Front-end Software Engineer

Swan

Swan

Software Engineering
Paris, France · Bordeaux, France
Posted on Jan 24, 2026

Front-end Software Engineer

Résumé du poste
CDI
Paris, Bordeaux
Télétravail fréquent
Salaire : Non spécifié
Compétences & expertises
Rédaction technique
Amélioration continue
Communication
Empathie
UX design
+15

Swan

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Le télétravail est autorisé pour ce poste.
Le contrat pour ce poste est de type CDI.

Le poste

Descriptif du poste

Your mission

As an Front-End Software Engineer, you’ll be an autonomous contributor within our focused front-end team—a center of excellence across our 70+ engineering organization. You’ll work hands-on building and refining the visual face of Swan’s platform across two critical surfaces:

  1. Swan’s Component Library: The ready-to-use front-end components that our partners integrate directly into their products—enabling them to build banking experiences without starting from scratch

  2. Swan’s Interfaces: The dashboards and tools that thousands of developers and millions of end-users interact with daily

This is a role for engineers ready to own features end-to-end, from design discussions through production deployment. You’ll collaborate closely with product designers, backend engineers, and product managers while growing your technical expertise in a demanding, high-impact environment. You’ll have the opportunity to shape how companies build financial experiences, contribute to our open-source component ecosystem, and grow toward senior engineering roles.

Your responsibilities

Feature Ownership & Delivery (35%)

  • Own features end-to-end across both the component library and internal interfaces, from technical design through production deployment and monitoring

  • Work autonomously on projects with limited uncertainty, delivering value on time

  • Reduce scope intelligently when needed to meet deadlines without compromising quality

  • Handle unexpected complications without derailing timelines—you’re resourceful and pragmatic

  • Deliver consistently, building trust with your team through reliable execution

Component Library Development & Maintenance (15%)

  • Build and maintain reusable components that are intuitive, flexible, and maintainable—your users are other developers

  • Ensure backward compatibility and handle breaking changes gracefully with clear migration paths

  • Write comprehensive documentation including usage examples, props API, accessibility guidelines, and integration guides

  • Provide developer support by triaging issues, reviewing partner implementations, and improving DX based on feedback

  • Optimize for bundle size and performance—partners integrate your components into their production apps

Technical Execution & Code Quality (25%)

  • Write production-grade React, TypeScript, and GraphQL code that’s clean, maintainable, and well-tested

  • Provide insightful code reviews and approve PRs independently, helping elevate the entire team

  • Write comprehensive tests (unit, integration, visual regression, accessibility) covering edge cases and critical user paths

  • Design reliable components considering failure modes, edge cases, and varied integration contexts

  • Implement security and performance best practices, ensuring interfaces are fast, accessible, and secure

  • Propose refactoring to reduce technical debt and improve maintainability across both codebases

Collaboration & Communication (10%)

  • Collaborate effectively across teams to solve complex problems spanning front-end, backend, and partner integrations

  • Explain technical concepts clearly to non-technical stakeholders (product, design, QA) and to partner developers

  • Gather feedback from partners using the component library and translate it into improvements

  • Provide timely, constructive feedback to peers in code reviews and design discussions

  • Participate in technical interviews, evaluating candidates and representing our engineering culture

Production Operations & Continuous Improvement (15%)

  • Monitor component usage and performance across partner implementations

  • Create meaningful dashboards and alerts for the services you own

  • Participate in on-call rotation, responding to incidents affecting both our product and partner integrations

  • Investigate production issues independently, including debugging issues in partner implementations

  • Handle deployments and rollbacks autonomously, coordinating breaking changes with affected partners


Profil recherché

Technical Excellence

  • You have 2-5 years of professional software development experience, with demonstrated growth and increasing autonomy

  • You’re highly skilled in React, TypeScript, and GraphQL—these are your daily tools, not aspirations

  • You write clean, tested, maintainable code and care deeply about code quality

  • You understand modern front-end architecture patterns (component composition, state management, data fetching strategies)

  • You have experience with testing strategies (unit tests with Jest/Vitest, component testing, e2e with Playwright/Cypress, visual regression)

  • You’re comfortable with Git workflows, CI/CD pipelines, and modern development tooling

  • You understand responsive design, accessibility (WCAG), and performance optimization

Component Library & Developer Experience (Highly Valued)

  • You’ve built or contributed to reusable component libraries or design systems

  • You understand component API design principles (composition, flexibility, sensible defaults)

  • You think about developer experience as a product: intuitive APIs, clear documentation, helpful error messages

  • You’re familiar with library tooling (bundlers, tree-shaking, CSS-in-JS, TypeScript type generation)

  • You understand versioning strategies and how to evolve public APIs without breaking consumers

  • You care about bundle size, tree-shaking, and performance in library contexts

  • You’ve written technical documentation for developers (not just end-users)

Architecture & System Design (Growing Skills)

  • You can design reliable components that work in varied integration contexts, considering failure modes and edge cases

  • You understand distributed systems fundamentals (async communication, event-driven patterns, error handling)

  • You’re learning about system design trade-offs (consistency vs. availability, performance vs. maintainability, flexibility vs. simplicity)

  • You understand common patterns like circuit breakers, retries with exponential backoff, and graceful degradation

  • You’re curious about how front-end connects to backend (APIs, GraphQL queries/mutations, real-time subscriptions)

Collaboration & Ownership

  • You take ownership of features from concept to production, thinking about user impact and business value

  • You balance product work with platform work—understanding when to build for Swan vs. when to build for partners

  • You communicate proactively about status, blockers, and technical decisions

  • You can explain technical concepts to different audiences: engineers, product managers, and partner developers

  • You’re comfortable working across the stack when needed (debugging backend issues, understanding database queries)

  • You can work with limited supervision and handle ambiguity without losing momentum

Passion for Craft

  • You have a strong UX/UI sensibility and care about the details that make interfaces delightful

  • You think about developer experience as a product itself (component APIs, documentation, ease of integration)

  • You stay current with front-end technologies and bring new ideas to the team

  • You’re passionate about building great products, whether through personal projects, open-source contributions, or professional work

  • You have professional-level English (Swan is an international team)

❤️ Our Ideal Teammate

  • Empathetic: You understand your team, users, and stakeholders

  • Skilled: You combine technical depth with growing leadership abilities

  • Frank: You communicate directly and value honest feedback

  • No ego: We love to challenge each other, and we leave our egos at the door

Bonus Points (Not Required)

  • Experience with design systems (Radix, Shadcn, Material-UI, Ant Design) or building component libraries from scratch

  • Familiarity with component library tooling (Storybook, Chromatic, Ladle)

  • Familiarity with bundler tooling (tsup, Rollup, Vite)

  • Experience with monorepo management (Turborepo, Nx, pnpm workspaces)

  • Understanding of CSS-in-JS solutions (Styled Components, Emotion, Vanilla Extract)

  • Contributions to open-source component libraries or design systems

  • Experience with automated testing strategies (visual regression testing, contract testing, accessibility testing)

  • Familiarity with fintech, embedded banking, or regulatory technology (PCI DSS, GDPR, strong customer authentication)

  • Understanding of system architecture beyond front-end (databases, message queues, distributed systems)

  • Experience working in product-driven environments with cross-functional teams (Product, QA, Security, Platform)

  • Experience supporting external developers (developer relations, technical writing, community management)


Déroulement des entretiens

  • A 30-min video call with our Talent Acquisition Manager, to get to know you, understand your career expectations and answer your questions

  • CTO Interview

  • System Design Interview

  • Peer Interview with Product/Product Design

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