Infrastructure Engineer
Design, build, and operate cloud infrastructure, databases, and core systems to support Fast, reliable, and scalable platform.
Remote • United States- Full Time
- $160,000 – $220,000/year
- Min. 5 YOE
Flex
6 open rolesLast updated May 4, 2026 at 6:16 AM UTC
Flex Supply Co. offers HSA/FSA payments infrastructure for health and wellness brands. The service enables merchants to accept HSA/FSA at checkout and reports rising revenue, higher average order value, and improved checkout conversion over the most recent three-month period.
Hiring overview
See where Flex is hiring most heavily right now, which role groups stand out, and which openings were added most recently.
Open roles
6
Live openings on Kibo
Top role group
Engineering
3 matching jobs
Coverage
4 groups
Fresh hiring snapshot for Flex
Popular role groups
The strongest hiring clusters right now, based on the company's current live openings.
Engineering3
Customer Success1
Other1
Product1
Engineering
3 open roles in this group.
Recent openings
A preview of the latest roles we have indexed. Use the jobs tab for the full live inventory.
Frontend Engineer
Frontend Engineer leads React-based frontend work to ship high-quality experiences for merchants and consumers.
- Remote • United States
- Full Time
- $160,000 – $220,000/year
- Min. 5 YOE
Backend Engineer
Backend engineer builds backend services and APIs powering eligibility, payments, and LMN issuance at checkout.
- Remote • United States
- Full Time
- $160,000 – $220,000/year
- Min. 5 YOE
Product Designer
Own end-to-end product design for merchant experience, collaborating with engineering to ship high-impact product quickly.
- Remote • United States
- Full Time
- $120,000 – $190,000/year
- Min. 3 YOE
Founding Solutions Architect
Lead technical motion for enterprise deals, shaping architecture and integration strategies across multi-stakeholder purchases.
- Remote • United States
- Full Time
- $160,000 – $260,000/year
- Min. 7 YOE