About Kolsquare
Kolsquare is Europe's leading influencer marketing platform, a data‑driven solution that helps brands scale KOL marketing strategies and build authentic partnerships.
Our Mission
Kolsquare is a certified B‑Corp and a Benefit Company. Our purpose is to give everyone access to the power of Influencer Marketing, positively impacting the world.
Role: Senior Full Stack Developer
You will build and ship a B2C product for next‑generation content creators, working closely with development, design and product teams.
Your Responsibilities
- Full Stack Development: Build and maintain features end‑to‑end, from Rails API endpoints to React Native screens and components, ensuring a seamless experience across iOS and web.
- Architecture & Code Quality: Contribute to architecture decisions, advocate for simplicity and maintainability, and uphold high standards through code reviews, testing and clean abstractions.
- Platform Integrations: Work with social media APIs (Instagram, TikTok, Facebook), payment systems (Stripe) and third‑party services, handling OAuth flows, webhooks and data synchronization.
- Infrastructure & Deployment: Participate in the deployment pipeline (Kamal on GCP), background job processing, monitoring and observability, keeping the product stable and performant.
- Cross‑Functional Collaboration: Work closely with product and design to translate user needs into technical solutions and collaborate with the broader engineering team.
Your Profile
- At least 3 years of experience in Ruby / Rails, and relevant experience with React (preferably Native).
- Experience shaping technical direction in early‑stage projects and building a robust foundational architecture.
- Autonomous, organized and proactive with the ability to prioritize and manage multiple projects in a fast‑paced environment.
- Knowledge of AI tools to optimize output quality and quantity.
- Empathetic, with strong communication skills and the ability to collaborate across teams.
- Fluent in English.
Team Fit
- Passionate and determined to reach any goal.
- Curious and eager to learn, improve and take on more responsibility.
- Wants more than just a job; values the company's mission to positively impact the world.
Kolsquare Culture & Values
- Deliver WOW.
- Be Responsible in your actions.
- Pursue Growth & Learning.
- Be passionate and determined.
- Share your Power, Knowledge & Wealth.
- Build Authentic relationships.
What We Offer
- Remote work from anywhere in Europe.
- Full flexibility with European hubs and 400+ coworking spaces worldwide.
- Monthly and quarterly in‑person highlights and team‑building events.
- Competitive compensation package based on the market.
- Stability and resources of a profitable group with the agility of a scale‑up.
- Continuous training opportunities and career development support.
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