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 a Backend 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
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