Senior Full Stack Developer, QuantSpark

Javascript, React.js, Python with Flask/Django

£53-78k

+ Share options.

React

MongoDB

AWS

TypeScript

Python

Django

Redshift

NumPy

Flask

Git

Mid and Senior level

London

2+ days a week in office

QuantSpark is revolutionising how data and AI serve society

Job no longer available

QuantSpark is revolutionising how data and AI serve society

21-100 employees

B2BArtificial IntelligenceBig dataAnalyticsConsultingBusiness IntelligenceMachine LearningData Analysis

Job no longer available

£53-78k

+ Share options.

React

MongoDB

AWS

TypeScript

Python

Django

Redshift

NumPy

Flask

Git

Mid and Senior level

London

2+ days a week in office

21-100 employees

B2BArtificial IntelligenceBig dataAnalyticsConsultingBusiness IntelligenceMachine LearningData Analysis

Company mission

Strategy consultancy meets product studio: We build AI-powered tools that turn data into decisive competitive advantage.

Job

Company

Role

Who you are

Strong experience in Python web development (Flask/Django, Gunicorn and ORMs)
Strong experience in JavaScript front-end development (React.js, Typescript, Webpack, HTML, CSS)
Experience in database and caching technologies (e.g., PostgreSQL/MySQL, MongoDB, Redis)
Strong experience in unit testing, TDD
Experience in code management, branching strategies, and CI pipelines (Git, Bitbucket)
Knowledge of containerisation technologies (Docker, Kubernetes)
Excellent communication and interpersonal skills, with the ability to collaborate effectively with internal and external stakeholders

Desirable

Experience with AWS services (S3, Redshift, RDS, Lambda, EC2, ECS, EKS)
A keen eye for good user interface design and user experience
Experience with Python packages used for data science (familiarity with Pandas, Numpy, Scikit, Tensorflow, etc)
Strong analytical and problem-solving abilities to identify and address technical issues effectively
Ability to take ownership and manage new and existing workstreams

What the job involves

QuantSpark are looking for a talented Senior Full Stack Developer to join our London team on a permanent, hybrid basis!
As a Senior Full Stack Engineer, you will develop client-facing functionality, such as web applications and API endpoints
From detailing requirements, designing, and developing a solution to testing and validating that the solution does match user expectations
You will work both on the backend (e.g., Python/API endpoints) and frontend (e.g., Typescript/React) of features while also being an example to others on project teams by demonstrating the appropriate decision making around and implementation of design patterns, paradigms, and application architecture

Salary benchmarks

Our take

QuantSpark helps governments and businesses to strategically apply data science through the development of complex decision-making software. Primarily, its work involves analysing large datasets and systems in order to understand customer behaviour and help clients make informed decisions for strategic planning in sales and marketing.

In recent years, big data has become central to the operation of businesses large and small, and this has led to great demand for data scientists fluent in sophisticated modelling and analysis. QuantSpark seeks to go a step further, providing a service which combines data science with commercial insight- effectively providing both services through one transaction. By doing this, QuantSpark hopes to offer clients a more meaningful insight into their data than a standard consultancy could.

Already, the company has an impressive client list, including the UK Government, the Australian Government and Bain Capital. QuantSpark's tools and solutions are developed to become embedded in its clients' operations, ensuring a long-lasting relationship between them, and meaning that, as QuantSpark continues to expand its client base, its model should allow it to see continued success in the future.

Steph

Company Specialist at Welcome to the Jungle

Company

Company benefits

Tech for good: We are passionate about giving our team the chance to have a real social impact and will have the opportunity to work on a wide variety of impactful projects
Training budget: Everyone in QuantSpark has £6,000 training budget and 12 ring-fenced days a year to spend on their own professional development
Work abroad for up to 1 month per year
Generous EMI Share Options scheme
Socials, clubs and guilds to connect with colleagues and share knowledge
Hybrid working (2-3 days in office per week)
Dog friendly office
Cycle to work scheme. Onsite showers
25 days annual leave + bank holidays + buy/sell 5 days annual leave
Pension matched up to 6%
Vitality Private healthcare
Annual performance bonus: Company profit share scheme and a personal performance bonus of 10%

Company values

Problem Solving Power: We thrive on solving the biggest challenges with data, strategy, and AI - delivering clarity from complexity.
Innovation That Lasts: We go beyond solutions - reimagining operations and scaling impactful innovation across industries.
Results That Matter: We focus on outcomes that count - driving efficiency, profitability and positive societal impact.

Company HQ

London, UK

Articles

Unlocking the Potential of Generative AI for Business Success

Vertical AI Platforms vs. General-Purpose LLMs

Analytics and Data Science for Business Leaders

Leadership

Adam Hadley

(Co-Founder & CEO)

Entrepreneur and CBE Adam leads QuantSpark and Tech Against Terrorism, using AI and analytics to tackle global challenges, strengthen security, and foster economic growth in the UK.

Diversity, Equity & Inclusion at QuantSpark

As an AI-first consultancy tackling complex challenges from economic crime to government fraud prevention, we know that diverse perspectives drive better solutions. Different backgrounds, experiences and ways of thinking aren't just nice to have—they're essential to building technology that works for everyone and solving problems others miss.
Transparent progression frameworks ensuring fair opportunities for growth regardless of background
Inclusive recruitment practices designed to attract talent from underrepresented groups in tech and data science
Regular culture initiatives like our peer feedback sessions, workshops and AMA's where we actively shape our workplace together

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