Lead Full Stack Developer

Citi; New York (NY); Hybrid; USD 42,000 - 62,000; Full time

Job summary

Citi is hiring a Senior Lead Technical Java Developer with Python experience to design, develop, and deliver complex software solutions. You will lead architectural decisions, mentor engineers, and drive CI/CD practices while building scalable microservices and cloud-native applications.

The role emphasizes hands-on coding in Java, scripting in Python, and collaboration with cross-functional teams to ensure high-quality outcomes.

Qualifications

• 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.
• Strong proficiency in Java, including Java 8+ features, Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security).
• Demonstrable experience with Python for scripting, automation, data handling, or backend development.
• Experience with relational and NoSQL databases (PostgreSQL, MySQL, Cassandra, MongoDB, Redis).
• Proficiency in designing and implementing RESTful APIs and microservices architectures.
• Experience with message queues/brokers (Kafka, RabbitMQ, ActiveMQ).
• Strong understanding of distributed systems and cloud-native application development (Docker, Kubernetes).
• Familiarity with CI/CD pipelines and tools (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.

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.

Education

Bachelor's or Master's degree in Computer Science, Engineering, or related technical field

Tools

Java

Spring Framework

Python

REST APIs

Microservices

Docker

Kubernetes

Jenkins

GitLab CI

Azure DevOps

PostgreSQL

MySQL

Redis

Kafka

RabbitMQ

React

Angular

Vue.js

MongoDB

Cassandra

JUnit

Mockito

PyTest

Jenkins

Job description

Lead Full Stack Developer

Location(s):

Chennai, Tamil Nadu, India

Job Type:

Hybrid

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

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.

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