Full Stack Developer

About the job

Full Stack Engineer (Contract) - AI-Powered Prototypes

Location: Remote - full right to work in the UK required

Commitment: Full-time, 3-6 month contract

Start Date: ASAP

Sphere is looking for a Full Stack Engineer to lead the build and delivery of monthly MVPs for an early-stage startup client. This client is building an AI-native learning experience to help young adults develop essential life and career skills, with their first prototype focusing on communication using AI to simulate real-world scenarios and deliver personalized feedback.

What You'll Do

• Own end-to-end prototype delivery: Build, launch, and iterate on MVPs across front-end and back-end.
• Front end: Create clean, responsive web/mobile interfaces for interactive learning flows.
• Back end: Develop and manage APIs, data storage, and backend logic to support AI features and assessments.
• AI integration: Work closely with the technical lead to integrate third-party AI tools (LLMs, voice/video APIs, multimodal services).
• Ship fast, learn fast: Launch a new prototype every month, incorporating user and team feedback quickly.
• Infrastructure: Set up hosting, deployment pipelines, and lightweight QA/testing for small pilot releases.
• Collaborate cross-functionally: Work with learning strategists and designers to translate educational flows into working product experiences.
• Design with scalability in mind: While focused on prototypes, keep an eye on future productisation and technical debt.

What They're Looking For

• Full stack capability: Strong experience with front-end frameworks (e.g. React, Next.js, React Native) and back-end systems (e.g. Node.js, Python).
• AI integrations: Hands-on experience integrating AI tools and services (e.g. OpenAI, Anthropic, LangChain, Pinecone, speech/video APIs).
• Prototype mindset: You've built MVPs in fast-moving environments and are comfortable with ambiguity.
• Cloud/data experience: Familiar with AWS, GCP, or Firebase; experience working with APIs and databases.
• Delivery focus: You can ship functional, reliable software quickly - with just enough polish for live testing.
• Strong communicator: You collaborate well with non-technical teammates, including educators and designers.

💡 Bonus Experience

• Working on edtech, coaching, or learning products.
• Media integration (video/audio).
• Building dashboards or data visualisations.
• Experience designing for or working with young adult users 16 years +

Sphere Digital Recruitment is acting as an Employment Business in relation to this vacancy.

Sphere Digital Recruitment is a multi-award-winning agency specializing in recruiting marketing, sales, analytics, product, and creative talent on a permanent and contract basis in the UK, Europe, and North America. We are experts in the ever-evolving digital world, helping businesses grow their digital teams and individuals advance their careers. Our passionate recruiters are dedicated to creating meaningful and engaging experiences for our clients and candidates to drive growth and achieve results. In 2024, Sphere acquired Jasper Rose, specialists in finance and accountancy recruitment, focusing on roles within Consumer and Media businesses.