Consultant - Java Backend

Rakuten; Bengaluru; On-site; INR 1,500,000 - 2,500,000; Full time

Job summary

Rakuten is looking for a skilled Java expert to fill the role of SSE-II-Java in Bengaluru. In this critical position, you will design and implement high-performance systems and drive technical excellence. Your responsibilities will include architecting scalable solutions using modern technologies and leading cross-functional teams.

The ideal candidate will have extensive experience in Java and system design, as well as strong leadership and mentoring skills. Join us in shaping high-quality solutions that meet our customers' needs.

Qualifications

• Hands-on experience in Java development with strong focus on system design and architecture.
• Deep understanding of Java, including multithreading and performance optimisation.
• Experience with Big Data tools and frameworks like Hadoop and Spark.

Responsibilities

• Lead the design of scalable systems using Java and microservices.
• Write maintainable code and ensure adherence to best practices.
• Design and optimise database schemas for MongoDB.

Skills

Java

System Design

Microservices Architecture

Spring Boot

Big Data Technologies

Tools

MongoDB

Hadoop

Spark

Kafka

Docker

Kubernetes

Job description

We are seeking a highly skilled and experienced Java expert to join our team as an SSE-II-Java. In this role, you will be responsible for designing and implementing scalable, high-performance systems while driving technical excellence across the organisation. You will work closely with cross-functional teams to architect, design, and deliver robust solutions using cutting‑edge technologies. This is a hands‑on role that requires deep expertise in Java, system design, and modern software development practices.

Responsibilities

• Architect and Design Systems: Lead the design and architecture of scalable, distributed, and high‑performance systems using Java, Spring Boot, and microservices.
• Hands‑on Development: Write clean, efficient, and maintainable code in Java, ensuring adherence to best practices and design principles.
• System Design: Create detailed system designs, including high‑level architecture, component diagrams, and data flow, to solve complex business problems.
• Microservices Development: Design and implement microservices‑based architectures, ensuring scalability, fault tolerance, and high availability.
• Big Data Integration: Work with big data technologies to design and implement data pipelines, processing frameworks, and storage solutions.
• Database Expertise: Design and optimise database schemas and queries for MongoDB and other NoSQL/relational databases.
• Technical Leadership: Provide technical guidance and mentorship to engineering teams, ensuring adherence to design principles and coding standards.
• Collaboration: Work closely with product managers, stakeholders, and other engineering teams to understand requirements and deliver high‑quality solutions.
• Performance Optimisation: Identify and resolve performance bottlenecks in applications and systems.
• Innovation: Stay updated with the latest trends and advancements in technology, and recommend their adoption where appropriate.

Requirements

• Proven Experience: Hands‑on experience in Java development, with a strong focus on system design and architecture.
• Java Expertise: Deep understanding of Java, including multithreading, concurrency, and performance optimisation.
• Spring Boot: Extensive experience with Spring Boot and related frameworks for building enterprise‑grade applications.
• Microservices Architecture: Strong knowledge of microservices design patterns, RESTful APIs, and service orchestration.
• System Design: Expertise in designing scalable, distributed systems with a focus on high availability and fault tolerance.
• Big Data Technologies: Hands‑on experience with Big Data tools and frameworks (e. g., Hadoop, Spark, Kafka, etc.).
• MongoDB: Proficiency in working with MongoDB, including schema design, indexing, and query optimisation.
• Design Principles: Strong understanding of software design principles, including SOLID, DRY, and design patterns.
• Hands‑on Coding: Ability to write high‑quality, production‑ready code and perform code reviews.
• Problem‑Solving: Excellent analytical and problem‑solving skills with a focus on delivering scalable solutions.
• Collaboration: Strong communication and interpersonal skills to work effectively with cross‑functional teams.
• Experience with cloud platforms (e. g., AWS, Azure, GCP) and containerisation technologies (e. g., Docker, Kubernetes).
• Familiarity with CI/CD pipelines and DevOps practices.
• Knowledge of event‑driven architectures and messaging systems (e. g., RabbitMQ, Kafka).
• Experience with monitoring and logging tools (e. g., Prometheus, Grafana, ELK stack).