Technical Leada (.NET + React)

Unfolding Your Next Role

Currently, we are looking for a Technical Lead (Fullstack: .NET + React) to join our team and support the development of a modern application for our international client in the FinTech industry, delivering solutions for banks and financial institutions. We are seeking a hands-on engineering leader who feels confident in both backend development with .NET and frontend development using React and TypeScript, and who can guide a cross-functional team toward technical excellence.

Your Daily Missions

• Ensuring that deliverables produced by the Scrum team are well designed, well implemented, and thoroughly tested, following best practices in coding standards, automation, integration, testing, and security.

• Leading, mentoring, and supporting engineers while fostering a fully agile, high-quality, and collaborative team culture.

• Helping teammates solve technical challenges through knowledge sharing and technical guidance.

• Translating project requirements into achievable Sprint commitments with your full-stack cross-functional team.

• Supporting the creation of client-facing delivery plans and taking ownership of their technical execution.

• Contributing to architectural discussions and ensuring alignment with clean code, domain-driven, and scalable engineering principles.

The Essentials We're Seeking

• 5+ years of commercial experience with .NET, C#, React, and TypeScript (stronger backend experience is acceptable).

• Proven experience leading engineering teams or acting as a technical lead/lead developer.

• Strong understanding of software architecture principles and backend design patterns (dependency injection, repository, mediator, factory, etc.).

• Hands-on experience with CQRS and Domain-Driven Design (DDD), including aggregates, entities, value objects, and bounded contexts.

• Understanding of Event Sourcing – event stores, event replay, and modeling immutable domain events.

• Solid knowledge of clean architecture and separation of concerns.

• Exposure to cloud environments, ideally Azure, and understanding of cloud infrastructure and services.

• Practical experience with PostgreSQL and ORM frameworks such as Entity Framework (or equivalent).

• Exposure to CosmosDB or other NoSQL/document databases.

• Experience designing and consuming RESTful APIs.

• Familiarity with Docker for development and deployment workflows.

• Fluency in English and Polish (B2+).

Nice-to-haves

• Hands-on experience with microservices and distributed systems.

• Exposure to message brokers (e.g., RabbitMQ, Kafka).

• Experience contributing to SDLC processes within agile or iterative teams.

• A degree in Computer Science, Software Engineering, or a related field.

• Familiarity with modern testing frameworks and automation strategies.