Principal .NET Engineer (Distributed Systems / Banking Integration)

Contract | Canada (Remote) | $75–100/hour, or Full-Time $150k-$175k per anum.

Build the next generation of digital banking platforms.

At Aequilibrium, we help Canada's leading financial institutions modernize digital banking through cloud-native platforms, AI, XR, and enterprise software engineering.

We're looking for a Principal .NET Engineer to help architect and build distributed backend systems powering digital banking experiences used by hundreds of thousands of members.

This is not a traditional CRUD application role.

You'll work on large-scale distributed services integrating digital banking, identity, payments, and core banking platforms while partnering with senior architects and engineering leaders.

If you enjoy solving difficult distributed systems problems, designing scalable architectures, and mentoring engineers, we'd love to speak with you.

What You'll Do

• Design and build scalable distributed backend services using modern .NET technologies.
• Architect integrations between digital banking platforms, payment systems, identity providers, and core banking applications.
• Lead technical design discussions and influence architecture decisions.
• Build resilient microservices capable of supporting high-volume financial transactions.
• Collaborate with solution architects, product managers, UX designers, and engineering teams.
• Review architecture and code to maintain high engineering standards.
• Mentor senior engineers and promote engineering best practices.
• Help modernize legacy systems into cloud-native distributed platforms.

Required Qualifications

• 10+ years of professional software engineering experience.
• Extensive experience building enterprise applications using C# and .NET.
• Deep understanding of distributed systems and microservice architectures.
• Strong experience designing scalable REST APIs and asynchronous messaging solutions.
• Experience with distributed application frameworks such as MassTransit.
• Experience designing cloud-native applications on Azure.
• Strong knowledge of SQL Server and enterprise data modeling.
• Advanced understanding of UI/UX design principles and how backend architecture supports exceptional user experiences.
• Experience working in Agile engineering environments.
• Excellent communication skills with the ability to work directly with architects and business stakeholders.

Preferred Qualifications

Experience with one or more of the following:

• CQRS (Command Query Responsibility Segregation)
• Dependency Injection using Autofac
• Java Spring Boot
• AngularJS
• Front-end or Full Stack development
• Event-driven architecture
• Distributed messaging
• Banking or financial services platforms
• Identity and authentication systems

What We're Looking For

We're looking for engineers who think beyond writing code.

You'll succeed if you:

• Enjoy solving complex architecture challenges.
• Can balance scalability, performance, security, and maintainability.
• Naturally mentor other engineers.
• Challenge assumptions and improve technical direction.
• Take ownership of systems from design through production.

Why Join Aequilibrium

• Work on digital banking platforms used across Canada.
• Solve meaningful distributed systems challenges.
• Collaborate with highly experienced architects and engineering leaders.
• Influence technical direction rather than simply implementing requirements.
• Fully remote within Canada.
• Competitive contract rate: $65–80/hour, depending on experience.

Nice-to-Have Technologies

Rather than expecting expertise in every technology, experience with several of the following is valuable:

• .NET 8+
• ASP.NET Core
• Azure
• Docker
• Kubernetes
• MassTransit
• SQL Server
• REST APIs
• Event-driven architecture
• Microservices
• CQRS
• Autofac
• Angular
• GitHub Actions / Azure DevOps