Senior Frontend Engineer - Fintech, React/TypeScript Lead

Ada Digital; Stockholms kommun; On-site; SEK 750,000 - 950,000; Full time

Job summary

Lendo in Stockholm is seeking a Senior Frontend Engineer to shape our web and mobile experiences with React and TypeScript. You will own parts of the customer-facing experience from idea to release, collaborating closely with Product and Design.

You will work in a Go-based backend environment, integrate via REST APIs, and contribute to frontend architecture and engineering best practices while mentoring teammates and driving improvements.

Qualifications

• Several years of professional experience building production-grade frontend applications.
• Strong hands-on experience with React and TypeScript.
• Experience building scalable frontend solutions and integrating them with backend services.
• Experience with modern development workflows and CI/CD.
• Experience with testing and quality-focused development.
• A good understanding of frontend architecture and technical best practices.
• A pragmatic approach to balancing technical quality, complexity, time and business value.
• Strong ownership and the ability to communicate risks, technical debt and challenges openly.

Responsibilities

• Build and evolve web and mobile experiences using modern frontend technologies.
• Take end-to-end ownership from idea and development to release and maintenance.
• Build scalable and reusable solutions using React and TypeScript.
• Contribute to frontend architecture, technical standards and engineering best practices.
• Work closely with Product and Design to balance user needs, technical quality and business value.
• Integrate frontend solutions with backend services through REST APIs and third-party integrations.
• Ensure quality through testing, code reviews, observability and continuous improvement.
• Contribute to technical discussions and architectural decisions within your team and across Lendo.
• Mentor colleagues and share knowledge across the engineering organization.
• Help identify technical debt and turn frontend improvements into clear priorities and business value.

Skills

React

TypeScript

Frontend architecture

CI/CD workflows

Testing

Ownership

Mentoring

Tools

GitHub Actions

Docker

Kubernetes

Playwright

Sentry

Git

Job description

Lendo in Stockholm is seeking a Senior Frontend Engineer to shape our web and mobile experiences with React and TypeScript. You will own parts of the customer-facing experience from idea to release, collaborating closely with Product and Design.

You will work in a Go-based backend environment, integrate via REST APIs, and contribute to frontend architecture and engineering best practices while mentoring teammates and driving improvements.