We are looking for a Staff Software Engineer to join an early-stage fintech company building a next-generation payments platform designed to power billions in transaction volume. This role is ideal for a senior backend engineer who thrives in high-ownership environments and enjoys shaping system architecture from the ground up. You will play a critical role in designing and scaling core platform components that support high-value financial transactions. The position requires deep Python expertise and strong systems thinking, particularly in building robust, secure, and scalable payment infrastructure. You will work closely with the CTO and founding team, owning key initiatives from conception through production deployment. This is an opportunity to help build the technical foundation of a rapidly scaling financial technology platform.
Details
Location: NYC (remote flexibility available)
Work Model: Remote / Hybrid (NYC-based company)
Employment Type: Full-time
Seniority Level: Staff
Industry: Financial Technology / Payments
Start Date: ASAP
Key Responsibilities
Own and ship core components of the payments platform
Design and implement scalable, secure backend architectures
Develop and maintain customer-facing APIs
Architect systems capable of handling high transaction volumes
Maintain high standards for reliability, performance, and code quality
Collaborate closely with the CTO and engineering team on technical strategy
Contribute to technical roadmap decisions during hyper-growth scaling
Debug, optimize, and continuously improve backend systems
Requirements
5+ years of professional software engineering experience
Strong production experience with Python (required)
Experience building and scaling backend systems
Strong system design and architectural thinking
Experience shipping production-grade APIs
Ability to operate autonomously in an early-stage environment
Strong communication and collaboration skills
Nice to Have
Experience with Django
Experience with AWS services
Experience with PostgreSQL and Redis
Prior fintech or payments experience
Experience building, maintaining, and debugging backend systems at scale
Interview Process
Initial call with Founder (30 minutes)
Technical take-home assignment
Take-home review with two engineers
Onsite behavioral/culture interview with co-founders
Reference checks
Offer