János Ronyecz Email & Phone Number

Budapest, Hungary

Vienna, Austria

• At Jumio, I was working for one of the market leaders in the global identity verification space.By developing highly performant, robust and scalable web services and back-ends, I had an impact on the latency and.
• Being part of a cross functional team to work on continuous improvement of our systems
• Collaborating closely with the team to deliver features working from requirements into the production environment
• Work with QA Engineers to maintain and improve quality, and with DevOps engineers to support operational and troubleshooting work
• Define and use best practices to produce new features in the most effective way while continuously improving the quality of existing system
• Keep up to date with the latest technologies

• Contribution in the development of an advisor platform that supports client's complex portofilo management and financial planning.Achivements/Tasks:
• Implementing various microservices that connects to DynamoDB
• Creating necessary AWS infrastructure with proper functionality, suchas SNS, SQS, Lambda, DynamoDB, DynamoDbStream
• Developing DataLake ingession
• Enforce 24/7 support related to our services
• SRE responsibilities in our Team

• From an old monolith, financial goal calculation features were moved into a new SpringBoot ECS service.Achivements/Tasks:
• Reimplemented the old functionality in an efficient manner
• Developed cache feature using DynamoDB to achive better performance
• E2E testing to ensure the correctness of outsourcing

• As a member of the Platform team, got involved in work of couple of services.Achivements/Tasks:
• Planned and implemented the new architectural behaviour of services
• Performed E2E and release testing of services
• Enhanced code quality for the better performance and maintanability
• Took part in 24/7 operational support

• The current project was an analytics platform with many useful services, which leverages machine learning to extract value from customer analytics data for real-time decisioning.Achivements/Tasks:
• Rewrote the Ui component using React & Redux
• Enhanced background service functionality
• Optimized Database queries and led in cache mechanism

• Crowd Analytics project aggregated subscribers’ movements data coming from mobile network elements continuously, so later, Customer was able to generate many kinds of reports with wide range of parameters, which were.
• As part of UI team, I took part in development of report generation and visualization.
• Productized the UI component which was taken over from a Proof of Concept
• Expanded functionality of API part running on Node.js
• Implemented new reports visualization
• Upgraded the whole UI project from Angular 2 to Angular 5

Maintaining and adapting Nokia's look and feel on a marketing related project which was inherited from another company.

Developing and testing Java based backend service and also maintened a Java web application which enabled mobile service providers to provision new mobile devices easily.

Taking part in developing mobile clients for various products to support server side functionality. Firstly on Symbian platform but later on Android and BlackBerry.