Ernő Józsa

- Managed the implementation of a complex Angular and AWS-based ERP system for a freight forwarding company. Created a single platform for collaboration and data management. Replaced manual work, sped up information processing and digitalised data storage. - Result: reduced postal costs from 5400 EUR yearly to zero by digitalisation. - Coordinated and managed the seamless cross-functional team collaboration. - Leveraged extensive expertise in AWS-based cloud development to mentor and guide the team, defining and implementing robust software architectures and automation processes. - Initiated development practices enhancements for increased efficiency - Gathered the requirements from the stakeholders and translated these business needs into technical solutions. - Defined and implemented software architectures, automation processes, and software solutions

Engineering / Mentoring / Leadership - Mentored a team of 4 through design kick-offs, code reviews, and pair programming. - Led the development of a next-generation frontend library using Svelte, Typescript and Vite. - Result: achieved nearly 40% increase in developer efficiency regarding the speed of development. - Result: reduced the cognitive complexity by 78%, that sped up the introduction of new features. - Enhanced a Micro-service-based chat bot application using JavaScript, Node.js and Docker. - Result: sped up the setup of the developer environment by 30% using Docker-compose. - Modernised and replaced 100+ legacy applications. Drove protocol decommissions, implemented new technologies and applied clean code writing principles. - Result: reduced cognitive complexity by 80-90% which sped up maintenance. - Developed and maintained a React-based size recommendation web-shop plugin for numerous prominent brands in the fashion and retail industry (Walmart, Gucci, Columbia, Keen, Ssense). User experience / Product - Enhanced user engagement significantly through close collaboration with Product Management. Automated plugin customisation processes which significantly sped up partner onboarding lead times. DevOps - Researched, developed, and automated testing for a natural language processing component. - Result: reduced errors by 30% and enhanced code maintainability and reliability. - Optimized CI/CD Docker build using multi-stage builds and layer caching. - Result: reduced lead time from 90 minutes to 10-15 minutes for a build of 24 micro-services. - Initiated and executed Docker-based software environment packaging. Mitigated risks from environmental differences on developers' machines and improved deployment consistency.

- Developed an SDK (Software Development Kit) for the SAP Cloud Platform Mobile Service, incorporating authentication, data management, and ODATA proxy classes. - Led the full development lifecycle ‘SAP IoT Gateway Mobile’ (including Android development and UI design) for SAP TechEd Barcelona 2018, enabling onboarding of Texas Instruments SensorTag via mobile devices, leveraging MQTT and HTTP protocols. - Collaborated with cross-functional teams to ensure alignment on technical specifications and architectural decisions, utilizing SAP technologies such as SAPUI5, Fiori, XSJS and OData.

I was creating different kinds of web-based software systems using Java, NodeJS, Python on the backend side, JavaScript on the client side (KnockoutJS, AngularJS, jQuery, etc.), and SQL database. I was mostly working on business applications for small businesses, but I have created a couple of other systems as well. Invoicing, Stock, and Inventory management software: I was developing invoicing software for a small enterprise, with inventory management, financial and accounting reports. It was a web-based software system, which consisted of a JavaScript thick client, and a REST-based server-side application. The application was accessible through a desktop web client and through an iOS webapp. The mobile application was created using responsive web techniques, and KnockoutJS/AngularJS framework. Fuel station level gauge: I constructed several web applications that were used in a company intranet by its employees. These applications were able to be installed on an iOS device, so they looked like native applications. This level gauge was running on a server of a fuel station, and it was capable of showing the actual level of the tank. Furthermore, it was doing some analysis to detect when a tanker was filling it up. Company websites, and online portfolios: I delivered a couple of personal websites, portfolios, and marketing websites. For some projects, I have used a CMS system, but there were projects where I created a plain-old HTML site, to maximize the performance. I was working with SEO, and Online marketing as well. Web-based ticketing systems with mobile clients: A system that consists of a JS web client that can be accessed from mobile devices, and a REST-based backend with an SQL database. Clients can use this application to stand in a virtual queue, in order to ease the waiting for a given operator.

I worked for a company dealing with transportation and logistics as a DevOps developer. I was participating in system administration and in the development of small web-based tools for internal use. I also had the opportunity to deal with system integration between these small applications and the company’s ERP system. ➤ Developing web-based software applications, integrated with the company’s ERP system ➤ I helped operate and maintain Windows domains, and support the enterprise employees ➤ Web-based application development ➤ Working with MS SQL database server ➤ Deployment of web-based systems ➤ Maintaining windows server environment ➤ Handling client requirements