Marc Ramiro
Alpuente
10+ years building high-throughput backend systems for international retail — now leading the squad behind Lidl's cross-border tech, with C# at the core.
Full seniority arc — from shipping code to setting direction.
Senior .NET Backend Engineer and Squad Tech Lead with 10+ years of experience designing and delivering scalable backend systems using C#, .NET Core, Azure, and MongoDB.
At SCRM Lidl International Hub, I lead a cross-functional squad responsible for backend architecture decisions, technical roadmap definition, and hands-on development of high-throughput APIs powering Lidl's international operations. I bridge the gap between engineering execution and product goals, acting as the primary technical point of contact for stakeholders across multiple countries.
My background spans the full seniority arc — from individual contributor building production systems, to co-founding a tech startup as CTO, to mentoring and leading engineering teams. I thrive where technical depth and people leadership go hand in hand.
Where the systems got built.
Squad Tech Lead
Leading the technical direction and day-to-day execution of a cross-functional team within Lidl's international tech hub — architecture decisions, code quality governance, sprint planning, and stakeholder alignment across product, data, and infrastructure teams.
- Define and maintain the squad's technical roadmap, balancing delivery speed with long-term system health.
- Conduct technical interviews and contribute to hiring decisions for backend engineering roles.
- Mentor junior and mid-level engineers through structured code reviews, pair programming, and 1:1s.
- Act as escalation point for complex problems involving distributed systems and API performance.
Senior .NET Backend Engineer
Core backend engineer within one of Europe's largest retail tech hubs, developing and maintaining high-availability APIs and microservices supporting Lidl's digital operations across multiple countries.
- Designed and implemented RESTful APIs and event-driven services using .NET Core, C#, and Azure Service Bus, handling millions of daily transactions.
- Led migration of legacy monolith components to microservices, improving deployment independence and resilience.
- Integrated Azure Cosmos DB and MongoDB as primary data stores for high-read workloads, applying schema design patterns for query performance.
- Collaborated with product squads across Spain, Germany, and Poland to define API contracts and data models.
Team Lead
Software Developer
Developer
Co-founder & CTO
Co-founded and led technology direction for an early-stage startup building computer-vision and speech-driven products.
Developer
Built C# services on MongoDB and Elasticsearch under an Agile/Scrum methodology, on the .NET 4.5 / MVC framework.
Depth across the stack, from architecture to code review.
Formal training, kept current.
Universitat Oberta de Catalunya
Educem
Looking for a tech lead who ships and mentors?
Open to conversations about senior backend and engineering-leadership roles.