Backend Engineer – Core Java | Salary: ₹8 LPA to ₹12 LPA

Winzons; India; On-site; INR 4,000,000 - 6,500,000; Full time

Job summary

Xponentium in Bangalore is seeking a Senior Core Java Backend Developer to join the engineering team working on CME Group's core systems. This pure backend role concentrates on highly concurrent, low-latency Java code and deep JVM optimization.

You will own backend modules from architectural design to production challenges, build REST APIs with Spring Boot, and mentor junior engineers while collaborating across teams to deliver reliable, scalable services.

Qualifications

• Bachelor’s degree in computer science or related field required.
• 5+ years of total professional experience.
• Experience as a pure backend developer only; frontend-focused not suitable.
• Hybrid work arrangement Bengaluru location.

Responsibilities

• Own backend modules from design to production challenges.
• Develop high‑performance, multi-threaded Java code for low latency.
• Build REST APIs and microservices with Spring Boot / Spring Data JPA.
• Write optimized SQL queries and tune DB performance.
• Mentor junior developers and collaborate across teams.

Skills

Core Java (Java 8-17)

Multi-threading & Concurrency

Spring Boot

Spring Data JPA

SQL Fundamentals

Microservices Architecture

CI/CD

Docker

Kubernetes

Education

Bachelor's Degree in Computer Science or related field

Tools

Docker

Kubernetes

Spring Boot

Spring Data JPA

Job description

Company Name: Xponentium

Job Role: Backend Engineer - Java

Work Type: Full-Time / Hybrid

Experience: 6-9 Years

Qualification: Bachelor’s Degree in Computer Science or related field

Location: Bangalore

Role Overview

We are seeking a highly skilled Senior Core Java Backend Developer to join the engineering team at CME Group in Bangalore. This is a "Pure Backend" engineering role focused on the heart of CME's high-frequency trading and matching systems. You will not be building user interfaces; instead, your primary mandate will be writing highly concurrent, multi-threaded Java code designed for extreme throughput and low latency.

You will take true ownership of your project deliverablesfrom architectural design to solving complex production challenges. We are looking for engineers who do not just rely on frameworks, but deeply understand JVM internals, memory management, and how to optimize SQL queries beyond basic ORM usage.

Key Responsibilities (Ownership Expectations)

• System Ownership : Take full responsibility for specific backend modules. You must be able to describe the architecture, the code you wrote, the production-level challenges you faced, and how you delivered your specific piece of the platform.
• High-Performance Code : Design and develop highly concurrent, multi-threaded applications using Core Java (Java 8 to 17). Handle performance optimization in high-traffic, low-latency environments.
• API & Microservices Architecture : Build end-to-end REST APIs and microservices from scratch using Spring Boot and Spring Data JPA.
• Database Optimization : Write complex SQL queries (including aggregations) and optimize database performance natively, without relying purely on ORMs like Hibernate.
• Mentorship & Collaboration : Mentor junior developers on deliverables and collaborate across teams to solve complex scenario-based architectural problems.

Mandatory Requirements & Logistics

• Experience : Strictly 5+ years of total professional experience.
• Profile Constraint : Candidates must have worked as a "Pure Backend Developer" for their entire work experience. Frontend-heavy or Full-Stack profiles will be immediately rejected.
• Notice Period : Maximum 21 days (Strictly enforced).
• Location : Bangalore (Hybrid - 3 days per week from the office).

Technical Skill Depth Requirements

• Core Java (Java 8 to 17) & Collections : OWNERSHIP level required. Must have hands-on experience using modern features like Streams/Lambdas in recent projects.
• Multi-threading & Concurrency : OWNERSHIP level required. Clear experience writing multi-threaded code and handling performance
• Spring Boot & Spring Data JPA : HANDS-ON level required.
• SQL Fundamentals : HANDS-ON level required.
• Microservices Architecture : EXPOSURE required (e.g., breaking down monoliths, service discovery/Eureka).
• CI/CD, Docker & Kubernetes : EXPOSURE required.