Denver, Colorado
Cassandra Development/ Administration Consultant Job Opening in Denver, Colorado - We are looking for a person who is having hands on experience in Cassandra Development, Administration and having experience on Java/ J2EE and Big data technology stack will be added advantage.
Requirements:
? Cassandra cluster planning which includes Data sizing estimation, and identify hardware requirements based on the estimated data size and transaction volume.
? Create, install, and configure a Cassandra cluster
? Use tools to monitor cluster availability and performance
? Export data into different data formats
? Use primary index and secondary indexes correctly to perform queries on data
? Backup and restore data to secure the system in the event of failure
? Tune the performance of Java Virtual Machine (JVM), caches, and compaction
? Conduct a stress test on a Cassandra cluster and interpret the performance results
? Cassandra Data Modelling, NoSQL Architecture, Keyspace, Table, Index creation, User creation & access administration.
? Work closely with the application team to resolve issues related to spark, cql and loading issues etc.
? CQL Queries to support Integration with Cassandra Cluster
? Administration, Maintenance and supporting of the cluster using Opscenter, Devcenter, Linux, Spark,
? Working closely with Cassandra loading activity on history load and incremental loads from Oracle
? Databases and resolving issues and tuning the loader for optimal performance.
? Should have experience on Big data technologies like HDFS, SQOOP, Spark Stream & SQL, Kafka
? Good Experience on Core Java, Spring Boot Micro Services, REST & SOAP web services, Hibernate and proficient knowledge on SQL & PLSQL.
? Good Experience on streaming data using Flume.
JOB DESCRIPTION:
"Qualifications ? External:
Responsible for programming and software development using various programming languages and related tools and frameworks, reviewing code written by other programmers, requirement gathering, bug fixing, testing, documenting and implementing software systems. Experienced programmers are also responsible for interpreting architecture and design, code reviews, mentoring, guiding and monitoring programmers, ensuring adherence to programming and documentation policies, software development, testing and release.
Required Skills and Experience:
Write software programs using specific programming languages/platforms such as Java or MS .NET, and related tools, platform and environment. Write, update, and maintain computer programs or software packages to handle specific jobs, such as tracking inventory, storing or retrieving data, or controlling other equipment. Consult with managerial, engineering, and technical personnel to clarify program intent, identify problems, and suggest changes. Perform or direct revision, repair, or expansion of existing programs to increase operating efficiency or adapt to new requirements. Write, analyze, review, and rewrite programs, using workflow chart and diagram, and applying knowledge of computer capabilities, subject matter, and symbolic logic. Write or contribute to instructions or manuals to guide end users. Correct errors by making appropriate changes and then rechecking the program to ensure that the desired results are produced. Conduct trial runs of programs and software applications to be sure they will produce the desired information and that the instructions are correct. Compile and write documentation of program development and subsequent revisions, inserting comments in the coded instructions so others can understand the program. Investigate whether networks, workstations, the central processing unit of the system, and/or peripheral equipment are responding to a program's instructions. Prepare detailed workflow charts and diagrams that describe input, output, and logical operation, and convert them into a series of instructions coded in a computer language. Perform systems analysis and programming tasks to maintain and control the use of computer systems software as a systems programmer. Consult with and assist computer operators or system analysts to define and resolve problems in running computer programs. Perform unit testing Assist in system and user testing Fix errors and bugs that are identified in the course of testing.
? Qualifications: 3-9 years experience; Bachelor?s degree
? Should be proficient in Software Engineering Techniques, Software Engineering Architecture, Software Engineering Lifecycle and Data Management.
? Should have progressing skills on Business Analysis, Business Knowledge, Software Engineering Leadership, Architecture Knowledge and Technical Solution Design."
Must have skills
The Senior Developer - BigData should have the following Primary Skills: Telecom Knowledge, Spark, Cassandra, Hadoop
1. Cassandra Data Modeling, No SQL Architecture, Key Space Creation, Table creation with Primary Key, Partition Key, clustering key strategies.
2. Query tuning & Performance turning on cluster & Suggesting best practices
3. Cassandra Data loading activity on History Load and Incremental Load from Oracle Databases and resolving loading issues and tuning the loader for optimal performance.
4. Cassandra data model based on the data from Spark Streaming, and utilized CQL to fast retrieving, partitioning the data, validate the business transactions data.
5. Cassandra cluster planning which includes Data sizing estimation, and identify hardware requirements based on the estimated data size and transaction volume.
6. Good Experience on Backing up the Cassandra data base.
7. Install & configure multi node Cassandra cluster
In addition, they should have the following secondary skills: Kafka, Flume
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