Composable Commerce Solution Architect

Litmus7; San Francisco (CA); On-site; USD 150,000 - 160,000; Full time

Job summary

Litmus7 is seeking a Senior Solution Architect with 12+ years in eCommerce technology to own end-to-end commerce architecture on composable/MACH platforms. You will lead platform selections, architect multi-subsystem commerce solutions, and drive phasing strategies from legacy to modern architectures.

Expect deep hands-on work with cloud, microservices, API strategies, and data modeling in a customer-facing, on-site role.

Qualifications

• Must have 12+ years in eCommerce technology with 5+ years as a Solution Architect
• 5+ years architecting on composable/MACH platforms with hands-on depth in multiple platforms
• Experience leading end-to-end platform selections and recommending to executives
• Architected at least one from-scratch or full-replatform enterprise ecommerce implementation
• Expert across commerce subsystems: Profile, Catalog/PIM, Browse/Search, Cart/Checkout, Pricing/Promotions, Payments, Inventory, Returns
• Strong Java Springboot microservices foundation to review offshore designs and challenge ISV claims
• Event-driven and reactive architecture, including event modelling and eventual consistency in orders/inventory
• Experience with PBC integration across search, CMS, personalization, loyalty, OMS, payments/fraud/tax
• Ability to assess modularity, swap-ability, and data export rights
• Expert in one CSP (AWS/Azure/GCP) with API gateways, serverless, containers and messaging
• Infrastructure-as-code with Terraform or equivalent
• SQL/NoSQL data architecture and data modeling
• Strong API architecture: REST, GraphQL, OpenAPI, versioning
• Headless storefront: React/Next.js, edge rendering, caching, SEO
• Observability and performance engineering with New Relic/Datadog; NFR across PCI-DSS, GDPR
• Ability to build and defend a TCO model
• Experience defining strangler-pattern roadmaps and phased migrations
• Proficient in Agile methodologies and JIRA
• Retail domain knowledge; apparel/fashion preferred
• Exposure to subscription or curated commerce models is a plus
• Agentic commerce readiness is a plus
• Vendor/ISV management and offshore team leadership
• Excellent communication and stakeholder management

Responsibilities

• Define and drive enterprise ecommerce architecture strategy
• Lead platform selections, RFPs, vendor deep-dives and executive presentations
• Architect end-to-end ecommerce implementations from scratch or replatforming
• Oversee subsystems like catalog, PIM, pricing, payments, inventory, returns
• Review offshore team designs and challenge vendor claims
• Ensure event-driven, microservices-based designs and modular architecture
• Align CSP, API gateways, serverless, containers and messaging strategies
• Implement IaC with Terraform/CloudFormation and manage cloud resources
• Model data with SQL/NoSQL and support data governance
• Shape headless storefronts with React/Next.js and edge rendering
• Establish observability, performance, and security (PCI-DSS, GDPR)
• Develop TCO models and phased migration roadmaps
• Collaborate with agile teams and manage stakeholders

Skills

End-to-end commerce

Composable MACH platforms

Platform selection

Replatforming

Commerce subsystems

Springboot microservices

Event-driven architecture

Terraform IaC

SQL/NoSQL data modeling

REST/GraphQL APIs

Headless storefront

Observability tooling

TCO modelling

Agile/JIRA

Retail domain knowledge

Tools

Terraform

CloudFormation

ARM

Deployment Manager

New Relic

Datadog

Algolia

Contentstack

Contentful

Amplience

Adobe Target

Dynamic Yield

Redis

Job description

• Minimum 12+ years in eCommerce technology, with 5+ years as a Solution Architect owning end-to-end commerce architecture.
• 5+ years architecting on composable/MACH platforms — hands-on depth in at least two of Salesforce Commerce Cloud, Commercetools, Shopify (Plus/Hydrogen/Functions), SCAYLE, VTEX, Spryer, Fabric or Elastic Path, including their real constraints, not just certifications.
• Recommended to have led at least one platform selection/assessment end to end — KPI-based scoring model, RFP, vendor deep-dives, and a recommendation presented to executive leadership.
• Must have architected at least one from-scratch or full-replatform enterprise eCommerce implementation through to production.
• Expert across commerce subsystems: Profile, Product/Catalog & PIM, Browse & Search, Cart/Order/Checkout, Pricing & Promotions, Payments, Inventory, Returns and Back Office.
• Strong foundation in enterprise Java Springboot microservices — enough to review the offshore team's designs and challenge an ISV's technical claims in a deep-dive.
• Event-driven and reactive architecture: event modelling, orchestration vs choreography, idempotency, and eventual consistency in order and inventory flows.
• PBC integration architecture across search & discovery (Constructor, Bloomreach, Algolia, Coveo), CMS (Contentstack, Contentful, Amplience), personalization/recommendations (Adobe Target, Dynamic Yield), loyalty, OMS and payment/fraud/tax providers.
• Ability to assess true modularity — swap-ability per domain, lock-in surface, event coverage, extension model and data export rights.
• Expert in one CSP (AWS/Azure/GCP) with in-depth knowledge of its services; strong on API gateways, serverless, containers and messaging (EventBridge/SQS/SNS/Kinesis/Kafka).
• Infrastructure-as-code with Terraform or equivalent (CloudFormation/ARM/Deployment Manager).
• SQL and NoSQL data architecture (MySQL, Oracle, Postgres, MongoDB, Cassandra, Cosmos, DynamoDB), plus product data modelling, catalog unification and search-index strategy.
• Strong API architecture: REST, GraphQL (incl. federation), JSON, OpenAPI/Swagger, versioning and contract governance.
• Headless storefront architecture — React/Next.js, edge rendering, BFF patterns, caching (Redis/Hazelcast/CDN), Core Web Vitals and SEO continuity through a phased migration.
• Observability and performance engineering with New Relic, Datadog or equivalent; NFR rigour across capacity, resilience, PCI-DSS, CCPA/GDPR and WCAG 2.1 AA.
• Must be able to build and defend a TCO model — licence/consumption cost, implementation and run cost, CAPEX/OPEX, and the cost of capability gaps.
• Experience defining phased, strangler-pattern roadmaps that absorb an incumbent platform slice by slice, with parity gates and no big-bang cutover.
• Proficient in Agile methodologies and JIRA.

Salary: $150,000 to $160,000 per Annum

Required Qualifications

• Minimum 12+ years in eCommerce technology, with 5+ years as a Solution Architect owning end-to-end commerce architecture.
• 5+ years architecting on composable/MACH platforms — hands-on depth in at least two of Salesforce Commerce Cloud, Commercetools, Shopify (Plus/Hydrogen/Functions), SCAYLE, VTEX, Spryer, Fabric or Elastic Path, including their real constraints, not just certifications.
• Recommended to have led at least one platform selection/assessment end to end — KPI-based scoring model, RFP, vendor deep-dives, and a recommendation presented to executive leadership.
• Must have architected at least one from-scratch or full-replatform enterprise eCommerce implementation through to production.
• Expert across commerce subsystems: Profile, Product/Catalog & PIM, Browse & Search, Cart/Order/Checkout, Pricing & Promotions, Payments, Inventory, Returns and Back Office.
• Strong foundation in enterprise Java Springboot microservices — enough to review the offshore team's designs and challenge an ISV's technical claims in a deep-dive.
• Event-driven and reactive architecture: event modelling, orchestration vs choreography, idempotency, and eventual consistency in order and inventory flows.
• PBC integration architecture across search & discovery (Constructor, Bloomreach, Algolia, Coveo), CMS (Contentstack, Contentful, Amplience), personalization/recommendations (Adobe Target, Dynamic Yield), loyalty, OMS and payment/fraud/tax providers.
• Ability to assess true modularity — swap-ability per domain, lock-in surface, event coverage, extension model and data export rights.
• Expert in one CSP (AWS/Azure/GCP) with in-depth knowledge of its services; strong on API gateways, serverless, containers and messaging (EventBridge/SQS/SNS/Kinesis/Kafka).
• Infrastructure-as-code with Terraform or equivalent (CloudFormation/ARM/Deployment Manager).
• SQL and NoSQL data architecture (MySQL, Oracle, Postgres, MongoDB, Cassandra, Cosmos, DynamoDB), plus product data modelling, catalog unification and search-index strategy.
• Strong API architecture: REST, GraphQL (incl. federation), JSON, OpenAPI/Swagger, versioning and contract governance.
• Headless storefront architecture — React/Next.js, edge rendering, BFF patterns, caching (Redis/Hazelcast/CDN), Core Web Vitals and SEO continuity through a phased migration.
• Observability and performance engineering with New Relic, Datadog or equivalent; NFR rigour across capacity, resilience, PCI-DSS, CCPA/GDPR and WCAG 2.1 AA.
• Must be able to build and defend a TCO model — licence/consumption cost, implementation and run cost, CAPEX/OPEX, and the cost of capability gaps.
• Experience defining phased, strangler-pattern roadmaps that absorb an incumbent platform slice by slice, with parity gates and no big-bang cutover.
• Good Retail domain knowledge; apparel/fashion preferred.
• Exposure to subscription or curated/stylist-led commerce models is a strong plus.
• Agentic commerce readiness — governed, machine-consumable access to catalog, inventory, pricing and order data — is an added advantage.
• Proficient in Agile methodologies and JIRA.

Professional Skill Requirements

• Proven ability to work creatively and analytically in a problem-solving environment, creating structure where the client has none.
• This is a client-facing onsite role — exceptional written and verbal communication skills, with the ability to communicate effectively with business partners, technology partners, peers and senior management.
• Executive presence —able to deliver an unwelcome finding without triggering defensiveness, and to hold a position under pressure from a vendor or an internal advocate.
• Workshop facilitation — able to run a room with competing agendas and leave with a decision.
• Exceptional written output — assessment charters, architecture blueprints, scoring narratives and board-ready readouts.
• Vendor/ISV management — runs RFPs firmly and fairly, extracts written commitments, and distinguishes roadmap promises from shipped capability.
• Able to lead and quality-gate an offshore pod across a significant timezone offset, personally reviewing every artefact before it reaches the client.
• Strong interpersonal skills and the ability to work with multiple stakeholders across engineering, product, merchandising and finance to drive success.