece and mailing it to a carpet printer. Pretty heavy stuff. Everything was new, everything was exciting, it was an awesome project. The final version is visible here at Skonne My role in this project: Build a react app to define the area that needs to be sliced Create a slice worker server that slices the image according to the dimensions provided by the react app Figuring out how to slice images as big as 46GB each Revolve Music CTO - Rails - AWS - CI - rSpec- - Revolve Music is a SAAS platform where users (Artists mostly) can create a website, a digital presence in just a few minutes. Connecting to filled content providers like SoundCloud, BandsInTown, LinkedIn, Twitter etc your site is filled with content and you are ready to go. My role in this project: Clean up and rebuild existing code (the overall quality was very poor and not very robust) Create a Continuous integration environment using CircleCi and AWS container service Creating a global scaling web server setup using: Route53, AWS EC2, AWS EC2 container service, Cloudfront, RDS, S3 and Docker Being responsible for the Technical day2day, building team culture, applying standards, laying out technical roadmaps etc. CTO stuff. Leaplines Onboarding software for large company's- - Leaplines is a SaaS that helps companies with their on-boarding process. Providing a curriculum based on the employee's role within the company, with a clear hierarchical method of stimulating the users through there managers. We made use of the following: Rails, PostgresSQL, CircleCI, Github, Rspec with Capybara ( TDD ), jQuery, React, Rails UJS My role in this project: Going to clients, getting feedback from the source Building new features, mainly onboarding exercises in for form of a game Scrum plannings etc Horyon innovaties bv Horyon innovaties bv Android processapp, Rails backend- - Horyon innovaties B.V. is asbestos removal company. Asbestos has a bad reputation and that's why there is a lot of legislation. They are required to have all data on premise at all time. This is just not possible on paper, so we have created a Rails backend with an Restful api connecting an Cordova Android app. The app started out as a simple hour measuring platform, but now it has over 18 main functions and one of them is drawing on a photographed map. My role in this project: Design the product matching the needs of the business Creating a Rails backend, with role based authorisation Ops: it runs on my own High availability cluster powerd by Flynn.io Creating the React Cordova android app Click.nl - employed iOS, cordova and react development- - Coming back to click felt really good. They had so much faith in me that they wanted to set up a new office in Amsterdam with the main focus on Mobile. We had some really great clients. We have build an app for KPN where users can view the last goals in a soccer league. Build an app for a recruitment agency and many more. Overstappen.nl - employed Symphony - Php - Less- - This is the first time i got in contact with a proper framework. Symphony. It's mature, it has a rich plugin ecosystem, its consistent. I liked it allot. Learned a lot here, the main issue was that i was the only dev in the company so i got a bit bored and moved on. Great experience though. Click.nl - internship then employed Perl - CaretCMS - Scripting - Discovering- - My internship at Click.nl was great, a young team, cool founders, nice environment and Dirk the dog. I've learned so much here, multiple languages, dynamics in the company's themselves. Learned about budgets, stakeholders, planning etc. It was a great experience. Weteling Support Owner- -Present date While I was still in school I often helped my dad out with IT stuff, so he encouraged me to start a business so that I can send him an invoice. This started out as a hobby, but since 2015 I've been freelancing full time. And its great. I'm really glad that I made the leap from the security of employment to the world of freelancing. Education The Coding Gnome 2019 Elixir for programmers Learning elixir from Pragmatic Dave, what more can you say. Totally focussed and ready to digg in deep. Bureau Spraakwater 2018 Course public speaking Public speaking is an art by itself, im always amazed by speakers who can take over a whole room. Thats why i took this course, im more confident, know how to get peoples attention and have a better understanding on how to organise a talk. Demo-days, stand ups and board presentations have improved significantly Hogeschool Rotterdam 2004 - 2010 Bsc, ICT My bachelor information tech was a real eye opener. The more you learn about IT the more you recognise you don't know anything at all. The bachelor was a bit light for my taste, so i've decided to finish the bachelor while working. The extra hands on knowledge acquired at the office with the textbook information proved to be a real good combination. IJsselcollege 1999 - 2004 Havo, Natuur en Techniek