COSMOTE Global Solutions NV is a prominent player in the ICT sector as a member of the OTE Group of Companies. We pride ourselves on delivering exceptional ICT Solutions and Services to a diverse clientele.
We are currently seeking a skilled Back-end Developer to join our dynamic team. In this role, you will be responsible for developing server-side application logic, ensuring high performance and responsiveness to requests from the front-end. The ideal candidate is a team player who possesses a strong understanding of various back-end technologies.
Key Responsibilities:
- Development of back-end website architecture.
- Collaborate closely with front-end developers, UI/UX designers, product managers, and other stakeholders to deliver quality web application solutions.
- Architect server-side components and services that form the backbone of web applications, employing best practices in Python programming.
- Develop and maintain RESTful APIs to facilitate seamless communication between front-end and back-end systems.
- Implement core business logic.
- Implement scalable architectures to handle increased user load and data volume, leveraging cloud services and containerization.
- Creation of servers and databases for functionality.
- Design, implement, and optimise database schemas and queries to ensure efficient data storage and retrieval processes.
- Understanding and implementation of security and data protection.
- Manage database security measures to protect sensitive information, ensuring compliance with data protection standards.
- Conduct regular code reviews and use vulnerability scanning tools to identify and address potential security issues.
- Implement security protocols and standards to safeguard applications against threats and ensure data privacy.
- Enhance application performance by identifying bottlenecks and optimising server-side code and database queries.
- Cross-platform optimisation.
- Enhance application performance by identifying bottlenecks and optimising server-side code and database queries.
- Design responsive applications.
- Design and develop APIs.
- Participating in the design and creation of scalable software.
- Participate in deploying applications in cloud environments, using infrastructure-as-code and configuration management tools.
- Taking lead on projects, as needed.
- Maintenance of code integrity and organisation.
- Writing clean, functional code on the front- and back-end.
- Compile and analyse data, processes, and codes to troubleshoot problems and identify areas for improvement.
- Actively engage in debugging and resolving issues raised during testing or reported in production.
- Set up and maintain CI/CD pipelines to automate testing and deployments, ensuring consistent and rapid delivery of applications.
- Meet both technical and consumer needs.
- Write technical documentation.
Requirements
- Bachelor’s Degree in Computer Science or related field.
- 13+ years of experience in IT
- Proficiency in Python and experience with web frameworks such as Django, Flask, or FastAPI.
- Experience with code linters and formatters (e.g., pylint, black, flake8) to enforce coding standards.
- Experience with AI-powered code assistants (e.g., Amazon Q, GitHub Copilot), staying updated with advancements in AI-driven code technologies that can streamline Python web application development.
- Strong understanding of RESTful design and implementation.
- Solid experience with relational (e.g., Oracle, PostgreSQL) and non-relational databases (e.g., Elasticsearch, MongoDB).
- Excellent knowledge of ORM, schema design, efficient queries.
- Expertise in containerisation tools like Docker, Podman, and orchestration using Kubernetes.
- Knowledge of vulnerability scanning tools (e.g., OWASP), secure coding practices and standards, including authentication, authorisation, and encryption.
- Knowledge of code versioning tools such as Git or SVN.
- Knowledge of DevSecOps tools such as Jenkins, GitLab CI, GitHub Actions (Continuous Integration / Deployment).
- Familiarity with configuration management tools like Ansible.
- Experience with VM management, Linux.
- Good knowledge of agile methodology
Top Skills
What We Do
COSMOTE Global Solutions, as a member of OTE Group of Companies, is an ICT Systems Integrator delivering a broad range of ICT Solutions and Services.
CGS provides a broad range of ICT Services focusing on: Cloud, Data Centre operations, Networking, Cybersecurity, BI and Data Warehouse, Big Data, Service Desk, Proactive Monitoring, Operations and Support, Service Management, Project and Programme Management, and Professional Services.
OTE Group:
OTE Group is the largest technology provider in Greece. It is one of the top three listed companies with respect to capitalization, in the Athens Stock Exchange. Deutsche Telekom holds 46.9% of OTE’s share capital and the Greek State holds 5.6%. Find More about OTE Group
Our Vision:
We digitize societies so that everyone can live and enjoy at the fullest all possibilities offered now while also building on them for a better tomorrow.
Our Mission:
• We bring the best communication services to our customers
• We connect people
• We entertain
• We help businesses grow.
• We are leaders, pioneers, pillar of the economy and society
• With passion, faith and commitment
• We constantly strive to become better on all fronts
• We have a positive impact on society and the environment







