Lead Full Stack Developer

Citigroup Inc.; Chennai District; On-site; INR 4,000,000 - 9,000,000; Full time

Job summary

Citigroup Inc. seeks a Senior Lead Technical Java Developer with Python experience to drive design, development, and delivery of complex software solutions. You will lead architecture, ensure code quality, and mentor a team of engineers in a Java-centric, cloud-native stack.

The role emphasizes hands-on leadership, modern software practices, and collaboration with product, QA, DevOps, and cross-functional teams to achieve robust, scalable systems.

Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering, or related field.
• 10+ years of software development experience with a strong Java focus.
• Proven technical leadership or lead developer experience.
• Strong Java proficiency (Java 8+), Spring ecosystem.
• Proficiency in Python for scripting and backend tasks.
• Solid understanding of OO design, patterns, data structures, and algorithms.
• Experience with relational and NoSQL databases (PostgreSQL, MySQL, Cassandra, MongoDB, Redis).
• Experience designing RESTful APIs and microservices.
• Experience with message queues (Kafka, RabbitMQ, ActiveMQ).
• Cloud-native development with Docker/Kubernetes; familiarity with CI/CD (Jenkins, Azure DevOps, GitLab).
• Excellent problem-solving, analytical, and debugging skills.
• Familiarity with test frameworks: JUnit, Mockito, PyTest.
• Strong communication, collaboration, and leadership abilities.

Responsibilities

• Lead design, development, and deployment of Java-based applications and services.
• Use Python for scripting, data processing, and automation as needed.
• Mentor engineers and drive technical excellence across the team.
• Lead architectural discussions to align with tech strategy.
• Design scalable microservices and event-driven architectures.
• Perform code reviews and optimize performance and stability.
• Collaborate with product, QA, DevOps and other teams to deliver projects.
• Identify improvements and reduce technical debt.
• Promote CI/CD, automated testing, and observability practices.
• Troubleshoot complex issues across environments and provide timely resolutions.
• Stay updated on new technologies and evaluate adoption.

Skills

Java

Spring

Python

REST APIs

Microservices

CI/CD

Docker

Kubernetes

Distributed systems

Education

Bachelor's or Master's in CS/Engineering

Tools

PostgreSQL

MySQL

MongoDB

Redis

Jenkins

AWS

Azure

GCP

Docker

Kubernetes

Job description

Senior Lead Technical Java Developer with Python Experience

Position Summary

The Senior Lead Technical Java Developer will play a critical role in the design, development, and delivery of complex software solutions, primarily using Java, while also leveraging Python for scripting, data analysis, automation, and integration with our broader ecosystem. This individual will not only be a hands‑on contributor but also a technical leader, responsible for driving architectural decisions, ensuring code quality, and fostering a culture of technical excellence within the team.

Responsibilities

• Lead the design, development, and implementation of robust, scalable, and high-performance applications and services primarily in Java.
• Utilize Python for scripting, automation, data processing, machine learning integration, and API development where applicable.
• Act as a technical leader and mentor to a team of software engineers, providing guidance on best practices, code quality, design patterns, and problem-solving.
• Drive architectural discussions and decision‑making for new and existing systems, ensuring alignment with overall company technical strategy.
• Experience in designing scalable and high‑performance systems using micro‑services, event‑driven principles.
• Conduct code reviews, ensuring adherence to coding standards, performance optimization, and system stability.
• Collaborate closely with product management, QA, DevOps, and other engineering teams to define requirements, scope projects, and ensure successful delivery.
• Identify and implement opportunities for system improvements, performance tuning, and technical debt reduction.
• Champion software development best practices, including continuous integration/continuous delivery (CI/CD), automated testing, and observability.
• Troubleshoot complex technical issues across various environments and provide timely resolutions.
• Stay abreast of new technologies and industry trends, evaluating and recommending their adoption where beneficial.

Qualifications Required

• Bachelor's or Master's degree in Computer Science, Engineering, or a related technical field.
• 10+ years of extensive professional experience in software development, with a significant focus on Java.
• Proven experience in a technical leadership or lead developer role, guiding teams and driving technical initiatives.
• Strong proficiency in Java, including Java 8+ features, Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security), and related ecosystems.
• Demonstrable experience with Python for scripting, automation, data handling, or backend development.
• Deep understanding of object‑oriented design principles, design patterns, data structures, and algorithms.
• Experience with relational and NoSQL databases (e.g., PostgreSQL, MySQL, Cassandra, MongoDB, Redis).
• Proficiency in designing and implementing RESTful APIs and microservices architectures.
• Experience with message queues/brokers (e.g., Kafka, RabbitMQ, ActiveMQ).
• Strong understanding of distributed systems and cloud‑native application development (e.g., Docker, Kubernetes).
• Familiarity with CI/CD pipelines and tools (e.g., Jenkins, GitLab CI, Azure DevOps).
• Excellent problem‑solving, analytical, and debugging skills.
• Familiarity with test automation frameworks- Junit, Mockito, PyTest
• Strong communication, collaboration, and leadership skills, with the ability to influence and mentor.

Preferred

• Experience with cloud platforms such as AWS, Azure, or GCP.
• Familiarity with frontend technologies (e.g., React, Angular, Vue.js) is a plus.
• Experience with performance tuning and optimization of large‑scale systems.
• Prior experience in Agile/Scrum environments including sprint planning and retrospective.
• Experience with Appian workflow development or integration.
• Prior experience FinTech preferred.

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

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

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