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Flex

HSA/FSA payments, simplified.

Founding Solutions Architect

Solutions EngineerSolutions EngineerFull TimeRemoteLeadTeam 11-50Since 2023H1B SponsorCompany SiteLinkedIn

Location

United States

Posted

82 days ago

Salary

$160K - $260K / year

Seniority

Lead

Professional Certificate7 yrs expEnglish

Job Description

Founding Solutions Architect

Flex

• 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

Job 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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