Senior Full-Stack Engineer

Senior Full-Stack Engineer (EMEA)

Born out of the heart of the Basque Country in Bilbao, ZenRows is one of the fastest-growing startups in Europe! We work 100% remotely and believe in hiring the best people, no matter where you are in the world!

Founded in 2021, our mission is to transform the future of data workflows by enabling seamless, large-scale data extraction from the web. With our powerful tools, businesses can automate data collection at scale while leveraging the most advanced anti-bot bypass system on the market. Thousands of companies worldwide - across industries like e-commerce, real estate, finance, and AI - rely on ZenRows to streamline their data pipelines, fueling automation, analytics, and AI-driven insights.

As we continue our rapid expansion, we are now looking for a Full-Stack Engineer to join us on a permanent basis and make an instant impact.

The Role:

We’re looking for a Full-Stack Engineer to join our GTM (Go To Market) Activation team - a cross-functional group focused on increasing signup, integration, trial usage, and time-to-value for new users.

Your job is to work at the intersection of engineering, growth, and product, building everything from onboarding flows and self-serve dashboards to usage analytics, activation nudges, and backend services that guide users toward value - faster.

This team sits at the heart of our Go-To-Market engine. You’ll directly influence conversion and retention by reducing friction and turning passive signups into active users.

We’re a remote-first company with a fast-paced, high-impact culture. In this role, you’ll work closely with our CEO, Aurken, and our Director of Engineering. And as a business with two technical founders who have strong engineering backgrounds - you must be comfortable engaging in technical discussions while balancing business needs.

Key Responsibilities:

🚀 Build for Growth

Ship full-stack features across the activation funnel: onboarding UI, guides, wizards, checklists, in-app messaging, and dashboards. Our tech stack: Laravel, Vue

Own backend services and APIs that support analytics, tracking user progress, and onboarding personalization.

Build self-serve capabilities (API explorers, data previews, sandbox flows) that increase integration rates.

📊 Data Instrumentation

Implement robust event tracking using tools like Segment, Amplitude, BigQuery, and PostHog.

Collaborate with Product and Growth to define and instrument key activation metrics.

Work with analysts to surface insights and user segments for better targeting.

🧪 Experimentation Optimization

Run A/B tests and iterative experiments to improve signup, activation, and trial conversion.

Based on usage data, build and test UX variations, email triggers, and behavioral nudges.

Instrument cohort-based analysis to identify drop-offs and quick wins.

🤝 Cross-Functional Collaboration

Partner with Product, Marketing, Sales, and Support to identify blockers and opportunities across the funnel.

Act as a technical bridge between user-facing teams and the internal analytics tools.

Help craft a frictionless developer experience from signup to first value.

🛠 Engineering Best Practices

Write clean, maintainable, and performant full-stack code.

Ensure smooth deployment and observability of new features (logs, alerts, error tracking).

Maintain high standards for privacy, compliance, and security.

The Person:

We’re looking for a builder obsessed with user onboarding, experimentation, and removing friction. You’re a data-driven engineer who understands product goals and loves seeing your work directly impact metrics that matter.

Key Skills and Experience:

Have +5 years of experience as a Full-Stack/Product Engineer, ideally with exposure to growth or product engineering.

Have experience with modern frontend and backend development using React (or similar frameworks).

Understand SaaS funnels - signup, onboarding, usage, activation, conversion.

Have implemented behavioral analytics, event tracking, and activation dashboards.

Have worked with tools like Amplitude, Segment, BigQuery, or PostHog.

Are familiar with A/B testing tools and statistical analysis of experiments.

Know how to balance speed with tech debt, and can ship fast while keeping things clean.

Enjoy owning metrics and being measured by impact, not lines of code.

Communicate clearly with product, growth, and marketing teams - and thrive on feedback.

Have a strong design sensibility with experience creating polished, customer-facing interfaces that reflect brand values and marketing goals.

Bonus Points If You

Have worked on activation or conversion at a B2B SaaS or API-based startup.

Can explain concepts like time-to-value, North Star metrics, or growth loops.

Have experience improving self-serve flows in technical products (developer-facing tools, APIs, dashboards).

Have worked closely with design and marketing teams to implement customer-facing solutions that drive conversio…