Senior Full Stack Engineer

We are looking for Full Stack Engineers to modernise a public sector digital service. The team will migrate a legacy tech stack to a modern, cloud-native, containerised platform on AWS. Engineers will build and configure products end to end, from frontend to backend, infrastructure, security integration, and production support.

Key Responsibilities:

• Develop and configure products, migrating legacy applications to a modern cloud-native, containerised tech stack
• Build responsive, accessible web frontends using ReactJS, TypeScript, and Next.js
• Develop backend services and APIs in Golang and/or Kotlin, including long-running business processes using a workflow engine (e.g. Temporal)
• Set up and maintain secure AWS infrastructure using Infrastructure as Code (e.g. Terraform)
• Implement security controls and monitoring, including authentication and identity integration with enterprise identity platforms, OIDC, and SAML
• Build and maintain CI/CD pipelines in GitLab, and deploy workloads to Kubernetes (EKS). Instrument applications for observability using tools such as Dynatrace or Datadog
• Support production deployments, troubleshoot issues, and take part in incident resolution
• Write clean, tested, well-documented code and take part in code reviews
• Define the technical architecture and target state for the modernised platform
• Lead delivery across multiple workstreams, coordinating with product owners, DevSecOps, and relevant stakeholders
• Provide strategic technical guidance, set engineering standards, and mentor team members
• Plan legacy-to-modern migration approaches, including sequencing, risk management, and cutover

Requirements:

• Senior Consultant: 7+ years of experience, including at least 2–3 years leading technical delivery or defining solution architecture
• Experience migrating or modernising legacy systems is strongly preferred
• Experience delivering large-scale enterprise or public sector projects is an advantage
• The role requires technical proficiency in ReactJS, TypeScript, Golang and/or Kotlin, CI/CD, Docker, Kubernetes, AWS architecture and services, Terraform or equivalent infrastructure as code tools, and hands-on experience with at least one observability tool
• Experience with Next.js
• Experience in setting up AWS cloud infrastructure (e.g. S3, EKS / ECS, EC2, Lambda, RDS, Load Balancers, API Gateway)
• Experience with a workflow engine (e.g. Temporal)
• Experience with a rules engine (e.g. Gorules, Open Policy Agent)
• Familiarity with observability tools such as Dynatrace, Datadog
• Implemented authentication using OIDC, SAML
• Implemented authorisation using RBAC, ABAC
• Experience with enterprise identity and security tools, directory services, access management, and endpoint security solutions
• Infrastructure and container security practices
• OutSystems, Oracle Policy Automation (OPA) / Oracle Intelligent Advisor (OIA), Sitefinity, Oracle technologies
• Strong problem-solving and debugging skills in production environments
• Clear communication with technical and non-technical stakeholders
• Senior Consultant: Proven leadership, stakeholder management, and ability to drive decisions