Senior Applied Machine Learning Engineer - Catalogue Intelligence

Das ist der Job

About the Role We’re building a more intelligent, scalable product catalogue across multiple markets.

Darum lohnt es sich

Requirements Experience & Skills Experience building and shipping production data or ML systems with measurable business impact Strong Python and SQL skills, with the ability to work across data pipelines end‑to‑end Comfort applying modern approaches such as LLMs, multimodal models, and information extraction techniques, and taking them from experimentation into production with proper evaluation, monitoring, and cost control Experience working with messy, unstructured or semi‑structured data (e.g. text, images, product data) Ability to design systems that make decisions, not just predictions Strong judgement in balancing accuracy, risk, and business impact Experience with ecommerce or marketplace catalogues is a plus, but not required How you’ll operate Take ownership of problems end‑to‑end, from idea through to production impact Build systems that are scalable, testable, observable, and auditable Design automation with confidence thresholds, monitoring, and feedback loops in mind Maintain clear documentation, evaluation frameworks, and versioning for models and logic Work pragmatically, favouring simple solutions that deliver impact quickly Communicate trade‑offs clearly to technical and non‑technical stakeholders Comfortable working in environments where data is incomplete, inconsistent, and constantly evolving Working across cloud‑based data systems (GCP), building and deploying data pipelines and production ML workflows; experience with orchestration tools (e.g.

Airflow or similar), CI/CD, and model deployment practices is beneficial Benefits The salary on offer for this role is £65000‑£75000 depending on experience.

We also offer the following benefits: Company equity – in return for helping us grow, we’ll offer you a share of the business we are all working to build 25 days annual leave + Bank Holidays 1 extra day off for your birthday Employee Assistance Programme Perks at Work benefit platform Opportunities for career development and progression This role is UK remote or hybrid if you live near our Manchester or Bournemouth offices.

Core capabilities like auto‑categorisation and brand detection already exist, but they are not yet connected into a system that consistently drives quality, discovery, and growth. This role owns that system.

The Senior Applied ML Engineer – Catalogue Intelligence is responsible for building the machine learning systems that power OnBuy’s catalogue decisioning engine. Core mission Turn catalogue rules and commercial logic into automated, data‑driven systems that continuously improve discovery, data quality, pricing competitiveness, and revenue outcomes.

What you’ll be responsible for You’ll take ownership of how product data is structured, validated, and used across the platform.

Improving how we classify and understand products at scale Raising the overall quality of catalogue data and defining what “good” looks like Ensuring product data supports effective search, filtering, and discovery Identifying gaps in our catalogue and surfacing opportunities for growth Improving how our catalogue performs across external channels Build and evolve the systems and decision logic that enable this, iterating based on real‑world performance and data.

You’ll work across: Structured data (catalogue attributes, GTINs, taxonomy) Unstructured data (text and images) Behavioural data (search, clicks, conversions) How you’ll work You’ll build directly using SQL and Python on top of: BigQuery Airbyte Google Datastream You’ll be working across data pipelines, information extraction, and production ML systems, combining rules, heuristics, and ML/LLMs where appropriate.

The focus is on shipping practical systems quickly, validating them with real data, and improving them over time. You’ll work closely with engineering, product, and analytics, but you’ll be expected to own and deliver the core logic yourself. This role is not focused on research or offline modelling.

You’ll be expected to build systems that operate in production and directly influence how products appear and perform on the platform. Please only apply if you have the full right to work in the UK. Our Commitment OnBuy is an equal opportunities employer.

We are dedicated to creating a fair and transparent workforce, starting with a recruitment process that does not discriminate on the basis of gender, sexual orientation, marital or civil partnership status, pregnancy or maternity, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief, disability, or age. #J-18808-Ljbffr