Work over ten years without development and level three support on mission critical systems.
Programming languages:
Java (JavaEE, JPA, Hibernate, JSF, Spring, Camel), C and Perl.
AWS Cloud:
CloudWatch, Elastic Beanstalk, Simple Notification Service, Single Queue Service, Lambda, EC2, ECR, ECS, EKS, S3, Aurora PostgreSQL, DocumentDB, DynamoDB, ElastiCache, VPC, CloudFront, Route 53, API Gateway, AWS Auto Scaling, Elasticsearch, Elasticsearch, AWS Cloud Computing.
Database:
Oracle, mysql and postrgresql, mongoDB.
Application Server:
Jboss, Weblogic, TomCat, Apache.
Operational systems:
Solaris (Unix), Linux, and Windows