Full-Stack API developer

Digital transformation & modernization, operation and further development of automation and workflows. Operation and development of workflow automation, test environment operation, migration of Java tools to modern web services, backend microservice development with Spring Boot, CI/CD pipeline creation, Kubernetes deployments, frontend development with Typescript and React JS, API-first architecture with OpenAPI, persistence with JPA, Oracle, MS SQL, DevOps tasks including automation and error detection.

Development of a Golang application to improve Linux server security by analyzing access logs and creating firewall rules. Architecture consulting for Linux servers, AWS, and Kubernetes.

Developed full-stack web application with Spring Boot, Angular, Azure Cloud, and MongoDB. Backend microservice development, frontend with Angular and Electron.js, API-first design, Azure Data Engineering, DevOps with Azure DevOps, Kubernetes, Terraform, and workshops on NoSQL and API First.

Part-time projects for cloud automation and microservices with Python, Golang, and Java Spring Boot. API design and development, automation, bug fixing, and deployment with Jenkins and Kubernetes.

Extended complex Spring Boot application with Angular frontend. Developed RESTful APIs, API documentation, API gateway, service discovery, authentication and authorization, event-driven communication with Kafka, containerization and deployment on Azure Kubernetes, frontend development with Angular, Python scripting for REST API clients, agile development.

Developed REST API directory and management system with APIOMAT and Angular 7. Validated API specifications, automated tests, OAuth2 and OpenID implementation, frontend development, test automation with Postman, Karate, JUnit, Jenkins CI/CD, Docker images for Azure AKS, database persistence with Hibernate and Azure Cosmos DB, agile development.

Planned and designed transition from internal to external developers. Developed Spring REST API services integrating SAP systems. Developed Java applications with SAP interfaces, enhanced banking web services, documented architecture, conducted testing, managed human resources and sub-projects, workflow administration, PL/SQL script checking, mass print administration.

Customized Portainer dashboard for Docker containers, developed web frontend with AngularJS, REST API backend with Golang microservices, created Docker files and images, administered Docker containers, deployed on AWS EC2, managed AWS Docker repository.

Analyzed enterprise Java architecture, prepared technical documentation, analyzed support tickets and JVM memory management, presented architectural solutions, Java Spring Boot and Spring Data architecture consulting, Java license issues.

Created REST API guidelines, specified REST APIs with Swaggerhub, developed Java microservices on Google Cloud Platform, adhered to API First, BDD, TDD methodologies, integrated PostgreSQL DB, automated API interfaces, provided architecture consulting for GCP, managed CI/CD and code analysis.

Managed migration of Java repository and vulnerability monitoring, planned architecture, managed external staff, created migration documentation, implemented FileCloud, service virtualization, test data management, automated API tests, administered infrastructure.

Developed Java Spring Boot backend and REST APIs, frontend with Angular 5, Excel plugin for time management, data validation, persistence in GCP, remote data processing, SAP import interface.

Developed migration and automation tools for bank migration and test management, created API interfaces, Excel reports, automated evaluation of financial data, VBS scripting, weekend standby service, Linux and Windows server administration.

Analysis and troubleshooting of Java platform, project support for security and isolation, documentation, architecture consulting, toolchain operation, WebSphere server management, Java backend development, Linux shell scripting, automated deployments, 2nd and 3rd level support, batch job setup, database troubleshooting.

CRM desktop form data customizing, synchronization error fixing, XML editing, JavaScript business logic adaptation, deployment scripting, automation and optimization of deployment processes.

Siebel migration from version 8.1.1.7 to 8.1.1.11, IRM implementation, database upgrade, object manager creation, OpenUI activation, error analysis and fixing, documentation and feature development.

Developed MVC pattern website for infrastructure management, Glassfish server setup, JSF frontend, backend persistence with EJB and JPA, API requests with Servlets, authentication with LDAP Spring, portal page design, Siebel workflow integration, Oracle DB connection, 2nd level support, XML/XSLT configuration, Unix shell scripting, Perl and Java automation, Linux and AIX server administration, 2nd and 3rd level support.