Citigroup, Inc

Lead Python and Database Developer

Citigroup, Inc • $142K — $213K *
New York, NY 10025Hybrid
Information Technology
5 - 7 years of experience
Today
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Job Overview by Ladders

Qualifications

  • 6+ years of experience in a Data Engineering role.
  • Strong proficiency in Python (version 3.6+) and experience with Pandas and NumPy.
  • Experience in developing REST APIs using microframeworks like Flask.
  • Extensive experience with relational and NoSQL databases.
  • Solid understanding of data warehousing concepts and ETL processes.

Responsibilities

  • Lead design and development of data pipelines for data ingestion and transformation.
  • Develop and optimize data models for business and analytical needs.
  • Write optimized SQL queries using SQL Alchemy for performance.
  • Implement data quality checks to ensure data integrity and accuracy.
  • Contribute to data governance policies ensuring compliance with regulatory standards.
  • Continuously research and implement new technologies to enhance the data platform.
  • Take ownership of the deployment and monitoring of data pipelines in cloud environments.

Benefits

  • Medical, dental & vision coverage.
  • 401(k) retirement plan.
  • Life, accident, and disability insurance.
  • Wellness programs.
  • Paid time off, including vacation and sick leave.
Full Job Description
We are seeking a skilled and motivated Python and Database Developer to join our dynamic technology team. The ideal candidate will possess strong programming skills in Python, a solid understanding of database systems, and the ability to design, develop, and maintain efficient and scalable applications. This role involves working on a variety of projects, including data processing pipelines, web applications, and database integrations.

Responsibilities and Duties:
  • Data Engineering Leadership: Participate in design and development of data pipelines for ingestion, transformation, and loading of data from various sources (databases, APIs, streaming platforms) into our data warehouse/lake, ensuring seamless data flow and accessibility.
  • Develop data models that support business requirements and analytical needs.
  • Optimize data models for query performance and data accessibility.
  • Database Optimization: Write optimized and maintainable SQL queries and leverage SQL Alchemy for efficient database interaction, ensuring high performance and data accuracy.
  • Data Quality Assurance: Implement robust data quality checks and monitoring systems to ensure data integrity and accuracy, proactively identifying and resolving data issues.
  • Data Governance Contribution: Contribute to the design and implementation of data governance policies and procedures, ensuring compliance with regulatory requirements and internal standards.
  • Technology Innovation: Continuously research and implement new technologies and best practices to improve the efficiency, scalability, and resilience of our data platform.
  • Cloud Deployment & Monitoring: Take ownership of the deployment and monitoring of data pipelines and related infrastructure on cloud platforms such as OpenShift, ECS, or Kubernetes, ensuring optimal performance and reliability.
  • Operational Excellence: Ability to occasionally work a non-standard shift, including nights and/or weekends, and/or have on-call responsibilities to support critical data operations.


Required Skills and Qualifications:
  • Experience: 6+ years of hands-on experience in a Data Engineering role.
  • Ability to conceptualize, develop, and lead the execution of strategic AI initiatives that align with key business objectives and drive measurable value
  • Data Visualization: Experience with data visualization tools and techniques for presenting data insights effectively.
  • Agile Methodologies: Familiarity with agile development methodologies and experience working in agile teams.
  • Strong proficiency in Python (version 3.6+), with experience in Python packaging and shared libraries like Pandas and NumPy.
  • API Development: Experience implementing REST APIs in Python using microframeworks like Flask.
  • Extensive experience working with relational databases and NoSQL databases
  • Hand on skills in writing complex SQL and optimizing queries for performance.
  • Experience with workflow management tools like Airflow (experience with PySpark or PyFlink is a major plus).
  • Data Warehousing Knowledge: Solid understanding of data warehousing concepts and experience working with large datasets, including data modeling and ETL processes.
  • DevOps Practices: Experience working in a Continuous Integration and Continuous Delivery environment and familiarity with tools like Jenkins, TeamCity, SonarQube, OpenShift, ECS, or Kubernetes.
  • Software Engineering Principles: Proficient in industry-standard best practices such as Design Patterns, Coding Standards, Coding modularity, and Prototyping.
  • Design, develop, and maintain database schemas and models.
  • Write and optimize SQL queries for data retrieval, manipulation, and reporting.
  • Communicate technical concepts and solutions effectively to both technical and non-technical audiences.
  • Provide technical support and troubleshooting for production systems.
  • Stay up to date with the latest trends and technologies in Python development, database systems, and data engineering.
  • Evaluate and recommend new tools and technologies to improve development efficiency and product quality.
  • Contribute to the continuous improvement of development processes and practices.
  • Leadership & Mentorship: Ability to guide and mentor junior developers, fostering a collaborative team environment and promoting professional growth.
  • Communication Skills: Strong communication skills, both written and verbal, with the ability to explain complex technical concepts to both technical and non-technical audiences.


Education:
Bachelor's degree in computer science, Software Engineering, or a related field.

Job Family Group:
Technology

Job Family:
Applications Development

Time Type:
Full time

Primary Location:
New York New York United States

Primary Location Full Time Salary Range:
$142,320.00 - $213,480.00

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 12, 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.

Work You’ll Do

At Citigroup, Inc, you will engage in exciting work that matters. Join our team to help innovate and drive transformation in the banking industry. With Citigroup, you can lead initiatives that redefine how banking works and how financial services can empower people globally.

Innovate and Lead

Citigroup, Inc is at the forefront of financial innovation and leadership. By joining our team, you will work alongside top professionals to develop solutions that enhance customer experiences and operational efficiency. Our commitment to innovation is fundamental, and we encourage our team to push boundaries and think outside the box.

Grow Your Career

Citigroup, Inc is not just a company; it's a place where you can grow both professionally and personally. We offer robust career paths and professional development opportunities that help you reach your potential. With diverse career tracks and the support of leadership, your growth at Citigroup is limitless.

Diversity and Inclusion

We believe our strength comes from the diversity of our team. Citigroup, Inc is dedicated to fostering an inclusive workplace where everyone can contribute their best work. Through diversity training and a culture that embraces differences, we create a welcoming environment for all employees.

Benefits and Culture

Citigroup, Inc values the well-being of its employees. We offer competitive benefits packages that support the health, finance, and lifestyle of our team members. Our culture is built on collaboration, respect, and a commitment to excellence. We ensure that every team member feels valued and part of our global family.

Internship and Employment Opportunities

Start your professional journey with Citigroup through our internship programs or full-time job opportunities. We are constantly hiring fresh talent and seasoned experts who bring creativity and innovation to our team. Whether you're refining your skills or ready to lead, there's a position waiting for you at Citigroup.

Networking and Professional Development

At Citigroup, Inc, networking and continuous learning are part of our DNA. We provide platforms for employees to connect with industry leaders and peers, enhancing their skills and opening up new career opportunities. Our leadership programs and professional development initiatives ensure that you are always ahead of the curve.

Join Our Team

Explore the numerous positions available at Citigroup, Inc that match your skills and interests. We are looking for passionate, curious, and solution-driven team players who are ready to make an impact.

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Citigroup, Inc is where your ambition meets opportunity. Join us and transform your career while making a global impact.
Learn more about Citigroup, Inc
Market Cap
$1.3 billion
Industry
Finance & Insurance
Net Income
$89.6 million
Founded
1812
5 Year Trend
+4.6%
NASDAQ
C
* Ladders Estimates

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