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kintsubyte / payments

KINTSUBYTE / PAYMENT ENGINEERING

Payments should
be built for
the unexpected.

Reliable integrations. Recoverable workflows. Records that agree. Practical engineering for the moments after the happy path ends.

Discuss your payment workflow Explore services

Led by Bo Osinupebi · Toronto, Canada

THE RECOVERY PATHIllustrative example
ProcessorAccepted
ApplicationAwaiting update

Payment accepted

The processor accepts a synthetic payment. The application still needs to record the result.

Synthetic workflow. No processor connection or live payments.

STRIPE INTEGRATIONSIDEMPOTENCY & RETRIESRECOVERABLE STATESRECONCILIATION

01 / THE ENGAGEMENTS

A clear scope.
A useful next step.

Start with a focused review, bring a stalled integration over the line, or automate the checks that keep your records consistent.

01A clear starting point

Payment reliability review

A focused diagnostic of one payment workflow or integration, covering the paths where processor actions and application records can drift apart.

CA$2,500fixed scope
  • Review payment states, webhook handling, retries, idempotency, and reconciliation paths.
  • Identify high-risk failure cases and gaps in recovery behaviour.
  • Deliver prioritized findings and a practical remediation plan.
Explore the engagement
02Hands-on delivery

Integration build or rescue

Hands-on backend delivery for a defined Stripe, external API, or data integration that needs to be shipped, repaired, or made easier to operate.

From CA$7,500per project
  • Agree milestones, acceptance criteria, and system boundaries before implementation.
  • Build or repair integration behaviour, including retries and recoverable state transitions where needed.
  • Add targeted automated coverage around critical behaviours.
Explore the engagement
03Ongoing improvement

Reconciliation and quality automation

Practical SQL, API, and test automation that helps teams find mismatches, reduce repetitive checks, and protect critical workflows as they change.

From CA$1,500per month
  • Map the current reconciliation or quality-control workflow.
  • Automate high-value checks across application, processor, and reporting data.
  • Add regression coverage for the business behaviours that matter most.
Explore the engagement

All prices are in Canadian dollars. Scope, timing, taxes, and third-party costs are confirmed before work begins.

02 / EXPERIENCE & INDEPENDENT WORK

Grounded in the work.

Professional payment engineering experience, backed by an independent demonstration you can inspect.

PROFESSIONAL EXPERIENCE

Keeping processor actions and application records consistent.

Bo designed Stripe payment flows supporting more than CA$1M in gross volume in their first six months. The work covered idempotency, recoverable state transitions, retries, and reconciliation.

Experience from prior professional work, presented in aggregate. Client identity and implementation details remain confidential.

Read the payment systems note
INDEPENDENT C# DEMONSTRATION

Recovery you can reason about.

Synthetic invoices and a fake processor demonstrate durable intent, idempotent retries, restart recovery, and reconciliation. The demonstration contains no employer implementation.

Explore the recovery demonstration

03 / HOW WE WORK

01

Understand the failure path.

Share the systems involved, the triggering problem, and the outcome your team needs.

02

Agree the boundaries.

Define the scope, deliverables, milestones, and acceptance criteria before implementation.

03

Leave the team with clarity.

Receive prioritized findings or working software, targeted verification, and practical handover notes.

GOOD QUESTIONS

Before we begin.

Who is this work for?

SaaS teams and software agencies with a payment, backend integration, reconciliation, or regression automation problem that can be scoped to a clear outcome.

Where should we start?

A Payment Reliability Review is a focused starting point when the risks need diagnosis. If the implementation is already well defined, an integration build or rescue may be the more useful engagement.

Who will do the work?

The work is led by Bo Osinupebi through Kintsubyte. His engineering profile and the independent recovery demonstration are linked here so you can review the relevant background.

How are payment details handled?

Begin with a description of the workflow and the problem. Access requirements and handling of sensitive material are agreed as part of the engagement scope.

LET US START WITH THE PROBLEM

Where does your
payment workflow break?

Share the context, timeline, and systems involved. We will work out the most useful next step.

Discuss a project bolarinwa@kintsubyte.com