Senior Fullstack AI Developer (Python/React)

Location: Stockholm, Sweden; hybrid office work. Regular support during US hours is required.

Salary: 82,500–97,500 SEK per month, depending on the equity option.

Company

hirify.global builds AI tax preparation software trusted by accounting firms, helping tax professionals handle judgment-heavy workflows and reduce administrative work.

What you will do

• Build agentic workflows that mirror how tax professionals make judgment calls.
• Develop evaluation and verification systems that measure AI accuracy against professional standards.
• Build model integrations and tooling that make probabilistic systems accurate, transparent, and trustworthy for high-stakes tax work.
• Develop and maintain fullstack features across AI tax preparation, planning, and review products.
• Own the user experience and backend logic for tax-professional workflows, while monitoring metrics and deciding what to improve.
• Keep the codebase clean, typed, and performant as the product scales.

Requirements

• Professional experience with TypeScript, React, and Python.
• Experience building complex, data-heavy user interfaces and backend services.
• Familiarity with cloud infrastructure on Google Cloud and/or Azure.
• Ability to make decisions with incomplete data and take ownership of outcomes.
• Empathetic, curious, collaborative, detail-oriented, and pragmatic approach to product development.
• Willingness to work in a high-paced environment and support customers during US hours.

Nice to have

• Experience in fast-paced startups or regulated industries.
• Experience taking a product from 0 to 1 and supporting real users.

Culture & Benefits

• High-performance, high-accountability environment focused on ownership, momentum, customer experience, and resolving problems fully.
• Transparent company finances, team salaries, stock options, and anonymous team feedback.
• At least 30 days of holiday per year.
• Mandatory benefits and additional benefits in Europe; fully covered platinum-level medical expenses and dependent coverage in the US.
• Company-wide offsites every four months and performance reviews every four months.

Hiring process

• 30-minute introductory call.
• 60-minute technical walkthrough and asynchronous task.
• 120-minute final interview with the team.