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Added 1 hour ago
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Functions - Internal Audit, Summer Analyst - Mississauga, ON 2027
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Citi

Python (Ab Initio) Engineer

Mississauga, ON, Canada

Pay: $94,300.00 - $141,500.00
Job type: Full-time
Experience: 4+ years of extensive professional experience in Oracle PL SQL program development using Java/Python/Spark/Kafka/Abinitio ETL technologies and Oracle as database.
Posting language: English
Posted: Sep 21, 2026

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Original job description

The Applications Development Senior Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to applications systems analysis and programming activities.

Responsibilities:

Lead the design, development, and implementation of complex Data processing and analysis script using Oracle PL SQL programming, Python scripting , Unix Shell Scripting ,etc. for processing large datasets, leveraging expertise in distributed computing and data manipulation.
Partner with management teams to seamlessly integrate with ETL Framework & Spark-based solutions into existing data infrastructure, ensuring optimal performance .
Data integration delivery: Design, build, and operate robust batch process
Create Reconciliation process to validate data post ETL batch data load process : Develop and optimize workflows using smart automated data reconciliation
Create reusable patterns for ingestion, transformation, and automation data testing
Good to have knowledge to build Python engineering: Build Python-based utilities and frameworks for data loads,
Expert in automation, validation, reconciliation, and operational tooling.
SQL excellence: Write and tune complex SQL (query optimization, indexing strategy awareness, incremental loads, CDC patterns, and performance troubleshooting).
Data quality and controls: Implement validation rules, error handling, auditability, and reconciliation controls; create monitoring/alerting to meet SLAs
Architecture and design: Contribute to system architecture and integration design decisions (data contracts, schemas, versioning, resiliency).
Collaboration: Work closely with different workstream of application teams, enterprise architects, and analytics consumers to align on data definitions and delivery priorities.
Operational ownership: Participate in release planning, production support, incident triage, and continuous improvement to enhance reliability and reduce run-time cost.
Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary
Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Qualifications:

4+ years of extensive professional experience in Oracle PL SQL program development using Java/Python/Spark/Kafka/Abinitio ETL technologies and Oracle as database.
Proven experience with shell scripting for large-scale data processing and distributed computing.
Thorough knowledge and hands-on experience with Oracle Database and Database housekeeping activities.
Strong understanding of data architecture principles and data infrastructure.
Good to have hands on Experience on Python in developing complex ETL applications.
Proficiency with Oracle PL/SQL or SQL, SQL tuning, writing packages, triggers, functions and procedures.
Expert in UNIX knowledge
Experience with data conversion / migration
Excellent trouble shooting and debugging skills.
Experience with developing and maintaining coding standards, testing, and debugging for complex applications.
Demonstrated ability to provide technical leadership and mentor junior engineers.
Excellent analytical, problem-solving, and critical thinking skills.
Strong communication and collaboration abilities, with experience partnering with various stakeholders.
Knowledge of risk assessment, data security, performance optimization, and scalability considerations.
Good to have exposure and hands on reporting tools like Tableau, Micro strategy, etc.

Education:

Bachelor's degree in Computer Science, Engineering, or a related field.
Master’s degree preferred

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Job Family Group:

Technology

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Job Family:

Applications Development

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Time Type:

Full time

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Primary Location Full Time Salary Range:

$94,300.00 - $141,500.00

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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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.

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This job opening is for an existing job vacancy.

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

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More about this job

Responsibilities

Lead the design, development, and implementation of complex data processing scripts and ETL solutions using Python, Oracle PL/SQL, and Spark. Collaborate with cross-functional teams to ensure data quality, system architecture alignment, and operational reliability through release planning and production support.

Requirements

Requires 4+ years of professional experience in Oracle PL/SQL development using Java, Python, Spark, Kafka, or Ab Initio ETL technologies. Candidates must possess strong knowledge of data architecture, shell scripting, and database housekeeping activities.

Skills

Python
Oracle PL/SQL
Unix Shell Scripting
Ab Initio
Spark
ETL Framework
Data Integration
Data Reconciliation
SQL Tuning
Distributed Computing
Kafka
Java
Data Architecture
Performance Troubleshooting
Automation
System Architecture

Visa sponsorship

Not detected in the job text

Keywords

Python
Oracle PL/SQL
Ab Initio
Spark
Kafka
Java
Unix
Shell Scripting
ETL
Data Processing
Distributed Computing
Data Integration
Reconciliation
SQL Tuning
Data Architecture
Performance Optimization
Tableau
MicroStrategy
Data Migration
Automation
System Architecture
Database Housekeeping
CDC Patterns
Data Quality
Incident Triage
Release Planning
Coding Standards
Debugging
Technical Leadership
Risk Assessment

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