Senior Backend Engineer specializing in Payments

maxanaRemote — Colombia

Remote Contract

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Experience Level

Senior

Qualifications

6+ years of backend development experience with strong proficiency in at least one programming language such as Node.js, Java, Python, or Go. Proven track record in REST API integration and webhook processing, with essential expertise in the payments domain.

About the job

Location: Fully Remote (U. S. time zone overlap preferred)
Type: Contract (Full-Time Preferred)
Domain: Payments / Fintech / eCommerce Infrastructure

About the Project

Join us in our ambitious drive to modernize a rapidly growing digital commerce platform that emphasizes payment orchestration, gateway optimization, and API-driven architecture.

While familiarity with orchestration platforms like Gr4vy, Stripe, etc. is advantageous, it is not a prerequisite. However, extensive experience in the payments field is essential.

About the Role

We are looking for a seasoned Backend Engineer to spearhead our payment modernization initiative. You will collaborate closely with the CTO to develop and integrate sophisticated payment orchestration systems and establish direct connections to Payment Service Providers (PSPs).

Responsibilities

Build and maintain API integrations with various PSPs.
Implement intelligent payment routing logic.
Develop robust webhook handlers.
Implement secure tokenization flows.
Support complex subscription billing logic.
Ensure system resilience, observability, and effective error handling.

Requirements

Minimum 6 years of backend development experience.
Proficient in one or more programming languages:

Node.js
Java
Python
Go

Extensive experience in REST API integration.
Solid knowledge in webhook processing.
Proven expertise in the payments domain is mandatory.
Strong understanding of:

Authorization/Capture flows.
Refund management.
Chargeback lifecycle.
Subscription billing.

Benefits

High-impact architecture project.
Executive visibility on project outcomes.
Competitive contract compensation.
Flexible remote work structure.
Defined project scope and timelines.
Opportunity for long-term engagement.
Technical ownership of your work.

About maxana

maxana is at the forefront of innovation in the payments and fintech sectors, driving modernization efforts for digital commerce platforms. Our focus on cutting-edge payment technologies positions us as industry leaders.

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