Senior Backend Developer (Node.js and Python)

About Us We're a company with a startup soul operating in the proxy and web scraping industry for 10 years.

We move fast, we experiment, and we're not afraid to change course when something's not working.

Pivoting isn't a failure for us — it's how we grow and learn.

Who We’re Looking For A Senior Backend Developer who thrives on solving complex performance and scalability problems in Node.js and Python environments .

You’ll join a small, fast-moving team building the backbone of our proxy and data infrastructure.

You’ll collaborate closely with other developers - focusing on coding, optimization, reliability, and end-to-end ownership - including deployment, monitoring, and infrastructure setup.

There is no better person to explain the role than our CEO; please click and listen 🤗 Click the video If the video link is not there, please check the career page on our website rayobyte .com Why Join Us?

Join the stable & profitable company : Many years of healthy growth, no VC pressure.

Work at a huge scale : 300 + servers across 6 continents, petabytes of data, billions of requests every day.

Shape critical parts of the system : Contribute to architecture decisions, improve core services, and help evolve our stack Code first : You write and review production code daily, owning features end-to-end.

Try new ideas : We welcome experiments and fresh thinking.

Work from anywhere : 100 % remote; plan your day with overlap for team sync in the CET time zone.

Open feedback culture : Clear communication and constant improvement.

Good pay & benefits : We reward great work.

Our Tech Stack Node.js + JavaScript (most code) MySQL / PostgreSQL Dockers Python (smaller helper scripts) What You’ll Do Build & Scale High-Impact Systems with a Modern, Low-Level Approach Optimize high-traffic Node.js services for vertical and horizontal scaling (thousands of RPS).

Deep dive into performance bottlenecks and squeeze every millisecond out of the stack.

Work directly with self-managed infrastructure handling terabytes of data - no “click-to-scale” cloud abstractions here.

You’ll be involved in deploying, scaling, and monitoring the services you build, using a DevOps mindset Embrace AI-Assisted Development to Revolutionize Workflow Use tools like GitHub Copilot, Cursor, and other AI coding helpers to boost quality and speed.

Experiment with emerging AI solutions and share learnings across the team.

Continuously refine processes so we ship smarter, not just harder.

Own Critical Problems End-to-End in a Fast-Paced SaaS Environment Take full ownership of complex technical challenges - from design to production fix.

Diagnose and resolve critical system or customer-facing issues with autonomy and urgency.

Thrive in a dynamic startup setting where results matter more than process for process’s sake.

What Does the Ideal Candidate Have for the Role?

Minimum 4+ years of experience with Node.js in backend development ( + some Python experience ).

Proven track record of working with high-traffic platforms and scalable systems .

Comfortable or open to operating outside managed cloud - bare-metal, self-hosted, or hybrid setups.

Experience working in a fast-moving startup environment Strong problem-solving skills , curiosity, and adaptability to translate business needs into technical solutions.

Hands-on experience with Docker, Linux environments, and basic system administration.

Open to adopting AI -assisted coding tools and modern development practices.

English - communicative level (B2) Our Hiring Process Apply – Fill the short questionnaire + submit your CV.

HR Chat (≈ 60 min).

Tech Interview (60-90 min) with VP of Tech.

Chat with the CEO (30 min).

Offer – If we’re a match, welcome aboard!   Apply now and join our remote team!

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