Mainframe Developer

Tiger Resourcing Group; London; On-site; GBP 50,000 - 75,000; Full time

Job summary

A leading technology staffing firm in London seeks a Java Developer to design and maintain Java-based applications while integrating with Mainframe systems. The ideal candidate will have 5-12 years of experience and strong knowledge of software development methodologies. You will work closely with stakeholders to gather requirements and ensure compliance with best practices in software development.

Qualifications

• 5-12 years of experience in software solution design.
• Solid understanding of Mainframe technologies.
• Hands-on experience with Linux/Unix Shell Scripting.

Responsibilities

• Design, develop, and maintain Java-based applications.
• Integrate and interface with Mainframe systems.
• Work closely with business stakeholders to gather requirements.

Skills

Proficiency in Java

Software Development Life Cycle

Excellent communication skills

Problem-solving skills

Agile methodology

Tools

Jenkins

SonarQube

Docker

Kubernetes

PostgreSQL

Job description

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• Design, develop, and maintain Java-based applications.
• Integrate and interface with Mainframe systems (COBOL, JCL, DB2, etc.).
• Write and maintain Linux shell scripts for automation, monitoring, and deployment tasks.
• Have rich knowledge of Software Development Life Cycle methodologies; excellent communication and interpersonal skills, capable of resolving complex issues and motivating teams to achieve peak performance.
• Create comprehensive architecture for software solutions and provide strategic direction throughout development. Design and develop high-performance, scalable, and reliable solutions using Java, Spring Boot, Microservices technologies.
• Work closely with business stakeholders to gather and analyze requirements, translating them into technical specifications and architectural designs.
• Convert visionary concepts into enterprise-wide systems.
• Coordinate with all stakeholders in architectural designs and software development.
• Ensure compliance with best practices and policies in software development. Perform code reviews and provide feedback to maintain code quality.
• Provide guidance for architectural planning, monitor teams, and offer technical mentorship to ensure successful project implementation.
• Create technical literature, such as training materials or sample code, to promote framework acceptance.
• Ensure system integrity through proper architectural designs and advise on security methods, implementing them as needed.
• Design and deploy Java applications, develop strategic, logical, and physical designs.
• Ensure products or projects are robust, scalable, and extensible.
• Apply Agile methodology effectively.
• Analyze user requirements to define business objectives and envisage system features and functionalities.
• Ensure application designs align with business goals and resolve technical issues proactively.
• Write well-designed, testable code, and conduct software analysis, programming, testing, and debugging.
• Support continuous improvement by investigating alternatives and technologies, presenting findings for architectural review.

Requirements

• Solid understanding of Mainframe technologies: COBOL, JCL, VSAM, DB2, CICS (based on project needs).
• Hands-on experience with Linux/Unix Shell Scripting (Bash, KornShell, etc.).
• Familiarity with batch jobs and scheduling tools such as Control-M, Autosys.
• Proficiency in Java, J2EE, Databases (Postgres), Web Services (REST, SOAP), Spring Boot, Spring MVC, Hibernate/JPA, API Gateway, Azure, and Microservices.
• 5-12 years of experience in designing software solutions using architecture design principles.
• Payment domain expertise and ability to lead teams, integrations, migrations, and create approaches.
• Experience with Angular and front-end technologies is a plus.
• Understanding of Kafka, PCF, Integration patterns, Security standards, Concurrency, Multi-threading, Collections, PostgreSQL, Azure, Docker, Kubernetes.
• High-energy, detail-oriented, proactive, and able to work independently under pressure.
• Strong problem-solving skills.
• Experience with API and Contract Testing using REST Assured, Postman, Swagger, SOAP UI, Groovy, Spring Cloud Contract.
• Knowledge of TDD methodology and unit testing with JUnit/XCTest.
• Experience with mocking frameworks such as Mockito, API Service Virtualization, OCMock.
• Static Code Analysis skills using SonarQube, Xcode Static Analyzer.
• Hands-on experience with Jenkins, PCF, or similar tools for automated build and test infrastructure.
• Proficiency in troubleshooting with Splunk, API tools like Swagger/Postman, and source control systems like Git.
• Intermediate knowledge of Maven, Redis, Oracle database, SQL, Unix commands, Shell scripting.
• Familiarity with tools like Sonar, DataDog/Dynatrace, GIT, SVN, Rally/Jira, CI/CD tools like Jenkins or Bamboo, and Splunk.
• Excellent verbal and written communication skills, with strong relationship-building, collaboration, and organizational skills.
• Proven experience in Agile methodology, SDLC, and project implementation, including debugging applications.