Fast paced AI Startup - Junior/Graduate Full Stack Software Engineer - Fully Remote

Opus Recruitment Solutions Ltd; City Of London; Remote; GBP 30,000 - 45,000; Full time

Job summary

A fast-moving AI startup is seeking an entry-level Full Stack App Developer to lead the development lifecycle for mobile, web, and desktop applications. The role requires a BSc in Computer Science and a strong foundation in programming fundamentals. This is an exciting opportunity with ownership and autonomy to build high-quality applications from scratch.

Qualifications

• Strong understanding of architecture, algorithms, APIs, and data structures.
• Ability to build and deliver working software independently.
• Enthusiasm for integrating AI tools into workflows.

Responsibilities

• Lead the full development lifecycle for new apps and features.
• Build and maintain production-grade applications across platforms.
• Own both frontend and backend implementation.

Skills

Programming fundamentals

AI tool integration

Self-driven

Education

BSc in Computer Science

Tools

React

Node

Job description

Location: Remote (London-based or commutable to applicants only)

Type: Full-time

Experience Level: Entry-level (no prior professional experience required)

A fast-moving, AI startup is looking for aFull Stack App Developerto take full ownership of the development lifecycle across mobile, web, and desktop platforms. You’ll be the primary engineer on multiple projects, working directly with the founder to build and launch high-quality applications from scratch.

This is a rare opportunity for someone early in their career to step into a high-responsibility role. If you’ve built strong personal or academic projects and are excited to work with autonomy, speed, and precision, we want to hear from you.

What You’ll Do

• Lead the full development lifecycle for new apps and features—from architecture to release
• Build and maintain production-grade applications across platforms (mobile, web, desktop)
• Own both frontend and backend implementation, integrating APIs, databases, and third-party services
• Use AI tools to accelerate development and improve quality
• Make thoughtful technical decisions and communicate trade-offs clearly
• Collaborate directly with leadership to plan sprints and deliver to deadlines
• Continuously improve systems and workflows for speed and reliability

Requirements

• BSc in Computer Science (minimum)
• Strong understanding of programming fundamentals (architecture, algorithms, APIs, data structures)
• Demonstrable ability to build and deliver working software independently (e.g. GitHub, personal/academic projects)
• Enthusiasm for integrating AI tools into your workflow
• Clear reasoning and ability to justify design decisions
• Highly self-driven and capable of working with limited direction

Bonus Points

• Experience with React Native, Swift, or web frameworks like React/Next.js
• Familiarity with backend frameworks or cloud platforms (e.g. Node, Supabase, Firebase)
• Interest in automation, developer tools, or system design
• An eye for product quality and user experience

Ready to build with speed, creativity, and ownership? Apply now.