Java/Python & Flink/Redis Application Development Analyst

Citigroup Inc.; Pune District; On-site; INR 1,500,000 - 2,000,000; Full time

Job summary

Citigroup Inc. is looking for a Senior Polyglot Engineer in Pune District, India. The successful candidate will design and maintain Citi's data platform, focusing on complex streaming solutions and scalable microservices. Ideal applicants will have over 4 years of software development experience, a strong grasp of microservices architecture, and proficiency in languages like Java and Python. The position offers a collaborative environment and opportunities to innovate in data technologies.

Qualifications

• 4+ years of experience in software development, focusing on Microservices and data pipeline architectures.
• Proficiency in core languages/frameworks: Java, Python, Angular, React.
• Experience with real-time stream processing, including Flink SQL and DataStream API.

Responsibilities

• Analyze system requirements and program interactions in microservices architecture.
• Contribute to design for analytical and streaming services.
• Work on performance improvements in microservices environments.

Skills

Microservices architecture

Apache Flink

Java

Python

Redis

Kubernetes

Continuous Integration and Continuous Delivery

Education

Bachelor’s degree or equivalent experience

Tools

Git

Jenkins

TeamCity

SonarQube

Job description

Fixed Income (FI) is the primary source of capital for corporations, governments, and nonprofits, providing liquidity and innovative solutions globally across the credit, municipal, and securitized markets. FI’s activities include origination, structuring, investing, lending, and market making and it offers a variety of products including, but not limited to, corporate bonds, emerging markets bonds, asset backed securities, mortgage backed securities, collateralized loan obligations (CLOs), municipal securities, agency securities, short term interest rate products, loans, letters of credit, and derivative instruments.

TheFixed Income Data Platform Teamis the backbone of Fixed Income's mission, providing the low latency, high concurrency, scalability, and availability needed to power our groundbreaking solutions. Our Data Platform Engineering team operates at the cutting edge, researching, adapting, and deploying the latest open-source data platforms to meet Citi's unique needs. We're a collaborative group that thrives on technical challenges and the satisfaction of building highly performant systems.

We're seeking a passionate, highly skilled, andversatile Senior Polyglot Engineerto join our talented team. This individual will be instrumental in designing, building, and maintaining Citi's next-generation data platform, specifically focusing oncomplex streaming solutions, robust data pipeline architectures, and scalable microservices, targeted for quantitative scientists and traders to quickly iterate on and deploy analytical and trading tools. We value engineers who can seamlessly navigate and contribute across diverse technology stacks.

Responsibilities

• Analyzes complex system requirements, including identifying program interactions and appropriate interfaces between impacted components and sub-systems withinmicroservices architectures and distributed data pipelines.
• Participate actively in Sprint Planning, Tasking, and Estimation of assigned work for the platform, demonstrating a clear understanding of cross-stack dependencies.
• Contribute tocomponent and service design for analytical and streaming services, considering scalability and performance across varied technologies.
• Work on bug resolution and application improvements, with a strong focus on performance, maintainability, and code quality instreaming and microservices environments.
• Contribute to the strategic planning, setup, and maintenance of Flink and Redis infrastructure, including evaluating new streaming frameworks and caching solutions.
• Flexibly contribute across the full stack, adapting to diverse programming languages and frameworks as project needs evolve.
• May occasionally work a non-standard shift including nights and/or weekends and/or have on-call responsibilities.
• Stay abreast with new trends in open-source tooling and champion innovative solutions that could help improve the efficiency of the Fixed Income platform community.
• Work closely with business stakeholders to help them leverage platform capabilities and develop efficient analytical tools.
• Continuously seek to automate manual touchpoints in the technology delivery pipeline.

Recommended Qualifications

• 4+ years of demonstrable and relevant experience in software development, with a strong emphasis on designing and implementing Microservices and complex streaming/data pipeline architectures.
• Proven proficiency in at least two of the following core languages/frameworks: Java (strong focus), Python, Angular, React.
• Deep expertise and hands‑on experience with Apache Flink for real‑time stream processing, including Flink SQL, DataStream API, state management, and comprehensive knowledge of Flink infrastructure setup, maintenance, enhancement, and migration strategies. Experience in evaluating and integrating alternative streaming frameworks is highly valued.
• In‑depth knowledge and practical experience with Redis, encompassing not only data structures, caching patterns, and pub/sub mechanisms but also expertise in Redis cluster setup, maintenance, enhancement, and migration strategies for high‑performance applications.
• Extensive hands‑on experience with Microservices architecture, design patterns, and deployment strategies.
• Experience with Large Language Models (LLMs), including fine‑tuning, prompt engineering, and integrating LLMs into applications, is a plus.
• Extensive hands‑on experience with data distribution platforms like Apache Kafka, and various big data storage/querying systems (e.g., Trino, Pinot, Druid, Ignite) for low‑latency access indistributed data pipelines.
• Experience with the design and implementation of cloud‑native applications and deployment via Kubernetes / OpenShift, specifically for managingmicroservices and streaming data services.
• Good understanding of data modeling, partitioning, and sharding of huge data sets for optimal performance inlarge‑scale, distributed data platforms.

Software Engineering Skills

• Experience working on a Continuous Integration and Continuous Delivery (CI/CD) environment, with a strong focus on rapid and reliable deployment ofmicroservices and streaming componentsand data access layers. Familiarity with TeamCity, SonarQube, and Jenkins.
• Experience with the SDLC lifecycle and in working within an Agile environment, adapting to fast‑paced data requirements.
• Demonstrable understanding and experience of engineering best practices: design patterns, coding standards, code review, and robust unit/integration testing across various languages.
• Strong experience with standard CI tools (Jenkins, TeamCity, SonarQube, Git).

Education

• Bachelor’s degree/University degree or equivalent experience.

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.

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