Senior Software Engineer (Full-Stack)

See what you can do with Prophix At Prophix, we’re building the platform that helps finance teams stop managing spreadsheets and start driving strategy. Prophix One™ brings planning, reporting, consolidation, and automation together in a single place, and we are expanding its AI capabilities faster than ever. If you want to work on a product that genuinely changes how finance teams operate, and do it alongside people who care about getting it right, this is where you want to be. We’re headquartered in the Greater Toronto Area, with teams and offices across North America, Europe, and Australia. Trusted by more than 3,000 finance teams across 100+ countries, Prophix One™ is built for organisations that want to plan smarter and move faster. As a Senior Full-Stack Engineer on the FP&A Plus platform, you will design, build, and maintain the modular .NET capabilities that more than 2,500 finance teams around the world rely on every day for budgeting, reporting, and integrated financial planning. Working within a collaborative agile team alongside engineers, product managers, and QA specialists, you will own meaningful slices of a large, domain-driven modular-monolith — shipping high-quality, testable code that directly shapes how finance professionals plan and make decisions. This is a role for an engineer who takes pride in correctness, cares about architecture, and wants their work to matter at scale. Requirements What You Will Do Design and build new features within one or more FP&A Plus bounded-context modules (budgeting, workflow, reporting, journal management, data import, and more), following established Abstractions / implementation / UnitOfWork / UnitTests patterns. Write efficient, correct data-access code against AWS Aurora Serverless (PostgreSQL), applying a clear understanding of its auto-scaling capacity model, connection-pooling behaviour, and timeout semantics rather than assuming fixed-capacity database behaviour. Build and consume event-driven integrations using AWS SQS via MassTransit and scheduled workflows via Quartz.NET as part of cross-module feature delivery. Apply the platform's module-flag-based authorization model correctly when building new endpoints or MCP tools that interact with tenant data. Ensure quality through automated testing with xUnit, Moq, and FluentAssertions in a continuous integration environment, including integration tests tagged for the DB-integration test suite where appropriate. Investigate and resolve defects across pre-production, production, and post-release patches with thorough root-cause analysis rather than surface-level fixes. Contribute to code reviews, architecture discussions, and performance tuning of data-heavy operations within your module area. Coordinate cross-module technical dependencies, clearly defining and respecting cross-module contracts in a large, distributed modular system. What You Will Bring We hire for potential as much as experience. If this role excites…