Senior Software Developer (React + Node.js)

We’re opening the position of a Senior Software Developer to work with our Client — a leading energy SaaS company delivering highly technical insights and predictive/prescriptive analytics that empower customers to make decisions that increase profit.

​You would be joining the Front-End Chapter of the team developing our premier energy analytics platform.

Responsibilities:

• Rapidly prototype new features in a React-based web application
• Influence design and user experience of single-page applications
• Perform full-stack development and maintenance of our platform services built with Node.js, React, and Kubernetes
• Create and maintain microservices backed by document-based databases and GPU accelerated databases
• Contribute to scoping, estimating, and planning projects
• Debug, investigate, and resolve bugs and customer issues
• Write unit, integration, and end-to-end tests
• Lead code reviews, API design reviews, or technical reviews of the products
• Stay up to date on industry trends through self-study, research, and online courses
• Mentor junior team members

Requirements:

• 5+ years of software development experience building web applications with React and Node.js
• Extensive experience with modern web application development tools and libraries
• Multiple years of experience writing modern applications in JavaScript (ES2015 and later)
• Knowledge and experience with one JavaScript-based bundler (we use webpack)
• Solid understanding of proper use and design of a microservices architecture
• Understanding of the fundamental design principles behind building secure and scalable applications
• Experience working within a continuous integration and deployment (CI/CD) environment
• Familiarity with OOP and Agile methodologies
• Ability to manage source code effectively using Git (we use GitHub)
• Excellent understanding of data structure and algorithms
• Excellent communication and cross-functional collaboration skills
• English level — Upper-Intermediate or higher

Will be a plus:

• Hands-on experience with Jest and/or React Testing Library
• Experience in data visualization, using Mapbox, D3, or other JavaScript-based libraries
• Familiarity with Docker and Kubernetes
• Familiarity with MongoDB and PostgreSQL
• Familiarity with Git (or an equivalent)
• Familiarity with Azure Cloud services (or an equivalent)
• Understanding of CI/CD
• Experience working in a Nix-like environment (Linux, OSX, Windows WSL2)

We offer:

• Remote-first work model with flexible working hours (we provide all equipment)
• Comfortable and fully equipped offices in Lviv and Rzeszów
• Competitive compensation with regular performance reviews
• 18 paid vacation days per year + all state holidays
• 12 days of paid sick leave per year without a medical certificate + extra paid leave for blood donation
• Medical insurance with an affordable family coverage option
• Mental health program which includes free and confidential consultations with a psychologist
• English, German, and Polish language courses
• Corporate subscription to learning platforms, regular meetups and webinars
• Friendly team that values accountability, innovation, teamwork, and customer satisfaction
• Inclusive environment where everyone feels valued and treated equally. We proudly partner with VeteranHub to support Ukrainian veterans
• We are committed to supporting Ukraine and actively participate in charity initiatives