Overview

In this role you will design and build AI-enabled market intelligence products that transform public web data into actionable insights. You’ll modernize a legacy, build scalable, event-driven services, and collaborate with cross-functional teams to meet customer needs. You will influence architecture and engineering practices while mentoring peers. The position centers on improving pricing, compliance, and competitive visibility for merchants through innovative tech.

Compensaciones / Beneficios

- Gym membership discounts via Wellhub
- Private health insurance discounts
- Free organic fruit and coffee
- Learning & development opportunities
- Office in Barcelona with 360° city views
- Adaptable working hours (as per schedule)

Responsabilidades

- Design, implement, and maintain new products and features for clients
- Lead technical projects from discovery to delivery and continuous improvement
- Modernize legacy codebase toward a scalable, asynchronous architecture
- Develop and deploy AI-based solutions (ML/DL, LLMs) to generate insights
- Collaborate with UX, Infrastructure, Data, Support, and CSM teams to solve customer problems
- Improve engineering practices,



architecture, and technical standards
- Contribute to products that help customers optimize pricing and monitor compliance
- Work on systems processing large volumes of public web data to generate insights

Requisitos principales

- Senior-level software engineering experience with production-grade software delivery
- Experience reviewing and improving AI-generated code from AI coding agents
- Experience with cloud infrastructure and distributed systems (Kubernetes, Redis, Celery)
- Proven track record building and maintaining SaaS in production
- Strong fundamentals: maintainable, testable, scalable, well-structured code
- Experience with Domain-Driven Design (DDD) and modular architectures
- Professional English proficiency (written and spoken)

- Strong collaboration across cross-functional teams
- Mentoring and knowledge sharing
- Leadership in driving architectural decision-making
- PHP and/or Python
- AI/ML/DL model experience and LLM-based solutions
- Cloud-native and microservices architectures

📌 Senior Software Engineer - Lengow (Barcelona)
🏢 Lengow
📍 Barcelona