Senior Full Stack AI Developer (Python/React)
Senior full-stack engineer at Filed, an AI tax preparation platform for US accounting firms: building agentic workflows, evaluation/verification systems, and LLM integrations across TypeScript/React frontends and Python backends on Google Cloud/Azure. Office-based in Sweden with evening support of US customers.
- Compensation
- SEK 82.5K–SEK 97.5K / mo
- Location
- Stockholms län, Sweden
- Work setup
- Not specified
- Seniority
- Senior
- Employment
- Not specified
- Experience
- Not specified
- Category
- Fullstack
- Posted
Skills
Must have
- Comfortable in TypeScript, React, and Python; has built complex, data-heavy UIs and backend services
- Familiar with cloud infrastructure on Google Cloud and/or Azure
- Comfortable being uncomfortable and making calls with incomplete data
- Empathetic and curious: building for the user, not just for clean code
- Highly collaborative across product, engineering, and tax
- Detail-oriented but pragmatic: knows when polish matters and when to ship
- Owns their work and welcomes accountability
Nice to have
- Has worked in fast-paced startups or regulated industries
- Has taken a product from 0 to 1 and watched real users depend on it
Full description
A Different Kind Of Job Description
At Filed, we believe in radical transparency. Everything is open: company finances, team salaries, stock options, anonymous team feedback. That extends to how we talk about this job, so what you'll read here looks a little different from other job ads. It starts with why this is a terrible job. Then it explains why it might be the best career move you'll ever make.
A Different Kind Of Job Description
At Filed, we believe in radical transparency. Everything is open: company finances, team salaries, stock options, anonymous team feedback. That extends to how we talk about this job, so what you'll read here looks a little different from other job ads. It starts with why this is a terrible job. Then it explains why it might be the best career move you'll ever make.
Why this is a terrible job
This is an incredibly high-paced, high-tempo environment. We're making a generational bet to change all of our lives, and generational bets are not comfortable.
You will build agents for subjective workflows. Tax law is objective, but what applies under it and how professionals interpret it is full of judgment. You can give two tax professionals the same task and get two different results where both are right. We're building agentic systems that have to reach their level of accuracy, not a level we decided is good enough. From an engineering standpoint, this is the hardest thing most of us have ever built. At times it will feel like hitting your head against the wall.
Customers will sometimes get frustrated, because they expect deterministic results from probabilistic systems, and we're managing the expectations of some of the biggest firms in the world, including the Big Four.
And the rhythm is real: we get to the office, we work, we go home and spend time with our families, and then many of us get back online to support our customers in US hours. It's tough. It's relentless.
Why it might be the best career choice you'll ever make
It's addictive to be part of a business when you know you're winning. Filed is adding millions of dollars of revenue every quarter, customers are signing up in numbers, and in under two years we've become the market leader in a space with entrenched incumbents and a drastic need for new AI tools. When we come into head-to-heads with competitors, we win every time, because our product is superior. And we stay focused and diligent: we only work with tax firms that have the right expectations, which is why our typical customer is mid-market and enterprise.
The industry looks boring from the outside, but the problem is unsolved, and the space has been riddled with products below the mark for decades. When you push through the wall, there's a spark of joy: a customer says "wow, this is phenomenal." That keeps happening.