I'm René

About the company:

TommyTomato has a mission to turn all children into lifelong vegetable eaters. Plant a seed, harvest a healthy generation. They achieve this by bringing healthy, hot, and above all tasty lunches to schools. This involves a considerable amount of logistics; all lunches must be delivered hot and on time.

My role:

TommyTomato is growing rapidly, so much so that the current IT landscape cannot handle this demand. That's where I come in.

From a Ruby monolith with performance issues, we are transitioning to a monolith prepared for a reactive event-based services structure, with the ultimate goal of rewriting everything into Python microservices driven by a queue (Kafka).

My tasks include making the Rails app future-proof, rewriting it into a services architecture, setting up CI/CD, deploying pipelines, and setting up AWS infrastructure with Terraform. And many more things.

Techniques used:

About the company:

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.

My role:

In the vast landscape of Semmie's tech infrastructure, I find my focus within the intricate layers of the CRM backend, API, (Mobile) App, and Advisor portal – essentially, the tech heartbeat of our operation. My current playground is the backend, where I'm actively shaping and enhancing features for the Rails API and App. Simultaneously, I'm deeply immersed in setting up DevOps resources, collaborating seamlessly with Azure.

Addressing the historical separation between the frontend and backend teams, my goal is to close the gap, encouraging cross-functional collaboration, and ultimately forging a cohesive, unified team. Let's seamlessly merge these tech realms into a singular, synergistic force.

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About the company:

Odido formally known as T-Mobile, digital realm extends beyond what meets the eye. As a developer in the company, I have the opportunity to think like an architect, considering responsibilities, data storage, and optimal placement. It's an engaging and enriching experience.

My role:

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.

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About the company:

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 and MyChannels

My role:

As a full-stack developer ive worked on the backend, mainly in Phoenix and Ruby on Rails, created new interfaces inside of the videoplayer using React, Svelte and Typescript. Changed styling for new brands. Added schema changes. In the last 6 months my focus was on infrastructure, moving from manual created infra to Terraform, implementing security best practices and made the whole infra more robust and flexible.

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About the company:

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

My role:

As a full-stack dev, i was tasked to give the current architecture some love to make it more performant. We removed all the custom form logic and implemented a package called Formik, changed the event structure to work more with reducres. Allover cleanup and moder (module) izing of the system.

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About the company:

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 and The Main Ingredient

My role:

As a front-end developer, i changed the loading system (basically the system contained multiple systems so a dynamic loader was needed, escpecially with varying backend services). Created small updates, and fixed some tickets.

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About the company:

DigiB is a division of Brenntag, Brenntag is marktleader in the supply of raw chemicals. DigiB is tasked with the digital transformation of Brenntag by bringing an e-commerce system, internal trading and couplings between all offices.

More about DigiB

My role:

As a front-end deverloper ive worked with the front-end team to expand the e-commerce system build in React, with NextJs and a NodeJs middleware. Also ive been working on the "target architecture" an overcoupling system that is able to connecgt multiple ERP systems like Oracle, SAP, Salesforce etc. This design was Reactive using a message bus.

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About the company:

Ace & Tate sells glasses online and offline, they have "currently" over 30 stores world wide and they use an e-commerce platform (Solidus) to process all orders. Since the company continues to change, the backend also needs to be quite versatile.

More info about Ace & Tate

My role:

As a full-stack dev, i was taksed to optimize and add features to the Solidus powered Ruby on Rails backend. For the consumer and POS facing this was mostly an API. For the internals there was an Admin section and for the internal Friends and Family there was a complete suite with admin panel implemented. I helped maintain over 30 gems, used Elastic Beanstalk for running the app. And increased the testcoverage allover.

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About the company:

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

My role:

As a backend developer I was tasked to build an API for the Tankey Android app, build an admin interface where the business can see KPI's, create exports and get the correct insights in what the app is doing. Build a stable and auditable system concerning the new GDPR ruling. Create API couplings between Firebase for in-app notifications. Create a discount calculator module. And integrate loyalty partners through our API.

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About the company:

The Main Ingredient was tasked to help out the CyberSecurity department of ABN Amro with creating more awareness for cyber threats for small companies. Think of phishing emails, certain new techniques that they have spotted or even human engeneering. TMI came up with Veiligzondermoeite.nl, an initiative to inform the general public.

More about Veiligzondermoeite and TMI

My role:

As a full-stack developer, I was asked to led a team of highly skilled developers and designers to create in just 6 weeks a working POC of the app. The app was built in ReactNative, the backend in NodeJs using Express as server layer and deployed on BeanStalk using a CloudFormation template. Also we hooked up an RDS instance for our persistance. My main focus was in creating the backend and helping out with the ReactNative app. The team was excellent in styling / creating components, my assistance was most needed in hooking up the API's.

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