Senior Full Stack Developer | React / Next.js / TypeScript

At Blazity, a team of experienced software engineers and AI practitioners build modern digital products, AI-powered solutions, and digital experiences for international clients worldwide. Projects include large scale enterprise migrations, platform development, greenfield products, and long term maintenance. Technologies used include React, Next.js, TypeScript, Node.js, and cloud platforms such as Vercel, along with headless CMS platforms like Sanity and Hygraph.

• Minimum 5 years of professional software development experience.
• Strong experience with React.
• Strong experience with Next.js.
• Strong knowledge of TypeScript.
• Solid backend development experience with Node.js.
• Good understanding of modern web application architectures.
• Experience building and maintaining production applications.
• Experience with APIs and integrations.
• Experience working with cloud platforms and deployment workflows.
• Ability to take ownership of technical solutions.
• Experience participating in architecture and technical decision making.
• Ability to communicate technical topics clearly in English.
• Experience working with international clients is strongly preferred.

AI Mindset:

• Experience using AI tools such as Claude, ChatGPT, GitHub Copilot or similar in development.
• Understanding of how AI can improve software development.
• Willingness to experiment with new AI tools and approaches.
• Ability to combine AI assisted development with strong engineering judgment.
• Interest in AI powered products and evolving development practices.
• Willingness to keep learning as AI tools evolve.

Nice to have:

• Experience with Vercel.
• Experience with headless CMS platforms like Sanity or Hygraph.
• Experience migrating websites or applications from Webflow or other technologies.
• Experience with AWS.
• Experience with Infrastructure as Code tools like Terraform.
• Experience with observability tools such as Datadog, CloudWatch, or New Relic.
• Experience with frontend performance and Core Web Vitals.
• Experience with design systems and modern frontend architecture.
• Experience with CI/CD and automated testing.
• Experience delivering projects for enterprise clients.
• Previous experience as a technical lead or having technical ownership.
• Experience working on AI powered products.

• Design and develop production web applications using React, Next.js, and TypeScript.
• Take ownership of features and technical areas.
• Participate in architecture and system design.
• Lead technical decisions within your area of responsibility.
• Work on migrations from existing technologies to modern architectures.
• Build and maintain integrations and APIs.
• Work with headless CMS platforms such as Sanity or Hygraph.
• Manage cloud infrastructure and deployment using platforms like Vercel.
• Use AI tools in the development workflow.
• Improve application performance, reliability, and maintainability.
• Review code and provide technical feedback.
• Support and mentor other developers.
• Investigate complex technical problems and propose solutions.
• Work directly with international clients on technical requirements and solutions.
• Contribute to technical estimates and project planning.

The position requires candidates to work 100% remotely from Poland.