Must have

• .NET

• React

• TypeScript

• Scrum

• Testing

• Security

• Agile

• Clean Code

• Domain Driven Design

• C#

• Design Patterns

• CQRS

• Domain-driven design

• Event Sourcing

• Clean Architecture

• Cloud

• Azure

• PostgreSQL

• ORM

• Entity Framework

• Cosmos DB

• NoSQL

• Polish (B2)

• English (B2)

Nice to have

• REST API

• Docker

• Microservices

• RabbitMQ

• Kafka

• SDLC

• Degree

Requirements description

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.

Offer description

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 responsibilities

1. 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.
2. Leading, mentoring, and supporting engineers while fostering a fully agile, high-quality, and collaborative team culture.
3. Helping teammates solve technical challenges through knowledge sharing and technical guidance.
4. Translating project requirements into achievable Sprint commitments with your full-stack cross-functional team.
5. Supporting the creation of client-facing delivery plans and taking ownership of their technical execution.
6. Contributing to architectural discussions and ensuring alignment with clean code, domain-driven, and scalable engineering principles.