Senior Backend Engineer

NXOPAY; United States; Remote; USD 140,000 - 200,000; Full time

Benefits offered by this job

Globally remote

Job summary

NXOPAY is seeking an engineering leader to build and operate core backend services for financial transactions. You will focus on ledgering, orchestration, and settlement integrity while ensuring correct behavior under concurrency and failure and enabling regulatory review.

You will own design choices, craft reliable data contracts, and take production responsibility for services, collaborating across teams in a globally distributed environment.

Qualifications

• Extensive experience building transactional backend systems at scale.
• Fluency in a strongly typed programming language and relational data modeling.
• Ability to preserve correctness through concurrency and failure scenarios.
• Clear written communication and documenting technical decisions.

Responsibilities

• Design and run ledgering, orchestration, and settlement services.
• Build idempotency, reconciliation, and auditability into service design.
• Define reliable data contracts for other teams to use.
• Take production ownership of services, including their ongoing operation.

Skills

Transactional systems

Strongly typed language

Relational data modeling

Concurrency and failure handling

Clear written communication

Job description

Role overview

Build and operate core backend services that move, record, and settle financial transactions. The work centers on ledgering, orchestration, and settlement integrity, with a strong emphasis on correct behavior under concurrency and failure and records that can support regulatory review.

Responsibilities

• Design and run ledgering, orchestration, and settlement services.
• Build idempotency, reconciliation, and auditability into service design.
• Define reliable data contracts for other teams to use.
• Take production ownership of services, including their ongoing operation.

Requirements

• Substantial experience building transactional backend systems at scale.
• Fluency in a strongly typed programming language and relational data modeling.
• Demonstrated ability to preserve correctness through concurrency and failure scenarios.
• Clear written communication, including documenting technical decisions.

Benefits and work setup

This is a full-time, globally remote role open regardless of candidate location. Candidates must be available for the daily overlap window of 14:00–18:00 GMT+4. Evaluation includes a backend work sample and a discussion of ledger integrity and failure handling.