About us

• We are a fast-growing company with clients across North America, building the world's first AI-powered tax payment platform, unifying tax payments in one secure portal. Our product replaces fragmented systems with a single automated, verified, and compliant workflow.

Role

• We're looking for a Senior Full-Stack Developer with a passion for clean, reusable code and the ability to take ownership of complex features — from back-end architecture to front-end UI integration. The ideal candidate will have strong experience with C#/.NET and React using TypeScript, and an interest in Python for rapid prototyping and AI.
• As the company is still in its early stages, we're looking for someone with high standards and strong opinions who can help establish a solid engineering foundation as we enter our next phase of growth.

Key responsibilities

• Own end-to-end development of resilient, stable, and secure features based on requirements developed by the product manager
• Collaborate with UX/UI designers to ensure seamless integration between back-end services and user interfaces
• Architect endpoints using OpenAPI
• Integrate with Accounting Software and Banking-as-a-Service vendors
• Diagnose and resolve complex back-end issues, including security vulnerabilities and stability concerns
• Contribute to architectural decisions and ensure the infrastructure supports long-term business goals and security requirements
• Leverage ML techniques (e.g., document extraction, LLMs) to extract and interpret information from documents
• Build and maintain services within a modern .NET application environment

Qualifications

• 7+ years in software development using C#/.NET, focusing on back-end services, API development, and enterprise-grade application design
• 5+ years of experience designing and implementing RESTful APIs and web services
• Strong experience with React and TypeScript for front-end development
• Working knowledge and appreciation of Python
• High standards for architecture, clean code, testing, and security
• Excellent English communication skills
• Experience in a regulated industry is a significant plus

Nice to have

• Experience with AI/ML integration (LLMs, document extraction)
• Familiarity with Banking-as-a-Service or accounting software integrations
• Experience in fintech or early-stage startup environments