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Senior Backend Engineer - AI Products

Blackfluo.aiУдалённо · Portugal

Location: 100% Remote Start date: ASAP Languages: Fluent English (required)

Who This Role Is For

If youve 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.

Were 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 youve helped startups scale, youll feel at home here.

What Youll Do

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Build and scale backend services using Python, Go, or Node.js

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Contribute to full-stack features with TypeScript + React where applicable

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Design APIs, real-time pipelines, and distributed systems for production workloads

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Collaborate with product, design, and engineering teams to deliver end-to-end solutions

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Write clean, maintainable, and testable code

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Influence architecture, tooling, and best practices in a fast-growing startup environment

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Leverage AI-assisted development tools like Cursor to speed up workflow

What Were Looking For

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4+ years of experience as a backend or full-stack engineer

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Strong in Python, Go, or Node.js

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Familiarity with frontend frameworks (React/TypeScript) is a plus

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Experience in VC-backed startups or scale-ups

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Comfortable with cloud environments (AWS, GCP, Azure)

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Strong fundamentals: distributed systems, APIs, databases

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Collaborative, self-driven, and able to thrive in a fast-moving startup environment

Bonus Points

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Experience in fintech, payments, or AI-assisted tooling

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Exposure to event-driven architectures (Kafka, RabbitMQ, Pub/Sub)

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Experience contributing to developer tooling or internal frameworks

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Interest in using Cursor or other AI coding tools

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Prior scale-up experience with high-growth products

Why This Role Will Pivot Your Career

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High impact: Build production systems used by real customers in high-growth startups

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Ownership & autonomy: Take responsibility for features end-to-end

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VC-backed scale-up experience: Gain exposure to rapid growth, high stakes, and technical excellence

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Cutting-edge stack: Work across Python, Go, Node.js, TypeScript/React, and AI-assisted tools

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Career leverage: Opportunity to grow into lead, staff, or architect-level roles with visibility to senior leadership

Originally posted on Himalayas

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