Junior Software Engineer at Sellpy

Sellpy; Stockholms kommun; Hybrid; SEK 340,135 - 485,908; Full time

Benefits offered by this job

Unlimited access to a learning platform

Prepaid vacation

Staff discounts at Sellpy and H&M brands

Monthly pension plan

Engagement in social traditions like game nights

Job summary

Sellpy is seeking a Junior Software Engineer to join their team in Sweden, where collaboration and innovation shape the future of sustainable technology. You'll be involved in building features across the full stack with a strong emphasis on JavaScript and modern frameworks like React and Node.js.

The ideal candidate is currently studying or has recently graduated in Computer Science and is passionate about coding with a commitment to sustainability. Enjoy a vibrant office culture amidst a holistic approach to work-life balance.

Qualifications

• Currently pursuing or recently completed a B.S. or M.S. in Computer Science or a related technical field.
• Graduating in summer 2026 or 2027.
• Solid understanding of JavaScript or another modern programming language.
• Genuine curiosity, drive to learn, and an action-oriented attitude.

Responsibilities

• Build and ship features across the full stack.
• Work with JavaScript, React/React Native and Node.js.
• Take end-to-end ownership of features.
• Contribute to keeping Sellpy's architecture clean.
• Bring fresh perspectives to engineering culture.

Skills

JavaScript

React

Node.js

Curiosity and drive to learn

Education

B.S. or M.S. in Computer Science or related field

Tools

Git

Job description

We love elegant code, and we hope you do too. We look forward to seeing your craft grow and make a difference to our rapidly expanding platform.

Sellpy's vision is to empower everyone to live circularly. We believe that every item deserves a second life, and we see huge value in making sure this happens. We look for those who share this vision and have the grit to tackle the challenges of building a circular future.

Junior Software Engineer at Sellpy

Sellpy's catalogue holds 10 million one‑of‑a‑kind items — and our systems must handle every single one in real‑time. As a Junior Software Engineer, you'll step into a place where your code ships to production early, your ideas are heard from day one, and the problems you solve have genuine environmental impact.

We're coding for a circular future in an environment where discussions are encouraged, every voice contributes to our architecture, and curiosity and craft are valued equally — from day one.

In short, you will

• Build and ship features across the full stack, from frontend interfaces to backend services.

• Work with JavaScript, React/React Native and Node.js.

• Take end‑to‑end ownership of features — from design through deployment.

• Grow rapidly with the support of experienced teammates and direct feedback loops.

• Contribute to keeping Sellpy's architecture clean, maintainable and scalable.

• Bring fresh perspectives that push our engineering culture forward.

Requirements

• Currently pursuing or recently completed a B.S. or M.S. in Computer Science or a related technical field.

• Graduating in summer 2026, or 2027.

• Solid understanding of JavaScript or another modern programming language.

• Genuine curiosity, drive to learn, and an action‑oriented attitude.

We’d be impressed if you have

• Familiarity with React, Node.js, or similar modern frameworks.

• Experience from side projects, internships, or open source contributions.

• Exposure to CI/CD pipelines and version control with Git.

• A passion for the circular economy or sustainable tech.

You get to

• Be part of a tech‑minded company driving the change toward a sustainable lifestyle. In return, you'll get direction, energy, and meaningful challenges from day one.

• Enjoy a vibrant office culture at Medborgarplatsen, balanced with hands‑on experience at our production sites.

• Work with highly skilled and motivated colleagues who invest in your growth.

• Gain new skills with unlimited access to a learning platform.

• Make use of prepaid vacation.

• Enjoy Sellpy credits and staff discounts at Sellpy and the H&M brands (Arket, COS, Other Stories, Weekday and more).

• Save up with a monthly pension plan.

• Engage in Sellpy’s social traditions with game nights, interactive planning days, guest speakers and other activities.

Location

On‑site collaboration at our core, supported by a flexible hybrid setup on set days. This role is based at our Medborgarplatsen office.

Hybrid work

We value being together. After an on‑site onboarding, we aim for a balanced office presence, with flexibility on set days.

Form of employment: Full‑time

Start: As agreed upon