Job Description - Senior AWS Cloud Systems Architect
Description
Position Overview
IgniteAction is seeking a senior AWS-certified Systems Architect to lead the design and governance of complex, multi-team modernization initiatives involving legacy application refactoring, cloud-native transformation, and system-of-systems integration.
This is not a traditional infrastructure architect role. The position requires architectural leadership across interconnected applications, data pipelines, integration layers, and shared services. The Architect will guide legacy-to-cloud transformations, apply structured migration sequencing (7 Rs framework), and embed DevSecOps and automated validation into the architecture from inception.
The Architect serves as the technical authority responsible for defining scalable, secure, and compliant target-state architectures across multiple delivery teams.
Key Responsibilities:
1. System-of-Systems Architecture Leadership
Lead end-to-end architecture across interdependent systems and workflows.
Define target-state architectures across presentation, application, data, and integration layers.
Ensure integration consistency across upstream and downstream systems in data-intensive environments.
Produce and maintain architecture artifacts including:
Logical, physical, data, and deployment views
Interface Control Documents (ICDs)
Architecture Decision Records (ADRs)
Conduct architecture reviews and provide authoritative technical guidance to engineering teams.
Define and enforce architecture standards and reusable design patterns across multiple teams.
2. Legacy Modernization & Refactoring Strategy
Define architectural approach for refactoring legacy statistical and data-intensive systems.
Establish modular design patterns that preserve:
Weighting logic
Variance estimation
Margin of Error (MOE) calculations
Statistical reproducibility
Design architectures that improve maintainability, scalability, observability, and performance.
Establish parallel validation and regression testing frameworks to ensure equivalence between legacy and modernized systems.
Provide architectural leadership for refactor, replatform, and migration initiatives.
3. 7 Rs Migration Framework Governance
Apply and govern the 7 Rs migration framework (Rehost, Replatform, Refactor, Repurchase, Relocate, Retain, Retire).
Classify systems based on complexity, risk, dependency centrality, and operational constraints.
Define phased migration waves aligned to production cycles and environment onboarding timelines.
Prevent hybrid cloud/on-premises thrashing through disciplined sequencing and guardrails.
Develop portfolio-level migration plans and modernization roadmaps.
4. Cloud-Native AWS Architecture
Architect AWS-based solutions leveraging services such as:
Lambda, Step Functions
ECS / EKS / Fargate (when justified)
Glue, Aurora/PostgreSQL, S3, Batch
CloudWatch, IAM, KMS, Secrets Manager
Design highly available, fault-tolerant, and secure architectures.
Define Infrastructure-as-Code standards for repeatable, auditable deployments.
Establish secure-by-design patterns aligned with Zero Trust, NIST RMF, and FedRAMP-style controls.
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