Backend Developer

Up Hellas

Backend Developer focusing on Python services for a fintech company specializing in employee benefits. Collaborate on payment processing and financial services while working in a hybrid environment.

Posted 6/23/2026full-timeAthens • 🇬🇷 GreeceMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

DjangoFlaskMicroservicesMySQLPostgresPythonRedisSQL

About the role

Key responsibilities & impact

Design, develop, and maintain backend services using Python and associated frameworks (Django, FastAPI).
Collaborate with cross-functional teams to define, design, and ship new features.
Work within a microservices architecture, understanding service boundaries and inter-service communication.
Optimize and refactor existing code for improved performance and maintainability.
Design and implement RESTful APIs to support frontend and mobile applications.
Ensure API security and authentication mechanisms are robust and up-to-date.
Collaborate with frontend developers to integrate frontend components with backend services.
Work with various databases, ensuring efficient and optimized queries.
Design and implement database schemas, ensuring data integrity and performance.
Perform database migrations and handle versioning.
Write unit tests and conduct thorough testing to ensure the reliability and stability of backend components.
Collaborate with the quality assurance team to identify and fix bugs and improve overall system performance.
Create and maintain comprehensive documentation for backend systems and APIs.
Document code and solutions for future reference and ease of collaboration.
Work closely with frontend developers, product managers, and other stakeholders to understand project requirements and ensure timely delivery of high-quality solutions.
Participate in code reviews and peer coding to maintain code quality and share best practices

Requirements

What you’ll need

Bachelor's degree in Computer Science, Engineering, or a related field
4+ years of proven hands-on Software Development experience in Python
Strong knowledge of at least one major Python framework (Django, Flask, FastAPI)
SQL knowledge, especially related to query efficiency and optimization
Experience with both external and embedded databases (PostgreSQL, MySQL), as well as with cache engines (Redis)
Proficient understanding of CI/CD pipelines and code versioning tools, such as Git
Solid understanding of both the functional and object-oriented programming paradigms and how they apply to the Python language
Familiarity with concepts of MVC, ORM and RESTful
Analytical mindset and good problem-solving skills.
Excellent written and verbal communication in English.

Benefits

Comp & perks

A dynamic working environment
Lots of benefits: FlexOne, Fitpass, Private medical plan, breakfast (yes – you read that correctly!)
A full-time, indefinite contract

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PythonDjangoFastAPISQLPostgreSQLMySQLRedisCI/CDGitRESTful APIs

Soft Skills

analytical mindsetproblem-solving skillswritten communicationverbal communicationcollaborationcode reviewdocumentationteamworkstakeholder engagementquality assurance

Certifications

Bachelor's degree in Computer ScienceBachelor's degree in Engineering