Fullstack Engineer (Python/React)

Thema; Greater London; Hybrid; GBP 45,000 - 85,000; Full time

Job summary

An innovative firm is seeking a talented Fullstack Engineer to join their dynamic team. In this exciting role, you will build and maintain web applications, collaborate on new product features, and innovate on user interfaces using cutting-edge technologies like TypeScript, React, and Python. You will have the opportunity to work on complex data visualizations and contribute to architecture discussions that shape the engineering roadmap. This is your chance to be part of a small, exceptional team that is tackling web-scale problems and making breakthroughs in AI, all while enjoying a flexible hybrid working model and significant equity in the company.

Benefits

Flexible Working

Quarterly Team Meetups

Significant Equity

Work with World-Class Team

Qualifications

• 3+ years of TypeScript development in modern web or mobile apps.
• Solid Python skills and knowledge of Docker, CI, and Infrastructure as Code.

Responsibilities

• Build and maintain web applications while innovating on user interfaces.
• Collaborate with team members to define, scope, and plan new features.

Skills

TypeScript

React

Python

CSS

Git

Communication Skills

Open Source Contributions

Tools

Docker

FastAPI

D3.js

Three.js

Terraform

Job description

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This range is provided by Thema. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

About Us

At Thema, we’re pioneering how the world understands companies, markets, and industries with foundational AI research at web scale.

We regularly process hundreds of TB of data and develop novel embedding methods to crack the problem of company similarity and track market evolution. Backed by the world’s best investors, the UK government, and working in partnership with Cambridge University and the world’s leading companies, we’re making breakthroughs that push the boundaries of AI.

What the Job Involves

We’re looking for a talented Fullstack Engineer to:

• Build and maintain our web applications.
• Collaborate with team members and clients to define, scope, and plan new features.
• Innovate on user interfaces and data visualisations (using tools like D3.js or Three.js).
• Contribute to architecture discussions and help shape our engineering roadmap.
• Develop your skills continuously by learning new techniques, technologies, and methods.
• Implement best practices in coding, testing, and deployment.

We’re a small team of exceptional engineers and researchers tackling web-scale problems no one else is approaching. If you’re ready to unlock breakthrough discoveries about companies and markets at the frontier of AI, we should work together.

Necessary Experience

• Frontend: 3+ years of TypeScript development in modern web or mobile apps, including React or Next.js.
• Backend & DevOps: Solid Python skills (type hints, async) and knowledge of Docker, CI, and Infrastructure as Code (e.g., Terraform).
• APIs: Skilled at consuming REST/GraphQL services for seamless data integration.
• Styling & Accessibility: Deep knowledge of CSS, semantic markup, and building accessible interfaces.
• Code Quality: Proven ability to write clean, testable, and maintainable code with Git version control.
• Communication & Autonomy: Strong English skills and the ability to manage your own workload effectively.
• Open source contributions: We value open-source contributions over academic accolades—half our team was discovered through their exceptional open-source work.

Example Projects

• Feature Prototyping: Collaborate on new product features—integrating REST/GraphQL services, refining UX flows, and implementing advanced data visualisations.
• Data-Driven Dashboards: Build interactive dashboards in React using D3.js or Three.js, giving users clear insights into complex data.

Relevant technologies and tools

• Typescript
• React
• Tailwind.css
• D3.js
• Webgl (Three.js or similar)
• Python
• FastAPI or similar (Flask or Django)

Competitive Compensation: Receive a competitive salary and significant equity in the company.

Flexible Working: Enjoy a hybrid model that blends remote flexibility with onsite collaboration, plus quarterly team meetups in inspiring cities—our next one is in Lisbon!

Exceptional Team and Technology: Work with a world-class team of engineers and researchers on state-of-the-art tools in search, retrieval, and AI innovation.

Growth and Impact: Shape the future of a fast-growing startup, solving hard problems in a dynamic, high-potential environment.

Seniority level

Mid-Senior level

Employment type

Full-time

Job function

Engineering and Information Technology

Industries

Software Development