Solutions Architect

Solutions ArchitectJob#: 3053762Location: Costa Mesa, California (Remote)Role OverviewThe mission is to own the technical solution end-to-end. This involves deciding where trust is enforced in each ecosystem, writing architecture decision records, designing demos, and serving as the technical representative to merchants and partners. This is a 6-month contract role.Key ResponsibilitiesProduce the hook-point inventory and runtime comparison for a partner's blueprint (Messages API vs Agent SDK vs Managed Agents) and author two ADRs for the primary runtime target and integration architecture.Design the reference integration, including session-start identity binding, backend-level decisioning, and the gateway verifier for hosted agents, ensuring no changes to merchant prompt bytes or gate code.Design loyalty-without-login on UCP and on a protocol-agnostic header/middleware rail.Shape the Verifiable Credential POC, defining the issuer, holder wallet, presentation flow, merchant verifier, and its privacy properties.Write the threat model for each integration, create merchant integration guides, develop demo runbooks with fallbacks, and run the demos.Own deliverables such as ADRs, hook-point inventory, threat models, reference architecture diagrams, integration guides, demo runbooks, and partner technical briefings.Required Qualifications8+ years in solutions or software architecture with hands-on code experience, including recent production work on LLM agent systems with tool use.Working knowledge of a major AI platform (Messages API tool use, prompt caching, Agent SDK, Managed Agents) and the Model Context Protocol, including authenticated MCP servers.Experience with identity and payments architecture: OAuth 2.0 / OIDC, JWT/JWKS, message signatures, and PCI-adjacent checkout flows. Familiarity with agentic-commerce protocols and KYA concepts is required.Experience with threat-modelling and privacy-by-design, with the ability to write ADRs and sequence diagrams for technical and partner audiences.Consulting-grade communication skills, with experience leading technical working sessions with external engineering teams.Preferred QualificationsVerifiable Credentials (W3C VC 2.0, OID4VCI/OID4VP, SD-JWT or BBS+).Experience with fraud/risk decisioning platforms.Knowledge of CDN/edge architectures (e.g., Cloudflare Workers).Prior experience in a forward-deployed or FDE role.Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.