Development Team Leader (.Net)

OneOcean Group; Polska; Hybrid; PLN 260,000 - 380,000; Full time

Benefits offered by this job

Health Coverage

Vision Care

Group Insurance

Pension Plan

Multisport

Social Benefits

Counseling & Wellness

Job summary

OneOcean Group is seeking an experienced Development Team Leader (.Net) to guide a skilled development team in Poland. You will lead by example, drive engineering excellence, and ensure high-quality, scalable software delivery.

Collaborate with architects, product owners and other leaders to align technical direction with business goals. You will mentor engineers, promote best practices, and help evolve CI/CD and DevOps practices while fostering a culture of continuous improvement and knowledge

Qualifications

• 10+ years of commercial software development experience.
• 3+ years leading Scrum teams with Agile methodologies.
• Strong technical expertise in .NET and object-oriented programming.
• Experience with microservices, distributed architecture, GraphQL, REST APIs, event buses, and message queues.
• Solid understanding of Domain-Driven Design (DDD).
• Good understanding of client-server architecture and asynchronous programming.
• Proficiency in TDD, unit, integration, and acceptance testing.
• Familiarity with SQL/NoSQL (MS SQL Server, MongoDB), Docker, and cloud platforms (AWS/Azure).
• Exceptional communication, teamwork, leadership skills.
• Analytical mindset with a knack for leading by example.
• Experience with front-end technologies (React, HTML, CSS, JavaScript, jQuery).
• Experience with CI/CD pipelines, Jenkins, and modern DevOps practices.
• Experience with AWS/Azure cloud environments.
• Familiarity with application performance monitoring tools.

Responsibilities

• Lead a team of .NET developers, ensuring alignment on goals, quality, and delivery timelines.
• Mentor and coach team members to support technical and professional growth.
• Drive engineering excellence by promoting best practices in coding, architecture, and testing.
• Plan and manage team capacity, sprints, and milestones to ensure predictable delivery.
• Collaborate with other Team Leaders, Development Managers, Architects, and Product Owners to align engineering execution with business objectives.
• Ensure effective adoption and execution of agile methodologies within the team.
• Contribute to evolution of development processes, CI/CD pipelines, and DevOps practices.
• Foster a culture of continuous improvement, innovation and knowledge sharing.

Skills

Leadership

Scrum

Agile

C#.NET

OO programming

Front-end React

HTML/CSS/JS

DDD

Microservices

Distributed architecture

GraphQL

REST APIs

Event buses / Message queues

TDD / Testing

SQL/NoSQL (MS SQL, MongoDB)

Docker

CI/CD / Jenkins

Cloud (AWS/Azure)

DevOps practices

Communication

Tools

Docker

Jenkins

AWS

Azure

MS SQL Server

MongoDB

GraphQL

REST APIs

Job description

Development Team Leader (.Net)

Application Deadline: 1 December 2026

Department: Technology

Employment Type: Full Time

Location: Poland

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: Development Team Leader (.Net)

As a Team Leader will be responsible for guiding .Net development team. You will lead by example, driving engineering excellence, ensuring delivery of high-quality, scalable software. fostering a collaborative and innovative team culture. Working closely with other Team Leaders, Architects, and stakeholders. You will help shape technical direction, streamline delivery processes, and ensure alignment with business goals.

Your Voyage Ahead:

• Lead a team of .Net developers, ensuring alignment on goals, quality, and delivery timelines.
• Mentor and coach team members to support their technical and professional growth.
• Drive engineering excellence by promoting best practices in coding, architecture, and testing.
• Plan and manage team capacity, sprints, and milestones to ensure predictable delivery.
• Collaborate with other Team Leaders, Development Managers, Architects, and Product Owners to align engineering execution with business objectives.
• Ensure effective adoption and execution of agile methodologies (Scrum/Kanban) within the team.
• Contribute to the evolution of development processes, CI/CD pipelines, and DevOps practices.
• Foster a culture of continuous improvement, innovation, and knowledge sharing.

Recommended to bring on board:

• 10+ years of commercial software development experience.
• 3+ years leading Scrum teams with a solid grasp of Agile methodologies.
• Strong technical expertise in .NET and object-oriented programming.
• Experience with microservices, distributed architecture, GraphQL, REST APIs, event buses, and message queues.
• Solid understanding of Domain-Driven Design (DDD).
• Good understanding of client-server architecture and asynchronous programming.
• Proficiency in Test-Driven Development (TDD), unit, integration, and acceptance testing.
• Familiarity with SQL/NoSQL (MS SQL Server, MongoDB), Docker, and cloud platforms (AWS/Azure).
• Exceptional communication, teamwork, attention to detail, organizational, and leadership skills.
• Analytical mindset with a knack for leading by example.
• Ability to inspire, mentor, and lead by example.
• Experience with front-end technologies (React, HTML, CSS, JavaScript, jQuery).
• Experience with CI/CD pipelines, Jenkins, and modern DevOps practices.
• Experience with AWS/Azure cloud environments.
• Familiarity with application performance monitoring tools.

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.