Senior Full Stack Developer

Greenminds

Warszawa, mazowieckie
Stała
Pełny etat

7 godzin temu

Senior Full Stack (.NET) DeveloperWe are looking for a highly skilled Senior Full Stack Developer to join our team and contribute to building modern, scalable web applications. This is a long-term engagement with 100% remote work, offered on a B2B contract.Rate: 160–180 PLN/h (B2B)Location: Remote (100%)Languages required: Polish – very good; English – B2/C1What We’re Looking For

4+ years of professional software development experience (ideally 6+ years).
Strong expertise in .NET Core / .NET 6+, ASP.NET Core, C#, and Web API.
Experience developing RESTful APIs and integrations, working with SQL databases.
Proficiency in frontend frameworks (Angular 2+, React, or Vue.js) and HTML5.
Familiarity with unit & integration testing, clean coding practices, and Git.
Ability to work across the stack (frontend, middleware, backend) with attention to performance and code quality.
Comfortable using GenAI tools (e.g., Cursor, GitHub Copilot).
Strong understanding of OOP, design principles, and patterns.
Excellent collaboration skills with remote, distributed teams, strong ownership, and self-management.
Good communication in Polish (very good) and English (B2/C1).

Nice-to-Have (Desired Skills)

Experience with TDD, automated tests, Agile methodologies, pair/mob programming (XP).
Database experience with Microsoft SQL Server, PostgreSQL, Entity Framework Core, ADO.NET.
Frontend experience with Bootstrap, TypeScript, JavaScript, CSS3.
Knowledge of data sources (Data Warehouses, Lakehouses).
Experience with Power BI REST APIs.
Hands-on experience with AI engineering, including:

Agent frameworks/orchestration (planning, multi-agent routing, tool calling).
Retrieval-augmented generation (RAG), embeddings, vector/hybrid search (Azure AI Search).
Microsoft Semantic Kernel or similar .NET agent orchestration tools.
Long-running workflows and human-in-the-loop scenarios.
Ability to identify and proactively avoid performance issues.

Day-to-Day Responsibilities

Hands-on development across frontend, backend, and APIs, ensuring clean and maintainable code.
Participate in daily scrums and collaborate actively with the team.
Deliver features based on planning, grooming, mockups, and user stories.
Design and build scalable applications using .NET (C#/ASP.NET Core), modular monoliths, and microservices.
Implement and optimize RAG pipelines (document ingestion, embeddings, retrieval).
Build and expose APIs (REST/GraphQL) for internal/external integrations.
Contribute to CI/CD pipelines, code reviews, and testing.
Collaborate in pair/mob programming sessions when needed.
Work closely with support teams on deployments and resolving critical issues.

If this sounds like the right challenge for you, don’t hesitate to apply! It’s a great opportunity to grow in the financial domain while exploring cutting-edge technologies.

Greenminds

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