Senior Backend Engineer (Python)
Anywhere in PolandFull-TimeSenior
Salary20800 - 25900 PLN per month
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Job Details
- Languages
- English
- Experience
- +5 years
- Required Skills
- PostgreSQLPythonJavascriptReact.jsRubyVue.JsCI/CD
Requirements
- Extensive commercial experience in building web-based application (+5 years)
- Strong proficiency in at least one of Upside’s core technology stack: Ruby, Python, JavaScript
- Willingness to learn based on current skills
- Solid understanding of software architecture principles: monoliths, microservices, asynchronous systems, messaging patterns, and scalability
- Deep knowledge of relational databases (PostgreSQL) and performance optimization
- Working understanding of frontend frameworks and tools (Vue.js, React.js)
- Practical experience with Continuous Integration/Continuous Deployment (CI/CD) practices and modern cloud environments
- Strong consulting mindset
- Fluent English, with clear written and verbal communication
Responsibilities
- Design, develop, and maintain production-grade platforms for global clients
- Contribute significantly to the backbone of client-facing solutions
- Work in autonomous teams (3-9 people) delivering mission-critical systems
- Collaborate directly with technology leaders, founders, and domain experts to shape solutions that drive real business outcomes
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