Senior Java Backend Developer

muSharp; Lahore; Hybrid; PKR 2,400,000 - 4,200,000; Full time

Job summary

muSharp is seeking a Senior Java Backend Developer to build and extend the Java core of an enterprise wealth management and investment platform. You will work on scalable REST APIs, authentication, and data modeling within a hybrid environment in Lahore, Pakistan.

The role requires 5+ years of Java backend experience, with Java 17+ and Spring Boot 3, and familiarity with Azure services and multi-tenant architectures.

Qualifications

• 5+ years of backend Java development experience.
• Experience building scalable REST APIs in multi-tenant environments.
• Proficiency with JWT, OAuth2/OpenID Connect and Entra ID.
• Experience with SQL Server and schema migrations.
• Familiarity with Azure Service Bus and Blob Storage.
• Enterprise-grade development practices and testing.

Responsibilities

• Build REST APIs in a large, multi-tenant Spring Boot / JPA codebase.
• Implement authentication and access control: OAuth2 / OIDC, JWT, roles.
• Design SQL Server schema changes and safe migration scripts.
• Integrate with other services, including REST sync with a Laravel module, Azure Service Bus and Blob Storage, and AI services.
• Write tests and review pull requests.

Skills

Java

REST API design

OAuth2 / OIDC

JWT

Spring Boot

OpenAPI / Swagger

SQL Server

Azure Service Bus

Blob Storage

Testing

Tools

QueryDSL

Spring AI

Swagger

Laravel

Job description

muSharp is looking for a Senior Java Backend Developer to build and extend the Java core of an enterprise wealth management and investment platform, including CRM, deal pipeline, and AI assistant capabilities.

The role requires strong hands-on backend engineering expertise, with a focus on scalable APIs, authentication and access control, database design, integrations, and enterprise-grade development practices.

Employment Type: Full-Time

Location: OPF Society, Lahore

Work Model: Hybrid

Experience: 5+ years – Java Backend Development

Reports To: Lead Architect

Must Have: Java 17+, Spring Boot 3

Key Responsibilities

• Build REST APIs in a large, multi-tenant Spring Boot / JPA codebase.
• Implement authentication and access control: Entra ID sign-in (OAuth2 / OIDC), JWT (RS256, JWKS), roles, and record-level visibility.
• Design SQL Server schema changes and safe migration scripts.
• Integrate with other services, including REST sync with a Laravel module, Azure Service Bus and Blob Storage, and AI services.
• Write tests and review pull requests.

Must Have

• JWT and OAuth2 / OpenID Connect (Entra ID or similar).
• Microsoft SQL Server or similar: schema design and query tuning.
• REST API design and OpenAPI / Swagger.

Nice to Have

• QueryDSL; Spring AI or LLM API integration.
• FinTech or wealth-management domain experience.