Senior .Net Developer

OneOcean Group; Polska; On-site; PLN 80,000 - 120,000; Full time

Benefits offered by this job

Premier Health Coverage

Vision Care Perks

Group Insurance

Pioneering Pension

Multisport Magic

Social Benefits Galore

Wellness & Support

Job summary

OneOcean Group is seeking a Senior .Net Developer to join their fully remote team in Poland. You will design and maintain software applications, collaborating with various stakeholders. Ideal candidates should hold a degree in computer science and possess extensive experience in .NET, agile practices, and developing enterprise-grade solutions. This role includes responsibilities like software documentation, unit testing, and continuous improvement of the codebase. The company offers a comprehensive benefits package including health coverage, vision care perks, and social benefits.

Qualifications

• Bachelor’s degree in computer science or related technical field.
• Proven experience in SaaS or product-centric environments.
• Strong knowledge of microservices, asynchronous programming, and databases.

Responsibilities

• Design, code, test, debug, and document software applications using .NET.
• Collaborate with the team to define and ship new features.
• Create and maintain comprehensive documentation for software solutions.

Skills

.NET

Object-oriented programming

Microservices architecture

SQL

NoSQL databases

REST APIs

Asynchronous programming

Docker

CI/CD pipelines

Agile/DevOps practices

Education

Bachelor’s degree in computer science or Software Engineering

Tools

AWS

Azure

RabbitMQ

Job description

Senior .Net Developer

Application Deadline: 15 May 2026

Department: Technology

Employment Type: Full Time

Location: Poland

Description

Senior .Net Developer is based in Poland and is fully remote, reporting to Technical Technology Lead. You will dive deep into the realms of technological marvels, crafting the backbone of an educational revolution. With each line of code, you'll navigate through uncharted waters, shaping a world where learning transcends boundaries. Ready your sails for a journey where your work illuminates the path to discovery and knowledge for learners across the globe. This isn't just a role; it's your mark on the future of digital education.

Key Responsibilities:

Develop and Maintain Software Applications

• Design, code, test, debug, and document software applications using .NET, 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.

Skills, Knowledge, and Experience Required:

Educational Attainment

• Bachelor’s degree in computer science, Software Engineering, or a related technical field
• Equivalent practical experience or certifications (e.g. Microsoft Certified: Azure Developer Associate, .NET certifications) will also be considered
• A commitment to continuous learning and staying current with modern development practices is highly valued

Professional Background

• Proven experience in SaaS or product-centric environments, ideally involving complex or data-driven platforms
• Comfortable working in fast-paced, high-scale tech teams with Agile/DevOps practices
• Experience contributing to enterprise-grade software with global user bases
• Maritime or e-learning domain knowledge is a plus—but not required
• Ability to quickly understand and adapt to domain‑specific challenges in regulated or mission‑critical sectors

Expected Areas of Competence

• Expertise in .NET and object-oriented programming
• Extensive experience commercial development experience
• Strong knowledge of microservices architecture, distributed systems, and message queues (e.g. RabbitMQ)
• Proficient in Test-Driven Development and writing unit, integration, and acceptance tests
• Skilled in REST APIs, asynchronous programming, and client-server architecture
• Experience with SQL and NoSQL databases (e.g. MSSQL, MongoDB)
• Hands‑on with Docker and cloud platforms (AWS or Azure)
• Familiar with CI/CD pipelines, automation, and performance tuning
• Strong communication, collaboration, and analytical skills
• Bonus: Experience with front-end tech (HTML, CSS, JavaScript), GraphQL, Keycloak, Jenkins, and ElasticSearch

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.