Backend Developer

Roles and responsibilities

Experience Level: 5-10 years

Industry: preferably Banking

Job Overview:

We are looking for a highly skilled Full Stack Java Developer to join our team. The ideal candidate will have extensive experience in designing and developing high-quality Java microservices and Enterprise Edition (EE) applications. You will play a key role in building scalable, secure, and efficient solutions.

Key Responsibilities:

• Design, develop, maintain, and support Java-based backend services and APIs.
• Analyze requirements and define technical solutions.
• Implement Test Driven Development (TDD) for middleware services with over 80% code coverage through JUnit test cases.
• Ensure bug-free application releases by maintaining high code quality.
• Address all penetration testing scenarios to ensure application security.
• Implement and maintain security measures to protect user data and maintain application integrity.
• Stay up to date on security vulnerabilities and industry standards for mitigation.
• Collaborate with cross-functional teams to deliver projects on time and with high quality.
  

Required Skills & Technologies:

Core Java Skills:

• Strong knowledge of OOP, Design Patterns, Multithreading, Java 8+, Java 21, Lambda, Stream API, REST services.
• Familiarity with Kotlin and Groovy is a plus.
  

Spring Framework:

• Expertise in Spring Boot, including annotations, Gradle, Maven, Spring JPA, Spring AOP, Spring Security, and JUnit.
  

Microservices Architecture:

• Experience with Service Mesh, Service Discovery, and Cloud Config using Spring Cloud.
  

Databases:

• Proficiency in MySQL, PostgreSQL, Oracle, and SQL Server.
  

Development Tools:

• Hands-on experience with IntelliJ, STS, Eclipse, SoapUI, Postman, Git, Confluence, and Jira.
  

Cloud & Containers:

• Familiarity with Docker, Kubernetes, AWS, and Azure cloud environments.
  

Experience & Soft Skills:

• 5-10 years of experience in Java development.
• Experience in platform/hosting support functionality.
• Prior experience in the banking industry is preferred.
• Strong analytical, problem-solving, and troubleshooting skills.
• Excellent communication and teamwork abilities.
• Ability to work independently and manage multiple tasks efficiently.
• A proactive mindset towards learning new technologies and optimizing existing processes.
  

Good to Have:

• Knowledge of API Gateways (Kong, CA API GW, Azure API GW, AWS API GW).
• Experience with Agile methodologies (Scrum, Kanban, Test Driven Development).
• Familiarity with DevOps tools like Git, Gradle, Maven, Azure DevOps, and CI/CD pipelines (GitHub, Azure).

Desired candidate profile

Server-Side Logic and Application Development

1. Building and Maintaining APIs

   • Developing and maintaining APIs (Application Programming Interfaces) that allow the frontend of an application to communicate with the backend.
   • APIs may be RESTful or GraphQL, depending on the project requirements.

2. Writing Server-Side Code

   • Implementing business logic, processing data, and handling requests from clients (frontend applications).
   • Writing backend code in server-side programming languages like Node.js, Java, Python, Ruby, C#, PHP, or Go.

3. Integration with Frontend

   • Collaborating with frontend developers to ensure smooth communication between the frontend and backend through APIs or other methods.
   • Handling data requests and responses, ensuring that the frontend receives the correct data and that users' requests are properly processed.

Database Management

1. Database Design and Management

   • Designing and managing databases that store application data, such as user information, transaction records, or any other data the application needs.
   • Working with relational databases (e.g., MySQL, PostgreSQL) or NoSQL databases (e.g., MongoDB, Cassandra) depending on the application requirements.

2. Database Queries and Optimization

   • Writing efficient database queries to retrieve, update, delete, or insert data into the database.
   • Optimizing queries and database structures to ensure high performance and scalability, especially as the application grows.

Authentication and Security

1. Implementing Authentication

   • Implementing user authentication mechanisms, such as OAuth, JWT (JSON Web Tokens), or session-based authentication, to ensure secure login and access control.
   • Managing user accounts, passwords, and roles to determine access levels within the application.

2. Ensuring Data Security

   • Applying security best practices to prevent attacks such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF).
   • Ensuring secure data transmission, often using HTTPS and implementing encryption techniques for sensitive data.

3. Data Backup and Recovery

   • Setting up backup systems for databases to ensure data is protected in case of system failures.
   • Implementing disaster recovery strategies to restore data quickly.