Full-Stack .NET Developer – Fintech, Hybrid Role

IntellectEU; Kraków; Hybrid; PLN 140,000 - 200,000; Full time

Job summary

IntellectEU in Kraków (and London) is seeking a skilled developer to build and scale backend and frontend services with a focus on security and reliability.

You will design and consume REST APIs, integrate blockchain-related capabilities, and work in CI/CD pipelines with modern DevOps practices.

The role is hybrid (2–3 days in the office), offering the chance to collaborate with a multinational fintech team on cutting‑edge projects. Join a growing, international fintech company.

Qualifications

• Proficient in .NET (C#) and frontend tech (TypeScript/Angular).
• Experienced designing and consuming REST APIs and event-driven architectures.
• Strong understanding of SDLC and Agile methodologies.
• Experience with cloud platforms (Azure) and modern DevOps practices.
• Familiar with CI/CD pipelines, Git, and automated testing frameworks.
• Strong analytical and problem-solving skills.
• Excellent communication and interpersonal skills.

Responsibilities

• Implement and operationalize core backend and frontend services with fault tolerance, security, and scalability.
• Build API-first services integrating blockchain networks, third-party provider solutions, and internal systems with strong consistency guarantees.
• Implement secure service communications using cryptographic signatures, key management, and zero-trust architecture principles.
• Operationalize event-driven systems using Apache Kafka and asynchronous messaging patterns.
• Implement robust concurrent and asynchronous processing patterns for multi-threaded workloads.
• Integrate Web3 SDKs and libraries for on-chain interactions, transaction signing, and state monitoring.
• Produce and maintain high test coverage via automated unit, integration, and functional testing frameworks within CI/CD pipelines.
• Produce and maintain technical documentation, API specifications, and operational runbooks.

Skills

.NET

TypeScript

Angular

REST APIs

SDLC & Agile

Azure

CI/CD

Git

Testing frameworks

Analytical skills

Communication

Job description

IntellectEU in Kraków (and London) is seeking a skilled developer to build and scale backend and frontend services with a focus on security and reliability.

You will design and consume REST APIs, integrate blockchain-related capabilities, and work in CI/CD pipelines with modern DevOps practices.

The role is hybrid (2–3 days in the office), offering the chance to collaborate with a multinational fintech team on cutting‑edge projects. Join a growing, international fintech company.