Senior Product Engineer

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Leadtech Group

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2009

🤝 B2B

☁️ SaaS

🛍️ eCommerce

B2B • SaaS • eCommerce

Leadtech Group is a company that excels in transforming ideas into successful online projects with a focus on creativity, diversity, and fast-paced development. With their headquarters in Barcelona, Spain, Leadtech specializes in numerous online services including UX design, SEO, SEM, social media management, content creation, customer service, project management, and system administration. The company is known for its dynamic and diverse team of fun-loving, hard-working professionals who aim to exceed contemporary standards by leveraging the connectivity of the internet to enhance user experiences. Leadtech is committed to providing innovative solutions and seeks to continuously grow and achieve success by embracing a pioneering mindset.

📋 Description

• Build and maintain the core multiplatform document system. You’ll own features end-to-end, from idea to production, React frontends, Node.js/Express backends, and PostgreSQL. • Ship to learn. Proactively instrument features, measure impact, seek user feedback, and iterate or kill based on what you discover. You treat metrics as a compass, not a report card. • Design and orchestrate agentic AI workflows using modern frameworks (LangGraph, Claude Agent SDK, MCP protocols) and integrate LLMs into product features via prompt chains, tool calling, and function execution. • Collaborate with engineers, designers, and leadership to shape the product roadmap. You’ll have a real voice in what gets built and why. • Build, maintain, and extend automation pipelines and connect them with AI agents, external APIs, webhooks, and cloud services on GCP.

🎯 Requirements

• Python fluency, you can quickly build and utilise a wide range of libraries when the task calls for it. • 2–5 years of full-stack experience in a high-output team. You know how to balance speed with quality and when to choose one over the other. • Deep TypeScript & React proficiency on the frontend (Hooks, Context API, Vite, Shadcn UI) and backend (Node.js, Express, REST APIs, PostgreSQL). • You have taste. You can distinguish between good and bad UX, and you can share examples to demonstrate it. • You’re AI-native. You reach for agents by default, understand MCP and agentic orchestration patterns, and have built guardrails to trust them more and more. Python proficiency for rapid prototyping is a must. • You’re self-driven and business-aware. You care about solving real problems and moving the needle on metrics, not just shipping features. Give you context, and you’ll find the leverage

🏖️ Benefits

• Growth and career development • We prioritize your growth. Enjoy a flexible career path with personalized internal training and an annual budget for external learning opportunities. • Work-Life balance • Benefit from a flexible schedule with flextime and the option of working full remote or from our Barcelona office. Enjoy free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August so you can savor summer! • Comprehensive benefits • Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services). • 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! • Unique Perks • If you wish to come, in our office in Barcelona you’ll find it complete with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views. • Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary.