Senior Software Engineer at cyclopsio

Language

Setup: Remote - Argentina
Type: Contract
Level: not_specified
Posted: Jul 14, 2026

Description

Cyclops is seeking a Senior Software Engineer with a strong backend background to design and implement backend-heavy features using TypeScript and Node.js. The role involves building and evolving REST APIs, working with PostgreSQL for data modeling, and taking full ownership of services from requirements to production support. The engineer will also own production behavior, improve observability, participate in technical discovery, collaborate with Product and EM teams, and contribute to React code when necessary.

Required Skills

TypeScript
Node.js
REST APIs
SQL
PostgreSQL
microservice architectures
HTTP APIs
AI coding tools

Additional Information

Required Previous Experiences: 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 specifications
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 Qualifications: 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)