Payments & Integration Specialist

MULTI-PROVIDER PAYMENT INTEGRATION, BUILT FOR SAAS REVENUE

One payment provider becomes three faster than you think. I build the layer that holds it together — connecting Stripe, Authorize.Net, PayPal and others to your product, CRM and accounting, with the reliability revenue systems need and most integrations quietly lack.

No pitch. If you don't need custom work, I'll say so.

Your Payment Architecture

StripeAuthorize.NetPayPal+ SEPA / local
One Internal Payment Layerprovider-agnostic · adapters do the translating
Your ProductHubSpot CRMAccounting
Verified webhooksIdempotentReconciled daily

One Integration Becomes Three. Then the Numbers Stop Agreeing.

Most SaaS teams start with one payment provider. Then a customer asks to pay by SEPA, an enterprise deal needs invoicing and bank transfer, or a new market demands a local method your provider handles badly. Suddenly the logic that was simple at the start is spread across systems that don't agree with each other.

A webhook that never arrives throws no error

A subscription that quietly stops renewing looks like lost interest

Stripe, your CRM and your books each show different numbers

By the time anyone notices, the revenue is already gone

What I Build

Revenue Infrastructure That Stays Correct

Custom payment integrations for early-stage SaaS — from the provider layer to the systems your finance team actually looks at.

Multi-Provider Payment Architecture

A single internal payment layer that talks to several providers, so adding or switching one doesn't mean rewriting your billing logic. Your application stays provider-agnostic; the adapters do the translating.

Add a provider without a rewrite

Subscription & Recurring Billing

Trials, proration, mid-cycle upgrades and downgrades, usage-based components, coupons — and the failed-payment recovery logic that decides whether a customer churns or renews.

Billing that matches your model

Payment-to-CRM & Accounting Sync

Payments in Stripe, customers in HubSpot, invoices in your accounting system. I connect them so the same numbers appear in all three — without someone re-keying data every week.

One set of numbers, everywhere

Failed Payment Recovery & Dunning

Retry scheduling based on your actual decline patterns rather than defaults, card-updater coverage, and recovery sequences that recover revenue instead of annoying customers.

Churn saved, not nagged

Reconciliation & Monitoring

A scheduled process that compares what your provider says happened against what your systems recorded — and alerts when they disagree. This is the part most integrations skip, and the reason silent failures stay silent.

The backstop most integrations skip

How I Build It

I Design for the Failure Paths First

Payment failures are silent. A webhook that never arrives throws no error. A subscription that quietly stops renewing looks exactly like a customer who lost interest. By the time anyone notices, the revenue is already gone — and the customer relationship with it.

01

Signature-Verified Webhooks

Every inbound event is verified as genuine before it touches your data.

02

Idempotency Everywhere

Events arrive twice, out of order, and occasionally not at all. Every operation is safe to repeat, so a duplicate delivery can never double-charge or double-record.

03

Queued Processing with Retries

Events are acknowledged fast and processed asynchronously, with retry logic and a dead-letter queue for anything that keeps failing. Nothing is dropped silently.

04

Reconciliation as a Backstop

A scheduled comparison between provider records and your database, flagging any difference. If a webhook is missed, this catches it.

05

Visibility Built In

An event log showing every payment event and its outcome, plus alerts when something needs attention. You can see what your payment system is doing without asking me.

Who I Work With

Teams That Have Outgrown a Basic Integration

I work best with early-stage SaaS companies and subscription businesses handling real complexity:

Real transaction volume, multiple currencies or providers

A billing model that no longer fits an off-the-shelf connector

A founder or CTO who could build this themselves — but would rather their engineering time went into the product

Someone who has already discovered that payments contain more edge cases than the documentation suggests

How I Work

Working Software, Not Proposals

Phased Delivery

A scoped first phase that is small, independently useful, and delivered quickly. You judge working software rather than a proposal, then decide on the next phase.

Honest Scoping

If an existing connector or no-code tool covers part of what you need, I'll tell you. Custom work is for the parts where accuracy genuinely has to be guaranteed.

You Own What I Build

Hosting sits in your account. Documentation is written so another developer can pick it up. I build systems clients can maintain, not dependencies.

Direct Senior Attention

You work directly with me — the person building your integration — not an account manager relaying messages to a junior team.

Experience

17+ Years Building Backend and Payment Systems

For clients across the US, UK, Europe and Australia. My payment gateway work spans Stripe, Authorize.Net and PayPal, with recurring and subscription billing, WooCommerce, and API and CRM integration including HubSpot.

17+

Years of backend & payment systems

3+

Gateways: Stripe, Authorize.Net, PayPal

1,000+

Monthly recurring clients on one build

~90%

Admin effort reduced vs manual process

Recent Work

A complete recurring billing infrastructure on Authorize.Net for an agency managing over 1,000 monthly recurring clients — tokenised payments, subscription lifecycle, webhook automation with idempotency, failed-payment recovery and reconciliation, integrated with HubSpot for consistent customer data.

Replaced a manual process · ~90% less administrative effort

Start with a Conversation

Tell me what your payment setup looks like now and where it hurts. I'll tell you honestly what needs custom work, what doesn't, and where your current integration is most likely to fail quietly.

No pitch. If you don't need me, I will say so.