Build great products in the payment processing & value-added services space
Improve the user experience in the payment domain
Use AI tools as part of daily workflow for development, testing, code review, or product ideation

6 years of engineering experience
Strong JavaScript proficiency
Building apps with TypeScript, Next.js, Node.js & React
Understanding of GraphQL and its usage in large systems with multiple consumers
Experience with frontend testing tools and testing strategies
Experience with relational databases like PostgreSQL
Active use of AI tools (e.g. Claude, Cursor, Codex, ...) in your day-to-day engineering work
Working proficiency in English is required.
Experience with payment processing (Stripe, Adyen, Braintree) is a bonus.
Experience with search technologies like Elasticsearch is a bonus.
Experience with monitoring & observability tools like Grafana is a bonus.
Experience with responsive design & mobile web UX is a bonus.
Experience with UI/component frameworks like Tailwind is a bonus.
Experience evaluating or experimenting with AI coding workflows at team or company level is a bonus.

Opportunity to directly impact strategy to help more than 10 million people each month to find the animal of their dreams.
Flexible working hours
Work in the center of Stockholm, close to great restaurants, parks and shops.
Be part of an ambitious, high-performing team with people from diverse backgrounds.
Strong backing by some of Europe’s leading investors (e.g. Verdane and Otiva) who are early investors in leading companies such as Klarna, NA-KD, Apotea and Desenio.

Senior Fullstack Engineer – FE-focused

Key skills