Founding Solutions Architect
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Job Description
Founding Solutions Architect at Flex working on enterprise deals and technical integration. Collaborating closely with sales and engineering to shape company direction in the health and wellness payment space.
Responsibilities:
- The technical narrative for every enterprise deal, from first discovery call through security review, integration design, and go-live
- Custom integration architectures for complex merchant-built checkouts. The bulk of this work is direct API integration with sophisticated, custom commerce stacks
- Live POCs, sandbox demos, and integration walkthroughs that move six- and seven-figure deals across the line
- The structured feedback loop into product and engineering, synthesizing what enterprise prospects need, where we're losing on capability, and where the next durable bet is
- Reusable enablement assets, including reference architectures, integration playbooks, security and compliance one-pagers, and ROI models that scale the GTM team
- Smooth handoff to customer success and engineering for post-sale implementation
Requirements:
- 7+ years in Solutions Architecture, Sales Engineering, or Solutions Engineering, with at least 3 years selling into enterprise
- You've owned the technical side of complex, multi-stakeholder deals. The kind that involve a CTO, a CISO, a head of e-commerce, and a procurement team all in the same Slack channel
- You can read API docs, sketch an integration on a whiteboard, and ship a working POC when a deal calls for it. You don't need an engineer in the room to be technically credible
- Background in payments, fintech, e-commerce, or healthtech is strongly preferred HSA/FSA, benefits, or regulated payments is a major plus
- You've built feedback channels into product orgs that engineers actually trust, not just forwarded customer emails
- You write well. Crisp follow-ups, clean architecture diagrams, briefs an exec can read in 90 seconds
- Comfortable in early-stage chaos. You've been at a seed or Series A/B company before and you know what "first one in the seat" actually feels like
Benefits:
- Meaningful founding-team equity
- Medical, dental, and vision plans
- Unlimited PTO and sick days
- Paid parental leave
- Remote-first, with quarterly in-person meetups. Expect ~25% travel for prospect on-sites, partner conversations, and industry events
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