FULL STACK ENGINEER

Posted Yesterday
Be an Early Applicant
Stockholm, SWE
In-Office
Mid level
Artificial Intelligence • eCommerce • Machine Learning • Software
The Role
Design and build consumer-facing search, social, and transactional interfaces and the full stack beneath them. Own frontend performance, real-time features, API contracts, backend services, state management, and production-grade error handling to deliver polished user experiences from design to production.
Summary Generated by Built In

Who We Are

We are a well-funded, early-stage technology company on a mission to fundamentally redefine the way the world searches, discovers, and transacts, built on a philosophy that puts the user first at every step.

 

The user is not simply a means of transaction. They are a valued participant whose data works for them, not against them, enriching their world and their own experience within it, with them retaining full control.

 

Our mission is underpinned by proprietary, patent-pending technology built on a novel engine and system.

The Problem You Will Be Solving

The internet was built to inform the many, not to serve the individual. Platforms optimize for engagement, extraction, and consumption at global scale. AI has made this model even more efficient, with the user still largely remaining the input, not the full beneficiary.

 

The problem is not information. The world has never had more. The problem is that people give away a lifetime of data without receiving the personalized experience it should enable.

 

People should not have to search. They should simply find.

Who You Are

Highly talented and motivated to build products with people, for people

You thrive in zero-to-one environments and find genuine satisfaction in creating from scratch

A fast-paced thinker with a relentless desire to learn, improve, and raise the standard around you

Able to inspire, elevate, and collaborate; you make the people around you better

A great communicator; you express complex ideas with clarity, precision, and confidence across all levels of the organization

Able to transform ideas into working systems and technical milestones with light speed and precision

Highly ambitious and action-driven; you thrive under pressure and find genuine energy in working at the edge of what is considered possible

Capable of designing and building production-grade systems in a fourth of the time most experienced and “sane” professionals would consider possible

What You Will Do

Build high-performance consumer-facing search and discovery interfaces that serve as the primary surface for user interaction with the platform

Build real-time social and communication interfaces that handle live state, persistent connections, presence, and concurrent user interactions under variable network conditions

Build end-to-end transactional flows that guide users through complex multi-step sequences with clear state management, robust error handling, and seamless recovery

Treat frontend performance as a first-class engineering discipline, owning bundle architecture, rendering strategy, lazy loading, and Core Web Vitals as measurable engineering metrics

Build and own the full stack beneath the UI, including backend services, data access patterns, and API contracts between frontend and platform layers

Work directly from design specifications to deliver polished user experiences, systematically closing the gap between design intent and final shipped product while identifying and resolving edge cases

Minimum Qualifications

MSc in Computer Science or Software Engineering from KTH, Chalmers, or an institution of equivalent standing — or equivalent demonstrated production experience building consumer products at scale

Expert-level React and Next.js; architectural understanding of the framework including rendering strategies, state management trade-offs, and framework internals

Production proficiency in Go or Rust on the backend; writes systems code, not only UI code

Demonstrated track record shipping consumer products used by real people at meaningful scale

Demonstrated performance engineering on real consumer systems; you have measured, profiled, and improved load times and rendering with evidence, not estimates

Preferred Qualifications

Background from Lovable, Google, Epidemic Sound, Spotify or comparable consumer product companies

Demonstrated performance engineering work on real production systems with measurable outcomes

Ability to take a product from design to production at a pace that resets expectations for the team

3–7 years of relevant experience

What We Offer

Expect the most talented, rigorous, and driven colleagues you have worked with; people who lift each other up and hold each other to the highest standard. This company is driven by ideas and innovation, regardless of age, position, or background. The best ideas must win and the people behind them recognized and rewarded.

 

A home for exceptional people and geniuses within their domain; those who have always known what they are capable of and have been waiting for the environment to prove it to the world, whilst first being seen and supported by their coworkers.

 

Compensation includes an attractive salary and meaningful equity ownership for an early-stage startup.

Equal Opportunity

We are an equal opportunity employer committed to building an inclusive, high-performance culture where everyone can do their best work and reach their full potential. We welcome applicants of all backgrounds and do not discriminate on the basis of race, color, religion, national origin, gender, gender identity or expression, sexual orientation, age, disability, or any other characteristic protected by applicable law.

Application

To apply, send your CV/resume with direct references, GitHub profile, LinkedIn profile, and a brief note on how and why you would like to contribute to our mission. Upon initial acceptance, an in-person interview will follow shortly in Stockholm, Sweden.

 

Please note that all applications and interviews are conducted in English. Fluency in written and spoken English is a requirement for all roles.

 

All applications are treated with strict confidentiality.

Skills Required

  • MSc in Computer Science or Software Engineering from KTH, Chalmers, or equivalent demonstrated production experience
  • Expert-level React and Next.js (architectural understanding, rendering strategies, state management)
  • Production proficiency in Go or Rust (systems/backend development)
  • Demonstrated track record shipping consumer products used by real people at meaningful scale
  • Demonstrated performance engineering on real consumer systems with measured profiling and improvements
  • Fluency in written and spoken English
  • Ability to design and build production-grade systems rapidly and reliably from design to production
  • Background from Lovable, Google, Epidemic Sound, Spotify or comparable consumer product companies
  • 3-7 years of relevant experience
  • Ability to take a product from design to production at a pace that resets team expectations
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
Year Founded: 2026

What We Do

Q Innovations is a Stockholm-based, well-funded early-stage technology company developing proprietary, patent-pending technology to redefine how people search, discover, and transact. Its user-first approach treats people as active participants, allowing their data to work for them while retaining control. The company is building AI-driven personalization and a novel engine and system to improve digital discovery and transaction experiences.

Similar Jobs

Evolution Logo Evolution

Senior Full-stack Engineer

Gaming • Information Technology
In-Office
Stockholm, SWE
5220 Employees

Evolution Logo Evolution

Senior Full-stack Engineer

Gaming • Information Technology
In-Office
Stockholm, SWE
5220 Employees

Nextory Logo Nextory

Full-stack Engineer

Digital Media • Mobile • News + Entertainment
In-Office
Stockholm, SWE
134 Employees

Cohere AI Logo Cohere AI

Senior Full-stack Engineer

Artificial Intelligence • Machine Learning • Natural Language Processing • Software • Generative AI
In-Office or Remote
33 Locations
224 Employees
180K-310K Annually

Similar Companies Hiring

Golden Pet Brands Thumbnail
Digital Media • eCommerce • Information Technology • Marketing Tech • Pet • Retail • Social Media
El Segundo, California
178 Employees
Kepler  Thumbnail
Fintech • Software
New York, New York
6 Employees
Onshore Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
60 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account