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Senior Full Stack Engineer

Porto💼 Full-time🗓 2026-06-30 → 2026-09-26

Core

Design, develop, and deliver scalable full-stack features for a financial platform serving local businesses across Europe, focusing on the Business Account portal and merchant-facing web experiences.

Role type

Senior Full Stack Engineer (Fintech)

Builds

Business Account portal, transaction feeds, balance/statement views, and multi-currency interfaces for merchant users.

Domain

Fintech / Financial Services / European Local Business SaaS

Deliverable

production ML models | product features

Required skills

TypeScript, React.js, Next.js, GraphQL, Java/Spring Boot, State Management (Redux/Context/Zustand), Web Performance Optimization, Git

Preferred skills

Fintech/Banking domain experience, SCA/2FA/PSD2 compliance knowledge, Mobile-first to web adaptation, AI coding tools usage, Multi-market localization

Technologies

React, TypeScript, GraphQL, Next.js, Java, Spring Boot, Apollo Client, Redux, Git

Responsibilities

Lead design and delivery of full-stack features for the Business Account portal; Translate complex financial workflows into secure user experiences; Build high-performance interfaces for transaction data and multi-currency views; Develop and maintain GraphQL schemas and API integrations; Write clean, tested code and participate in cross-stack code reviews; Resolve performance bottlenecks and production issues across the stack.

Seniority

Senior, hands-on IC

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