Quantexa Machine‑Learning Jobs in 2025: Your Complete UK Guide to Joining the Decision‑Intelligence Revolution
Money‑laundering rings, sanctioned entities, synthetic identities—complex risks hide in plain sight inside data. Quantexa, a London‑born scale‑up now valued at US $2.2 bn (Series F, August 2024), solves that problem with contextual decision‑intelligence (DI): graph analytics, entity resolution and machine learning stitched into a single platform. Banks, insurers, telecoms and governments from HSBC to HMRC use Quantexa to spot fraud, combat financial crime and optimise customer engagement.
With the launch of Quantexa AI Studio in February 2025—bringing generative AI co‑pilots and large‑scale Graph Neural Networks (GNNs) to the platform—the company is hiring at record pace. The Quantexa careers portal lists 450+ open roles worldwide, over 220 in the UK across data science, software engineering, ML Ops and client delivery.
Whether you are a graduate data scientist fluent in Python, a Scala veteran who loves Spark or a solutions architect who can turn messy data into knowledge graphs, this guide explains how to land a Quantexa machine‑learning job in 2025.
Why Quantexa Is a Top Employer for ML Talent in 2025
1. Real‑World Impact at Scale
Quantexa’s decision‑intelligence platform ingests billions of records and builds graphs with trillions of relationships. Its alerting models prevented an estimated £8 bn in fraud losses in 2024 alone. Your model tweaks can protect pensioners from scams or unearth sanctioned shipping networks.
2. Tech Stack That Blends Graph & ML
Engineers work with Spark 3.5, Scala 3, Python 3.12, Neo4j/JanusGraph, AWS EMR, Kubernetes, Argo Workflows, MLflow and GNN frameworks like PyG and Deep Graph Library. You can deep dive into both big‑data pipelines and cutting‑edge graph ML.
3. UK Roots, Global Footprint
Head‑quartered by Old Street’s Silicon Roundabout, Quantexa now operates Leeds (Northern Tech Hub), Cheltenham (National Security) and offices in New York, Toronto, Sydney, Dubai and Tokyo. You can start in London and spend a quarter in Sydney without switching employer.
4. People‑Centric & Flexible Culture
A 2024 Great Place to Work® survey put Quantexa’s UK employee satisfaction at 93 %. Staff enjoy hybrid schedules (two‑remote days), 10 % learning time and "Mission Weeks" where cross‑functional teams prototype new features.
2025 Hiring Outlook: Generative DI & Public‑Sector Expansion Drive Growth
Quantexa’s FY 2024/25 guidance projects 45 % revenue growth, fuelled by:
AI Studio Roll‑Out – LLM‑powered insights and natural‑language graph querying.
Government & Defence contracts – context analytics for economic‑crime units.
Customer Intelligence – telco churn prediction and hyper‑personalised offers.
HR plans to add 600 employees globally in 2025; UK expansion focuses on ML research, platform engineering and customer solutions.
Hot‑Demand Skills for 2025
• Entity resolution & fuzzy‑matching algorithms • Graph neural networks (GraphSAGE, GAT, HGT) • Large‑language‑model integration (OpenAI, Bedrock, Llama 3) • Spark performance tuning & Delta Lake optimisation • Feature‑store design (Feast, Hopsworks) • MLOps (Kubeflow, MLflow, SageMaker pipelines) • Streaming data (Kafka, Flink) for real‑time scoring • Secure software delivery (Terraform, AWS Security Hub, Snyk)
Key UK Sites & What Happens There
• London (Old Street HQ) – Core platform, ML research, customer success and GTM.
• Leeds Tech Hub – Data‑engineering squads, graph analytics accelerator team.
• Cheltenham – National‑security engagements; DV‑cleared ML and DevOps roles.
• Remote UK – Field data scientists and delivery engineers supporting client deployments.
Core Job Families Explained
Below is a whistle‑stop tour of Quantexa’s hiring categories, with ATS‑friendly keywords.
1. Machine Learning Engineering
Keywords: PySpark, sklearn, PyG, MLflow, GNN, AUC, F1, SHAP
ML engineers develop graph‑based classification, risk scoring and generative explanation models, iterating with petabyte‑scale datasets.
2. Data Engineering & Platform
Keywords: Scala, Spark, Delta Lake, Airflow, AWS Glue, Terraform
Data engineers ensure ingest pipelines run with five‑nines reliability and curate feature stores for ML teams.
3. Solution Engineering & Delivery
Keywords: ETL, Client Onboarding, Data Mapping, AML, KYC
Delivery engineers embed on client sites, configuring entity‑resolution rules and deploying models to production clusters.
4. MLOps & DevOps
Keywords: Kubernetes, Argo, GitHub Actions, Prometheus, Grafana, Feature Store
MLOps teams automate training, model registry, CI/CD and real‑time inference monitoring.
5. Product & UX Design
Keywords: Storybook, React, Graph Visualisation, D3.js, User Research
Designers craft intuitive graph‑exploration UIs and LLM‑powered natural‑language query interfaces.
6. Security & Governance Engineering
Keywords: ISO 27001, SOC 2, Data Masking, IAM, Attribute‑Based Access Control
Security engineers implement fine‑grained controls for highly regulated banking and government datasets.
The Quantexa Hiring Process (UK Focus)
Online Application & Recruiter Screen – ATS finds key skills; HR checks salary expectations.
Technical Assessment – choice of coding challenge (Scala/Python) or case study (for solution roles).
Panel Interviews – 3–4 rounds covering algorithms, system design, behavioural and a Values Interview (Integrity, Collaboration, Innovation).
Offer & Background Checks – employment and, where required, BPSS or SC clearance.
Average timeline: three to five weeks.
Graduate, Internship & Early‑Career Routes
• Quantexa Engineering Graduate Scheme – 18 months, rotations in platform, ML and delivery; includes AWS Solutions Architect certification.
• Summer Data‑Science Internship – 12 weeks; interns last year shipped a GraphSAGE fraud‑risk prototype.
• Degree Apprenticeships – Data science BSc with Leeds Beckett; apprentices split time between Leeds hub and remote study.
Applications open October; assessment centres Dec–Feb.
Experienced Hires & Career Ladders
Quantexa uses levels Q1–Q7 for engineers. IC track parallels management. • Senior ML Engineer (Q4) – £80k–£95k base + 15 % bonus + equity.
• Staff Data Engineer (Q5) – £95k–£115k base + 20 % bonus + RSUs.
• Principal Solutions Architect – £110k–£130k base + car allowance.
Equity grants vest over four years (25 % yearly).
What Salary & Benefits Can You Expect in 2025?
• Graduate Data Scientist – £42k base + £3k sign‑on.
• Mid‑Level ML Ops Engineer – £70k–£82k base + 10 % bonus.
• Field Implementation Consultant – £60k–£70k base + travel allowance.
Benefits: private medical, 7 % pension, share‑option scheme, 30 days’ holiday, £1,200 learning budget, mental‑health days, and "work from anywhere" up to four weeks per year.
Remote, Hybrid & Clearance Considerations
• Hybrid Model – Most roles two days on‑site; remote contracts approved for senior ICs.
• Cleared Projects – Cheltenham roles require SC or DV; Quantexa sponsors clearance if eligible.
• Visa Sponsorship – Skilled‑Worker visas for niche ML and Scala talent.
Stand‑Out Application Tips
Quantify Graph Impact – "Boosted AML true‑positive rate 18 % via GNN with 50M nodes."
Show Production‑Ready Code – link to PyPI packages or Spark jobs.
Highlight Domain Knowledge – AML, fraud or telco churn insights add value.
Demonstrate Collaboration – cross‑functional case studies resonate in Values Interview.
How MachineLearningJobs.co.uk Can Help
• We index every Quantexa vacancy every six hours and tag skills like “Graph ML”, “Scala” or “MLOps”.
• Our 2025 UK ML Salary Report benchmarks Quantexa, Databricks, Palantir and Thought Machine.
Set Up a Personal Job Alert
Register with your email.
Select Employer → Quantexa and skill tags.
Choose alert frequency and click Save.
FAQ (2025)
Does Quantexa hire non‑UK nationals?
Yes—remote contracts in EU time zones; visa sponsorship for critical skills.Which languages dominate?
Scala and Java for backend; Python for ML; TypeScript/React for UI.Is graph experience mandatory?
Preferred but not required—company offers graph‑ML bootcamps for new joiners.How long is the hiring loop?
Typically three to five weeks; graduate offers roll out within three weeks post‑assessment.Do I need finance knowledge?
Helpful for AML roles but platform & core ML teams hire domain‑agnostic engineers.
Conclusion: Build Context. Make Better Decisions.
In an AI world flooded with data, context is king—and Quantexa is writing the rulebook. Whether you’re crafting GNNs, scaling Spark pipelines or shaping client solutions, your work will convert noisy data into actionable intelligence that stops crime and unlocks value.
Ready to put machine learning into mission‑critical practice? Browse the latest Quantexa jobs on MachineLearningJobs.co.uk or head to the Quantexa careers portal (quantexa.com/careers). Your next model could change how the world makes decisions.
