Junior Software Engineer

4 days ago

Athens, Attica, Greece Rivertech Full time €25,000 - €60,000 per year

Junior software engineer

Rivertech has created the first operating system for smart homes, which enables you to automate and monitor your entire smart home with RiverOS.

We are currently looking for a passionate Junior software engineer to design, develop and maintain software solutions.

Junior software engineer responsibilities include gathering user requirements, defining system functionality and writing code mainly in Python and other languages. Our ideal candidates are familiar with the software development life cycle (SDLC) from preliminary system analysis to tests and deployment. Ultimately, the role of the Junior software engineer is to build high-quality, innovative and fully performing software that complies with coding standards and technical design.

You will have the opportunity to be part of a team that is working on the state of art technologies.

Responsibilities

  • Execute full software development life cycle (SDLC)
  • Develop flowcharts, layouts and documentation to identify requirements and solutions
  • Write well-designed, testable code
  • Produce specifications and determine operational feasibility
  • Integrate software components into a fully functional software system
  • Develop software verification plans and quality assurance procedures
  • Document and maintain software functionality
  • Troubleshoot, debug and upgrade existing systems
  • Deploy programs and evaluate user feedback
  • Comply with project plans and industry standards
  • Ensure software is updated with latest features

Requirements and skills

  • 1–2 years of experience in end-to-end software engineering—designing
  • Strong Python development skills, including asynchronous programming and writing well-tested, maintainable code
  • Familiarity with Python web frameworks (AioHTTP/Flask) and REST/gRPC API design
  • Understanding of system design fundamentals: modular architectures, data modeling, event-driven patterns, and trade-offs
  • Solid grasp of networking principles: TCP/IP, DHCP, DNS, HTTP/WebSockets, basic TLS/PKI
  • Experience with database systems (SQL and NoSQL), including schema design, indexing, and query optimization
  • Proficiency with containers and developer tooling (Docker, Compose) and CI/CD workflows (automated testing and deployments)
  • Secure coding practices for Python web apps: input validation, authN/authZ (OAuth2/JWT), secrets management
  • Ability to document requirements/specifications and collaborate using Git-based workflows
  • Experience with test-driven development and quality assurance practices
  • Fluent in English and Greek
  • BSc in Computer Science, Engineering, or related field

Nice-to-have:

  • IoT awareness: device-to-cloud patterns and common protocols (e.g., MQTT; familiarity with Zigbee/Z-Wave is a plus)
  • Practical knowledge of scaling and reliability: horizontal scaling, load balancing, caching, idempotency, retries/backoff, and rate limiting
  • Cloud infrastructure familiarity (AWS and/or Google Cloud): compute, storage, networking (VPC), IAM, monitoring/observability
  • Applied AI/ML experience in fine-tuning or training models (LLMs/classical), building RAG pipelines and evals/guardrails and/or working with embeddings/vector stores

Benefits

  • Rivertech provides a dynamic and creative environment that gives the opportunity to team members to evolve their skills, broaden their knowledge and interact with new technologies
  • Competitive salaries
  • Target based bonuses
  • A hybrid work environment, combining remote and on-site collaboration

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