Payment Integration Engineer

Seniority level: Mid-Senior level | Employment type: Full-time | Industries: IT Services and IT Consulting

About The Role

We are an international broker. Our clients fund and withdraw through approximately 60 payment methods across Asia, Africa, LATAM, and the Middle East.

Payments Product is now a standalone function, and we are building the team around it. This is an early core hire.

We are looking for a Payment Integration Manager who will own payment integrations end to end—from the initial technical call with a provider through to stable production.

You will also be the first line of response for every payment incident and the person responsible for deciding whether a new integration is ready to go live.

This is a technical operations role rather than a coordination role.

Key Responsibilities

Payment Provider Onboarding & Integration

Manage the full onboarding cycle for new payment providers, including:

Initial technical calls

Credentials and sandbox access

Configuration and test design

User Acceptance Testing (UAT)

Production launch

Post-release stabilisation

Define integration acceptance standards and own the go/no-go decision before launch

Review provider API documentation and translate it into implementation-ready specifications for engineering, covering edge cases, failure paths, and confirmation model behaviour

Payment Incident Management

Own the first-line response for payment incidents, including:

Failed and stuck transactions

Unconfirmed payments

Payment method-level anomalies

Investigate and drive incidents to resolution rather than simply escalating them

Diagnose provider-side versus platform-side issues using logs, API responses, and transaction data

Communicate findings clearly to providers, engineers, and internal stakeholders

Technical Testing & Verification

Perform hands-on verification of payment integrations

Conduct manual checkout testing across mobile and desktop

Verify callbacks and API behaviour using Postman or equivalent tools

Execute SQL queries to investigate transaction data

Validate asynchronous payment statuses, confirmation models, redirect flows, and failure scenarios

Payment Method & Provider Catalogue

Maintain a comprehensive catalogue of payment methods and providers, documenting:

Supported capabilities

Available integration types

Completed testing

Known failure modes

Build the initial capability inventory of all live payment methods and providers

Convert ambiguous provider documentation and undocumented operational knowledge into actionable specifications

Payment Performance Analysis

Produce a 90-day breakdown of deposit attempts, categorised by outcome:

Completed transactions

Declined by the provider

Abandoned by the user

Abandoned during redirect

Completed but never confirmed back to the platform

Requirements

Essential Qualifications & Experience

4+ years of experience in payments, PSP integrations, or fintech platforms, with hands-on ownership of integrations rather than coordination alone

Working knowledge of APIs, webhooks, asynchronous payment statuses, callback mechanics, confirmation models, redirect flows, and common failure modes

Ability to review provider API specifications and identify missing information

Experience using Postman or equivalent tools for API testing

Experience performing structured checkout testing across mobile and desktop

Proven ability to investigate live payment incidents using logs and API responses

Ability to distinguish provider-side issues from platform-side problems

Experience translating incomplete or ambiguous technical documentation into clear specifications for engineering

Strong communication skills and composure during incidents

Basic knowledge of using AI tools in daily work

Working proficiency in both English and Russian, as both languages are used daily

What Success Looks Like in the First Year

First Few Months — Operational Ownership

Take ownership of first-line payment incidents, build the payment method and provider catalogue using documentation and direct investigation, and produce the 90-day deposit attempt analysis

By Mid-Year — Integration Acceptance Standards

Establish the integration acceptance framework and apply it to a live provider onboarding process, from initial engagement through production launch

Second Half — Established Processes & Decision-MakingAs the team expands, a Systems Analyst will assume responsibility for formal verification, while the integration acceptance gate remains under your ownership

Maintain an accurate and up-to-date provider catalogue, ensure the integration acceptance gate is fully operational, and take ownership of incident-related decisions

Recruitment Process

Our recruitment process consists of four stages:

HR Interview: Background, motivation, and overall role alignment

Technical Interview: Payment integration knowledge, technical tools, hands-on experience, and incident diagnosis

Product & Problem-Solving Interview: Integration decisions, prioritisation, and practical problem-solving

Final Interview: Discussion with senior stakeholder

Benefits

Fixed monthly compensation of [depending on experience]

Fully remote work within GMT to GMT+4, with no relocation required

End-to-end ownership of a provider from first call to production, and the go or no-go decision on every integration

Scope that grows with the business: cards, alternative payment methods, a card programme and new entities

Corporate AI tooling as part of the working process