Back End Software Engineer
About the job
- A minimum Master's degree (EQF Level 7) with at least 5 years of IT experience, a Bachelor's degree (EQF Level 6) with at least 7 years of IT experience, or a secondary education diploma granting access to higher education with at least 12 years of professional IT experience is required.
- Proficiency in back-end development with Python and experience working with frameworks such as Spring Boot, Hibernate, and Node.js are required.
- A strong understanding of the full web development lifecycle, programming concepts, development tools, and best practices is required.
- Experience with Application Performance Monitoring tools such as Dynatrace, Splunk, and Elastic APM, and knowledge of OpenTelemetry for metrics, logs, and distributed tracing are required.
- Strong experience with relational databases, including PostgreSQL, Oracle, and MySQL, including the ability to write complex SQL queries and design efficient database structures, is required.
- Knowledge of NoSQL databases such as MongoDB, CouchDB, and Cosmos DB, including consistency and performance considerations, is required.
- Experience with version control systems and development workflows, including GitFlow and trunk-based development, and exposure to legacy systems using SVN are required.
- Experience designing, developing, documenting, and securing RESTful APIs and web services, including use of OpenAPI/Swagger, is required.
- Knowledge of containerization and orchestration technologies such as Docker and Kubernetes is required.
- Understanding of authentication and authorization standards, including OAuth 2.0, OpenID Connect, JWT, and EU Login, is required.
- Experience working with and a strong understanding of the i2 technology stack are required.
- One of the following or an equivalent certification is required: AWS Certified Developer, Microsoft Azure Developer Associate, or CNCF Certified Kubernetes Application Developer (CKAD).
- Develop and maintain back-end web applications, services, and business logic.
- Design, develop, and optimize APIs and server-side functionality.
- Integrate front-end components with back-end systems and databases.
- Design and implement efficient, scalable, and secure data storage solutions.
- Apply security best practices, including input validation, authentication, authorization, secure storage, logging, and monitoring.
- Ensure application performance, scalability, and reliability through continuous optimization.
- Participate in the design and development of scalable software solutions.
- Maintain clean, organized, and high-quality code following established coding standards.
- Analyze, troubleshoot, and resolve application issues through code review, monitoring, and debugging.
- Perform unit and integration testing, validate code changes, and ensure software quality.
- Deliver solutions that meet functional and non-functional requirements and user expectations.
- Create and maintain technical documentation.
- Configure and support cloud-based back-end services, including serverless functions, storage services, and managed Kubernetes environments.
- Implement and maintain authentication and authorization mechanisms to secure APIs and services.
- Develop and maintain automated unit and integration tests within CI/CD pipelines.
About the company
Uni Systems provides ICT services with a focus on systems integration for enterprises. It designs and implements technology solutions by coordinating hardware, software, and services to meet client goals, often spanning consulting, deployment, and managed support across end-to-end IT projects. Originating as one of Greece’s first IT firms, it built a long track record in establishing computer systems at universities and expanded through acquisitions and cross-border operations. Today, part of the Quest Group, Uni Systems differentiates itself through its extensive European footprint, history of strategic acquisitions (e.g., Intelli Solutions) and minority stake in Compellio, and its ability to deliver large-scale IT programmes across more than 20 countries. The company’s goal is to be a leading ICT corporation in Europe, helping organizations modernize and connect their technology ecosystems through integrated solutions and services.
Company Size
501-1,000
Company Stage
N/A
Total Funding
N/A
Headquarters
Athens, Greece
Founded
1964
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Simplify's Take
What believers are saying
- EU Commission’s 326 million euro cybersecurity framework expands recurring services revenue through 2029.
- NATO’s five-year CSDM selection opens task orders across identity, endpoint, cloud, and analytics.
- Compellio and PROBOTEK investments deepen blockchain, IoT, and drone offerings for 2026 expansion.
What critics are saying
- EUCYBERSAFE depends on Unisys-led consortium execution; failure damages Uni Systems’ Brussels credibility by 2029.
- NATO CSDM awards in 2026 create delivery pressure across five cyber lots immediately.
- Competing integrators like Wavestone and Unisys can compress margins and marginalize Uni Systems.
What makes Uni Systems unique
- Quest-backed Uni Systems won EUCYBERSAFE Lot 1, spanning 2025-2029 EU cybersecurity operations.
- Uni Systems joined Microsoft Fabric Featured Partners on 2025-10-09, signaling enterprise cloud credibility.
- Uni Systems earned Microsoft Azure AI specialization in 2025, rare among regional integrators.
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Benefits
- Health Insurance
- Hybrid Work Options
- Meal Benefits
- Training Programs
- Employee Discounts