Full Stack Developer (Expert) (Java + PIC Process Management + Agile Tool Chain + Transition Management + DevOps and Biz DevOps + Project Management)

We are seeking an experienced Full Stack Developer (Expert) to lead and contribute to complex enterprise software development initiatives, with a particular focus on mainframe modernisation, application migration, Java development and cloud-based solutions.

The successful candidate will combine strong hands-on technical expertise with Agile leadership, project management and stakeholder engagement skills. You will play a key role in developing migration strategies, modernising legacy applications, coordinating technical teams and ensuring that solutions meet quality, security, performance, budget and delivery requirements.

This role is suited to a senior technical professional who can navigate complex enterprise environments, drive continuous improvement and translate business requirements into scalable, secure and sustainable technology solutions.

• Lead and coordinate software development and migration initiatives from planning through to implementation and support.

• Analyse existing mainframe applications, legacy systems, data sets and dependencies to determine migration requirements.

• Support the migration and modernisation of legacy applications, including the conversion of COBOL and PL/1 applications to Java-based solutions.

• Design, develop and maintain enterprise applications using Java, Spring Framework and Spring Boot.

• Contribute to cloud architecture and the migration of applications to AWS and Azure environments.

• Evaluate code conversion tools and technologies, assess proof-of-concept results and recommend appropriate technical solutions.

• Manage project scope, resource planning, budgets, timelines, risks and delivery milestones.

• Lead and facilitate Agile teams, ensuring alignment with business priorities, product objectives and agreed delivery targets.

• Collaborate with product owners, business stakeholders, infrastructure teams, external suppliers and development teams.

• Coordinate requirements gathering, analysis, documentation, technical sizing and solution design.

• Oversee system integration, testing, parallel runs, implementation, quality assurance and post-migration support.

• Ensure compliance with security standards, data protection requirements, architectural principles and operational procedures.

• Coordinate incident, problem and change management activities, ensuring service-level agreements and quality standards are maintained.

• Support troubleshooting, debugging, performance optimisation and the resolution of complex technical issues.

• Implement DevOps automation, continuous improvement practices and appropriate monitoring solutions.

• Develop and maintain technical documentation, migration procedures, architectural guidelines and operational standards.

• Facilitate knowledge transfer, mentor junior developers and promote collaboration across technical teams.

• Monitor application performance and optimise cloud infrastructure for reliability, scalability, cost and efficiency.

• Relevant degree or qualification in Information Technology, Software Engineering, Business or a related field.

• At least 10 years of experience in IT, software development and/or DevOps environments.

• 10+ years of relevant programming experience.

• 7–10 years of experience working across multiple Agile teams.

• Demonstrated experience in technical leadership, project delivery and managing complex software development initiatives.

• Previous exposure to a finance function, either through direct finance experience or as an Agile Master supporting a finance team.

• Experience in resource planning, budget management, project monitoring and delivery governance.

• Strong proficiency in Java, including object-oriented programming, multithreading, exception handling, collections, generics and input/output.

• Advanced experience with Spring Core, Spring MVC and Spring Boot.

• Strong understanding of enterprise application development, system integration and software architecture.

• Experience with DevOps, BizDevOps and Agile delivery methodologies.

• Working knowledge of AWS and/or Azure cloud technologies.

• Experience with project management, requirements analysis and translating business needs into technical solutions.

• Proficiency in Agile tools such as Jira, Confluence, X-Ray and Bitbucket.

• Knowledge of incident, problem and change management processes.

• Experience in software testing, debugging, system implementation and production support.

• Strong understanding of planning, risk management, technical coordination and delivery against agreed timelines.

• Ability to lead and facilitate technical teams using Agile methodologies.

• Strong facilitation, conflict resolution, coaching and stakeholder management skills.

• Ability to promote transparency, team empowerment, continuous improvement and accountability.

• Strong understanding of Scrum practices, sprint planning, burndown techniques, retrospectives and backlog management.

• Proven ability to manage complex tasks, resolve escalated issues and guide less experienced team members.

• Professional Scrum Master II (PSM II), Advanced Certified ScrumMaster (A-CSM), SAFe Advanced Scrum Master, Leading SAFe Agilist or Scaled Professional Scrum certification.

• Additional Scrum Master or project management certification.

• Experience with mainframe modernisation and migration from COBOL or PL/1 to Java.

• Familiarity with code conversion tools such as Astadia, Heirloom or BlueAge.

• Experience with mainframe technologies, including DB2 and IMS.

• Knowledge of AWS Lambda, serverless development, Kafka, streaming services and Pub/Sub architectures.

• Experience with OpenShift, Docker, Kubernetes and cloud-native technologies.

• Knowledge of J2EE, Hibernate, Servlets, JSP and ORM frameworks.

• Experience with modern frontend technologies such as Angular, React or Vue.js.

• Familiarity with JUnit, TestNG, automated testing and performance profiling tools.

• Experience with cloud architecture, high availability, application modularisation and system decoupling.

• Knowledge of Agile Working Model (AWM), IT project management methodologies and enterprise governance frameworks.

• German language proficiency.

• Relevant Degree or Qualification in Information Technology, Computer Science, Software Engineering, Business or Engineering.

• Professional Scrum Master II (PSM II) – Scrum.org.

• Advanced Certified ScrumMaster (A-CSM) – Scrum Alliance.

• SAFe Advanced Scrum Master Certification – Scaled Agile.

• Leading SAFe Agilist Certification – Scaled Agile.

• Scaled Professional Scrum Certification – Scrum.org.

• Additional Scrum Master certification.

• Project Management qualification or certification.

• Relevant certifications in Java development, cloud technologies (AWS or Azure), DevOps or Agile project management.