Java and Python Developer

Citibank (Switzerland) AG; Pune District; Hybrid; INR 900,000 - 1,800,000; Full time

Job summary

Citibank (Switzerland) AG is seeking a Software Development Engineer (C10) for a hybrid role in Pune, India. The position focuses on building scalable backend services using Java (Spring Boot) and Python (FastAPI/Flask/Django), with emphasis on RESTful APIs, data processing, and microservices.

The role covers SDLC in an Agile setup, including automated testing, code reviews, and production support. Candidates should be proficient in Java, Python, CI/CD, and containerized deployments with

Qualifications

• 2–4 years of professional software engineering experience with Python and Java.
• Experience designing RESTful APIs and using OpenAPI/Swagger specifications.
• Familiarity with CI/CD, containerization, and cloud basics (Docker/Kubernetes).

Responsibilities

• Develop, maintain, and enhance backend services in Java and Python.
• Build scalable microservices and RESTful APIs with robust tests.
• Participate in CI/CD, containerization, and deployment automation.
• Collaborate in Agile ceremonies and peer reviews.
• Troubleshoot production issues and monitor system health.

Skills

Python

Java

RESTful APIs

Spring Boot

Docker

Kubernetes

Kafka

PostgreSQL

JUnit/PyTest

OpenAPI/Swagger

Education

Bachelor’s degree in CS/CE/IT or equivalent

Tools

Git

Maven/Gradle

Pip/Poetry

OpenAPI/Swagger

Jenkins

Job description

## Java and Python DeveloperApply: Hybrid: Pune Maharashtra India: Full time: Posted Today: 26997765We are seeking a proactive, detail-oriented **Software Development Engineer (C10)** with strong hands-on development expertise in both **Python** and **Java**. In this role, you will be part of a collaborative, high-impact engineering team responsible for designing, developing, and enhancing scalable backend services, data pipelines, and microservices supporting mission-critical enterprise platforms.As a C10 Applications Development Analyst, you will work across the full Software Development Life Cycle (SDLC) under Agile methodologies—participating in requirement analysis, system architecture discussions, hands-on coding, automated testing, code reviews, and production support.**Key Responsibilities****1. Software Design & Development*** Develop, maintain, and enhance robust, scalable backend applications using **Java (Spring Boot / Core Java)** and **Python (FastAPI / Flask / Django / Scripting / Data Processing)**.* Build clean, secure RESTful APIs, microservices, and asynchronous event-driven integrations (e.g., Apache Kafka, RabbitMQ, or JMS).* Optimize application performance, throughput, memory management, and database query execution.**2. Quality Assurance & Engineering Best Practices*** Write clean, modular, and maintainable code adhering to enterprise coding standards and SOLID principles.* Develop comprehensive automated unit, integration, and component tests using frameworks such as **JUnit, Mockito, PyTest, or Unittest**.* Maintain high code coverage and resolve static code analysis findings (e.g., SonarQube, security vulnerabilities).**3. CI/CD & DevOps Automation*** Integrate applications with modern CI/CD pipelines (e.g., GitHub Actions, Jenkins, Tekton, Harness).* Containerize services using **Docker** and support deployments onto container orchestration platforms (e.g., Kubernetes / Red Hat OpenShift).* Participate in environment setup, automated deployment validation, and release management.**4. Collaboration & Agile Delivery*** Actively participate in Agile ceremonies including Sprint Planning, Daily Standups, Backlog Refinement, and Retrospectives.* Collaborate with business analysts, technical leads, UI/Frontend engineers, database administrators, and QA teams.* Conduct constructive peer code reviews and contribute to technical documentation (architecture diagrams, API specs in OpenAPI/Swagger).**5. Production Support & Operational Excellence*** Assist in triage, root cause analysis (RCA), and remediation of Level 3 production issues.* Monitor application health and diagnostics using observability tools (e.g., Prometheus, Grafana, Splunk, OpenTelemetry).**Technical Qualifications & Skill Requirements****Core Programming & Frameworks*** **Python:** Strong proficiency in Python 3.x, data structures, asynchronous programming, scripting, and web frameworks (FastAPI, Flask, or Django) or data manipulation libraries (Pandas, NumPy).* **Java:** Solid foundational knowledge of Java 11/17+, OOP design patterns, multithreading, concurrency, collections, and the **Spring / Spring Boot** ecosystem (Spring MVC, Spring Data, Spring Security).**API & Integration*** Practical experience designing and implementing **RESTful APIs** with OpenAPI/Swagger specifications.* Familiarity with message brokers and streaming platforms (e.g., **Kafka**, ActiveMQ, or IBM MQ).**Databases & Persistence*** Experience with relational databases (**PostgreSQL, Oracle, SQL Server, or MySQL**), including schema design, indexing, and complex SQL queries.* Exposure to ORM frameworks (Hibernate/JPA, SQLAlchemy) and/or NoSQL datastores (MongoDB, Redis, Elasticsearch).**DevOps, Cloud & Tooling*** Hands-on experience with version control tools (**Git / GitHub / Bitbucket**).* Familiarity with build tools such as **Maven / Gradle** (Java) and **pip / poetry / uv** (Python).* Basic understanding of **Docker, Kubernetes/OpenShift**, and cloud fundamentals (AWS, GCP, or Azure).* Knowledge of automated testing frameworks (JUnit, PyTest) and CI/CD tools.**Educational Background & Experience*** **Education:** Bachelor’s degree in Computer Science, Computer Engineering, Information Technology, or related quantitative field (or equivalent practical experience).* **Experience:** Approximately **2-4 years** of professional software engineering experience with demonstrable proficiency in both Python and Java.* **Certifications (Optional / Plus):** + Oracle Certified Professional: Java Programmer + Cloud certifications (AWS Solutions Architect/Developer Associate, Google Cloud Certified) + Kubernetes certifications (CKAD)**Professional & Behavioral Competencies*** **Analytical Problem Solving:** Strong critical thinking skills with an ability to debug complex issues across hybrid Java/Python architectures.* **Communication:** Clear verbal and written technical communication skills; comfortable articulating design trade-offs to both technical and non-technical stakeholders.* **Teamwork & Ownership:** Self-driven, collaborative mindset with an emphasis on accountability, continuous learning, and adaptability in a fast-paced environment.**Education:*** Bachelor’s degree/University degree or equivalent experience This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.