Senior Front-End Engineer (with AI agents experience)

Location: European Union

Department: Delivery Unit (R. Voroniak)

N-iX is a global software development service company that helps businesses across the globe create next-generation software products. Founded in 2002, we unite 2,400+ tech-savvy professionals across 40+ countries, working on impactful projects for industry leaders and Fortune 500 companies. Our expertise spans cloud, data, AI/ML, embedded software, IoT, and more, driving digital transformation across finance, manufacturing, telecom, healthcare, and other industries. Join N-iX and become part of a team where your ideas make a real impact.

Our client is a fast-growing European fintech company in the business spend management space - corporate cards and related financial products - serving SME and mid-sized business customers across the EU and UK, in a regulated environment with GDPR compliance obligations. Engineering is organized into cross-functional squads, with platform/enabling teams providing shared tooling horizontally. The client already runs an AI-native engineering practice: Claude Code and GitHub Copilot are used daily, supported by a growing library of shared, versioned Skills embedded in key repositories, enabling an end-to-end flow from ticket to implementation, testing and PR in several codebases. AI tool/connector rollout follows an approved-list and pilot process. The client is AWS-first overall; for data platform and analytics workloads it also runs GCP, with BigQuery as the primary data warehouse. Day-to-day coordination is Slack-first, with Linear for ticket tracking, GitHub for code/PR review, and Notion as the knowledge base.

We're looking for a Senior Front-End Engineer who owns feature delivery end-to-end in React, TypeScript, and styled-components, comfortable collaborating directly with product and design stakeholders.

Key Responsibilities:

• Own feature delivery end-to-end in React, TypeScript, and styled-components.
• Apply AI-native delivery practices across implementation, testing, and code review.
• Maintain design systems, accessibility, and component tooling (e.g. Storybook).
• Collaborate directly with product and design stakeholders.
• Multiply the output and quality of the squad you join, and share patterns/practice beyond your immediate team so adoption compounds across the organization.
• Embed directly into a client squad as a hands-on Individual Contributor (not a coaching/managerial role).

Must-Have Skills:

• React, TypeScript, styled-components.
• AI-native delivery practices applied across implementation, testing and code review.
• Design-systems experience and accessibility (a11y).
• Component tooling, e.g. Storybook.
• Comfort collaborating directly with product and design stakeholders.
• AWS experience

Nice-to-Have Skills:

• HTML5/CSS3