Connecting Odds
Inpost

Senior Frontend Engineer - Fintech Engineering (M/F/N)

Inpost
Warszawa/Kraków, , PolandPosted Discovered via the company's careers siteMatch locked
HybridFull-time5+ years exp

Company Description

InPost Pay is building its own fintech platform from the ground up. It's a large-scale, international initiative where engineers will have the opportunity to shape the architecture, build core fintech components, and create solutions designed to operate at InPost's scale. We're building a lean, highly effective engineering organization in Poland, with AI-native engineering at its core . We're looking for strong engineers who are comfortable with agentic engineering, from experienced professionals building complex systems and engineering tooling to a new generation of engineers who have embraced AI-driven development from the start of their careers. → Hybrid working model: preferably 1 day per week in the Warsaw or Cracow office .

Job Description

We're looking for a Senior Frontend Engineer to join our FinTech Platform team and help us build seamless payment experiences for consumers and merchants. In this role, you'll own consumer-facing and merchant-facing payment journeys, driving frontend architecture, performance engineering, and product quality. You'll work across modern web technologies, contributing to highly scalable and secure payment solutions.

What will you work on?

  • designing and implementing microfrontend architecture across payment products and services,
  • owning performance engineering and continuously improving Core Web Vitals across customer-facing applications,
  • participating in the full development lifecycle, from requirements and specification through testing and release,
  • building integrations with backend services using GraphQL and REST APIs,
  • implementing real-time user experiences using Server-Sent Events and similar technologies,
  • developing secure payment-related user interfaces aligned with industry requirements and best practices,
  • contributing to frontend tooling, developer experience, and modern engineering workflow.

Qualifications

This cooperation may be a strong match if you:

  • have at least 5 years of experience building modern frontend applications,
  • have hands-on experience with React, Vue, or Angular and TypeScript,
  • have experience designing and implementing microfrontend architectures,
  • have experience building and maintaining automated end-to-end tests using Playwright or similar frameworks,
  • understand frontend performance optimisation, Core Web Vitals, profiling, and bundle analysis,
  • have practical experience integrating REST and GraphQL APIs,
  • are familiar with OAuth2, OIDC, JWT, feature flags, and progressive delivery approaches,
  • actively use AI tools such as GitHub Copilot, ChatGPT, or Claude to improve development efficiency and quality,
  • communicate in English at B2 level or higher.

Additional advantages:

  • experience in payments, fintech, or e-commerce products,
  • knowledge of PCI DSS requirements, CSP configuration, and secure browser-based architectures,
  • experience with WCAG accessibility standards,
  • backend development experience in Node.js, Java, Python, or C#,
  • experience building embeddable widgets or SDKs.

Additional Information

What we offer:

  • the opportunity to build products that sit at the heart of InPost's growing financial services ecosystem,
  • ownership of business-critical solutions operating at scale,
  • a modern engineering environment focused on autonomy, accountability, and continuous learning,
  • collaboration with highly experienced product, engineering, and business teams,
  • access to cutting-edge technologies, event-driven architectures, and cloud-native solutions,
  • opportunities to shape technical standards, mentor others, and influence platform evolution,
  • full-time contract of employment.

Not included in the source posting: what you'll do, benefits.

Skills

artificial-intelligencenode-jsgraphqlrest-apiangularcjavajavascriptplaywrightpythonreacttypescript

Who can apply

The employer didn't state any visa, work authorization, citizenship or clearance requirements in this posting. Confirm with the employer before applying.

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