Senior Software Developer

Senior Software Developer

Application Deadline

1 December 2026

Department

Technology

Employment Type

Permanent

Location

Romania- Constanta

Description

🚢 Discover OneOcean

OneOcean is a unified brand born from the integration of OneOcean and Ocean Technologies Group.

Owned by Lloyd’s Register, an organisation with more than 260 years of trust, integrity and leadership at sea, OneOcean combines the agility and ambition of a fast-moving innovator with the strength and stability of one of the world’s most trusted maritime institutions.

At the heart of OneOcean is a portfolio unlike any other in maritime. A comprehensive, integrated portfolio built on years of expertise, trusted by thousands of maritime professionals around the world.

🎯 Our Mission

Our mission is clear. In the race to zero emissions, our research, advisory and technical expertise and industry-firsts are supporting a safe, sustainable maritime energy transition. Today we are a leading provider of classification and compliance services to the marine and offshore industries, helping our clients design, construct and operate their assets to accepted levels of safety and environmental compliance.

🔍 Why Join OneOcean Crew?

• Legacy & Innovation: We were created more than 260 years ago as the world’s first marine classification society to improve and set standards for the safety of ships.
• Global Impact: Our digital solutions are relied upon by more than 30,000 vessels, following the acquisition of OneOcean in 2022 and Ocean Technologies Group in 2024.
• Product Offering: Covering five proven product areas - learning, fleet operations, compliance, voyage planning and performance management - supporting its customers from ship to shore, from training and people operations, to voyage compliance and optimisation.

🧭 Navigating the position

Software Developer

OneOcean is seeking a .NET Software Developer to help build, maintain, and enhance its maritime software. This role focuses on developing reliable, high‑performance applications used in mission‑critical maritime environments. You will work closely with product managers, designers, and fellow engineers to design, implement, and deliver new features, improve existing functionality, and ensure the overall quality of the platform. Your work will directly contribute to safe, efficient, and effective maritime operations for users worldwide.

🚢 Your Voyage Ahead

Develop and Maintain Software Applications

• Design, code, test, debug, and document software applications using .NET framework, cloud and related technologies.
• Ensure the performance, quality, and responsiveness of applications.
• Collaborate with the team to define, design, and ship new features.

Collaboration and Support

• Work with project leaders, product owners, and developers to understand business requirements and translate them into technical solutions.
• Provide ongoing maintenance, support, and enhancements in existing systems.
• Offer support to end-users of the application, by troubleshooting and problem solving.

Continuous Improvement

• Stay up-to-date with new technology trends and best practices in .NET development.
• Continuously improve the codebase, fix bugs, and optimize performance.
• Participate in code reviews to ensure code quality and shared knowledge.

Testing and Documentation

• Create and maintain comprehensive documentation for software solutions.
• Develop and implement unit and functional tests to ensure code quality.
• Assist in defining test scenarios and in testing the developed functionality.

🚢 Recommended to bring on board

• 5+ years in commercial development.
• Strong experience in .NET Framework/Core, C#, WPF, ASP.NET, Core, Entity Framework, MVVC, DI/IoC, SQL
• Proficiency in Test Driven Development, unit, integration, and acceptance testing.
• Experience with Microservices, distributed architecture, event buses, and message queues.
• Strong understanding of client-server architecture, asynchronous programming, REST API, and application logging.
• Familiarity with SQL (Postgres), and cloud platforms (AWS/Azure).
• Excellent communication, teamwork, detail-oriented, and analytical skills.

Desirable skills

• Knowledge and experience in Maritime or GIS.

🛳️Navigating Life with OneOcean: Unveil a Treasure Trove of Benefits

Premier Health Coverage

Dive into comprehensive health care with Polmed, covering everything from diagnostics to specialist consultations. Minimal costs for maximum health!

Vision Care Perks

See the world more clearly with glasses reimbursements every two years. Work and wellness in perfect harmony.

Group Insurance

Secure your peace with easy opt-in Warta Group Insurance. Family inclusion available, ensuring everyone you love is protected.

Pioneering Pension

Join the PPK Pension scheme effortlessly, with flexibility to adjust your involvement. OTG invests in your future, so you can enjoy the present.

Multisport Magic

Stay fit and energized with access to top-tier sports facilities. Your health, your choice, our support.

Social Benefits Galore

Embrace our Social Benefit Fund for a boost to your lifestyle. It's all about enhancing your OTG experience.

Wellness & Support

Unlock 24/7 access to professional counseling with our Employee Assistance Program. We're here for you in every way.