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Monthly
€13,022 - €18,990
Posted October 27, 2025 · 304 days agoLast seen August 26, 2026Est. expiry December 1, 2025

Senior JavaScript Developer

Remote - Global
Remote · Technology
Full-time · Senior
English
No People Management
Bachelor
How this salary compares
Salary Context: Senior JavaScript Developer

Hover or tap a row for full statistics (EUR / month on this chart).

Salary analysis

Compared with the selected benchmark ("In Remote - Global: Senior JavaScript Developer"), this listing's salary midpoint is about 15% higher. The offer still falls within the benchmark range (€13,022–€18,990). The offer's range width is broadly in line with the benchmark. This benchmark is based on 1 comparable listings.

Monthly salary comparison for Senior JavaScript Developer
MarketLower bound (25th percentile)MedianUpper bound (75th percentile)
Market Average: Senior JavaScript Developer€13,022/per month€16,006/per month€18,990/per month
In Remote - Global: Senior JavaScript Developer€13,022/per month€16,006/per month€18,990/per month
From job ad (Senior)€15,000/per month€18,438/per month€21,875/per month
About the role

We are seeking a highly skilled Staff JavaScript Developer to design, build, and optimize our Web SDK. This SDK will be at the core of our solutions for device fingerprinting, identity verification, and behavior analytics, enabling our customers to stay ahead in the ever-evolving fraud prevention landscape. This is not a UI or App development role, this is building SDKs for detecting fraud by analyzing device and behavioral properties. This requires deep understanding of the platform internals. As a Staff Developer, you will lead the design, development, and performance optimization of our Web SDK, leveraging your deep expertise in JavaScript, TypeScript, and modern web technologies.

Job Details

Responsibilities

  • Lead the development and maintenance of a high-performance Web SDK for collecting and analyzing browser and device-related data
  • Design and implement algorithms to create unique device fingerprints and capture behavior-based insights
  • Build and maintain a robust CI/CD pipeline with automated cross-browser testing and release cycles
  • Continuously optimize SDK performance to minimize resource usage and ensure a seamless user experience
  • Collaborate with cross-functional teams to meet high-quality standards and customer requirements
  • Ensure data privacy and security principles are embedded in the SDK’s design and implementation

Requirements

  • Bachelor’s degree in computer science, Software Engineering, or a related field (or equivalent experience)
  • 8+ years of experience in web development, with at least 3 years focused on building and maintaining SDKs
  • Proven track record of contributing to open-source projects or showcasing relevant work on platforms like GitHub

Skills & Technologies

JavaScriptTypeScriptREST APIsGitWeb SDKsBrowser APIsSecurity PrinciplesBuild Tools

Education Level

Bachelor
Seen 22 hours agoPartial Schema
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