Full-Stack Engineer (DR-CRM Development)

About us

We're an established direct-response e-commerce operation processing company. We're now building WasabiCRM — our own order-management and payments CRM, purpose-built for high-volume direct-response commerce. Rather than bending a bloated, general-purpose platform to our needs, we're building a lean, vertical system around the workflows that actually move revenue: checkout, upsells, subscriptions, decline recovery, and payment orchestration.

This is a rare chance to build a payments-grade product from the core outward, with real transaction volume flowing through it from week one — not a prototype looking for users.

The mission

Replace the legacy CRM the business runs on today with a system we own end-to-end: faster, cleaner, and built exactly for how modern e-commerce operators sell. Stage one is a focused internal platform that processes live orders through our payment integrations. From there, it becomes the central system our whole team runs on — and, ultimately, a product we open to external partners. You'll be one of the first engineers on this and will have direct influence over architecture, stack, and product direction.

What you'll build

• Checkout & funnel engine — high-converting, embeddable checkouts with order bumps, one-click upsells/downsells, and A/B testing
• Payments layer — integrations with payment processors and gateways (charges, tokenization/card-on-file, refunds, webhooks), plus transaction logging modeled as immutable events
• Subscription & rebill engine — recurring billing with dunning, smart retries, and decline recovery
• Orders, customers & reporting — a clean order/customer data model, a real-time operator dashboard, and by-product performance reporting
• Integrations — processors, fulfillment (ShipStation/3PL), email/SMS, and tracking/attribution via webhooks and postbacks

• Data migration tooling — reliable import of orders, subscriptions, and customer records from other CRMs

   

What you'll own

• Ship production features on a fast, iterative cadence with real revenue on the line
• Design a data model and API built to scale from internal use to a multi-tenant product
• Integrate third-party APIs cleanly (payments, fulfillment, messaging) with robust webhook handling, retries, and reconciliation
• Build for reliability: this system handles money, so correctness, idempotency, and auditability matter more than moving fast and breaking things
• Provide input into frontend development to design a beyond industry standard UI/UX

• Collaborate directly with the founders and a non-technical product owner — explain trade-offs in plain terms and demo working software every week

   

Required experience

• 2+ years building and shipping full-stack web applications end-to-end
• Strong TypeScript/JavaScript with React and Next.js
• Solid Node.js backend experience and comfort designing REST APIs
• Supabase is a must — hands-on experience building on it in production (Postgres schema design, Row-Level Security, Auth, storage, and realtime)
• Hands-on experience integrating third-party APIs and webhooks — ideally including a payment provider (Stripe, or similar)
• Deployment and ops on modern infrastructure (Vercel, plus AWS or equivalent)
• Understanding of authentication, authorization, and secure handling of sensitive data

• Fluent written and spoken English, and the self-direction to own features without hand-holding

   

Bonus points

• Direct experience with subscription/recurring-billing systems (dunning, retries, churn/decline recovery)
• Familiarity with payment concepts — gateways, merchant accounts (MIDs), tokenization, chargebacks, PCI scope
• Experience with e-commerce or CRM/order-management platforms (Shopify, CheckoutChamp/Konnektive, Sticky.io, Recharge, or similar)
• Multi-tenant SaaS architecture experience

• A track record of taking a product from zero to production

   

What we offer

• A greenfield build with real usage from day one and genuine ownership of the architecture
• A small, senior team that ships fast and makes decisions quickly — no bureaucracy
• Competitive compensation, remote flexibility, and room to grow into a lead role as the team scales