Data Scientist Senior Consultant in Bristol

Squarcle is a growing strategy, operations and digital consultancy dedicated to driving the performance of our clients. We are people orientated and pride ourselves on our people-first culture. The Technology and Digital department is responsible for providing expert technology and digitisation strategy, operational optimisation and analysis advice to clients operating within a fast-moving global environment. The team is made up of subject matter experts that work to a manager to deliver the client and internal Squarcle mandate.

The Data Science Senior Consultant reports to a manager and is responsible for the provision of independent expert advice to help identify and solve data science and digital challenges, increase value, and maximise business efficiency and profitability. Using established processes whilst working with the client's senior leadership and support staff, the consultant will assist in the creation of digital strategies, processes optimisation and identifying technology solutions to meet client needs.

PRIMARY ROLES AND RESPONSIBILITIES

• Designing and implementing machine learning models and algorithms for predictive and prescriptive analytics.
• 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 standards.
• 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.

SECONDARY ROLES AND RESPONSIBILITIES

• 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.

KNOWLEDGE, SKILLS & EXPERIENCE

ESSENTIAL

• 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.
• Successful candidates must meet the security requirements before they can be appointed. The level of security needed is a security check.

DESIRABLE

• An understanding of Defence supply chain and/or Defence Digital infrastructure and constraints.
• AI software development experience, e.g. genAI / LLM applications.

What we offer

• 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.
• 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 contributions are 3% employer and 5% employee.

Our working hours are 8:30 am – 5:30 pm (with an hour for lunch), Monday – Friday.

This role requires you to have lived in the UK for the last 5 years and obtain Security Check (SC) security clearance. Clearance must be obtained without any caveats that prevent you from carrying out the role you’ve been recruited for. If it isn’t obtained, or is obtained but with caveats that prevent you from carrying out the role, any conditional offer made to you will be withdrawn. Obtaining SC security clearance can be a lengthy process, and we reserve the right to withdraw any conditional offer made if the necessary security clearance isn’t obtained within 6 months. If you hold dual citizenship or nationality from another country, please make us aware of this during the application phase. We’re unable to offer visa sponsorship.

We’re committed to creating a diverse environment. We embrace differences and hire based on merit, giving equal consideration to all applications, regardless of gender, background, and race.