Frontend Engineer, Thema

London or Lisbon

£65-75k

React

TypeScript

Figma

REST API

Tailwind CSS

WebGL

Junior and Mid level

London

2+ days a week in office (Work from London & remotely, with quarterly off-sites in different locations)

The AI platform that maps any market, instantly

Posted today

The AI platform that maps any market, instantly

1-20 employees

B2BArtificial IntelligenceDeep TechBusiness IntelligenceMachine Learning

Posted today

£65-75k

React

TypeScript

Figma

REST API

Tailwind CSS

WebGL

Junior and Mid level

London

2+ days a week in office (Work from London & remotely, with quarterly off-sites in different locations)

1-20 employees

B2BArtificial IntelligenceDeep TechBusiness IntelligenceMachine Learning

Company mission

To be the world leading source for understanding markets.

Job

Company

Role

Who you are

3+ years of TypeScript development in modern web or mobile apps, including React. React Native exposure is a plus
APIs: Skilled at consuming REST services for seamless data integration
Styling & Accessibility: Deep knowledge of CSS, semantic markup, and building accessible interfaces. A strong eye for clean UX and interaction details; comfortable delivering pixel-perfect UI where appropriate
Code Quality: Proven ability to write clean, testable, and maintainable code using modern development workflows
Communication & Autonomy: Strong English skills and the ability to manage your own workload effectively. Comfortable collaborating in Figma and giving/receiving design feedback
Learning mindset: You keep pace with the Frontend world (new frameworks, RFCs, performance techniques) and share what you learn

Desirable

Open source contributions: We value open-source contributions over academic accolades—half our team was discovered through their exceptional open-source work

What the job involves

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), with a focus on elegant, clean UX and delightful interactions
Champion frontend best practices, from performance and accessibility to code quality and design consistency
Aim for pixel-perfect execution where it matters, balancing polish with delivery speed
Develop your skills continuously by learning new techniques, technologies, and methods. Stay up to date with the fast-moving frontend ecosystem (framework updates, standards, build tooling)
Implement best practices in coding, testing, and deployment
Bring curiosity, initiative, and a willingness to dive into ambiguous problems
Mobile (nice to have): Help build and support our upcoming React Native mobile app

Application process

1. Apply on WTTJ
2. Video call with team lead
3. Video call with CTO
4. Technical test
5. Cultural fit interview

Salary benchmarks

Our take

Thema is a deep-tech AI company building the foundational infrastructure to understand how the economy is connected.

It does this by processing hundreds of terabytes of data and develops novel embedding techniques to crack the problem of company similarity and track how markets evolve over time.

With backing from top investors, support from the UK government, and partnerships with world-class institutions like Cambridge and Sanford, Thema sure is making a name for itself.

Freddie

Company Specialist at Welcome to the Jungle

Company

Employee endorsements

Intelligent people

"Working with genuine experts in their fields across commercial, AI research and engineering has had a huge impact on me whilst at Thema. It's hugely..."

Browse all endorsements

Funding (2 rounds)

Jun 2024

$1.4m

Grant

Mar 2024

$3.3m

Seed

Total funding: $4.6m

Company benefits

Early-Stage: Join pre-Series A with meaningful equity and amazing opportunity for growth
Real Ownership: Take on core systems and have a tangible impact
Start-of-the-art AI native stack: Work with leading AI researchers, helping to engineer a world-class product with genuine innovation
High-Spec Equipment: We’ll kit you out with a top of the range development laptop, and any tools you need to succeed
Hybrid & Flexible: Work from London & remotely, with quarterly off-sites in different locations (e.g. Lisbon)

Company values

Operate at the Frontier - Build at the edge of what’s possible in AI and engineering
You Ain’t Gonna Need It (YAGNI) - Use what already exists. Only build what’s needed
Unblock Each Other - Step in. Step up. Success is a team sport
No Room for Ego - Decide on merit. The best idea wins - always
Honest Conversations Early - Say it early. Say it straight. Candour clears the path

Company HQ

Spitalfields, London, UK

Leadership

Finn MacCabe

(CEO)

Founded Zero 1, raising £20M+ from FTSE 100 Corporates and VCs. Board Member at Lifted (Series A VC-backed).

Jonathan Lifschutz

(CTO)

Ex-Head of Engineering at msk.ai (exited). MSc in Computer Science & Cambridge University alumni.

Dimo Angelov

(Chief Data Scientist)

PhD in AI, ex-Senior Data Scientist for the Canadian Government. Creator of Top2Vec (https://github.com/ddangelov/Top2Vec) 3k+ GitHub stars.

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