Fullstack AI Engineer

Filed; Stockholms kommun; On-site; SEK 646,690 - 862,254; Full time

Benefits offered by this job

Equity in the company

Above market salary

Transparency in pay and performance reviews

Job summary

Filed is seeking a Fullstack AI Engineer in Stockholm to join their rapidly growing team. In this role, you'll develop features for AI-driven tax preparation, collaborating closely with users, AI, and product teams. Applicants should be comfortable with TypeScript, React, and Python, while thriving in fast-paced environments.

You will own features from concept to execution, leveraging data to enhance user experience and ensure product effectiveness. The position offers a unique opportunity to impact the future of tax technology.

Qualifications

• Experience building complex, data-heavy user interfaces and backend services.
• Familiarity with Google Cloud and/or Azure infrastructure.
• Experience in fast-paced startup environments or regulated industries is a plus.

Responsibilities

• Building and maintaining fullstack features for AI tax prep products.
• Owning user experience and backend logic for daily workflows.
• Shipping quickly, analyzing metrics, and determining next steps independently.

Skills

TypeScript

React

Python

Cloud Infrastructure

Data-heavy UIs

Job description

Filed is building the first AI tax preparer trusted by America's accounting firms.

This industry might seem boring-but it's a $70B backbone of the economy that's breaking under a talent shortage no one has solved. We're fixing it-fast.

In just 9 months, we've hit strong product-market fit, are generating insanely fast-growing, ridiculously sticky revenue, and are backed by top-tier investors. We're not a tool-we're the missing workforce firms have been sounding the alarm for. We're building the future by expanding our already 30-person team with those who want to say "I was there when it all started."

Read more TechCrunch

What we should tell you about the role:

We're looking for a Fullstack AI Engineer who moves fast and thrives in high-velocity environments. You're the kind of person who sees a product gap, understands the root cause quickly, and ships a working feature in hours or days, not weeks. You love turning complex workflows into clean, intuitive interfaces, and you don't wait for a perfect spec to get started.

You're a builder who's just as comfortable designing React UIs and TypeScript APIs as you are wiring up Python backends or deploying to Google Cloud or Azure. You sweat the details, but never let them block momentum.

At Filed, engineering means more than owning the code. You own the outcome. You ship a feature, watch how CPAs use it, look at the metrics, and decide what the next version should be. Just you and your team, the data, and the user.

As one of our core engineering hires, you'll help shape how tax professionals experience AI-assisted work end to end. You'll work closely with the AI, tax, and product teams - and most importantly, our users - to rethink what great AI native software can feel like.

Here’s why this is a terrible job:

• This is not a job for someone who likes to move slow.
• We operate week to week with ruthless speed. Sometimes you're going in the wrong direction, but more times than not you're going in the right direction.
• If you need a few extra days to polish a component, chances are there's already a handful of team members blocked behind you.
• You’ll look at the usage data and figure out what to build next yourself.
• There are no clear answers. Just judgment calls, ambiguity, and constant input from every direction.
• You’ll ask yourself, is this really the work? It is. And it’s not for everyone.

Here’s why it's the best career choice you’ll make:

• We're building what tax pros call impossible. A product that behaves like a teammate, not just another tool.
• We run reviews every 4 months. We operate with total transparency around pay, performance, and progress.
• You’ll be paid above market. You'll earn equity that grows fast. And you'll have full autonomy to make high-impact decisions.
• You’ll ship features because you believe in them, not because they got signed off.
• You’ll talk to customer facing teams and will be exposed to customer feedback weekly. You'll drive outcomes end to end.
• We'll tell you what needs to be achieved. How you get there is on you.

The teammate we're looking for:

• Thrives at solving hard product problems, not just technical ones
• Moves seamlessly between identifying problems, implementing solutions, and iterating quickly
• Excited by ownership - you want to be the person accountable for how a feature performs
• No lone wolves - we need a collaborative builder
• Big bonus if you've shipped product at a fast-moving startup before

What you'll be responsible for:

• Building and maintaining fullstack features across our AI tax prep, planning, and review products
• Owning the UX and backend logic for the workflows tax professionals use every day
• Shipping fast, watching metrics, and deciding what to improve next - without being told
• You want to learn about LLMs and how to make them work for our customers to achieve higher accuracy and transparency
• Keeping the codebase clean, typed, and fast as we scale

Your hard skillset:

• Comfortable in TypeScript, React, and Python - you've built complex, data-heavy UIs and backend services before
• Familiar with cloud infrastructure on Google Cloud and/or Azure
• Bonus if you've worked in fast-paced startups or regulated industries
• Even bigger bonus if you've taken a product from 0 to 1 and watched real users depend on it

Your soft skillset:

• 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 - you know when polish matters and when to ship
• You own your work and welcome the accountability that comes with it

Growth and Levels:

1. We operate on six levels, from Level 1 to Level 6. Each reflects increasing ownership, impact, and scope with meaningful jumps in salary and equity.
2. We review levels every 4 months. Promotions are based on output and ownership, not tenure.
3. This isn't a comfortable CRUD role. It's fast, focused, and customer-obsessed.
4. You will launch fast. You will learn fast. You will own what you ship.

The process:

• Quick intro call (30 minutes)
• Technical walkthrough and async task (60 minutes)
• Final round with our team (120 minutes)

In just 3.5 hours, you'll be wanting early access - just like the rest of our team - to get into the stack and start building a generational company, even before your first day. Because you'll see the opportunity to change your career trajectory - fast.

Department Engineering Locations Stockholm Employment type Full-time Positions 1