Senior Fullstack Engineer

At Upside, we’re partnering with ambitious companies across the globe to solve complex, meaningful problems through technology. We work in focused teams, combining engineering, product thinking, and design, to deliver outcomes, not just output.

Open-source is a strategic part of our work. We build and maintain a number of open-source projects that support our clients and internal R&D. Our latest release is Enthusiast, a customizable agentic AI toolkit for e-commerce.

• Extensive commercial experience in building web-based applications (+5 years).
• Experience in at least one of Upside’s backend technology stack: Ruby, Python, JavaScript or willingness to learn based on current skills.
• Experience in at least one of Upside’s frontend technology stack: Vue and React or willingness to learn based on current skills.
• In-depth understanding of SQL and relational databases.
• Experience with Continuous Integration and Continuous Delivery.
• Experience in direct work with different stakeholders (e.g. Product Owners or Business Founders) in a consulting setting.
• Deep understanding of end-to-end software development cycle.
• Great command of written and spoken English.

• Lead the design and development of robust backend systems that serve as the backbone for client-facing platforms, ensuring scalability, maintainability, and capability to handle global client needs.
• Actively contribute to refining engineering methodologies and practices, advocating for code quality, security, and efficiency.
• Work closely within a development team, fostering a collaborative environment where ideas and best practices are shared and implemented.
• Engage directly with business stakeholders, consulting on and designing technology solutions that meet their needs, translating complex technical concepts into business-friendly language.
• Constantly evaluate and incorporate new technologies or methodologies to improve the efficiency and reliability of backend systems.