Senior Fullstack Engineer – FinTech Analytics (Remote)

Instinctools; Polska; Hybrid; PLN 499,000 - 691,000; Full time

Benefits offered by this job

Fully remote setup

Social benefits package

Career development opportunities

Learning opportunities and conferences

Job summary

instinctools is seeking a Senior Full Stack Engineer (C#/ .NET + Angular) for a FinTech client. You will design and develop high-performance interfaces while contributing to backend services and APIs, shaping end-to-end functionality for analytics platforms.

Ideal candidates have 6+ years of experience, strong C#/.NET and Angular/TypeScript expertise, REST APIs, and cloud awareness. Remote setup, cross-region collaboration, and a focus on automation and leadership are valued.

Qualifications

• 6+ years of experience as a Full Stack Developer
• Proficiency in C#/.NET, ASP.NET Core, Entity Framework
• Experience with Angular and TypeScript
• Experience designing and consuming RESTful APIs
• Familiarity with cloud-based architectures and distributed systems
• Experience in agile development
• Bachelor’s degree in CS/Engineering
• Self-starter with strong communication and ownership
• Attention to detail and ability to work in fast-paced environment
• Leadership and accountability for work undertaken

Responsibilities

• Design, build, and maintain backend services, APIs, and core logic
• Improve scalability, reliability, security, and performance
• Design, develop, and maintain frontend applications with Angular/TypeScript
• Build reusable UI components and scalable frontend architectures
• Develop and maintain data pipelines and integrations
• Write and review automated tests to ensure code quality
• Collaborate with engineers, product managers, and client-facing teams
• Contribute to software design discussions, code reviews, and documentation
• Support end-to-end delivery from design to deployment and monitoring

Skills

C#/ .NET

ASP.NET Core

Angular

TypeScript

REST APIs

SQL

NoSQL

Cloud architectures

Agile

Leadership

Communication

B2 English

Education

Bachelor’s degree in computer science / engineering

Tools

REST APIs

Entity Framework

Job description

instinctools is seeking a Senior Full Stack Engineer (C#/ .NET + Angular) for a FinTech client. You will design and develop high-performance interfaces while contributing to backend services and APIs, shaping end-to-end functionality for analytics platforms.

Ideal candidates have 6+ years of experience, strong C#/.NET and Angular/TypeScript expertise, REST APIs, and cloud awareness. Remote setup, cross-region collaboration, and a focus on automation and leadership are valued.