9 months ago
Base Salary
$140k - $190k/yr
Responsibilities
- Design and implement high-throughput, reliable payment processing systems
- Build merchant-facing APIs and SDKs for platform integrations
- Develop fraud detection and risk management features using real-time data analysis
- Architect and optimize systems for performance, reliability, observability, database queries, caching, and service communication
- Instrument services for monitoring, alerting, and production debugging
- Deliver features end-to-end from technical design through deployment and iteration
- Collaborate with Product and Design on technical solutions
- Contribute to architecture, tooling, engineering practices, and team culture
- Mentor engineers through code review, pairing, and knowledge sharing
Requirements
- 5+ years of professional software engineering experience
- Strong proficiency in TypeScript and Node.js; React experience is a plus
- Deep understanding of REST API design, relational and document databases, especially MongoDB, and distributed systems concepts
- Experience building systems that handle high transaction volumes or strict correctness requirements
- Comfort with cloud infrastructure such as AWS or GCP and containerized deployments
- Track record of shipping and maintaining production systems
- Ability to communicate technical tradeoffs clearly with engineers and non-engineers
- Payments, fintech, or blockchain/crypto experience is a bonus
Benefits
- Health and wellness benefits
- 401(k) savings plan
- Flexible time off
- Eligible for an equity grant
Tech Stack
Categories
About Coinflow
Coinflow is a Chicago-based payment service provider for marketplaces, fintechs, remittance providers, gaming platforms, and e-commerce merchants, offering instant settlement using stablecoins. Its platform combines global pay-ins, multi-currency FX, unified payouts, AI-driven fraud prevention, and chargeback indemnity, sold via transaction-based processing. Founded in 2023, Coinflow announced a Series A led by Pantera Capital in October 2025.