Citigroup, Inc

Senior Python Developer

Citigroup, Inc$125K — $188K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 6+ years of software development experience focused on Python.
  • Experience with large-scale data environments.
  • Proven skills in Python scripting, automation, and backend development.
  • Ability to use AI-powered coding tools like GitHub Copilot effectively.
  • Strong understanding of object-oriented design, data structures, and algorithms.
  • Experience in a technical leadership or lead developer role.
  • Familiarity with CI/CD pipelines and tools.

Responsibilities

  • Lead the architecture and development of scalable Python applications and ML solutions.
  • Utilize Python for automation, data processing, and API creation while incorporating AI technologies.
  • Mentor software engineers in best practices, code quality, and problem-solving methods.
  • Guide architectural discussions and decisions to align with company technology strategy.
  • Create reusable libraries and frameworks for enterprise applications.
  • Process large data using Spark or PySpark.
  • Conduct thorough code reviews to enhance performance and compliance with standards.
  • Collaborate with cross-functional teams to ensure project delivery.
  • Identify opportunities for system improvements and performance tuning.
  • Promote best practices in software development, including CI/CD and automated testing.

Benefits

  • Medical, dental, and vision coverage
  • 401(k) retirement plan
  • Life, accident, and disability insurance
  • Wellness programs
  • Paid time off including vacation and sick leave
Full Job Description
The Senior Python Developer will assume a pivotal role in the conceptualization, development, and deployment of batch services data management pipeline. We are seeking a Senior Python Developer with strong experience in managing high volume of data processing in batch, bringing experience and expertise in parallel processing and optimal design. This role focuses on building, packaging, deploying, and scaling production-grade Python solutions. The ideal candidate has strong experience developing Python applications on OpenShift or similar containers. This individual will serve as both a hands-on contributor and a technical leader, tasked with guiding architectural choices, upholding stringent code quality standards, and cultivating an environment of technical distinction within the team.

Responsibilities
  • Function as a hands-on Senior Python Developer building batch services data management pipeline handling large volume of data
  • Function as a technical mentor for junior developers, offering guidance on leading practices, code integrity, design paradigms, problem-solving methodologies, and the effective utilization of AI-assisted development platforms.
  • Migrate Ab-Initio ETL tool-based batch services to Python batch services.
  • Spearhead the architecture, development, and deployment of resilient, scalable, and high-performance batch services in Python, actively incorporating advanced AI technologies to optimize code generation and boost efficiency.
  • Employ Python for automation scripting, large volume data processing, utilizing AI-driven coding tools to accelerate development timelines.
  • Orchestrate architectural dialogues and decisions for both nascent and established systems, ensuring alignment with the overarching company technical roadmap.
  • Develop reusable libraries and modular frameworks for enterprise use
  • Work with Spark / PySpark for large-scale data processing.
  • Perform thorough code reviews to ensure compliance with coding guidelines, enhance performance, and maintain system stability.
  • Collaborate closely with product management, QA, DevOps, and other engineering departments to delineate requirements, scope projects, and guarantee successful project delivery.
  • Identify and implement avenues for system enhancements, performance tuning, and the reduction of technical debt.
  • Advocate for software development best practices, including continuous integration/continuous delivery (CI/CD), automated testing strategies, and comprehensive observability.
  • Diagnose and resolve complex technical challenges across diverse environments, ensuring prompt solutions.
  • Keep abreast of emerging technologies and industry trends, assessing and recommending their adoption when advantageous, especially within the domain of AI-driven development.


Qualifications Required
  • 6+ years of extensive professional experience in software development, with a primary emphasis on Python.
  • Strong experience in large-scale data volume processing environments
  • Demonstrated track record in a hands-on technical developer capacity and championing technical initiatives.
  • Profound expertise with Python for scripting, automation, data manipulation, or backend system development.
  • Proven ability to leverage AI-powered coding assistants, such as GitHub Copilot or similar platforms, to achieve efficient and high-quality Java and Python code creation.
  • Solid understanding of distributed systems and cloud-native application development practices (e.g., Docker, OpenShift/Kubernetes).
  • Proficiency with CI/CD pipelines and tools (e.g., Jenkins, GitLab CI, Azure DevOps).
  • Exceptional problem-solving, analytical thinking, and debugging capabilities.
  • Strong interpersonal communication, collaborative skills, and leadership acumen, coupled with the capacity to influence and guide others.


Education:
  • Bachelor's/University degree or equivalent experience, potentially Masters degree


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:
Data Analytics

Time Type:
Full time

Primary Location:
Irving Texas United States

Primary Location Full Time Salary Range:
$125,760.00 - $188,640.00

In addition to salary, Citi's offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

Most Relevant Skills
Please see the requirements listed above.

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

Anticipated Posting Close Date:
Jun 14, 2026

About Citigroup, Inc

Citigroup is a financial services holding company that provides financial products and services. The company operates through two segments, Global Consumer Banking (GCB) and Institutional Clients Group (ICG). The GCB segment offers traditional banking services to retail customers through retail banking, commercial banking, Citi-branded cards, and Citi retail services. The ICG segment offers various banking, and financial products and services to corporate, institutional, public sector, and high-net-worth clients. This segment provides wholesale banking products and services, including fixed-income and equity sales and trading, foreign exchange, prime brokerage, derivative services, equity and fixed-income research, corporate lending, investment banking, and advisory services, private banking, cash management, trade finance, and securities services. Citi is committed to sustainability and social responsibility, and the company invests in initiatives that promote economic progress.

Citigroup, Inc Careers

Join the vibrant team at Citigroup, Inc, a leading global bank, and propel your career into the future. Citigroup offers a plethora of job opportunities that span across various fields and expertise, making it an ideal place for ambitious professionals to thrive.

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Learn more about Citigroup, Inc
Market Cap
$1.3 billion
Industry
Net Income
$89.6 million
Founded
1812
5 Year Trend
+4.6%
NASDAQ

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