Senior Data Scientist, Consultant

Squarcle

Data Science Senior Consultant at Squarcle advising on data science and digital challenges. Collaborating with clients to enhance business efficiency and profitability through data-driven strategies.

Posted 4/12/2026full-timeBristol • 🇬🇧 United KingdomSeniorWebsite

Tech Stack

Tools & technologies

NumpyPandasPythonPyTorch

About the role

Key responsibilities & impact

Designing and implementing machine learning models and algorithms for predictive and prescriptive analytics.
Developing data-driven solutions to address business challenges and support decision-making processes.
Translating complex, real-world business problems into mathematical models using variables, constraints, and objective functions.
Utilising optimisation solvers (e.g., Gurobi, CPLEX, OR-Tools) to solve NP-hard problems involving discrete choices and constraints.
Building scalable, production-ready pipelines and integrating models into live client-facing systems.
Developing linear, non-linear, stochastic, and heuristic-based models.
Working with product squads, engineers, and stakeholders to define business goals and translate them into actionable, data-driven decisions.
Monitoring models for speed, robustness, and precision, troubleshooting slow convergence, and iterating on algorithms.
Produce project plans, designs and prototype solutions to demonstrate early benefit and value.
Work in an Agile manner, collaborating closely with clients and colleagues to iteratively refine and deliver the solution within the Discovery – Alpha – Beta – Live delivery model aligned to GDS
Ensure appropriate Agile ceremonies are performed and necessary information (e.g. progress, releases, risks, issues) is shared with the project manager and other stakeholders.
Work effectively in diverse teams within an inclusive team culture where people are recognised for their contribution.
Assist the Head of Digital in developing Squarcle’s Technology and Digital capabilities.
Conduct performance reviews and annual appraisals for all direct reports.
Lead, coach and mentor team members.
Commit to continuous development by supporting the organisation of team events, training sessions and recruitment activities.
Carry out other duties as specified by the Manager.
Deputise for the Manager during periods of absence.

Requirements

What you’ll need

BSc/BA in Computer Science, Engineering or a related analytical or technical field.
Python programming skills and proficiency with essential libraries, e.g. pandas, numpy, pytorch
Strong data modelling and analysis skills
Traditional machine learning experience (e.g. regression, clustering, classification, mixed integer programming)
Strong experience with mixed integer programming (MIP) and mathematical optimisation techniques
Practical experience using optimisation solvers (e.g. Gurobi, CPLEX, OR-Tools or similar)
Experience deploying optimisation or analytical models into production environments
Software development best practices
Version control practices with Git
Exceptional problem-solving skills – an analytical, innovative, and creative mindset
Well-developed core consulting skills e.g. research, analysis, presentation, and attention to detail
Excellent inter-personal and communication skills, both written and verbal
Ability to be self-directed and be an independent contributor to the team
Intellectual curiosity, exceptional client service, and a strong work ethic
A team player dedicated to contributing toward the outcome desired by the team
Ability to adapt to rapidly changing circumstances and to think creatively to solve client issues

Benefits

Comp & perks

Generous leave package 26 days of annual leave (including your birthday!) plus UK bank holidays — increasing to 27 days after three years, and 28 after seven years
You’ll also get five extra days for your five and 10-year anniversaries
Additional leave for members of the Reserve Forces and CFAV.
Private medical insurance Provided once you’ve completed your probation.
£1,000 referral bonus for successful hires
Performance-related awards
Milestone and life-event hampers to celebrate life’s big moments
Annual training week abroad
Funding for qualifications that benefit both you and the business
Cycle to work scheme
Discounted travel through funded railcards
Pension Our pension provider is NOW Pensions, pension contributions are 3% employer and 5% employee

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

machine learningpredictive analyticsprescriptive analyticsdata modellingmathematical optimisationmixed integer programmingoptimisation solversPythonpandasnumpy

Soft Skills

problem-solvinganalytical mindsetcommunication skillsteam playerself-directedintellectual curiosityclient serviceadaptabilityleadershipmentoring

Certifications

BSc in Computer ScienceBA in Engineeringrelated analytical field