Solutions Engineer

Summary

Sezzle is a fintech company transforming shopping through interest-free installment plans and merchant payment solutions. The Solutions Engineer will own the technical merchant relationship from pre-sales through live integration, designing solutions, leading demos, supporting complex enterprise integrations, and advising merchants after launch.

Responsibilities

• Own technical discovery for prospective merchants: understand their stack, their checkout flow, and their constraints, then map them to the right Sezzle integration path
• Lead product demos and technical presentations for merchant engineering and business stakeholders
• Design integration solutions across our API, SDKs, and platform plugins (Shopify, BigCommerce, Magento, WooCommerce, Wix, and custom builds)
• Write technical proposals and complete RFP and security questionnaire responses
• Support merchant mobile app integrations: SDK implementation, in-app checkout, and native versus webview handoff
• Validate integrations in sandbox and in production before launch, including checkout flow, widget and messaging placement, redirect and handoff behavior, and settlement
• Troubleshoot live integration issues alongside Support and Engineering, and own the technical narrative back to the merchant
• Translate recurring merchant needs into product feedback, and push for the fixes that unblock revenue
• Build and maintain integration documentation, runbooks, and internal enablement so the team scales without you in every call
• Act as the trusted technical advisor for your merchants after launch, spotting optimization opportunities they haven't asked for yet

Skills

• 4+ years in a customer-facing technical role: solutions engineering, sales engineering, implementation, solutions architecture, or technical account management
• Experience with mobile SDK integrations on iOS and Android, including the ability to guide merchant mobile developers through implementation and debug what breaks
• Experience supporting enterprise merchants through complex, multi-stakeholder integrations with custom-built commerce stacks
• Hands-on experience with REST APIs, webhooks, and reading API documentation critically
• Working knowledge of web technologies: HTML, CSS, JavaScript
• Familiarity with at least one major e-commerce platform (Shopify, BigCommerce, Magento, WooCommerce, Wix) and how payment methods integrate into it
• Understanding of e-commerce workflows: cart, checkout, payment authorization and capture, refunds, shipping, and product management
• Ability to explain technical concepts clearly to non-technical audiences, and business context clearly to engineers
• Strong written communication. You will produce documentation and proposals that merchants and internal teams rely on
• Comfort managing several merchant integrations at once in a fast-moving environment
• Ability to read code in at least one language well enough to debug a merchant's implementation
• Demonstrated ability to use AI tools effectively in day-to-day work, including research, technical documentation, problem-solving, and workflow automation
• Experience at a payments company, PSP, or BNPL provider
• Familiarity with payment gateway architecture and how alternative payment methods are surfaced at checkout
• Experience with in-store or omnichannel payment integrations
• Bachelor's degree in computer science, computer engineering, or a related field, or equivalent practical experience

Qualifications

Must Haves

• 4+ years in a customer-facing technical role: solutions engineering, sales engineering, implementation, solutions architecture, or technical account management
• Experience with mobile SDK integrations on iOS and Android, including the ability to guide merchant mobile developers through implementation and debug what breaks
• Experience supporting enterprise merchants through complex, multi-stakeholder integrations with custom-built commerce stacks
• Hands-on experience with REST APIs, webhooks, and reading API documentation critically
• Working knowledge of web technologies: HTML, CSS, JavaScript
• Familiarity with at least one major e-commerce platform (Shopify, BigCommerce, Magento, WooCommerce, Wix) and how payment methods integrate into it
• Understanding of e-commerce workflows: cart, checkout, payment authorization and capture, refunds, shipping, and product management
• Ability to explain technical concepts clearly to non-technical audiences, and business context clearly to engineers
• Strong written communication. You will produce documentation and proposals that merchants and internal teams rely on
• Comfort managing several merchant integrations at once in a fast-moving environment
• Ability to read code in at least one language well enough to debug a merchant's implementation
• Demonstrated ability to use AI tools effectively in day-to-day work, including research, technical documentation, problem-solving, and workflow automation

Nice to Haves

• Experience at a payments company, PSP, or BNPL provider
• Familiarity with payment gateway architecture and how alternative payment methods are surfaced at checkout
• Experience with in-store or omnichannel payment integrations
• Bachelor's degree in computer science, computer engineering, or a related field, or equivalent practical experience

Benefits

• Unlimited PTO, volunteer hours and sabbatical
• Life, STD/LTD, medical, dental and vision insurance
• Highly discounted LifeTime gym membership
• 401k with match
• Remote work arrangement