Full Stack Developer (Expert) Java & Cloud Migration

Are you a
seasoned technology professional who loves solving complex problems, leading
teams, and turning legacy systems into modern, high-performing solutions? We're
looking for a Full Stack Developer (Expert) to help drive an exciting mainframe
modernisation initiative, migrating legacy applications into modern Java and
cloud-based environments.

This is your
opportunity to combine technical expertise, strategic thinking, Agile
leadership, and cloud innovation while working on complex, enterprise-level
systems.

What You'll Be Doing:

• Lead the modernisation and migration
  of legacy mainframe applications to modern Java-based solutions.
  
• Help design and refine migration
  strategies for converting COBOL and PL/1 applications into Java.
  
• Analyse existing systems, identify
  dependencies, assess risks, and develop practical migration plans.
  
• Work with cloud and infrastructure
  teams to map legacy components to suitable cloud services.
  
• Drive the delivery of complex
  projects, keeping timelines, budgets, quality, and business requirements
  on track.
  
• Lead and support Agile feature teams,
  encouraging collaboration, transparency, and continuous improvement.
  
• Work closely with stakeholders,
  Product Owners, developers, testers, and external suppliers to turn
  business requirements into workable solutions.
  
• Oversee system integration, testing,
  parallel runs, implementation, and quality assurance.
  
• Ensure solutions meet performance,
  security, data integrity, and compliance requirements.
  
• Troubleshoot complex technical issues
  and provide second-level support when required.
  
• Champion DevOps automation, modular
  architecture, and efficient development practices.
  
• Keep documentation up to date and
  share knowledge through coaching, training, and knowledge-transfer
  sessions.
  
• Monitor migrated
  applications and continuously improve cloud performance, cost, and efficiency.
  

Requirements

You'll need a
strong technical foundation, combined with the confidence to guide teams and
make important architectural and delivery decisions.

Essential
technical experience:

• Strong Java development skills,
  including object-oriented programming, multithreading, collections,
  generics, and exception handling.
  
• Extensive experience with Java
  frameworks, particularly Spring, Spring MVC, and Spring Boot.
  
• At least 10 years' experience in IT,
  Software Development, or DevOps, with 10+ years in a relevant programming
  language.
  
• Strong project delivery and project
  management capabilities.
  
• Experience with Agile methodologies
  and managing work across multiple Agile teams.
  
• Knowledge of system integration,
  requirements analysis, technical planning, and solution design.
  
• Experience coordinating development
  and support environments.
  
• Proficiency in Agile tools such as
  Jira, Confluence, X-Ray, and Bitbucket.
  
• Experience with DevOps, transition
  management, and problem, incident, and change management.
  
• Resource planning, budget management,
  and technical team leadership experience.
  
• Previous exposure to a finance
  function, either directly or through supporting a finance-focused team.
  

Additional
technical experience that will give you an edge:

• AWS or Azure cloud architecture and
  services.
  
• Serverless development, including AWS
  Lambda.
  
• Kafka, streaming services, and
  publish/subscribe (Pub/Sub) technologies.
  
• Docker, Kubernetes, and OpenShift.
  
• Mainframe technologies and databases,
  including COBOL, PL/1, DB2, IMS, and J2EE.
  
• Mainframe-to-Java code conversion
  tools such as Astadia, Heirloom, or BlueAge.
  
• Cloud-based architecture for legacy
  application migration.
  
• Testing frameworks such as JUnit or
  TestNG, along with automated and integration testing.
  
• Hibernate or other ORM frameworks.
  
• Modern front-end technologies such as
  Angular, React, or Vue.js.
  
• Performance optimisation,
  debugging, high availability, and security best practices.
  

Qualifications
& Certifications

• A relevant IT, Business, or
  Engineering qualification.
  
• At least one recognised advanced
  Scrum or Agile certification, such as Professional Scrum Master II,
  Advanced Certified ScrumMaster, Certified SAFe Advanced Scrum Master,
  Leading SAFe Agilist, or Scaled Professional Scrum.
  
• A Scrum Master certification and
  project management qualification would be advantageous.
  

Benefits

• Work on a complex, global-scale
  technology modernisation initiative.
  
• Collaborate with international teams
  and experienced technology professionals.
  
• Enjoy a flexible working model
  combining remote and on-site work.
  
• Benefit from a flexible working
  arrangement of 1,960 hours over a 12-month period.
  
• Be part of a fast-paced, energetic
  environment that values innovation and teamwork.
  
• Gain exposure to modern cloud
  technologies, enterprise architecture, and large-scale migration projects.