High load Web Services

looking for an experienced Architect / Senior Java Developer (contract work / Krakow, Poland) for 3 months.

Required skills:
5+ years of experience in building complex J2EE applications
Expert on database design and optimization
Deep understanding of modern technology
Expert on Testing procedure, Continuous Integration
Good teamwork, commitment, autonomy and ownership of assigned tasks
Troubleshooting
Spring Framework
JPA/Hibernate
SQL, NoSQL db
DevOps Skills
REST/JSON
GIT/SVS
Leadership
Problem solving
Continuous integration (build + deployment). Jenkins server configuration
Experience with Agile / Scrum methodologies
English - fluent

We offer:
Contract work in Poland (Krakow)
Opportunity to work with latest technologies
Career growth opportunity
Work in friendly and highly professional team

Responsibilities:
Design of application [web, desktop, portable device] and understanding of the technical implementation from functional brief
Development of web, desktop and service application based on Java technology
Design and development of databases
Write functional spec and conduct analysis of business requirements, including use-case, sequence flow, wireframe
Lead of a development team