Mid - Senior Full Stack Developer

Sirius Technology
Ongoing position Commitment
Flexible Weekly Hours
Remote Location
February 21, 2026 Posted

Job Description

Mid–Senior Backend Engineer (.NET) Full-time | Product Company | Hybrid / Remote-Friendly

We're partnering with a fast-growing product company to hire a Mid–Senior Backend Engineer to join a small, high-performing engineering team building a modern SaaS platform used by member-based organisations.

This is an excellent opportunity for an engineer who enjoys ownership, wants exposure to product decisions, and prefers working in a collaborative, low-bureaucracy environment where shipping quality software matters more than process.

The Opportunity

You'll join a tight-knit engineering and product team building and evolving a platform that helps organisations better connect with and serve their members through integrated CRM, finance, learning, engagement, and community tools. This role is primarily backend-focused, but engineers interested in growing broader full-stack capability will have the opportunity to do so.

What You'll Be Doing

  • Designing and building backend services and APIs using .NET technologies
  • Translating business requirements into clean, maintainable solutions
  • Integrating third-party services such as payment, messaging, and communication platforms
  • Contributing to improvements in architecture and engineering practices
  • Supporting and modernising parts of legacy systems where required
  • Collaborating closely with product and engineering teams on solution design and delivery
  • Helping improve reliability, performance, and scalability of the platform

What We're Looking For

  • 3–6 years' backend development experience using .NET / C#
  • Experience building APIs with ASP.NET Core
  • Exposure to legacy .NET Framework / ASP.NET MVC environments
  • Strong experience with SQL Server (NoSQL exposure is beneficial)
  • Familiarity with Azure services and CI/CD practices
  • Understanding of software design principles and maintainable architecture
  • Comfortable improving and evolving existing systems
  • Ability to work both independently and collaboratively

Nice to Have

  • Frontend experience with HTML, CSS, JavaScript, or Angular
  • Experience integrating payment, messaging, or communication platforms
  • Exposure to reporting or analytics tooling
  • Experience with microservices or event-driven architectures
  • Interest in expanding into full-stack development

Salary: $130,000 - $150,000 per annum Job Type: Permanent

Job Details

Commitment: Ongoing position
Weekly Hours: Flexible
Remote: Yes
Posted: February 21, 2026
Updated: February 21, 2026

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