Senior Fullstack Engineer (Django+React; 100% remote)

💰 Salary: 19 100 - 23 400 PLN per month 🌎 100% remote 🕦 Full-time position, long-term ☑️ B2B Contract The company operates a SaaS platform that lets brands create and administer digital identity records for their physical goods. Shoppers reach these records by scanning QR codes on items such as apparel or footwear, landing in branded interfaces that surface sustainability data, maintenance guidance, after-sales support, and secondary market options. The product ingests existing product data from brand clients and makes it consumable at scale. Requirements: • At least 5+ years of hands-on engineering experience, combined with solid product thinking • Advanced Python capability, since Django carries most of the platform's business logic • Confident working knowledge of TypeScript, React, and Tailwind CSS • Practical background integrating REST endpoints and webhooks, plus experience parsing inconsistent production data in formats such as JSON, XML, and CSV • Direct exposure to Google Cloud Platform, or transferable depth in AWS or Azure • Daily use of AI-assisted development tools such as Claude or GitHub Copilot as part of standard workflow • Advanced spoken and written English  Nice to Have: • Prior work with enterprise resource planning or product information management systems, for instance SAP, Akeneo, or inRiver • Exposure to GS1 specifications or other supply chain data interchange formats Key Responsibilities: • Extend and refine the Django-based Python backend through new API endpoint development, data model changes, background job processing, and performance tuning • Build and maintain the APIs that power the Passport Builder product • Deliver user-facing functionality written in TypeScript and React within the Passport Builder and the administrative tools used by brand teams • Take responsibility for uptime and monitoring on GCP infrastructure, spotting anomalies ahead of customer-reported incidents • Contribute to technical direction and shape architectural choices as the platform expands across additional clients, larger product catalogs, and new geographic regions • Architect and implement data pipelines that move ERP, PLM, and PIM records from client systems into the platform during new brand onboarding Get to know DevsData: We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com/