Fullstack Developer (Node.js/React)

TL;DR

Fullstack Developer (Node.js/React): Developing and optimizing a cloud-based SaaS platform for district heating and energy systems with an accent on full-stack feature ownership and real-time data processing. Focus on modernizing internal tools, integrating IoT data from sensors, and building scalable microservices in Azure.

Location: Hybrid from Gdańsk, Warszawa, Kraków, or Rzeszów

Salary: 700 - 850 PLN/MD on B2B

Company

hirify.global is a Polish IT consultancy that provides highly specialized experts to global clients; the end client is a world leader in energy efficiency and climate-friendly infrastructure solutions.

What you will do

• Develop and optimize features for a cloud-native SaaS platform hosted in Microsoft Azure.
• Build and maintain backend services using Node.js and frontend applications using React.
• Implement real-time and historical analysis of energy consumption using data from sensors and controllers.
• Collaborate in a distributed team using Agile/Scrum practices, including sprint commitments and estimations.
• Ensure high code quality through automated testing (Unit, Integration, E2E) and peer code reviews.

Requirements

• Proficiency in Node.js, TypeScript, and React.
• Knowledge of microservices, event-driven architectures, and message brokers (pub/sub patterns).
• Familiarity with Docker and basic Kubernetes concepts.
• Must be based in or able to work from Gdańsk, Warszawa, Kraków, or Rzeszów (Hybrid).
• Good English communication skills for a written-first environment.

Nice to have

• Experience with E2E testing or event sourcing.
• Knowledge of IoT or industrial protocols.
• Domain expertise in energy, district heating, or building management systems.

Culture & Benefits

• Opportunity to work on a product with real-world impact on energy efficiency and climate.
• Full ownership of features from development through to production deployment.
• Environment that prioritizes automated testing and high engineering standards.
• Access to a proprietary professional development programme provided by hirify.global.