Senior Fullstack Developer (C# and React)

the.good.code;; Remote; PLN 180,000 - 240,000; Full time

Job summary

A remote-first software house is looking for a Full Stack Developer with 5+ years of experience in C#, .NET, and React.js. You will collaborate with a dynamic team to design and implement user experiences for web applications while ensuring high standards in maintainability and testability of code. The ideal candidate enjoys mentoring others and possesses a strong understanding of web technologies. This position offers a supportive environment focused on growth and collaboration.

Qualifications

• 5+ years of project‑based, professional experience as a Fullstack Developer.
• Strong proficiency in C# and .NET Framework and Core.
• Strong understanding of JavaScript, TypeScript, and React.
• Experience in working with database management.
• Experience with RESTful APIs and asynchronous client‑server communication.

Responsibilities

• Plan, design, and implement user interfaces and experiences for web applications.
• Ensure codebase is modular, maintainable, and testable.
• Participate in daily Scrum meetings and sprint planning.
• Make technical decisions within the team.
• Mentor and help other developers.

Skills

C#

.NET Framework

React.js

RESTful APIs

TypeScript

Database management

Git

CI/CD pipelines

Professional English proficiency

Education

Bachelor's or Master's degree in Computer Science, Software Engineering

Job description

At the good code;, project success comes from clear preparation, close client collaboration, and having the right team in place. As a remote‑first software house, we deliver tailored software solutions across industries such as fintech, healthcare, and e‑commerce. From custom applications to system optimisation, we address diverse challenges, ensuring real value for our clients.

Our team of 30 professionals, distributed across three countries, excels in using the latest technologies to build scalable, modern solutions. Collaboration, ownership, and mutual support are at the core of our culture, fostering open communication and professional growth. Everyone has a direct impact on the work we do, and no one goes without support when challenges arise.

We’re seeking long‑term collaborators who are curious, proactive, and growth‑oriented. Full Stack Developer with solid hands‑on experience in C#, .NET and React.js.

If you’re ready to work on meaningful projects and contribute to a growing, supportive team — let’s talk!

Responsibilities

• Collaborate with the team to plan, design, and implement user interfaces and user experiences for web applications based on product requirements.
• Ensure that the codebase is modular, maintainable, and testable and that the code meets the team's coding standards and practices.
• Participate in daily Scrum meetings, sprint planning, and sprint reviews, and provide regular updates on the progress of development tasks to the team.
• Work in clients' teams as an equal team member.
• Within your team, you will be responsible for technical decisions and solutions.
• Mentor and help other developers deal with the different situations in their projects and technology stack.

Requirements

• Have proven 5+ years of project‑based, professional experience as a Fullstack Developer.
• Strong proficiency in C# and .NET Framework and Core.
• Strong understanding of JavaScript, TypeScript, React, and its core features.
• Experience in working with database management.
• Experience working with RESTful APIs and asynchronous client‑server communication.
• Experience with Git and implementing CI/CD pipelines using tools like GitLab or GitHub Actions.
• Professional level of English proficiency.

Nice to Have

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
• Knowledge of other C#‑related technologies (.NET, WPS, Blazor).
• Excellent communication skills and team spirit.
• Ability to plan and execute your work, whether you are working on your own or as part of a team.
• Ability to think one step ahead, quickly find solutions and identify risks or problems.
• Eagerness to learn new tools, frameworks, and follow development trends and techniques.
• Can‑do attitude and good sense of humor.

Recruitment Process

• 45 min video HR interview.
• 90 min video technical interview with our project team members.
• 30 min video meeting with our founders.
• 30 min optional video meeting with the project manager.

Next Steps

Apply directly via No Fluff Jobs and/or send us your CV via email: [e-mail]. We will carefully review your application and get back to you straight away.

If this sounds like a great opportunity but maybe not for you, we would be delighted if you could pass on our job description to your friends and network. If you recommend someone, we’ll be thrilled to reward you! Contact us with your referral.

Thank you for your time and consideration!

the good code; team.