Senior Full-Stack Developer (.NET/React)

Quick Facts

• Role: Senior Full-Stack Developer (.NET/React)

• Domain: FinTech / Digital Commerce

• Work mode: Remote

• Rate: Up to 150 PLN/h + VAT (depending on experience)

Description

You will develop and maintain a FinTech/Digital Commerce platform, creating new product features and evolving existing solutions. The work includes designing, implementing, testing, and deploying scalable, secure, and performant software components using .NET, React, and AWS, including web apps, APIs, and microservices. You will also support production systems by diagnosing and fixing issues, participating in incidents, and preparing technical documentation.

Responsibilities

• Develop product functionality for the platform and extend existing solutions

• Design, implement, test, and deploy scalable, secure, high-performance components

• Build and evolve web applications, APIs, and microservices-based architecture

• Analyze, diagnose, and resolve production environment defects and issues

• Participate in sprint planning, task estimation, code reviews, and improvement of engineering practices

• Support production systems: incident handling and technical documentation

• Collaborate with product teams responsible for different platform areas

Requirements

• Very good knowledge of .NET and React and experience building web applications

• Practical experience with AWS and cloud solutions

• Experience designing and developing APIs, microservices, and distributed systems

• Knowledge of relational and/or non-relational databases (SQL/NoSQL)

• Knowledge of software design, testing, design patterns, and programming best practices

• Experience in Agile teams and participation in code review

• Ability to design end-to-end solutions, make technical decisions, and support team development

• English proficiency at least C1

Benefits

• Remote work model

• Project budget up to 150 PLN/h + VAT depending on experience