Senior Fullstack Developer (B2B Contract)
12/7/2025
The Senior Fullstack Developer will build and maintain scalable systems using Node.js and React, owning end-to-end features from design through implementation to production. They will collaborate closely with product managers, customers, and R&D teams while leading code reviews and architectural decisions.
Working Hours
40 hours/week
Company Size
51-200 employees
Language
English
Visa Sponsorship
No
We’re looking for a sharp, experienced Full Stack Engineer to join our global Developers Experience team at OX Security. This team is all about building the infrastructure and integrations that empower our product.
You’ll take part in shaping scalable, end-to-end features, from concept to production, with full ownership over architecture, design, and delivery. We value clean code, strong design thinking, and a collaborative mindset.
Responsibilities
What You’ll Be Doing
- Build and maintain scalable systems using Node.js and React
- Own end-to-end features — from design through implementation to production
- Collaborate closely with product managers, customers, and R&D teams
- Lead and participate in code reviews and architectural decisions
- Work on high-scale, cloud-based infrastructure (AWS, MongoDB)
Requirements
What We’re Looking For
- 5+ years of hands-on development experience
- Strong experience with both React and Node.js (must-have)
- Passion for building reliable and well-designed systems
- Strong communication skills and experience working in cross-functional teams
- Ability to work independently and lead by example
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