Full Stack Developer (Chief Expert)

Imizizi · Travel required · Java · COBOL · 2 days ago
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Location
In office (Pretoria)
Seniority
Architect · 10+ years exp
Employment
Full-Time

First seen by Alion on Nov 5, 2026.

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Imizizi

About Imizizi Diversity and growth at our core Imizizi, from mizizi, the Swahili word for "root", is 100% Black female-owned. It was founded on a deeply rooted passion for people, skills development, and service delivery.
imizizi.co.za · HQ: Pretoria, South Africa
Tech stack of Imizizi
Reference: JHB001527-SN-2

ESSENTIAL SKILLS:


  • Mainframe & Modernisation

  • Deep understanding of enterprise mainframe architectures and application landscapes.

  • Strong experience in mainframe-to-cloud modernisation and migration.

  • Strong working knowledge of IBM DB2 and IMS.

  • Understanding of COBOL, PL/I, Java and J2EE environments.

  • Experience analysing legacy applications, dependencies, interfaces, data flows and integration points.

  • Ability to define modernisation strategies including refactoring, replatforming, decoupling and application redesign.

  • Experience designing repeatable migration patterns suitable for a migration factory approach.

  • Cloud & Architecture

  • Strong AWS cloud architecture experience.

  • Experience defining target architectures, reference architectures, architectural principles and solution patterns.

  • Strong understanding of cloud-native and distributed application architectures.

  • Experience with AWS Blu Age or equivalent automated mainframe transformation approaches.

  • Knowledge of AI-enabled software engineering and its application within legacy modernisation.

  • Strong understanding of service-oriented, modular and decoupled architectures.

  • Experience designing for scalability, availability, resilience, security and operational supportability.

  • Integration & Data

  • Strong enterprise system integration architecture experience.

  • API design and OpenAPI principles.

  • Event-driven architecture.

  • Kafka and Pub/Sub integration patterns.

  • Mainframe-to-cloud data migration and synchronisation.

  • Change Data Capture concepts and technologies.

  • Experience integrating modernised applications with legacy and cloud platforms.

  • Engineering & Automation

  • Strong understanding of modern software engineering and DevOps practices.

  • Java and modern application development principles.

  • CI/CD and automated delivery concepts.

  • Infrastructure as Code principles.

  • Experience with Terraform and/or AWS CloudFormation.

  • Git and Maven.

  • Container technologies including Docker, Kubernetes and/or OpenShift.

  • Linux/Unix environments and shell scripting.

  • Automated testing, system integration testing and parallel-run approaches.

  • Chief Expert / Architecture Leadership

  • Ability to establish technical direction across a complex modernisation programme.

  • Ability to translate modernisation strategy into executable architecture and engineering standards.

  • Ability to make and govern complex architectural decisions across multiple applications and delivery teams.

  • Ability to develop reusable architectural patterns rather than application-specific solutions.

  • Strong technical leadership and engineering mentoring capability.

  • Ability to evaluate emerging technologies through proofs of concept and translate outcomes into production architecture.

  • Ability to communicate complex technical decisions to senior management, Product Owners and engineering teams.

  • Strong stakeholder management and ability to drive technical alignment across multiple organisations


ADVANTAGEOUS SKILLS:


  • Experience with AWS Transform for mainframe / AWS Re:Imagine.

  • Practical experience with AWS Blu Age.

  • Experience applying AI-assisted or AI-native software engineering techniques to application modernisation.

  • Experience with automated source-code analysis, business-rule extraction and specification generation.

  • Experience establishing or scaling a mainframe migration factory.

  • Experience modernising large enterprise application portfolios.

  • Experience running multiple modernisation approaches in parallel.

  • Practical experience transitioning from legacy architectures towards microservices and cloud-native architectures.

  • Serverless architecture and AWS Lambda.

  • AWS services such as S3 and Glue.

  • Experience with Payara and/or Quarkus.

  • Experience working with IBM IIB or comparable enterprise integration technologies.

  • Test-driven development and automated unit/integration testing.

  • Experience working in large-scale Agile delivery environments.

  • Experience working with globally distributed engineering teams and external technology partners.

  • Experience coaching architects and senior engineers.

  • German language capability advantageous.

  • Experience working within regulated or highly governed enterprise IT environments.

Duties & Responsibilities RESPONSIBILITIES:
  • Technical Strategy & Architecture
  • Own and evolve the technical architecture for the Mainframe Migration Service.
  • Define the target architecture for mainframe-to-cloud modernisation.
  • Establish architecture principles, standards, patterns and guardrails for migration teams.
  • Define reusable reference architectures that can be applied across multiple migration initiatives.
  • Ensure architectural consistency across legacy, integration, cloud and modern application landscapes.
  • Guide technical decisions regarding the appropriate modernisation approach for different application
  • characteristics.
  • Ensure architecture supports long-term maintainability and does not simply recreate legacy complexity in the cloud.
  • Modernisation Capability
  • Lead the technical establishment and industrialisation of the AWS Re:Imagine / AWS Transform modernisation capability.
  • Ensure architectural alignment between the emerging Re:Imagine capability and the established AWS Blu Age migration approach.
  • Define how multiple modernisation paths can operate within a common migration service.
  • Evaluate new modernisation technologies and approaches through structured POCs.
  • Convert successful POC outcomes into governed, repeatable production patterns.
  • Identify architectural constraints, technical risks and dependencies early in the migration lifecycle.
  • Migration Architecture
  • Define application and data migration architecture.
  • Establish approaches for legacy application analysis, decomposition and decoupling.
  • Define cloud landing-zone and application deployment architecture appropriate to migrated workloads.
  • Define patterns for migration of DB2 and IMS-based applications.
  • Define integration and coexistence patterns between mainframe and modernised applications.
  • Define data synchronisation and Change Data Capture patterns where parallel operation is required.
  • Support migration testing, system integration, parallel running and production implementation activities.
  • Engineering Enablement
  • Establish reusable engineering patterns supporting faster migration delivery.
  • Drive automation across build, test, deployment and infrastructure provisioning.
  • Define technical quality standards and architecture acceptance criteria.
  • Guide engineering teams on cloud-native architecture and modern software engineering practices.
  • Reduce application-by-application reinvention by establishing standard solutions that can be reused across the migration portfolio.
  • Mentor architects and engineers and facilitate technical knowledge transfer.
  • Ensure knowledge is institutionalised within the organisation rather than concentrated within individual suppliers or resources.
  • Technical Governance
  • Lead significant technical and architectural decisions affecting the migration service.
  • Conduct architecture and system design reviews and identify required improvements.
  • Ensure solutions remain aligned with enterprise architecture, security and integration requirements.
  • Establish architectural decision records and technical standards where appropriate.
  • Identify technical debt and architectural risks before they impact migration delivery.
  • Balance architectural governance with the need for delivery speed.
  • Stakeholder & Delivery Alignment
  • Work closely with the Product Owner and Delivery Manager to translate strategy into executable technical roadmaps.
  • Provide technical options and recommendations for future technology decisions.
  • Translate business and migration requirements into implementable architecture.
  • Collaborate with application teams, architecture, infrastructure, cloud, security and integration stakeholders.
  • Collaborate with external suppliers and technology partners during POCs and implementation activities.
  • Present architectural decisions, risks, trade-offs and recommendations clearly to technical and non-technical stakeholders.
  • Support migration planning, technical estimation and dependency identification.
  • Provide technical guidance to enable the migration capability to scale across multiple delivery teams.
QUALIFICATIONS/EXPERIENCE:
  • Relevant university degree in Computer Science, Information Technology, Software Engineering, Computer Engineering or a related discipline.
  • Alternatively, demonstrable equivalent senior-level enterprise architecture and software engineering experience.
  • Relevant cloud and architecture certifications are advantageous.
  • 10+ years' relevant professional experience in enterprise IT, software engineering or technology architecture.
  • This aligns with the minimum experience requirement in the existing specification.
  • Significant experience working as a Solution Architect, Technical Architect, Enterprise Architect or equivalent senior technical role.
  • Proven experience architecting complex enterprise solutions.
  • Proven experience in mainframe modernisation and mainframe-to-cloud migration.
  • Practical experience working with legacy mainframe technologies such as DB2, IMS, COBOL and PL/I.
  • Strong practical experience with AWS or comparable hyperscale cloud environments.
  • Proven experience defining target architectures and reference architectures.
  • Experience taking architecture from concept or POC through to production implementation.
  • Experience with enterprise system integration and complex application dependencies.
  • Experience with modern software engineering, automation and DevOps practices.
  • Experience providing technical leadership across multiple teams and disciplines.
  • Demonstrated experience mentoring and developing engineers and architects.
  • Experience influencing technical direction across organisational boundaries.
  • Experience translating complex technical strategy into executable delivery.
  • Experience communicating architecture and technology decisions to senior stakeholders.
  • Experience working with external suppliers and technology partners.
  • Experience working across geographically distributed teams.
  • Ability to work independently and take accountability for complex technical topics.
  • Strong written, verbal and presentation capability.
  • Willingness and ability to travel internationally where required, consistent with the existing role specification.
Submit your CV to: [email protected] and Subject line Role title
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