Senior Software Engineer - Front End - Swan.Io H/F Swan.io

Our mission

Banking belongs in business software

Many software companies already serve small businesses incredibly well: helping them send invoices, run payroll, manage inventory, and more. They're on a mission to become the central hub for managing every aspect of business life.

But when it comes to financial workflows, there's still a gap. Too many critical tasks like managing cash flow, tracking payments, or reconciling accounts happen outside the software, across spreadsheets, email threads, banking portals.

It's a missed opportunity. Business software shouldn't just record financial activity - it should run it.

To learn more about us: ; .

Job description

✨ Summary At Swan, we empower companies to embed banking features into their products via a modern API and prebuilt front-end components. In this role, you will be a key contributor to our Front-End team, responsible for building and maintaining these crucial user interfaces. You will join a team focused on delivering intuitive and performant web applications and components, leveraging cutting-edge technologies.

✨ Your mission Join our Front-End team as a Senior Software Engineer where you'll take technical ownership of major features and components that thousands of developers integrate into their products. You'll design and build interfaces for Swan's dashboard, onboarding flows, web banking, and strong customer authentication-all while working with modern technologies and collaborating closely with product, design, and backend teams.

✨ Main Tasks

Build beautiful, performant, and accessible user interfaces that make embedded banking simple and delightful for developers and end-users.

Technical Ownership & Architecture (40%)

• Take technical ownership of complex front-end projects from design to production

• Lead architecture decisions for your features ensuring scalability, performance, and maintainability

• Design component APIs that are intuitive and reusable across Swan's platform

• Make technical trade-offs balancing perfect solutions with pragmatic delivery

• Ensure operational excellence: Build in observability, error handling, and resilience

• Guide technical direction during planning and design reviews

Development & Code Quality (40%)

• Ship high-quality features across dashboard, onboarding forms, web banking, and authentication flows

• Write clean, maintainable code following TypeScript and React best practices

• Implement comprehensive testing: Unit, integration, and e2e tests with meaningful coverage

• Optimize performance: Core Web Vitals, bundle size, rendering efficiency, GraphQL query optimization

• Conduct code reviews: Provide thoughtful, teaching-oriented feedback to team members

• Reduce technical debt: Identify and systematically improve code quality

Collaboration & Leadership (20%)

• Partner with Product & Design: Transform complex requirements into elegant user experiences

• Collaborate with backend teams: Shape GraphQL API contracts, understand data models

• Mentor engineers: Help L1/L2 engineers grow through pairing, reviews, and guidance

• Influence team practices: Propose improvements to workflows, tooling, and standards

• Lead design reviews: Guide architectural discussions and challenge assumptions constructively

• Share knowledge: Document decisions, present at team meetings, contribute to team learning

Your Tech Stack

Core Technologies (you'll use daily):

• React 18+ with hooks, context, and modern patterns

• TypeScript with strict mode and advanced types

• Storybook for component development and documentation

Tools & Practices:

• Testing: Vitest, React Testing Library, Playwright for e2e

• CI/CD: GitHub Actions, automated deployments, feature flags

• Observability: Grafana Cloud for performance, APM and errors

• Design: Figma integration, design tokens, responsive/adaptive design

• Collaboration: Linear for project management, Slack, async-first communication
  
  

Preferred experience

✨ You're a great match if:

• You have 5+ years of experience as a Software Developer, with a strong focus on front-end engineering in product-driven environments, and solid skills in React, TypeScript, and GraphQL.

• You bring a strong UX/UI sensibility, write clean and maintainable code, and stay up to date with the latest front-end technologies.

• You're passionate about building great products-whether through open-source contributions, personal projects, or professional work in fintech, BaaS, or regulatory tech.

• You're proactive, curious, and able to manage and prioritize your workload independently.

• You have a professional level of English (Swan is an international team).

• Our ideal teammate: Empathetic. Skilled. Frank. We love to challenge each other, and we leave our egos at the door.

Bonus Points(Nice to Have, Not Required):

• Background in fintech, BaaS, or regulatory tech

• Open-source contributions or technical writing

• Experience building native applications with React Native (iOS/Android)

• Interest in design systems and component library architecture

• Experience with internationalization (i18n) and localization

• Knowledge of Web Accessibility (WCAG) and assistive technologies

It's okay if you don't tick all the boxes - don't let imposter syndrome prevent you from applying! 🙌

Swan is committed to providing a caring work environment for all employees, regardless of age, sex, disability, sexual orientation, race, religion, or belief.

When it comes to recruitment, we're interested in your work experience, skills, and overall personality. Because diversity makes the workplace stronger and is necessary for Swan's success, we are intensifying efforts to incorporate concrete actions to help us improve in this area.

About Swan

✨ Perks of being a Swanee:

• Meal Vouchers: We provide a meal voucher card to cover your meals on work days. 🥗

• Transport:Monthly mobility package for remote employees. In accordance with the company agreement for sustainable mobilities, you can now use your mobility package to pay for alternative commuting modes. 🚇

• Holidays : 25 days + RTT 🏝️.

• Health insurance: . This is Swan's health and welfare insurance. 🚑

• Sports: Thanks to our partnership with and , you can enjoy advantageous discounts on subscriptions. They offer a wide range of sports activities as well as wellness activities. The offers are valid in several European cities, as well as online. 🏋

• Well-being support: access to for mental health and wellness. 🧘

• Hybrid Remote:Our hybrid remote policy offers the best of both worlds: a great office setting and the flexibility to work remotely with at least 3 days each month in our Parisian office. 🏡

• Offsite: Once a year we gather to reconnect, deep-dive into big topics, and relax. 🤝

• This isn't a perk, it should be the rule, but diversity and inclusion are important at Swan. We're working hard to get better every day.

✨ Our values:

Swan's core values guide our actions daily. Individually, they may seem obvious, but together, they form a unique culture.

Simplicity: Leonardo Da Vinci said: simplicity is the ultimate sophistication. If something's convoluted or confusing, we work extra hard to break it down. - Making complex things simple is what we do.

Long Term: We always play the long game, whether it's to support our partners in their growth journey, or make tangible commitments to climate action.

Excellence: We are a team of experts who consistently go all out to create pixel-perfect banking services and exceed our partners' expectations- whatever it takes.

Be Human:We believe in the power of kindness and the importance of acting with integrity. But embracing our humanity extends beyond interpersonal interactions, it means caring about greater issues that affect our planet.

You can find out more about our .

Salary Transparency Statement
In compliance with the EU Pay Transparency Directive (effective as of 2026), Swan is committed to fair and transparent compensation.

Salary Range: This position is classified as Level 3 in our Software Engineer grid. The salary range reflects our internal compensation structure and is based on market benchmarks for similar roles across Europe. For this position we offer a salary between 63.000 and 75.000 Euros gross per year.

Recruitment process

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

• Technical Interview

• Peer Interview

• Last Round with our CTO

Swan is Europe's embedded banking specialist. We empower software companies to embed banking features like accounts, cards, and payments directly into their products, under their own brand.Swan processes over €1.5 billion in monthly transactions for more than 150 companies-like Pennylane, Indy, Agicap, Libeo, and Lucca. Founded in 2019, the company has received growth capital from leading investors such as Lakestar, Accel, Creandum, Bpifrance and Eight Roads. Swan is a principal member of Mastercard and a licensed financial institution, regulated by the French banking authority (ACPR).

Our mission

Banking belongs in business software

Many software companies already serve small businesses incredibly well: helping them send invoices, run payroll, manage inventory, and more. They're on a mission to become the central hub for managing every aspect of business life.

But when it comes to financial workflows, there's still a gap. Too many critical tasks like managing cash flow, tracking payments, or reconciling accounts happen outside the software, across spreadsheets, email threads, banking portals.

It's a missed opportunity. Business software shouldn't just record financial activity - it should run it.

To learn more about us: ; .

✨ Summary At Swan, we empower companies to embed banking features into their products via a modern API and prebuilt front-end components. In this role, you will be a key contributor to our Front-End team, responsible for building and maintaining these crucial user interfaces. You will join a team focused on delivering intuitive and performant web applications and components, leveraging cutting-edge technologies.

✨ Your mission Join our Front-End team as a Senior Software Engineer where you'll take technical ownership of major features and components that thousands of developers integrate into their products. You'll design and build interfaces for Swan's dashboard, onboarding flows, web banking, and strong customer authentication-all while working with modern technologies and collaborating closely with product, design, and backend teams.

✨ Main Tasks

Build beautiful, performant, and accessible user interfaces that make embedded banking simple and delightful for developers and end-users.

Technical Ownership & Architecture (40%)

• Take technical ownership of complex front-end projects from design to production

• Lead architecture decisions for your features ensuring scalability, performance, and maintainability

• Design component APIs that are intuitive and reusable across Swan's platform

• Make technical trade-offs balancing perfect solutions with pragmatic delivery

• Ensure operational excellence: Build in observability, error handling, and resilience

• Guide technical direction during planning and design reviews

Development & Code Quality (40%)

• Ship high-quality features across dashboard, onboarding forms, web banking, and authentication flows

• Write clean, maintainable code following TypeScript and React best practices

• Implement comprehensive testing: Unit, integration, and e2e tests with meaningful coverage

• Optimize performance: Core Web Vitals, bundle size, rendering efficiency, GraphQL query optimization

• Conduct code reviews: Provide thoughtful, teaching-oriented feedback to team members

• Reduce technical debt: Identify and systematically improve code quality

Collaboration & Leadership (20%)

• Partner with Product & Design: Transform complex requirements into elegant user experiences

• Collaborate with backend teams: Shape GraphQL API contracts, understand data models

• Mentor engineers: Help L1/L2 engineers grow through pairing, reviews, and guidance

• Influence team practices: Propose improvements to workflows, tooling, and standards

• Lead design reviews: Guide architectural discussions and challenge assumptions constructively

• Share knowledge: Document decisions, present at team meetings, contribute to team learning

Core Technologies (you'll use daily):

• React 18+ with hooks, context, and modern patterns

• TypeScript with strict mode and advanced types

• Storybook for component development and documentation

Tools & Practices:

• Testing: Vitest, React Testing Library, Playwright for e2e

• CI/CD: GitHub Actions, automated deployments, feature flags

• Observability: Grafana Cloud for performance, APM and errors

• Design: Figma integration, design tokens, responsive/adaptive design

• Collaboration: Linear for project management, Slack, async-first communication
  
  

✨ You're a great match if:

• You have 5+ years of experience as a Software Developer, with a strong focus on front-end engineering in product-driven environments, and solid skills in React, TypeScript, and GraphQL.

• You bring a strong UX/UI sensibility, write clean and maintainable code, and stay up to date with the latest front-end technologies.

• You're passionate about building great products-whether through open-source contributions, personal projects, or professional work in fintech, BaaS, or regulatory tech.

• You're proactive, curious, and able to manage and prioritize your workload independently.

• You have a professional level of English (Swan is an international team).

• Our ideal teammate: Empathetic. Skilled. Frank. We love to challenge each other, and we leave our egos at the door.

Bonus Points(Nice to Have, Not Required):

• Background in fintech, BaaS, or regulatory tech

• Open-source contributions or technical writing

• Experience building native applications with React Native (iOS/Android)

• Interest in design systems and component library architecture

• Experience with internationalization (i18n) and localization

• Knowledge of Web Accessibility (WCAG) and assistive technologies

It's okay if you don't tick all the boxes - don't let imposter syndrome prevent you from applying! 🙌

Swan is committed to providing a caring work environment for all employees, regardless of age, sex, disability, sexual orientation, race, religion, or belief.

When it comes to recruitment, we're interested in your work experience, skills, and overall personality. Because diversity makes the workplace stronger and is necessary for Swan's success, we are intensifying efforts to incorporate concrete actions to help us improve in this area.

✨ Perks of being a Swanee:

• Meal Vouchers: We provide a meal voucher card to cover your meals on work days. 🥗

• Transport:Monthly mobility package for remote employees. In accordance with the company agreement for sustainable mobilities, you can now use your mobility package to pay for alternative commuting modes. 🚇

• Holidays : 25 days + RTT 🏝️.

• Health insurance: . This is Swan's health and welfare insurance. 🚑

• Sports: Thanks to our partnership with and , you can enjoy advantageous discounts on subscriptions. They offer a wide range of sports activities as well as wellness activities. The offers are valid in several European cities, as well as online. 🏋

• Well-being support: access to for mental health and wellness. 🧘

• Hybrid Remote:Our hybrid remote policy offers the best of both worlds: a great office setting and the flexibility to work remotely with at least 3 days each month in our Parisian office. 🏡

• Offsite: Once a year we gather to reconnect, deep-dive into big topics, and relax. 🤝

• This isn't a perk, it should be the rule, but diversity and inclusion are important at Swan. We're working hard to get better every day.

✨ Our values:

Swan's core values guide our actions daily. Individually, they may seem obvious, but together, they form a unique culture.

Simplicity: Leonardo Da Vinci said: simplicity is the ultimate sophistication. If something's convoluted or confusing, we work extra hard to break it down. - Making complex things simple is what we do.

Long Term: We always play the long game, whether it's to support our partners in their growth journey, or make tangible commitments to climate action.

Excellence: We are a team of experts who consistently go all out to create pixel-perfect banking services and exceed our partners' expectations- whatever it takes.

Be Human:We believe in the power of kindness and the importance of acting with integrity. But embracing our humanity extends beyond interpersonal interactions, it means caring about greater issues that affect our planet.

You can find out more about our .

Salary Transparency Statement
In compliance with the EU Pay Transparency Directive (effective as of 2026), Swan is committed to fair and transparent compensation.

Salary Range: This position is classified as Level 3 in our Software Engineer grid. The salary range reflects our internal compensation structure and is based on market benchmarks for similar roles across Europe. For this position we offer a salary between 63.000 and 75.000 Euros gross per year.

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

• Technical Interview

• Peer Interview

• Last Round with our CTO