.NET Developer (Application Support)

Company: OneOcean
Location: Constanta
Type: remote
Posted: Aug 19, 2026
Views: 0
🚢 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: .NET Developer

OneOcean is seeking a .NET 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.
Application Support:
  • Investigate, diagnose, and resolve application issues using .NET where necessary across multiple environments to ensure system.
  • Assist with deployments, upgrades, and releases, ensuring minimal disruption to users.
  • Contribute to fixes and minor enhancements by reviewing, updating, testing, and documenting code where required.
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 bugs and support solutions.
  • Develop and implement unit and functional tests to ensure code quality.
  • Assist in defining test scenarios and in testing the developed functionality.

  • 3+ years in commercial development.
  • Intermediate experience in .NET Framework/Core, WPF, ASP.NET Core, ASP.NET , MVVC, DI/IoC.
  • Familiarity with SQL/NoSql (MsSQL, MongoDB), Docker, and cloud platforms (AWS/Azure).
  • A keen eye and good investigation skills.
  • Excellent communication, teamwork, detail-oriented, and analytical skills.
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. OneOcean 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 OneOcean experience.
Wellness & Support: Unlock 24/7 access to professional counseling with our Employee Assistance Program. We're here for you in every way.

Apply Now ♡ Save Job

About the Company

Name: OneOcean
Location: Global (offices around the globe spanning all major time zones)
Website: https://careers.oneocean.com

OneOcean is proudly owned by Lloyd’s Register, which means we draw on over 260 years of maritime experience to deliver the world’s most powerful digital operating system, a system which accelerates performance, fuels growth and supports the wellbeing of people and the planet. We’re working to reshape the way maritime professionals see their world by bringing together people, data and workflows across every vessel and voyage, we help reduce risk, improve safety and power sustainable growth. As part of the Lloyd’s Register group, we have offices around the globe spanning all major time zones, supporting our clients with the challenges of today and tomorrow, as a trusted partner for maritime businesses worldwide. At OneOcean, we are committed to fostering a diverse and inclusive workplace where everyone can thrive. We are proud to be an equal opportunity employer, and all qualified applicants will be considered without regard to race, religion, gender, gender identity or expression, sexual orientation, national origin, disability, or age.

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