About the Role :
Join our growing engineering team as a Senior Frontend Developer where you'll drive technical excellence across our web and mobile platforms. This hands-on technical leadership role is perfect for developers who excel at solving complex UI challenges and mentoring teams, without the overhead of formal people management.
You'll own end-to-end delivery of user-facing features, from design collaboration to production deployment. As our frontend technical leader, you'll shape component architecture, establish best practices, and ensure exceptional user experiences across all platforms.
Barter – Redefine how brands grow
Barter is transforming the influencer and creator economy from our bases in the Netherlands and Portugal. We’re the platform where brands and creators connect for authentic, cashless collaborations—think product-for-content, not pay-per-post. With over 10,000 vetted creators and micro-influencers across Europe, Barter makes launching campaigns and generating high-quality UGC effortless, scalable, and cost-effective—no agencies or long-term contracts required.
Today, Barter is the go-to marketplace for brands seeking fresh, real content and for creators eager for genuine partnerships. But we’re just getting started. Our next chapter is all about growth : expanding our creator community, rolling out smarter campaign tools, and launching new features like in-app performance tracking.
With current successes in the Netherlands, Belgium, Luxembourg, Germany, France, and the UK, our international expansion will bring our content revolution to new markets in Europe as well as North and South America.
If you want to help shape the future of influencer marketing and build a platform that puts creativity and authenticity first, Barter is where you belong.
Key Responsibilities :
Technical Leadership & Delivery
- Lead design and implementation of complex features across Angular web and React Native mobile applications
- Architect and maintain scalable design systems and component libraries with focus on consistency and accessibility
- Drive frontend architecture decisions, tooling selection, and development workflow optimization
- Partner with Product, Design, and Backend teams to define requirements and technical specifications
Code Quality & Mentorship
Conduct thorough code reviews that elevate team standards and knowledge sharingMentor developers through pair programming, technical guidance, and career developmentEstablish and document frontend best practices, coding standards, and architectural patternsChampion performance optimization, accessibility compliance (WCAG), and cross-platform compatibilityInnovation & Continuous Improvement
Proactively identify and address technical debt to enhance maintainabilityResearch and implement cutting-edge tools and methodologies to improve developer experienceStrengthen CI / CD pipelines and expand automated testing coverageRequirements : Essential Skills
React Native expertise : Building cross-platform mobile apps, deep understanding of React Native APIs, native module integration, debugging and optimizing for iOS and Android, experience with navigation libraries and app store deploymentExpert CSS proficiency : Modern CSS features, CSS-in-JS, Pre-Processors (Sass / Less), Responsive Design Patterns, Fluid Responsive, CSS Grid, Flexbox, Properties, etc.Component system mastery : Building, documenting, and scaling design systems across platformsPerformance optimization : Bundle analysis, lazy loading strategies, memory management, profiling toolsPreferred Qualifications
Experience with Storybook or similar component documentation toolsDeep understanding of accessibility standards (WCAG) and testing methodologiesBackground in UX / UI principles with design tool expertise (Figma, Sketch)What You'll Achieve :
First 3 Months
Audit and establish a scalable design system foundation that supports rapid product developmentIdentify and resolve critical frontend pain points affecting team velocity and user experienceShip your first major feature while mastering our codebase and development processesBuild strong relationships with Product and Design stakeholdersContribute meaningful improvements through code reviews and technical discussionsFirst Year
Become the architectural authority for frontend decisions and component system evolutionSuccessfully lead 2+ major product initiatives from conception to launchDevelop team members through structured mentorship and knowledge sharingDrive measurable improvements in performance metrics, code quality, and developer productivityWhy This Role Stands Out :
High-Growth Environment : Join Barter at the forefront of the creator economy as we scale across 6+ European countries.
Technical Autonomy : Shape architectural decisions, choose modern technologies, and drive implementation strategies with minimal bureaucracy.
Direct Impact : Your work influences the experience of thousands of businesses and creators daily.
Career Acceleration : Clear path to Staff, Principal, or Leadership roles in a fast-scaling organization.
Benefits & Perks :
Compensation & Equity
Competitive experience-aligned salary with rapid growth potentialMeaningful early-stage equity with significant upsideWork Environment
Fully remote : Work from anywhere with flexible, async-friendly schedulingModern tech stack : Freedom to work with cutting-edge technologiesZero bureaucracy : Direct collaboration with founders and leadershipGrowth & Development
Generous learning budget for courses, tools, and conferencesHigh ownership over technical decisions and product directionFor any questions you can reach out to our partner in recruitment, Olivier Verwerda on olivier@crestrecruitment.nl or +31640605978.
acquisition is not appreciated