Senior Full Stack Engineer

Jobtailor; Porto; Presencial; EUR 60 000 - 90 000; Tempo integral

Resumo da oferta

Jobtailor is seeking a senior frontend engineer to lead the development of scalable features for a Business Account portal. You will deliver end-to-end solutions using React, TypeScript, and GraphQL, collaborating with product and design to meet merchant needs and secure APIs.

The role emphasizes strong TS proficiency, Next.js experience, and a focus on performance, code quality, and cross-functional teamwork in a fast-paced environment.

Qualificações

• 5+ years of professional frontend/web development experience.
• Expert-level TypeScript, including advanced type manipulation and generics.
• Strong proficiency in React.js with a type-safe approach.
• Experience supporting backend services in Java and Spring Boot.
• Extensive experience with Next.js for SSR/SSG and TS integration.
• Solid understanding of ES6+ JavaScript, HTML5, and CSS3.
• Experience with state management libraries (Redux, Context API, Zustand) in TS.
• Strong experience consuming GraphQL APIs (Apollo Client) with typed responses.
• Strong web performance optimization knowledge.
• Git experience.
• Excellent problem-solving and collaboration in cross-functional teams.

Responsabilidades

• Lead the design, development, and delivery of scalable, responsive full stack features for the Business Account portal using React, TypeScript, and GraphQL.
• Work closely with product and design teams to understand merchant needs and translate complex financial workflows into secure, end-to-end user experiences backed by reliable APIs.
• Build and maintain data-rich, high-performance interfaces for transaction feeds, balances, statements, and multi-currency views.
• Develop and maintain GraphQL schemas, resolvers, and API integrations.
• Write clean, maintainable, and well-tested code across the stack.
• Actively participate in code reviews across frontend and backend contributions.
• Identify and resolve performance bottlenecks, data inefficiencies, and production issues across the full stack.
• Stay up-to-date with the latest frontend technologies, trends, and best practices.

Descrição da oferta de emprego

Responsibilities

• Lead the design, development, and delivery of scalable, responsive full stack features for the Business Account portal using React, TypeScript, and GraphQL.
• Work closely with product and design teams to understand merchant needs and translate complex financial workflows into secure, end-to-end user experiences backed by reliable APIs.
• Build and maintain data-rich, high-performance interfaces for transaction feeds, balances, statements, and multi-currency views.
• Develop and maintain GraphQL schemas, resolvers, and API integrations.
• Write clean, maintainable, and well-tested code across the stack.
• Actively participate in code reviews across frontend and backend contributions.
• Identify and resolve performance bottlenecks, data inefficiencies, and production issues across the full stack.
• Stay up-to-date with the latest frontend technologies, trends, and best practices.

Requirements

• 5+ years of professional experience in frontend/web development.
• Expert-level proficiency in TypeScript, including advanced type manipulation, generics, and understanding of complex type inference.
• Strong proficiency in React.js and its core principles, developed with a type-safe approach.
• Experience supporting Backend services in Java and Spring Boot.
• Extensive experience with Next.js for server-side rendering, static site generation, and API routes, with a focus on TypeScript integration.
• Solid understanding of modern JavaScript (ES6+), HTML5, and CSS3.
• Experience with state management libraries (e.g., Redux, Context API, Zustand) in a TypeScript environment.
• Strong experience consuming GraphQL APIs (e.g., Apollo Client), with an understanding of how to define and use types for API responses.
• Strong understanding of web performance optimisation techniques.
• Experience with version control systems (e.g., Git).
• Excellent problem-solving skills and attention to detail.
• Strong communication and collaboration abilities, especially when working within cross-functional teams spanning product, design, backend, and mobile engineering.

Core Competencies

Demonstrates expertise in Full Stack Development with a focus on TypeScript, React, and GraphQL, while effectively collaborating with cross-functional teams to deliver high-performance user experiences. Proficient in optimizing web performance and maintaining clean, well-tested code across the stack.