Backend Engineer

Axra; United States; Remote; USD 93,000 - 119,000; Full time

Benefits offered by this job

Remote-first work across countries

Learning budget

Health coverage for employees and deps

Stock options

Job summary

Axra is seeking a senior backend engineer to build and operate services for international transfers, currency conversion, account management, and payments. You will own services from design through production, emphasizing correctness, security, and reliability in a distributed financial platform.

You will design APIs and microservices, integrate with payment and banking partners, add tests and observability, and mentor junior engineers in a remote-first, multi-country setup.

Qualifications

• Four+ years building production backend systems at scale.
• Strong experience with Node.js or Go.
• Deep knowledge of PostgreSQL including schema design and tuning.
• Experience developing and integrating payment APIs.
• Understanding distributed system patterns: queues, retries, idempotency, eventual consistency.
• Security awareness including common injection, CSRF and auth risks.

Responsibilities

• Design APIs, microservices, and background workers for transfers and account services.
• Integrate with payment, banking, and FX partners.
• Add tests, monitoring, and SLIs to keep systems observable and reliable.
• Partner with compliance to address regulatory needs.
• Review code, shape architecture, and support junior engineers.

Skills

Backend development

Node.js/Go

Distributed systems

Security awareness

Testing & observability

Tools

PostgreSQL

Redis

Message queues

Event-driven systems

Job description

Role overview

Build and operate backend services that support international transfers, currency conversion, account management, and payment processing. You will own services from design through production, with a focus on correctness, security, and reliability across a distributed financial platform.

Responsibilities

• Design APIs, microservices, and background workers for transfers and account services.
• Integrate with payment, banking, and foreign exchange partners.
• Add tests, monitoring, and service-level objectives to keep systems observable and reliable.
• Partner with compliance colleagues to address market-specific regulatory needs.
• Review code, shape architecture practices, and support junior engineers.

Requirements

• At least four years building production backend systems at scale.
• Strong experience with Node.js or Go; familiarity with both is useful.
• Deep knowledge of PostgreSQL, including schema design and query tuning.
• Experience developing and integrating payment APIs.
• Understanding of distributed system patterns such as queues, retries, idempotency, and eventual consistency.
• Security awareness, including common injection, request forgery, and authentication risks.

Nice to have

• Experience with ledgers, financial systems, or double-entry accounting in software.
• Familiarity with PCI-DSS, GDPR, or financial regulation.
• Experience with Redis, message queues, or event-driven systems.
• Work on multi-currency or FX products.

Benefits and work setup

• Remote-first work across multiple countries.
• Annual learning budget, health coverage for employees and dependants, and work equipment.
• Stock options with a four-year vesting schedule and one-year cliff.
• Stated salary range of £70,000-£90,000, reviewed every six months.