Senior Software Engineer (Fullstack) - Product

TL;DR

Senior Software Engineer (Fullstack): Building and optimizing end-to-end product features for an observability platform with an accent on frontend UI, backend logic, data modeling, and API design. Focus on architecting performant interfaces at scale, contributing to backend systems, and ensuring reliability and scalability of services under heavy traffic.

Location: Hybrid (Madrid, Spain; Paris, France)

Company

hirify.global is a global SaaS business that delivers an observability platform enabling digital transformation, cloud migration, and infrastructure monitoring.

What you will do

• Architect, build, and ship end-to-end product features, owning the full stack from frontend UI to backend logic and API design.
• Drive technical excellence for the frontend experience, focusing on performance, accessibility, responsiveness, and overall quality.
• Collaborate with product managers, designers, and backend engineers to define user experiences, data flows, and APIs.
• Improve the reliability and scalability of services supporting your features through backend code contributions.
• Lead technical discussions, influence architecture decisions, and mentor other engineers on fullstack best practices.
• Ensure strong testing coverage, clear documentation, and long-term maintainability across the stack.

Requirements

• 6+ years of experience building and shipping production-grade fullstack features at scale.
• Deep expertise in JavaScript/TypeScript and modern frontend frameworks (React preferred).
• Solid backend engineering skills with proficiency in at least one server-side language (e.g., Python, Go, Java).
• Familiarity with APIs, databases, and distributed systems.
• Strong understanding of frontend architecture, state management, performance tuning, and client-server interaction patterns.
• Ability to interpret broad product requirements and translate them into polished, user-facing applications.

Culture & Benefits

• Generous and competitive benefits package.
• New hire stock equity (RSUs) and employee stock purchase plan.
• Continuous career development and pathing opportunities.
• Employee-focused best-in-class onboarding with internal mentor and cross-departmental buddy program.
• Friendly and inclusive workplace culture.
• Hybrid workplace to ensure work-life harmony.