IOS Developer

Citigroup Inc.; Chennai District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Citigroup Inc. in Chennai, India, seeks an experienced Digital Software Engineer to design, develop, test, and maintain high-throughput microservices using Java/Spring Boot.

You will build robust RESTful APIs, implement event-driven pipelines with Kafka/JMS, and ensure data integrity with Oracle and MongoDB. The role emphasizes CI/CD automation, containerization with Docker/Kubernetes, and strong focus on code quality, testing (JUnit 5/Mockito), and observability with OpenTelemetry, Prometheus,

Qualifications

• 4-8 years in an Apps Development role with demonstrated execution.
• Strong analytical and quantitative skills; data driven and results-oriented.
• Experience in running high traffic, distributed, cloud-based services.
• Experience in affecting large culture change.
• Experience leading infrastructure programs.
• Skilled at working with third party service providers.
• Excellent written and oral communication skills.

Responsibilities

• Design, develop, test, deploy, and maintain high-throughput, low-latency microservices using Java (17/21), Spring Boot, and cloud-native frameworks.
• Build and document robust RESTful APIs and event-driven interfaces according to enterprise API standards (OpenAPI/Swagger).
• Design asynchronous workflows and event streaming pipelines using Kafka or JMS.
• Implement efficient data persistence with Oracle and MongoDB, ensuring indexing and transactional integrity.
• Enforce clean code, SOLID, and TDD/BDD practices across teams.
• Create unit, integration, and contract tests with JUnit 5 and Mockito.
• Build and optimize CI/CD pipelines; containerize services with Docker and Kubernetes/OpenShift.
• Incorporate observability with OpenTelemetry, Micrometer, Prometheus, Grafana, and Splunk/ELK.
• Participate in Scrum/Kanban ceremonies; assist in production incident triage and remediation.

Skills

Microservices Development

API Architecture

Event-Driven Messaging

Database & Data Management

Code Quality & Best Practices

Automated Testing

CI/CD & Cloud

Observability & Reliability

Agile Participation

Production Support & Incident Mgmt

Analytical Skills

Distributed Cloud Services

Infrastructure Leadership

Communication Skills

Education

Bachelor’s Degree or equivalent

Tools

Docker

Kubernetes/OpenShift

OpenTelemetry

Prometheus

Grafana

Splunk/ELK

JUnit 5

Mockito

OpenAPI/Swagger

Kafka

JMS

Oracle

MongoDB

Job description

Key Responsibilities

Design & Development

• Microservices Development:Design, develop, test, deploy, and maintain high-throughput, low-latency microservices usingJava (17/21),Spring Boot, and cloud-native frameworks.
• API Architecture:Build and document robust RESTful APIs and event-driven interfaces adhering to enterprise API standards, OpenAPI/Swagger specifications,
• Event-Driven & Messaging Systems:Design asynchronous workflows and event streaming pipelines usingApache Kafka or JMS.
• Database & Data Management:Implement efficient data persistence layers using relational databases ( Oracle) and NoSQL stores (MongoDB), ensuring optimized indexing, query execution, and transactional integrity.

Engineering Excellence & DevOps

• Code Quality & Best Practices:Enforce clean code principles, SOLID design patterns, domain-driven design (DDD), and test-driven development (TDD/BDD).
• Automated Testing:Author comprehensive unit, integration, and contract tests utilizing JUnit 5, Mockito maintaining high automated test coverage (>85%).
• CI/CD & Cloud Integration:Build and optimize CI/CD pipelines and containerize services usingDockerandKubernetes / OpenShift.
• Observability & Reliability:Integrate logging, metrics, and tracing instrumentation into microservices using frameworks such as OpenTelemetry, Micrometer, Prometheus, Grafana, and Splunk/ELK.

Collaboration & Leadership

• Agile Participation:Actively participate in Scrum/Kanban ceremonies (sprint planning, daily standups, backlog refinement, retrospectives).
• Production Support & Incident Management:Partner with Level 3 (L3) support teams for triage, root-cause analysis (RCA), and remediation of critical production incidents during release rollouts and business hours.

• 4-8 years in an Apps Development role. Demonstrated execution capabilities.
• Strong analytical and quantitative skills; Data driven and results-oriented
• Experience in running high traffic, distributed, cloud based services
• Experience in affecting large culture change
• Experience leading infrastructure programs
• Skilled at working with third party service providers
• Excellent written and oral communication skills

Education:

• Bachelor’s/University degree or equivalent experience

Technology

Digital Software Engineering

Full time

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.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.