Senior Software Engineer (Remote)

About the role

Role Overview

We are looking for a Senior Software Engineer with a strong backend background, comfortable in a product-driven environment with changing priorities and a high level of ownership. This is a backend-first role (~70%) with occasional frontend tasks (~30%) when features require touching UI or integrating SDKs. Success means owning the technical side end-to-end: shaping technical solutions under uncertainty, taking responsibility for system behavior in production, and contributing to long-term platform evolution alongside Product Managers, the Engineering Manager, and other senior engineers.

Key Responsibilities

Design and implement backend-heavy features using TypeScript and Node.js; build and evolve REST APIs with focus on correctness, consistency, and clear boundaries between services

Work with SQL (PostgreSQL): data modeling, migrations, and consistency guarantees

Take full ownership of one or more services, from requirements and implementation to production support, and drive integration work with external partners (vendors, clients) when needed

Own production behavior: investigate incidents, debug API failures, analyze data issues, and apply reliability patterns (timeouts, retries, idempotency, graceful degradation)

Improve observability (logs, metrics, visibility into system behavior) and propose improvements where reliability, performance, or monitoring is weak

Participate in tech spikes: explore unclear problems and turn them into concrete technical plans

Collaborate with Product and EM to clarify requirements and reduce ambiguity early; contribute to technical discussions, raise risks, and explain trade-offs

Review code, mentor mid-level engineers, and contribute to React code when features require UI updates or customer-facing flows

Required Qualifications

4+ years of professional software development experience

Strong backend expertise with TypeScript and Node.js

Real production experience: incidents, debugging, API failures, data issues

Experience owning a service end-to-end, from requirements to production support

Clear product-level architectural thinking: well-designed APIs, correct data boundaries, proper error handling, ability to reason about trade-offs

Understanding of microservice architectures and platform-level interactions

Strong knowledge of HTTP APIs, SQL data modeling, and common failure modes

Proficient daily use of AI coding tools (e.g. Claude Code), with the ability to review AI-generated code quickly and critically

Readiness to build deep working knowledge of crypto and stablecoin payments: prior crypto experience is optional, and deep on-the-job learning of the domain is a mandatory part of the role

Ability to work with ambiguity: ask the right questions and structure unclear problems, working independently without overly detailed technical specs

High agency: you notice problems before they are assigned to you, raise risks early, and bring a proposed solution together with the problem

Strong written and verbal communication in English

Preferred Experience

Experience in fintech, crypto, payments, high-load or high-reliability systems

Practical understanding of reliability patterns: retries, timeouts, idempotency, fallback strategies

Experience with queues or messaging systems (Kafka, RabbitMQ, SQS, BullMQ, etc.)

Experience with Redis or other key-value stores

Familiarity with Docker and Kubernetes (user-level understanding is enough)

Basic understanding of AWS capabilities

Experience with React (UI tasks, integrations, SDKs)

Reporting Structure

Reports to the Engineering Manager. No direct people management responsibilities.

Location

Remote. USA, Argentina, or Brazil. The role works US business hours (Eastern Time).

Compensation and Benefits

As an independent contractor, you'll enjoy the flexibility to determine how and when you deliver your work, while partnering closely with our team to meet agreed milestones and business objectives. Compensation and engagement terms will be outlined in your contractor agreement.

Additional Benefits

Company issued laptop

Technology Accessories

Annual In-Person Full-Team Meetup

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Remote Matched in posting text

Seniority

senior From the job title

Employment type

Not established

Location as listed

Miami, FL, United States

Pay and work authorization

Stated pay

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