[Hiring] Senior Backend Engineer @Blackfluo.ai

Role Description

If you've shipped scalable systems at AI or fintech startups, thrived in VC-backed environments, or built features that thousands of users rely on, this role is for you. We're looking for engineers who love full ownership, complex technical challenges, and seeing their work directly impact product and company growth. Whether your expertise is Python, Go, Node.js, or full-stack with React/TypeScript, if you've helped startups scale, you'll feel at home here.

What You'll Do

• Build and scale backend services using Python, Go, or Node.js
• Contribute to full-stack features with TypeScript + React where applicable
• Design APIs, real-time pipelines, and distributed systems for production workloads
• Collaborate with product, design, and engineering teams to deliver end-to-end solutions
• Write clean, maintainable, and testable code
• Influence architecture, tooling, and best practices in a fast-growing startup environment
• Leverage AI-assisted development tools like Cursor to speed up workflow

Qualifications

• 4+ years of experience as a backend or full-stack engineer
• Strong in Python, Go, or Node.js
• Familiarity with frontend frameworks (React/TypeScript) is a plus
• Experience in VC-backed startups or scale-ups
• Comfortable with cloud environments (AWS, GCP, Azure)
• Strong fundamentals: distributed systems, APIs, databases
• Collaborative, self-driven, and able to thrive in a fast-moving startup environment

Bonus Points

• Experience in fintech, payments, or AI-assisted tooling
• Exposure to event-driven architectures (Kafka, RabbitMQ, Pub/Sub)
• Experience contributing to developer tooling or internal frameworks
• Interest in using Cursor or other AI coding tools
• Prior scale-up experience with high-growth products

Why This Role Will Pivot Your Career

• High impact: Build production systems used by real customers in high-growth startups
• Ownership & autonomy: Take responsibility for features end-to-end
• VC-backed scale-up experience: Gain exposure to rapid growth, high stakes, and technical excellence
• Cutting-edge stack: Work across Python, Go, Node.js, TypeScript/React, and AI-assisted tools
• Career leverage: Opportunity to grow into lead, staff, or architect-level roles with visibility to senior leadership