Senior Enterprise Architect - Cloud-Native Modernization

Acuity Analytics; Greater London; On-site; GBP 120,000 - 160,000; Full time

Job summary

Acuity Analytics seeks a senior Enterprise Architect to lead architecture assessment and target-state definition for large-scale legacy modernization across applications, data, and infrastructure. You will define pragmatic pathways, establish guardrails, and guide domain-aligned service decomposition in a complex, regulated environment.

You will collaborate with business, data, infrastructure, security, and delivery teams to ensure cloud portability, observability, and governance are embedded in

Qualifications

• Must have extensive enterprise architecture experience across large-scale legacy modernization and regulated environments.
• Strong hands-on architecture depth across modernization, integration, microservices, APIs, event streaming, container platforms and DevSecOps.
• Experience with cloud platforms, Kubernetes, Docker, IaC and observability.
• Excellent stakeholder management, architecture governance, decision facilitation and cross-functional coordination skills.

Responsibilities

• Own enterprise architecture assessment and target-state definition for large-scale legacy modernization initiatives across application, integration, data, infrastructure, security, and operations domains.
• Assess current-state monolithic applications, shared database dependencies, batch processing models, middleware integrations, reporting dependencies, operational constraints, and resiliency gaps to define pragmatic modernization pathways.
• Define future-state architecture aligned to separation of concerns, microservices, database-per-service, API-led integration, event-driven processing, cloud portability, automated delivery, observability, and enterprise governance principles.
• Establish architecture guardrails, reference patterns, decision records, integration standards, data ownership principles, service boundary guidance, and non-functional requirements for scalable and resilient modernization delivery.
• Guide decomposition of tightly coupled legacy capabilities into domain-aligned services, reusable platform components, controlled interfaces, independently deployable modules, and governed operational workflows.
• Support migration strategy using incremental modernization patterns such as strangler migration, parallel run, coexistence, controlled cutover, rollback planning, reconciliation, and phased capability transition.
• Provide architecture direction for integration modernization across messaging, APIs, file-based interfaces, event streaming, schema governance, idempotent processing, error handling, retry mechanisms, and dead-letter handling.
• Partner with data architecture teams to align application modernization with governed data platforms, lineage, auditability, data quality, reporting readiness, and operational data consumption patterns.
• Drive architecture alignment across cloud, on-premise, and hybrid deployment models including Kubernetes, containerization, platform engineering, DevSecOps, CI/CD, infrastructure-as-code, secrets management, and environment readiness.
• Define and validate resilience, high availability, disaster recovery, failover, monitoring, logging, tracing, alerting, operational readiness, and supportability requirements for business-critical enterprise platforms.
• Facilitate architecture governance forums, technical design reviews, solution walkthroughs, migration readiness assessments, risk reviews, and cross-team decision-making across delivery workstreams.
• Support implementation oversight during build, test, deployment, cutover, stabilization, and hyper-care phases to ensure solutions remain aligned with enterprise architecture guardrails and modernization objectives.
• Create and maintain architecture documentation including current-state assessments, target-state blueprints, transition architectures, integration views, dependency maps, decision logs, operational runbooks, and modernization roadmaps.

Skills

Legacy Modernization

Cloud-Agnostic Architecture

Domain-Driven Design

DevSecOps

CI/CD & IaC

Observability

DataBricks

Data Governance & Lineage

Cloud Portability

Kafka

.NET

Monolith Modernization

Event-driven architecture

REST/gRPC APIs

Kubernetes

Docker

Auditability

Education

AWS Certified Solutions Architect – Professional

Microsoft Certified: Azure Solutions Architect Expert

Tools

MSSQL

PostgreSQL

Job description

Acuity Analytics seeks a senior Enterprise Architect to lead architecture assessment and target-state definition for large-scale legacy modernization across applications, data, and infrastructure. You will define pragmatic pathways, establish guardrails, and guide domain-aligned service decomposition in a complex, regulated environment.

You will collaborate with business, data, infrastructure, security, and delivery teams to ensure cloud portability, observability, and governance are embedded in