Senior Software Engineer (Remote)

Cyclops enables payments companies to onboard with a single partner, unlocking stablecoin settlement, payins, payouts and treasury optimization across global corridors – all through a single API. They are looking for a Senior Software Engineer with a strong backend background to take ownership of technical solutions, collaborate with product managers, and contribute to platform evolution.

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

Requirements:

• 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
• 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)