Senior Engineer (React/Next.js/React Native/Node.js)

We’re looking for a Senior Full-Stack Engineer to join a B2B SaaS platform with a mobile-first experience and a distributed backend architecture, where performance, data processing, and scalability are critical to the product’s success.

This is a great opportunity to work on a complex, real-world product used across multiple regions, contributing not only with code but also with technical decisions and product evolution.

🚀 What you’ll do

• Design and build scalable features across frontend, mobile, and backend layers

• Contribute to architectural decisions and system design

• Work closely with product and engineering stakeholders

• Optimize performance and data-intensive workflows

• Collaborate within a distributed team, bringing a proactive and ownership-driven mindset

🧠 Tech Stack

You’ll be working with a modern, distributed stack:

• Frontend: React, Next.js, React Native (Expo)

• Backend: Node.js (Bun), GraphQL, REST

• Database: MongoDB (complex modeling, read-heavy workloads)

• Infrastructure: Google Cloud Platform (GCP), Docker, Kubernetes

• Infrastructure as Code: Terraform, Ansible

• Messaging: NATS

• CI/CD: Jenkins + GitHub

• Testing: Unit, Integration, End-to-End (Playwright)

🎯 What we’re looking for

• Strong experience as a Full-Stack Engineer in modern web/mobile environments

• Solid understanding of scalable systems and distributed architectures

• Product-oriented mindset and ability to navigate complex systems

• Proactive, autonomous, and comfortable taking ownership

• Strong communication and collaboration skills in remote environments

🇺🇸 Advanced English is required, as you’ll work directly with US-based clients in a fully collaborative environment.

✨ What we offer

• 20 days of paid time off per year

• Flexible working hours (we care about results, not clocking in)

• Remote-first culture

• Health insurance + fitness benefit

• Learning & development support

• In-company English classes

• Internal knowledge-sharing sessions

• A collaborative, friendly, and human-centered team environment

🏢 About VAIRIX

VAIRIX is a nearshore software development company that partners with startups and growing organizations to build high-quality software and scale engineering teams.

We work in real-time with U.S. clients, combining a boutique approach with strong technical expertise, fast onboarding, and a focus on long-term collaboration.

🤝 Want to join us?

If you're looking for a place where people matter as much as code — this might be it. Let’s talk.