Full-Stack Developer (Node.js, JavaScript, TypeScript)

Action1

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Location: Poland, Montenegro, Germany, Portugal
Job Type: full-time
Salary: Unknown
Posted: March 18, 2026

Job Description

Action1 is an autonomous endpoint management platform trusted by many Fortune 500 companies. Cloud-native, infinitely scalable, highly secure, and configurable in 5 minutes—it just works and is always free for the first 200 endpoints, with no functional limits. By pioneering autonomous OS and third-party patching with peer-to-peer patch distribution and real-time vulnerability assessment without needing a VPN, it eliminates routine labor, preempts ransomware and security risks, and protects the digital employee experience.

In 2025, Action1 was recognized by Inc. 5000 as the fastest-growing private software company in America. The company is founder-led by Alex Vovk and Mike Walters, American entrepreneurs who previously founded Netwrix, a multi-billion-dollar cybersecurity company.

We are stepping into an exciting growth stage and are looking for a Full Stack developer to join our amazing development team.

You will:

Develop and maintain frontend part of the product
Develop API and backend for a high-load product with numerous endpoints
Write unit and integration tests for both frontend and backend
Refactor code and improve application performance

Requirements:

3+ years of software development experience
Excellent knowledge of Node.js, JavaScript, TypeScript, ReactJS
Experience in designing and developing REST APIs
Proficiency in working with databases (DynamoDB, MySQL)
Experience writing tests
Good knowledge of AWS (Lambda, EC2)
Readiness to support legacy PHP code

We offer:

Fully remote work, giving you the flexibility you need in the modern world
A multitude of interesting challenges and opportunities
Stable income and flexible working hours, opportunities for promotion
Friendly and professional peers, eager to help and help you grow

Join Action1 and be a driving force behind our success!

🎯 Who is this job for?

This is a mid-level full-stack role focused on React, Node.js, and TypeScript, where you’ll build both frontend interfaces and backend APIs, work with AWS and databases, and occasionally handle legacy PHP code; it’s a solid, practical position for someone with ~3–5 years of experience looking for stable remote work and real product impact, though it’s less focused on advanced architecture, cutting-edge UI, or AI-driven development.

💬 Potential Interview Questions

How would you design a scalable full-stack system for a high-load endpoint management platform?
I would design a service-oriented architecture with scalable APIs, efficient database access, and asynchronous processing for heavy tasks. Leveraging cloud services like AWS ensures high availability and horizontal scalability.
How do you design and implement REST APIs for systems with many endpoints?
I structure APIs with clear resource-based endpoints, consistent naming, and proper versioning. Strong validation, pagination, and error handling ensure reliability and maintainability.
How do you optimize performance in a high-load Node.js application?
I reduce blocking operations, use asynchronous patterns, implement caching, and optimize database queries. Monitoring and profiling help identify bottlenecks and guide improvements.
What is your approach to handling both modern and legacy code (e.g., PHP)?
I isolate legacy components behind stable interfaces and gradually refactor them where possible. This allows improvements without disrupting existing functionality.
How do you ensure code quality across both frontend and backend systems?
I enforce coding standards, conduct code reviews, and write unit and integration tests. Automated pipelines help maintain consistency and prevent regressions.
How do you work with databases like MySQL and DynamoDB in a scalable system?
I design schemas based on access patterns, optimize queries, and use indexing effectively. For NoSQL, I focus on partitioning strategies and efficient key design.
How do you structure a React frontend for a complex product interface?
I organize code into reusable components and feature modules, separating UI from business logic. This improves maintainability and scalability.
How do you approach testing in a full-stack application?
I write unit tests for logic, integration tests for APIs, and end-to-end tests for critical workflows. This ensures confidence across the entire system.
How do you leverage AWS services like Lambda and EC2 in application design?
I use Lambda for event-driven or serverless tasks and EC2 for long-running services. Choosing the right service helps balance cost, scalability, and performance.
How do you handle debugging and incident resolution in production systems?
I analyze logs, monitor system metrics, and trace requests across services to identify root causes. Quick fixes combined with long-term improvements help maintain system stability.

📋 Job Summary

Action1, a rapidly growing cybersecurity company recognized on the Inc. 5000 list, is hiring a Full-Stack Developer to build and scale its autonomous endpoint management platform trusted by Fortune 500 clients. You’ll develop high-load APIs and frontend features using Node.js, TypeScript, React, AWS (Lambda, EC2), and DynamoDB/MySQL, contributing across the full stack while improving performance and reliability. This is a fully remote role across Europe with a stable salary, flexible hours, and strong growth opportunities. Join a fast-moving team tackling real-world security challenges, where your work directly impacts product scalability and innovation.