Middle+ Full stack Engineer (Node.js/Flutter)

Madfish; United Kingdom; Remote; GBP 50,000 - 75,000; Full time

Job summary

A technology company is seeking a Middle+Senior FS Flutter & Node.js developer with a strong focus on back-end development. The role involves maintaining and improving the existing app’s back-end, collaborating with a front-end developer, and ensuring stable performance before launch. Ideal candidates should be experienced in Node.js, Flutter, and API development, and have strong problem-solving skills. This is a remote position with a requirement for proficiency in English.

Qualifications

• Strong experience in back-end development focusing on Node.js and Flutter.
• Ability to work independently and collaboratively with front-end developers.
• Experience with existing codebases and quick learning.

Responsibilities

• Maintain and improve the existing app’s back-end.
• Collaborate with front-end developer to implement features.
• Ensure app stability and bug-free performance.

Skills

Back-end development

Node.js

Flutter

TypeScript

API development

Database design

Job description

Main requirements

• Experience with both Node & Flutter is a must, but BE is a main focus

Requirements

Position name: Middle+Senior FS Flutter & Node.js (Back-end heavy)
Level: Middle+Senior

Hard skills:

• Strong experience in back-end development (Node.js, TypeScript, Firebase, or similar).
• Experience with Flutter / mobile app integration.
• Ability to read, understand, and work with existing codebases quickly.
• Experience in API development, database design, and server-side logic.
• Familiarity with bug fixing, performance optimization, and deployment processes.

Soft Skills / Additional:

• Problem-solving and debugging skills.
• Ability to communicate clearly with front-end engineers and follow existing documentation.
• Ability to work independently, but collaborate with part-time front-end developer.

Responsibilities:

• Maintain and improve the existing app’s back-end.
• Collaborate with the front-end developer to implement features and fixes.
• Ensure app stability and bug-free performance before official launch.
• Quickly understand the existing code structure and documentation.
• Provide guidance and solutions for any technical challenges in both front-end and back-end areas.
• Optionally, assist in testing and QA processes.

Office/Remote: Remote
English: Upper (must have)
Time zone: the client’s team availabile within United Arab Emirates timezone