Senior Java/Hadoop Developer

The Jonah Group is looking for an experienced Senior Java/Hadoop Developer to join our team of accomplished tech professionals to design and develop custom enterprise solutions. Successful candidates should possess expertise in processing data in Batch and Stream.

What We Do:
Jonah has produced high quality commercial systems for the banking, auto finance, capital markets, health insurance and pension plan industries (to name a few). We consistently work towards designing and building high-performing enterprise solutions with emphasis placed on great user experience, robust architecture, and a perfect fit. Here at Jonah, you’ll have the opportunity to contribute your technical expertise alongside a team of software specialists who are passionate about what they do.

What You’ll Do:
• Design and develop data ingestion pipelines
• Perform data migration and conversion activities
• Develop and integrate software applications using relevant development methodologies and standards
• Apply standard architectural patterns in consideration of critical performance characteristics and security measures
• Collaborate with Business Analysts, Architects and Senior Developers to establish the physical application framework (e.g. libraries, modules, execution environments)
• Perform end to end automation of ETL process for various datasets that are being ingested into the big data platform
• Document and maintain project artifacts
• Suggest best practices and implementation strategies using Hadoop, Java, ETL tools
• Maintain comprehensive knowledge of industry standards, methodologies, processes, and best practices
• Various duties as assigned

Your Preferred Profile:
• A Bachelor’s degree in Computer Science or a related IT discipline
• 5+ years of experience in IT development
• Strong, hands-on experience with J2EE development
• In-depth knowledge of SCALA – Spark programming
• 3+ years of professional experience with Hadoop (HBase, Hive, MapReduce, Sqoop, Flume) Java, JavaScript, .Net, SQL, PERL, Python or equivalent scripting language
• Demonstrable experience with ETL tools
• Prior knowledge of integrating web services
• Well-versed in software development methodologies (agile, waterfall)
• Excellent written and verbal communication skills
• Willing to work flex work hours as necessary to support application launches and manage production outages
• Ability to multitask with numerous projects and responsibilities
• Experience working with JIRA and WIKI
• Comfortable operating in a fast-paced dynamic environment
• Can operate effectively as an individual contributor

Required Technologies: Java/J2EE, Web Applications, Tomcat (or any equivalent App server), Restful Services, JSON, Spring, Spring Boot, Struts, Design Patterns, Hadoop (preferably Cloudera (CDH)), HDFS, Hive, Impala, Spark, Oozie, HBase, SCALA, SQL, Linux

Nice to Have: Google Analytics, Adobe Analytics, Python, Perl, Flume, Solr, Strong Database Design Skills, ETL Tools, NoSQL databases (Mongo, Couchbase, Cassandra), JavaScript UI frameworks (Angular, NodeJS, Bootstrap)

What You’ll Like About Working Here:
• Family-friendly benefits and vacation time
• Annual training budget and professional development for fulltime employees
• The flexibility of a software consulting environment; project variety, adapting to new business domains, and building complex applications
• Ability to flex your creativity muscle, and have your opinions heard
• A work culture where you’ll look forward to coming in every day
• Enough coffee and tea to appease your daily caffeine fix
• Free food and beverages during events like Thursday Night Socials
• Downtown Toronto location (easily accessible by public transit)

All interested candidates should send their resumes to Please include “392 – Senior Java/Hadoop Developer” in the subject line. We want to thank all individuals who apply and will be contacting suitably qualified applicants as soon as we can.

For more information about the Jonah Group, please visit

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