Tech Lead .NET + React - Remote PT, Spain or Poland

Tech Lead (C#/.NET/React) — Full Remote Portugal · Spain · Poland Portugal · Spain · Poland C# · TypeScript Full Remote About the opportunity Join a fast-growing technology platform at a pivotal moment of scale. This is a senior individual-contributor leadership role at the heart of a distributed engineering organisation — you'll own architecture decisions, drive technical alignment across teams, and be a hands-on force multiplier for the engineers around you. The product touches thousands of users and is evolving rapidly, giving you a rare combination of strategic impact and meaningful day-to-day craft. Project & context You will work on a large-scale microservices platform built on .NET Core and React, deployed across cloud infrastructure on Azure or GCP. The system follows event-driven patterns — publish-subscribe messaging sits at the core of how services communicate. Teams are distributed across Europe and collaborate closely on architecture; you'll participate in cross-team design discussions and help set the technical direction that keeps the platform coherent as it grows. What we're looking for — required Strong proficiency in C# and .NET Core · RESTful APIs, Solid working experience with React (modern hooks & patterns)Deep grasp of OOP, data structures, and algorithms, Design patterns · System design, Hands-on experience with PostgreSQL · Relational modelling, Containerisation and Docker experience · Container orchestration, Knowledge of microservices and event-driven architecture, Pub-Sub · Message brokers, Strong DevOps and CI/CD proficiency, Pipelines · Automated deployment, Focus on code quality and unit testing, TDD · Code review culture Nice to have — preferred Experience with Kubernetes and cloud platforms · Azure or GCP Prior experience guiding engineering teams and leading architecture conversations in a cross-functional, distributed environment