Java Backend Developer

Senior level • Full-time • On-site • Cluj-Napoca

HDOPT002

Job Summary

With over 40,000 business customers subscribing to more than 650,000 services, our client has become the industry's leading provider of unified communications and collaboration (UCC) services in the cloud for small and medium businesses and mid-market and distributed enterprises. They deliver a broad suite of UCC services to in-office and mobile devices spanning cloud telephony, virtual contact center and virtual meetings through a proprietary unified Software as a Service, or SaaS, platform. They hosted VoIP communications free companies from the burdens of outmoded on-premises systems that thwart productivity and drain profits. Our client's flexible, scalable cloud solutions combine ease of use and management simplicity with rigorous security, compliance and reliability.

Responsibilities:

Understand, interpret and clarify functional requirements as well as technical requirements for the project
Work together with product and development teams to define software specifications
Collaborate and lead architecture and design decisions driving platform direction
Implement and maintain back-end functionality supporting front-end services and applications

Requirements:

Minimum 4 years technical experience
Full lifecycle development experience with applications deployed on Linux
Strong technical skills in Java, SQL, web and database technologies
Strong experience with Spring Core, Spring Data, Spring Security, transaction context
Good experience with REST Web services
Excellent problem solving skills and ability to work independently and with others
Application performance management skills
Knowledge of secure coding practices

Preferred Qualifications: (some of the following)

Experience with relational database like MySQL and NoSQL databases like HBase, MongoDB or other big data solutions like Hadoop ecosystem with Storm, Hive, Flume, Zookeeper, etc.
Hands on working knowledge with XSD/DTD, XML and related technologies
Knowledge about network protocol like HTTP/HTTPS, SIP,SDP, RTP/RTCP, SRTP/SRTCP, TCP/IP and network programming, Java NIO, etc.
Knowledge about asymmetrical and symmetrical cryptography standards including PKI, RSA, 3DES, AES, MD5, SHA-1/SHA-2, HMAC, etc.