Senior Java Engineer – Spring Boot (onsite) Job ID: 385859

HireOn LLC.; Lahore; On-site; PKR 2,009,000 - 3,348,000; Full time

Job summary

HireOn is recruiting on behalf of a leading client in Lahore for a Backend Engineer (Java Spring Boot). The role focuses on building scalable backend services, designing RESTful APIs, and applying Clean Architecture in a fast-paced environment.

The candidate will own features end-to-end, collaborate with cross-functional teams, and contribute to performance, security, and reliability of transaction-heavy systems.

Qualifications

• 3+ years of backend development experience with Java & Spring Boot.
• Strong expertise in Spring Boot, Spring MVC, Spring Security.
• Advanced SQL skills with MySQL (optimization, indexing, tuning).
• Hands-on experience with Liquibase.
• Experience with Redis caching.
• Experience with RabbitMQ / event-driven architecture.
• Solid understanding of concurrency, scalability, and system performance.
• Debugging and problem-solving skills.

Responsibilities

• Design, develop, and maintain scalable backend services using Java 17 and Spring Boot.
• Build robust RESTful APIs with versioning, validation, and error handling.
• Implement Clean Architecture with strong domain separation.
• Follow modular and layered architectural patterns.
• Own features end-to-end from design to production support.

Skills

Java

Spring Boot

REST APIs

SQL

Caching

Security

DevOps

Tools

Docker

Liquibase

Redis

RabbitMQ

Spring Security

CI/CD

Cloud Platforms

Job description

Senior Java Engineer – (Spring Boot)

Location: Lahore PIA Road Office, Pakistan (Onsite)
Employment Type: Full-Time
Hiring Partner: HireOn

Job Summary

HireOn is a recrutiment agency, and recruiting on behalf of a leading client in Lahore seeking aBackend Engineer (Java Spring Boot) to build and scale high-performance, transaction-heavy backend systems. This role requires strong ownership, deep backend expertise, and the ability to design resilient, secure, and scalable services in a fast-paced environment.

Core Responsibilities Backend Development & System Design

• Design, develop, and maintain scalable backend services using Java 17 and Spring Boot
• Build robust RESTful APIs with versioning, validation, and error handling
• Implement Clean Architecture principles with strong domain separation
• Follow modular and layered architectural patterns
• Own features end-to-end from design to production support

Database & Data Management

• Design and optimize MySQL schemas, queries, and indexing strategies
• Manage schema versioning and database changes using Liquibase
• Execute reliable database migrations across environments
• Ensure data integrity and transactional consistency in concurrent systems

Performance, Caching & Messaging

• Implement caching strategies using Redis
• Develop asynchronous workflows using RabbitMQ or messaging systems
• Build and manage background jobs and schedulers
• Identify and resolve performance bottlenecks and race conditions

Security, Reliability & Monitoring

• Implement backend security using Spring Security
• Apply authentication and authorization best practices
• Maintain logging, monitoring, and auditing for system reliability

DevOps & Deployment

• Work with Docker and Docker Compose
• Contribute to CI/CD pipelines and automation
• Manage environment configurations across staging and production
• Support deployment and maintenance workflows

Collaboration & Engineering Excellence

• Participate in code reviews and architectural discussions
• Collaborate with frontend, QA, mobile, and DevOps teams
• Improve code quality, documentation, and development standards

Required Skills & Experience

• 3+ years of backend development experience with Java & Spring Boot
• Strong expertise in:
  • Spring Boot, Spring MVC, Spring Security
  • REST API design and development
• Advanced SQL skills with MySQL (optimization, indexing, tuning)
• Hands‑on experience with Liquibase
• Experience with Redis caching
• Experience with RabbitMQ / event-driven architecture
• Solid understanding of concurrency, scalability, and system performance
• Strong debugging and problem-solving skills
• Familiarity with AI-assisted development tools like Claude

Nice to Have

• Experience in FinTech, POS, Retail, or high-transaction systems
• Exposure to microservices or distributed systems
• Familiarity with Jakarta EE, Lombok
• Experience with CI/CD tools and pipelines
• Knowledge of cloud platforms (AWS, GCP, Azure)
• Experience with internationalization or multi-region deployments
• Basic shell scripting