Senior Back End Software Engineer

About Signal Ocean: Signal Ocean is the technology arm of the Signal Group. Our primary product, The Signal Ocean Platform, helps shipping and commodities professionals navigate their complex decision making. Driven by advanced machine learning and artificial intelligence, our technology suite provides tailored, exclusive insights that support our clients in achieving performance and efficiency. By securely handling and combining private and public shipping data flows, and applying advanced analytics, insights are delivered over web and mobile applications, as well as through a rich set of APIs and SDKs. Our backend architecture is abstracted to modularly offer deep analytics capabilities that are leveraged in the solutions that we offer or can be directly embedded in our client's system topologies.

About the role:

We're looking for an experienced Senior Back-End Software Engineer (C#/.NET) to join our Backend team in Athens or London.

You'll play a key role in designing and developing our backend systems—building reliable, scalable, and high-performing components that power our data-driven products. You'll work with a talented team of engineers focused on backend architectures, microservices, distributed systems, and cloud infrastructure.

Our Tech Stack: C#, .NET Core, Service Fabric, Python, MongoDB, MSSQL Server, Redis, Docker, Kubernetes, Grafana, Influx, and more.

We work in Agile teams using Dual-Track Scrum, where engineers contribute to product discovery, delivery, and continuous optimization.

Design, implement, and maintain high-quality, performant, and secure backend services and APIs.

Translate product and business requirements into elegant, scalable technical solutions.

Proactively identify bottlenecks, inefficiencies, and architectural improvements - and lead efforts to resolve them.

Write clean, well-structured, and testable code following SOLID principles and best practices.

Collaborate with peers to review code, share knowledge, and elevate technical standards across the team.

Break down complex problems into manageable deliverables, balancing short-term delivery and long-term scalability.

Communicate clearly with team members, ensuring alignment on goals, timelines, and quality expectations.

Take ownership of your work end to end - from ideation to deployment - while contributing to shared team objectives.

Help maintain a healthy team dynamic by supporting others, giving feedback, and fostering collaboration.

• Strong proficiency in C#/.NET Core and experience in building distributed systems or microservices.
• Understanding of design patterns, SOLID principles, and software architecture best practices.
• Experience with relational and non-relational databases (MSSQL, MongoDB) and ORM frameworks (e.g., Entity Framework, Dapper).
• Working knowledge of cloud environments, ideally Microsoft Azure.
• Familiarity with Agile practices and related tools (Visual Studio, Git, TeamCity, Jira).
• Degree in Computer Science or related technical field, or equivalent experience.
• Excellent command of English, both written and spoken.

What we offer:

• Generous compensation with additional performance incentives.
• Coverage under the company's collective health insurance plan.
• Opportunity to work alongside experienced people with deep knowledge in software engineering, data science & shipping business who are always eager to mentor.
• Signal's hybrid work policy currently includes six on-site working days per month, during which our happy hour events take place. Starting January 2026, we'll transition to a hybrid setup with nine on-site days per month.
• 2-4 weeks of onboarding training to prepare you for your new role, having the opportunity to meet about 30 trainers while diving deep into our products and/or the shipping world.
• Career growth opportunities and a structured development discussion every 4 months.
• Personal learning budget for training, seminars, conferences (750 to 2000 EUR annually depending on seniority).
• Regular team bonding events and activities.
• Fitness benefits to support your health and wellbeing 

Strict adherence to Confidentiality, Intellectual Property and Non-Compete provisions is expected.

All applications will be considered under the terms and conditions of confidentiality in accordance with the regulations of personal data protection.

We are an Equal Opportunity Employer committed to diversity and inclusion in the workplace. At Signal, we believe that diversity of opinions, approaches and viewpoints is key to our innovation and success and we encourage that with our hiring, development and rewards practices. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristics by law and take actions to eliminate those from our , pregnancy, or any other protected characteristics by law and take actions to eliminate those from our workplace.