Composable Commerce Solution Architect

Litmus7 Systems Consulting Ltd.; San Francisco (CA); Hybrid; USD 180,000 - 240,000; Full time

Job summary

Litmus7 Systems Consulting Ltd. seeks a Senior Solution Architect to own end-to-end ecommerce architecture for large-scale platforms. You will lead MACH-based initiatives, evaluate platforms, guide replatform efforts, and align technology with business goals across stakeholders in a client-facing, onsite role.

Proven track record of delivering from scratch or replatforms, extensive knowledge of subsystems, API-first design, and performance/resilience considerations.

Qualifications

• Minimum 12+ years in ecommerce technology and 5+ years owning end-to-end commerce architecture.
• Hands-on depth in at least two MACH platforms (e.g., Salesforce Commerce Cloud, Commercetools, Shopify Plus, VTEX, Elastic Path).
• Experience leading platform selection/end-to-end assessments with KPI scoring, RFPs, and executive presentations.
• Architected at least one from-scratch or full-replatform enterprise ecommerce implementation.
• Expert across commerce subsystems: Profile, Catalog/PIM, Browse/Search, Cart/Checkout, Payments, Inventory, Returns, Back Office.
• Strong Java/Springboot microservices foundation; ability to review offshore designs and challenge vendor claims.
• Event-driven architecture, orchestration vs choreography, idempotency, eventual consistency in order/inventory flows.
• PBC integration across search, CMS, personalization, loyalty, OMS, and payment/fraud/tax providers.
• Ability to assess modularity, swap-ability, and data export rights.
• Proficient in one CSP (AWS/Azure/GCP) with API gateways, serverless, containers, and messaging (EventBridge/SQS/SNS/Kinesis/Kafka).
• Infrastructure-as-code (Terraform or equivalent), and SQL/NoSQL data architecture.
• Strong API architecture (REST, GraphQL, OpenAPI/Swagger); headless storefront patterns and SEO continuity.
• Observability and performance engineering; familiarity with PCI-DSS, GDPR, WCAG 2.1 AA.
• Ability to build and defend a TCO model and run phased migration roadmaps.

Responsibilities

• Own end-to-end ecommerce architecture for client engagements in a hands-on onsite role.
• Lead platform strategy, evaluate MACH ecosystem, and drive platform selection decisions.
• Define phased migration roadmaps with parity gates and no big-bang cutovers.
• Collaborate with engineering, product, merchandising, and finance to align technology with business goals.

Skills

12+ years ecommerce

5+ years MACH

Platform evaluation

End-to-end architecture

Platform replatforming

Headless storefront

API architecture

Agile / JIRA

Leadership / client facing

Tools

Salesforce Commerce Cloud

Commercetools

Shopify Plus/Hydrogen

SCAYLE

VTEX

Elastic Path

Terraform

AWS/Azure/GCP

Algolia / Coveo

Contentstack / Contentful

Constructor / Bloomreach

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.
• 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.