Junior Data Scientist I - DSaaS

MarketCast; Greater London; Hybrid; GBP 30,000 - 52,000; Full time

Benefits offered by this job

Free movie tickets

29 days annual leave

Flextime with core hours 10am-3pm

2 days work from home per week

4% pension match

Enhanced maternity pay

Regular social events

LinkedIn Learning

Job summary

MarketCast is seeking a Junior Data Scientist in London/Reading to support analytical research projects within the client-facing Data Science unit. You will explore data sources, build models, and create bespoke client reports using Python, SQL, and Streamlit on our AWS platform.

The role emphasizes collaboration with global teams, data visualization, strong math/statistics foundations, and a desire to learn in a fast-growing environment. A bachelor’s degree is required; master’s is a plus.

Qualifications

• Bachelor’s degree in a quantitative or data-related field.
• Proficiency with SQL, Python and Pandas.
• Strong analytical mindset and problem-solving skills.

Responsibilities

• Explore and extract data from multiple sources to create insights.
• Design and develop algorithms, programs, methods and processes.
• Research, develop, and test supervised and unsupervised learning models.
• Maintain and improve ML pipelines, processes and products.
• Use Python, SQL and Streamlit for reporting on the AWS data platform.
• Collaborate with India-based Data Engineering and US/UK teams.

Skills

SQL

Python

Pandas

Communication

Problem solving

Education

Bachelor's degree in a related field

Master's degree is a plus

Tools

Streamlit

Job description

Junior Data Scientist

London, UK, Reading, UK

Role Impact:

The Junior Data Scientist plays a pivotal role in supporting the execution and delivery of analytical research projects within MarketCast’s client-facing Data Science business unit in the UK. There are already 25+ Data Scientists in the entire Data Science team, and we continue to grow apace! This new role is responsible for analysing extremely large datasets, creating bespoke client reports, exploring new datasets and building new algorithms to deliver services to clients.

We're looking for someone to:

• Explore and extract data from multiple sources and interrogate this data to create meaningful insights
• Design and develop algorithms, programs, methods and processes.
• Research, develop, and test supervised and unsupervised learning models
• Maintain and improve our machine learning pipelines, processes and products
• Use tools and languages such as Python, SQL and Streamlit for reporting and analysis on our AWS data platform
• Work with our India based Data Engineering team and our Sales and Market Research Teams in the US and UK

Qualifications:

We are looking for a Junior Data Scientist who possesses a strong analytical mindset, a passion for data, and a desire to learn and grow in a dynamic environment. The ideal candidate will have a solid foundation in mathematics, statistics, and computer science, as well as excellent communication and problem-solving skills. Experience with Machine Learning algorithms and data visualization tools is a plus.

Requirements include:

• A Bachelor's degree in a subject such as Applied Mathematics, Psychology, Sociology, Statistics, Economics, Engineering, Computer Science, etc. (a Master's Degree or higher is a plus)
• Solid data analytics skills; proven proficiency with SQL, Python and Pandas
• The ability to write Python code; must be able to build, execute and test algorithms and models
• The ability to understand business problems, draw conclusions from data and recommend actions on how best to solve these problems
• Strong communications skills, and an ability to document requirements and work with other team members
• Experience with TV viewing data, the TV industry and/or Media Industry experience; this isn't a pre-requisite, but a genuine interest is
• A curiosity about data and enjoy building data visualisations that clearly articulate insight

Who We Are:

MarketCast measures what moves people. Powered by AI, trained on decades of verified consumer response data, along with proprietary technology, MarketCast is the marketing effectiveness partner for the world's most ambitious brands, connecting emotional resonance to real-world business outcomes across advertising, sponsorships, content, brand health, and advanced analytics. With category-deep expertise spanning sports, entertainment, travel, automotive, and consumer brands, our team of seasoned industry strategists brings unmatched human intelligence to every engagement, turning complex data into decisive action so brands know exactly what's working, why it's working, and what to do next.

At MarketCast, we don't just accept difference - we embrace it, support it, and thrive on it for the benefit of our global culture and success. MarketCast is proud to be an equal opportunity workplace. We are committed to equal employment opportunity regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. If you have a disability or special need that requires accommodation, please let us know. Check us out on LinkedIn and at marketcast.com.

Our Values:

Move The Needle

We turn insight into action and action into impact, acting with urgency and intention at every level, anticipating what's needed, executing with discipline, and driving outcomes that are measured and meaningful.

Client Success is Our Scoreboard

We win when our clients win. Delivering scaled, tech-enabled solutions that drive measurable impact and value to build lasting partnerships.

Grow Every Day

Expertise is earned continuously by investing in our craft, our colleagues, and our company.

Own It

Take responsibility for outcomes, not just outputs.

Benefits:

• Free movie tickets!
• 29 days annual leave PLUS Bank Holidays
• Flextime with core hours between 10am and 3pm
• 2 days’ work from home, per week
• 4% match pension scheme
• Enhanced maternity pay
• Regular social events in both UK locations
• Professional growth and career development including LinkedIn Learning

In addition to your salary, MarketCast believes in providing a competitive total rewards package for its employees. All benefits are subject to eligibility requirements, and the terms of our official plan may be modified or amended from time to time.

GENERAL DATA PROTECTION REGULATION (UK GDPR) NOTICE: The organisation collects and processes personal data relating to its applicants, employees and former employees to manage pre-employment and employment relationships and post-employment obligations. The organisation is committed to being transparent about how it collects and uses that data and to meeting its data protection obligations. For further information on the information we collect, how it’s used, and how it's protected, please contact the MarketCast UK HR Team.