Senior .NET Developer

Mariner Co; Halifax; Hybrid; CAD 100,000 - 140,000; Full time

Benefits offered by this job

Remote work

Competitive salary

Health, dental, vision insurance

Training opportunities

Paid time off + longevity programs

Job summary

Mariner is seeking a Senior .NET Developer to join our talent pipeline and engage on client projects and internal initiatives in Halifax. You will design, develop, and maintain enterprise-grade apps using C#, .NET, RESTful APIs, and SQL Server while collaborating with architects, analysts, and product teams.

You will mentor junior developers, contribute to cloud modernization efforts, and participate in Agile practices. Remote-friendly, with opportunities across Atlantic Canada and beyond.

Qualifications

• 7+ years of software development with Microsoft tech.
• Strong C#/.NET Framework/.NET Core/.NET 8 and ASP.NET Core.
• Designing RESTful APIs and SQL Server databases.

Responsibilities

• Design, develop, and maintain enterprise-grade apps using Microsoft technologies.
• Build scalable web apps, APIs, and backend services in C# and .NET.
• Collaborate with architects, analysts, PMs, and tech teams to deliver quality solutions.
• Mentor junior developers and contribute to cloud, modernization, and digital initiatives.

Skills

7+ years experience

C#, .NET Framework

.NET Core/.NET 8

ASP.NET Core

RESTful APIs

SQL Server

Entity Framework

Git

Agile

Education

Bachelor's degree in CS or related field

Tools

Azure DevOps

Docker

Azure services

Angular/React/Blazor

Job description

Posted Tuesday, August 11, 2026 at 3:00 AM

WHO WE ARE:

Mariner innovates always and everywhere, turning novel ideas into practical solutions. From products and services to venture creation, we build better futures powered by people. Our purpose has always been to be a great, everlasting technology company for those who make an impact - elevating people, data, and technology in the best way to solve hard problems. We partner with people embracing change, leveraging data, cybersecurity, cloud, and change management to drive successful business outcomes that matter to our customers.

Mariners build for change. LikeSHIFT Energy , our energy management and decarbonization company. OrEast Valley created to scale social economic impact in our communities through investment and mentorship of emerging change-makers and their companies.

Mariner’s purpose has always been to be a great, everlasting technology company and the core values that guide us every day are:

OUR VALUES

• We care for our team.
• We care about the impact we have on our community.
• We serve by solving complex problems.
• We grow because growth fuels opportunities.
• We innovate always and everywhere.
• We build a business that lasts.

Overview

At Mariner, we are always looking to connect with talented Senior .NET Developers who are interested in upcoming opportunities across our client engagements and internal projects. By joining our talent pipeline, you'll be considered for upcoming roles that align with your skills and experience as new opportunities arise.

What You’ll Do

• Designing, developing, and maintaining enterprise-grade applications using Microsoft technologies.
• Building scalable web applications, APIs, and backend services using C# and .NET.
• Collaborating with architects, business analysts, project managers, and other technical teams to deliver high-quality solutions.
• Participating in technical design, code reviews, and solution architecture discussions.
• Troubleshooting and resolving application issues while ensuring optimal performance and reliability.
• Developing and optimizing database solutions and integrations.
• Supporting Agile development practices and contributing throughout the software development lifecycle.
• Mentoring junior developers and sharing technical expertise across teams.
• Contributing to cloud, modernization, and digital transformation initiatives.

Qualifications

• 7+ years of experience in software development using Microsoft technologies.
• Strong expertise in C#, .NET Framework, .NET Core/.NET 8, and ASP.NET Core.
• Experience designing and developing RESTful APIs and web services.
• Strong experience with SQL Server, database design, and performance optimization.
• Experience working with Entity Framework and modern development frameworks.
• Proficiency with source control tools such as Git.
• Experience working in Agile environments.
• Excellent problem-solving, communication, and stakeholder engagement skills.

Preferred Skills

• Experience with Microsoft Azure services and cloud-native development.
• Experience with Azure DevOps and CI/CD pipelines.
• Knowledge of microservices architecture.
• Experience with Docker and containerized deployments.
• Exposure to front-end technologies such as Angular, React, or Blazor.
• Consulting, client-facing, or professional services experience.
• Connect with a collaborative team focused on delivering exceptional client outcomes.
• Always improving your skills and knowledge: you want to be the best at what you do
• Curious and creative; comfortable taking on new problems and challenges
• A self-starter with the ability to recommend priorities to the project leader
• Comfortable working through problems and figuring things out with minimal supervision
• Great problem-solving skills: thorough and reliable
• Able to work in a team: share knowledge and assist other team members
• Agood communicator: able to explain your ideas and recommendations
• Well organized and dependable under pressure: you manage your time effectively
• Energized by our company values!

MARINER OFFERS YOU:

• A values-driven workplace where people really matter.
• Support forremote work/work from home.
• Competitive salary, retirement savings program, and rewards program
• Comprehensive health, dental, vision, life and disability insurance plans and access to e-health care
• Paid vacation, maternity/parental leave, paid sick leave and paid Mariner MyLife days.
• Unlimited training

WHY MARINER?

We believe in making a positive impact in the communities where we live and work! Not only are we passionate about nurturing a thriving technology sector here in Atlantic Canada, but we are also committed to solving technology challenges that will make an impact worldwide. Technology is everlasting, and we take pride in connecting world class talent to world class projects and business solutions.

If you are an IT Professional, Software Professional, or Management Consultant, that is passionate about career development, data, and problem solving, we want to hear from you! If this sounds like someone you know, share this with them so they do not miss the opportunity to experience Mariner!

To achieve this, we know we need to be all in on training and development of our team so we can continue to move the needle in the technology sector together. Of course, we offer competitive compensation and benefits packages to our team, but our competitive edge is the development and training that our team experiences every day.

Be part of our vibrant community that values diversity and embraces inclusion at every level. We are committed to fostering a culture where individuals from all backgrounds and walks of life feel empowered to contribute their unique perspectives. Our collaborative environment celebrates the richness of ideas and experiences, and we believe that by embracing diversity, we can achieve greater innovation and excellence together. Come and help us create a workplace that reflects the beautiful tapestry of our global community.