← Role Archetypes
Platform Specialist Track

Platform Architect

SFIA 6-7
GPE → JPE → IMPE → SPE →
TTL → EM
LSE → PA
→ HoE → VP

Defining enterprise platform strategy, shaping cloud-native architecture patterns, owning the developer experience vision, leading technology selection, and designing the security and compliance architecture that underpins the organisation's engineering capability.

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Growing into this role

Senior Platform Engineer to Platform Architect

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Performance Calibration

Platform Architect - Performance Levels

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Behaviour Tracker

Platform Architect - Performance Tracker

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Overview

As a Platform Architect, you define the structural foundations of the organisation's engineering platform. You set the enterprise-level patterns for how infrastructure is provisioned, how software is deployed, how the platform serves engineering teams, and how the whole estate is secured and governed. Your decisions shape the working environment of every software engineer in the organisation.

You operate at the intersection of technology strategy, security architecture, and engineering craft. You hold a clear, well-reasoned long-term view of the organisation's platform architecture, communicate it authoritatively to technical and executive audiences, drive adoption across teams, and continually evolve it as cloud technology, security requirements, and engineering needs change.

Key Responsibilities

Enterprise Platform Strategy

  • Define and maintain the organisation's enterprise platform strategy - the architectural principles, reference architectures, and technology standards that govern how engineering infrastructure is built and operated.
  • Develop and communicate the target state platform architecture - where the organisation is heading, how it will get there, and what investment and trade-offs are involved.
  • Review and govern significant architectural decisions made by platform engineering teams - ensuring coherence with enterprise patterns and flagging deviations that create systemic risk.
  • Lead the design of critical, cross-cutting platform infrastructure - multi-account cloud strategy, shared services, identity and access architecture, network topology.
  • Balance long-term architectural ideals with the practical constraints of delivery pace, team capability, and legacy infrastructure.

Cloud-Native Architecture

  • Define the organisation's cloud-native architecture patterns - Kubernetes platform design, service mesh strategy, GitOps patterns, progressive delivery architecture.
  • Establish compute, networking, and storage standards that apply across the engineering organisation.
  • Lead the design of multi-cloud and hybrid-cloud strategies where they are appropriate - including workload placement, data sovereignty, and disaster recovery architecture.
  • Maintain architectural coherence across the cloud estate - ensuring different engineering teams build on consistent foundations rather than diverging into incompatible patterns.
  • Advise on cloud provider relationships - contract structures, commitment strategies, architectural dependencies - at an organisational level.

Developer Experience Vision

  • Own the long-term vision for the internal developer platform - defining what world-class developer experience looks like for the organisation and the architectural path to achieve it.
  • Define the platform API contract - the stable interfaces that software engineering teams depend on and that constrain how the underlying platform can evolve.
  • Drive measurement of developer experience at an organisational level - defining the metrics that matter, tracking them over time, and tying platform investment to developer experience outcomes.
  • Evaluate and architect developer platform tooling - IDPs, developer portals, self-service frameworks - at enterprise scale.
  • Ensure the platform architecture enables the engineering delivery model the organisation aspires to - fast flow, safe deployments, and high engineering autonomy.

Security and Compliance Architecture

  • Design the security architecture of the platform - zero-trust networking, workload identity, secrets management, supply chain security, and security observability.
  • Ensure the platform architecture meets the organisation's regulatory and compliance requirements - SOC 2, ISO 27001, financial services requirements, or equivalent.
  • Lead the organisation's platform security posture - defining security standards, reviewing implementations, and driving remediation of security debt.
  • Collaborate with the CISO and security engineering teams to translate security policy into implementable platform architecture.
  • Own the organisation's software supply chain security strategy - SBOM, artifact signing, dependency management, and secure build patterns.

Technology Selection and Organisational Capability

  • Define the organisation's platform technology radar - which tools, frameworks, and patterns to adopt, standardise, and retire.
  • Lead vendor assessments and technology selection processes for significant platform investments - cloud providers, Kubernetes distributions, observability platforms, developer tooling.
  • Build platform architectural capability within the engineering organisation - coaching senior platform engineers, developing architecture review processes, and growing the next generation of platform architects.
  • Represent platform architecture in executive and senior leadership forums - translating complex architectural concerns into business resilience, engineering productivity, and security risk language.
Role Specific

Cloud-Native Architecture Standards

Define and govern the cloud-native architecture standards, reference implementations, and technology choices used across the organisation's platform estate - ensuring consistency, security, and interoperability at scale.

Security and Compliance Architecture

Own the security architecture of the platform - designing the zero-trust, workload identity, and supply chain security patterns that protect the organisation's engineering environment and ensure compliance with applicable regulatory requirements.

Developer Experience Architecture

Own the architectural vision for the internal developer platform - defining the platform API contract, the self-service model, and the tooling choices that determine the quality of the engineering experience across the organisation.

Behaviours

Learning & Growth

  • Maintains deep, current awareness of the cloud-native landscape - tracking CNCF project graduation, cloud provider capability announcements, emerging security patterns, and developer platform evolution.
  • Actively builds a peer network of platform architects across the industry - learning from others operating at similar scale and complexity.
  • Reads foundational and cutting-edge literature on platform engineering, cloud architecture, and security - bringing relevant insights into the organisation.
  • Reflects critically on past architectural decisions - publishing internal post-mortems that help the organisation learn from both good and poor architectural choices.
  • Develops breadth across adjacent disciplines - application architecture, data architecture, security engineering - to design platform architectures that integrate cleanly with the wider technical estate.
  • Continuously reassesses existing architectural commitments in light of new evidence - willing to evolve direction when technology, business needs, or security requirements change.

Delivery

  • Delivers architectural artefacts - reference architectures, ADRs, technology radars, security architecture documents - with the same rigour and timeliness expected of engineering delivery.
  • Maintains a visible, actionable roadmap for platform architecture evolution - not just a vision but a sequenced programme of work with clear investment requirements.
  • Balances architectural idealism with delivery pragmatism - making explicit, documented decisions about where to accept short-term technical debt.
  • Drives adoption of platform standards through enablement, review, and feedback - ensuring architecture is implemented as intended.
  • Coordinates across multiple engineering teams on cross-cutting platform work - maintaining coherence without becoming a bottleneck.
  • Reviews platform implementations against architectural intent and closes the feedback loop - updating standards when reality reveals better approaches.

Quality & Craft

  • Produces architectural documentation that is clear, precise, and durable - written for the engineers who implement it, the operators who maintain it, and the leaders who fund it.
  • Designs platform architectures that prioritise security, reliability, and long-term maintainability - resisting pressure to optimise for delivery speed at the cost of structural integrity.
  • Applies systems thinking with rigour - modelling interdependencies, failure modes, blast radii, and evolution paths before committing to significant architectural directions.
  • Reviews platform implementations for security correctness - not just compliance with stated standards but genuine security effectiveness.
  • Establishes quality gates for architectural compliance - ensuring teams have clear, lightweight checkpoints to validate alignment with platform standards.
  • Holds high standards for infrastructure quality across the organisation - naming conventions, tagging taxonomy, IaC patterns - and enforces them through review and tooling rather than manual policing.

Communication

  • Communicates platform architecture to executive audiences clearly - translating structural complexity into engineering resilience, security risk, and productivity investment language.
  • Writes architecture standards and decision records that are precise enough to be implemented correctly and accessible enough to be understood without a guide.
  • Facilitates architecture review sessions that reach clear, well-reasoned decisions - driving productive debate to good conclusions without design-by-committee.
  • Builds influential relationships with engineering leaders, security teams, and technology vendors through consistent credibility and clear thinking.
  • Communicates the "why" behind platform architectural constraints - ensuring engineers understand the reasoning, not just the rules, so they can make good decisions in unanticipated situations.
  • Presents complex trade-offs fairly - including the costs and limitations of the recommended approach.

Collaboration

  • Partners effectively with engineering leadership - VPs of Engineering, Heads of Platform, CTOs - to align platform architecture with organisational strategy.
  • Collaborates closely with the CISO and security engineering teams - ensuring platform security architecture is both effective and implementable.
  • Works with data architects to ensure the platform provides the infrastructure capabilities the data estate requires.
  • Builds a platform architecture community of practice - connecting senior platform engineers across teams and creating shared ownership of architectural standards.
  • Engages with cloud providers and key vendors at a strategic level - participating in roadmap discussions and ensuring the organisation's architectural needs are represented.
  • Represents the organisation at industry forums and external events, building external reputation and bringing outside perspectives inward.

Ownership

  • Owns the coherence and security posture of the organisation's platform architecture - accountable for its long-term structural health.
  • Takes responsibility for platform architectural debt - identifying it, quantifying the risk it represents, and advocating for investment in resolving it.
  • Drives governance of the platform estate with genuine authority - escalating to senior leadership when architectural standards are being systematically bypassed in ways that create organisational risk.
  • Ensures architectural decisions are durable - designed to evolve gracefully as the organisation scales and as cloud technology continues to mature.
  • Owns the organisation's platform technology radar - keeping it current, evidence-based, opinionated, and actionable.
  • Holds themselves accountable for developer experience outcomes at an organisational level - not just the architecture on paper but the experience engineers have every day.

Technical Foundation

  • Maintains deep, current expertise in cloud-native platform architecture - including Kubernetes internals, service mesh patterns, GitOps, progressive delivery, and cloud security architecture.
  • Understands the engineering realities behind platform patterns - able to reason about implementation complexity, operational overhead, failure modes, and security implications at a detailed level.
  • Demonstrates breadth across the full platform technology landscape - from compute and networking through container orchestration, observability, developer tooling, security, and FinOps.
  • Applies security architecture with practical engineering sense - translating security requirements into implementable platform patterns that engineers can work with confidently.
  • Understands the economics of platform infrastructure at organisational scale - cloud costs, tooling licensing, operational overhead, and the engineering productivity returns on platform investment.
  • Keeps pace with the evolution of AI/ML as a platform engineering workload and as a tooling capability - ensuring the platform strategy addresses both dimensions.
  • Maintains sufficient hands-on capability to credibly review engineering implementations and earn the trust of the engineering teams they advise.
Skills
Deep expertise in cloud-native platform architecture - Kubernetes at scale, service mesh, GitOps, progressive delivery, and cloud-native security patterns.
Advanced cloud architecture capability - multi-account strategy, network topology at enterprise scale, identity federation, data sovereignty.
Strong experience with internal developer platform design - Backstage, Port, or equivalent - and the architectural principles of effective platform API design.
Comprehensive understanding of platform security architecture - zero-trust networking, workload identity (SPIFFE/SPIRE), supply chain security (SLSA, Sigstore), and compliance frameworks.
Experience with observability architecture at enterprise scale - OpenTelemetry instrumentation standards, telemetry pipeline design, and long-term metric and log storage.
Ability to evaluate and select platform tooling, making evidence-based recommendations grounded in security, operational overhead, vendor risk, and cost.
Strong communication and influence skills - able to build consensus across engineering, security, and executive stakeholders.
Experience working with regulatory and compliance frameworks applicable to engineering infrastructure - SOC 2, ISO 27001, financial services, or equivalent.
AI AI & Automation Expectations Updated for the AI-augmented era

AI Augmented Delivery

  • Shapes the organisation's strategy for AI in platform engineering - defining where AI-generated IaC, runbook automation, and AIOps tooling create genuine value and where the risks of AI-generated infrastructure configuration require mandatory human review.
  • Evaluates AI-powered platform tooling - AIOps platforms, AI-driven anomaly detection, intelligent security scanning - as part of the platform technology selection process, assessing their security implications, data handling, and architectural fit.
  • Defines the organisation's standards for AI in the software supply chain - policies on AI-generated code in production, provenance requirements, and the security architecture of AI coding tools in the engineering environment.
  • Uses AI to accelerate architectural documentation at scale - generating initial drafts of reference architectures, technology radar entries, and architectural decision records - then applies expert review and refinement.
  • Assesses the platform architecture implications of AI/ML workloads - GPU compute provisioning, model serving infrastructure, MLOps platforms - ensuring the platform strategy accounts for AI as a first-class engineering workload.
  • Leads the conversation on AI governance in engineering - working with security, legal, and leadership to define appropriate policies for AI tool use across the engineering organisation.