Nick Muller Email and Phone Number

Developing software solutions for the world’s largest flower auction.

Helping teams by combining my passion for tech, with my other passion of knowledge sharing.See "Projects" section for more info about my freelance short-term projects.

Automate garage companies as part of the CarSys garage management software (GMS) development team of 20+ developers. CarSys is part of LKQ Corporation, a Fortune 500 company with more than 50.000 employees.REST/Web API backend in Go consisting of different microservices, AWS Lambdas and SQS queue. API consumed with React frontend written in Typescript, and sometimes a specialised Node/Remix web app.- Tech lead of first international and fully remote team. The team was… Show more Automate garage companies as part of the CarSys garage management software (GMS) development team of 20+ developers. CarSys is part of LKQ Corporation, a Fortune 500 company with more than 50.000 employees.REST/Web API backend in Go consisting of different microservices, AWS Lambdas and SQS queue. API consumed with React frontend written in Typescript, and sometimes a specialised Node/Remix web app.- Tech lead of first international and fully remote team. The team was responsible for multiple key features needed for expansion within the Netherlands en United Kingdom.- Worked on Go backend consisting of ~10 microservices and ~20 lambda functions.- Worked on React frontend with Typescript. Used libraries like Redux, MUI and React Query.- Developed migration system resulting in 2000+ new paying B2B users. Implemented via queuing system (SQS) and background worker, with focus on fast throughput and smell memory footprint.- Optimised the development process resulting in significant time savings of approximately 1 hour per developer per day.- Implemented QR-code based invoice payment system leading to new source via Next.js (App Router). Initially prototyped with Remix.- Introduced feature flag and A/B testing system, enabling seamless updates with no delays caused by unfinished features.- Established vulnerability reporting system enabling prompt resolution of security issues within minutes.- Integrated 5+ accountancy providers to comply with tax laws of different countries (EU+UK).- Implemented aggressive code splitting strategy resulting in 70% bundle size reduction.Tech stack: Typescript, React, Redux, Next, Remix, Go, Node, Jest, Cypress, Storybook, Datadog, Docker, Postgres, Redis, AWS (Lambda, Beanstalk, Cognito, and more), Gitlab, Agile/Scrum Show less

Consultancy on software architecture, development practices and infrastructure for the I-Synergy all-in-one business management application.

Software development consultancy and implementation for internal and external customers. Mainly focused on desktop apps and cloud based web apps (SaaS).Comprehensive full-stack software architect:Frontend desktop applications (.NET, WPF, UWP), Web applications (Typescript and React), Backend web APIs (.NET, ASP.NET Core),Databases (SQL Server, MySQL, Elasticsearch, Redis),Infra (AWS, Azure, VMWare, Cisco)Go- Technical lead and architect of 5+ software… Show more Software development consultancy and implementation for internal and external customers. Mainly focused on desktop apps and cloud based web apps (SaaS).Comprehensive full-stack software architect:Frontend desktop applications (.NET, WPF, UWP), Web applications (Typescript and React), Backend web APIs (.NET, ASP.NET Core),Databases (SQL Server, MySQL, Elasticsearch, Redis),Infra (AWS, Azure, VMWare, Cisco)Go- Technical lead and architect of 5+ software projects.- Responsible for internally developed API framework (C#, ASP.NET Core) which was used for various projects within the company. Used techniques like Automated Tests and Continuous Integration/Delivery together with an agile way of working to release improvements to the framework in short iterations with a high level of quality.- Migrated on premise server environment to cloud environment saving 1 day of work every week (at least 20% reduction of costs) and 80+% less outages.- Implemented new authorization method in official Microsoft Azure Go SDK https://github.com/Azure/azure-sdk-for-go for usage in Infrastructure as Code repository and GitOps. Show less

Creating the best tools possible for health professionals and their clients, by listening to our experienced personal trainers team and their customers, while still keeping availability, data security and high performance in mind.- Re-designed and re-architected desktop application to a modern web based application architecture architecture which unblocked future grow in customers and had 80+% less downtime.WPF + WCF -> React + .NET (Core) APIOn premise -> AWS ->… Show more Creating the best tools possible for health professionals and their clients, by listening to our experienced personal trainers team and their customers, while still keeping availability, data security and high performance in mind.- Re-designed and re-architected desktop application to a modern web based application architecture architecture which unblocked future grow in customers and had 80+% less downtime.WPF + WCF -> React + .NET (Core) APIOn premise -> AWS -> Azure- Created search engine for 1000+ of training exercises, 1000+ recipes and 100+ training schedules via Elasticsearch.- Created sport intensity and nutritional goal recommendation engine which can generate training schedule and dietary plan for 10 weeks with minimum input (1-2 min max) from the user.- Implemented online payment system saving 90% administration costs.- Implemented OAuth2 server which allowed integration with 3rd part vendors resulting in many additional sport gyms (B2B) customers.Stack: .NET (Core), Web (Typescript + React), SQL Server, Redis, Elasticsearch, Docker, AWS, Azure Show less

Risk analysis and compliancy research (ISO/IEC 27002) for internally developed software and business practices.