Architect and ship features end-to-end across .NET 9 and Next.js 15. Work directly with the CTO on the PACT protocol reference implementation. AI-native team — Cursor and Claude Code are daily drivers.
Brisbane HQSovereign-routed · stored in Australia
About Tailor
Tailor builds document collaboration software for teams that need reviews, approvals, evidence, ownership changes, and decision history to stay connected in one product.
The product is live across local government, construction, and mining; in pilot with a major state-government department; and being rolled out with a tier-1 systems integrator.
The engineering problems sit across a modern .NET 9 and Next.js stack, with real customer load and real cost discipline.
The Role
You will be Tailor's Senior Full-Stack Developer, working directly with the CTO. You will not be siloed into frontend or backend — you will architect and ship features end-to-end, working in a vertical-slice architecture across the full stack.
You will be building the reference implementation for PACT — our open multi-agent consensus protocol — integrating advanced LLM capabilities and driving real-time collaboration features.
We are an AI-native engineering team. We expect you to leverage AI to write the boilerplate so you can focus on architecture, security, and the genuinely hard problems.
What You Will Do
Architect and ship features end-to-end across the .NET 9 WebAPI and Next.js 15 frontend — vertical slices, not frontend/backend silos
Extend and optimise the PACT protocol — our agent-consensus reference implementation — and set the standard for how production agents collaborate
Build robust LLM integrations using Semantic Kernel and Azure OpenAI; manage prompt libraries and RAG pipelines
Own MediatR CQRS feature design, enforce strict multi-tenant data isolation, and manage EF Core migrations with discipline
Develop low-latency real-time collaboration features over SignalR hubs
Work strictly via trunk-based development with Git worktrees, write impeccable PRs, enforce architectural conventions, and mentor the broader team
The Stack You Will Wield
Backend: .NET 9, ASP.NET Core WebAPI, CQRS (MediatR), EF Core, Semantic Kernel, SignalR, OpenTelemetry
Data & Docs: Azure SQL, DOCX as source-of-truth, Collabora Online (WOPI)
Infra & Ops: .NET Aspire, Azure Container Apps, Bicep IaC, GitHub Actions CD
What We Are Looking For
5+ years shipping production systems, with experience owning non-trivial features end-to-end
Elite .NET and React fluency. Deep, modern experience with C# (Core, async, DI, EF Core) and TypeScript/React (hooks, suspense, server components)
Architectural rigour. Strong experience with CQRS, vertical-slice architecture, and designing SQL databases for multi-tenant SaaS. You know when to abstract and when to keep it fiercely simple
Cloud and CI/CD literacy. Comfortable in Azure (preferred) or AWS/GCP, with a solid grasp of Infrastructure as Code and automated deployment pipelines
Incremental mindset. You ship in small isolated PRs against a trunk branch, read existing conventions before writing new ones, and don't over-architect in a vacuum. Highly fluent with Git worktrees and conflict resolution
Production hygiene. You take strict tenant boundaries, EF Core migrations, and the testing pyramid seriously. You leave impeccable code reviews and communicate technical decisions sharply in writing
AI-native by default. You use Cursor, Claude Code, or equivalent tooling as a daily driver — and have opinions on where AI accelerates engineering and where it gets in the way
Bonus Points
Built LLM integrations (prompt engineering, function calling, RAG) in production
Experience with complex document processing (OOXML, WOPI, Collabora)
Built tools for MCP or other agent protocols
Why Tailor
Architectural ownership. You are building foundational architecture from the ground up, with a direct line to product and engineering leadership
Bleeding-edge stack. Latest frameworks (.NET 9, React 19) in an environment that actively encourages technical exploration
Elite developer experience. We invest heavily in tooling, local orchestration (.NET Aspire), and AI assistants so you can focus on production-grade decisions
Real product, real customers. Live deployments, partner-funded rollouts, and a roadmap with shape
Opportunity for equity in the business for the right person
How to Apply
Drop your CV (and a cover letter if you have one) into the Apply form at the top of this page. Include a link to your GitHub, a project you are fiercely proud of, or describe the most complex architectural problem you have solved recently — in the cover letter.
If you would rather email us directly, reach us at careers@tailor.au.
We read every application but won't respond to everyone — we simply don't have the time. If we want to chat, we will reach out.