Senior Java Engineer Tech Lead - Vice President

Citigroup; Mississauga; On-site; CAD 171,000 - 242,000; Full time

Job summary

Citi in Mississauga, Canada, seeks a Senior Java Engineer/Tech Lead to design, develop, and optimize distributed data applications processing massive data volumes. You will build scalable backend services and data pipelines using Java, Spark, Hive, and Databricks.

Responsibilities include leading technical design discussions, mentoring teammates, and delivering enterprise-scale Big Data solutions in cloud environments, with emphasis on performance, security, and governance.

Qualifications

• 8+ years of software development experience.
• 5+ years of hands-on Java backend development.
• Expert in Java and Spark with Big Data tech experience.
• Strong SQL and data analysis skills.
• Experience with Databricks platforms.
• Experience in distributed systems and large-scale data processing.

Responsibilities

• Design, develop, and maintain scalable backend applications using Java.
• Build high-performance data processing pipelines with Apache Spark.
• Develop and optimize ETL/ELT workflows for large-scale data platforms.
• Work with Hadoop components including Hive, HDFS, YARN, and Spark.
• Design and implement distributed data processing solutions on Databricks.
• Develop batch and real-time data processing applications.
• Optimize Spark jobs for performance and scalability.
• Collaborate with data architects, engineers, and business teams.
• Implement data quality, validation, monitoring, and observability.

Skills

Java

Apache Spark

Hadoop ecosystem

Hive

Databricks

SQL

Distributed systems

Education

Bachelor's degree

Master's degree preferred

Tools

Apache Spark

Databricks

Hadoop

Hive

Job description

We are seeking an experienced Senior Java Engineer, Tech Lead with strong expertise in Java, Apache Spark, Hadoop ecosystem, Hive, Databricks, and large-scale data processing platforms . The ideal candidate will design, develop, and optimize distributed data applications and backend services that process massive volumes of structured and unstructured data. This role requires hands‑on experience with data engineering, big data technologies, cloud platforms, and performance optimization.

Responsibilities:

• Design, develop, and maintain scalable backend applications using Java.
• Build high-performance data processing pipelines using Apache Spark.
• Develop and optimize ETL/ELT workflows for large-scale data platforms.
• Work with Hadoop ecosystem components including Hive, HDFS, YARN, and Spark.
• Design and implement distributed data processing solutions on Databricks.
• Develop batch and real‑time data processing applications.
• Optimize Spark jobs for performance, memory management, and scalability.
• Work closely with data architects, data engineers, and business teams.
• Implement data quality, validation, monitoring, and observability solutions.
• Integrate data from multiple sources and platforms.
• Participate in code reviews and architecture discussions.
• Support production deployments and troubleshoot performance issues.
• Ensure security, governance, and compliance requirements are met.

Recommended Qualifications:

• 8+ years of software development experience.
• 5+ years of hands‑on experience with Java backend development.
• Expert in Java and Spark development with hands‑on experience with Apache Spark and Big Data technologies.
• Strong SQL and data analysis skills.
• Experience working with Databricks platforms.
• Experience in distributed systems and large‑scale data processing.
• Ability to lead technical design discussions and mentor team members.
• Experience delivering enterprise‑scale Big Data solutions in cloud environments.

Education:

• Bachelor's degree/University degree or equivalent experience
• Master's degree preferred

This job description provides a high‑level review of the types of work performed. Other job‑related duties may be assigned as required.

Job Family Group: Technology

Job Family: Applications Development

Time Type: Full time

Primary Location Full Time Salary Range: $120,800.00 - $170,800.00

Most Relevant Skills: Please see the requirements listed above.

Automated Processing and AI: We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi. Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision‑making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

This job opening is for an existing job vacancy.

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