Staff Software Engineer

About the Role

We’re looking for a Staff Software Engineer to join our client, a fast-scaling technology company building products used by millions of users globally. This is a senior hands-on engineering role for someone who thrives on solving complex problems, shaping architecture, and leading by example—not just following predefined blueprints. You’ll work across the stack with PHP, Node.js, and React, designing and delivering high-performance systems in a fast-paced, product-driven environment.

Key Responsibilities

Lead the design, development, and evolution of large-scale web applications serving high user volumes

Take ownership of complex technical problems, driving solutions from concept through implementation

Collaborate closely with product and engineering teams to define architecture, APIs, and system patterns

Set standards for code quality, performance, and scalability across backend and frontend systems

Mentor engineers, providing guidance on technical decisions and long-term architectural direction

Work across the stack—designing backend services in PHP / Node.js and building intuitive, performant React frontends

Optimize system performance, reliability, and user experience for large-scale, data-driven applications

Contribute to the company’s technical strategy, continuously improving tooling, processes, and infrastructure

Required Skills & Experience

8+ years of professional software engineering experience

Strong experience with PHP and Node.js on the backend and React on the frontend

Proven experience building or scaling systems with large active user bases (high-traffic, high-volume environments)

Ability to think independently—defining problems, designing solutions, and influencing architectural direction

Deep understanding of distributed systems, API design, and system optimization

Hands-on experience with relational and NoSQL databases (e.g. MySQL, PostgreSQL, MongoDB)

Familiarity with modern DevOps and CI / CD practices in cloud-based environments (AWS, GCP, or Azure)

Excellent communication and collaboration skills, with experience working in cross-functional teams

Nice to Have

Experience leading technical initiatives or acting as a key decision-maker in engineering teams

Knowledge of caching, scaling, and performance tuning for web-scale applications

Exposure to microservices architectures, containerization (Docker, Kubernetes), or serverless technologies

Familiarity with analytics, A / B testing, and data-driven product iteration

Why Join?

This is an opportunity to take real ownership—driving architectural decisions, influencing product direction, and helping shape a platform that impacts millions of users. You’ll join a collaborative, forward-thinking engineering culture that values autonomy, technical depth, and creative problem-solving.

The role is hybrid or remote within Europe, and requires eligibility to work in the region without sponsorship.

Apply now or reach out to learn more.