Blackfluo.ai
Senior Fullstack Engineer - AI Products
Blackfluo.aiLithuania4 hours ago
Full-timeRemote FriendlyEngineering, Information Technology
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

  • 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


What Were Looking For

  • 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


Pragmatike is an Equal Opportunity Employer and is committed to providing equal employment opportunities to all applicants without discrimination. We recruit on behalf of our clients and prohibit discrimination and harassment based on race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.We are committed to a fair and inclusive hiring process. We process your personal data solely for recruitment purposes, in accordance with applicable privacy laws, and maintain reasonable safeguards to protect your information. Your data may be shared with our client(s) for hiring consideration, but will not be disclosed to third parties outside of the recruitment process.

Key Skills

Ranked by relevance
Apply