software engineer

Pontoon
London, United Kingdom
Last week
Job Type
Contract
Work Location
Hybrid
Seniority
Senior
Education
Degree
Security Clearance
Required
Posted
13 May 2026 (Last week)

Senior Software Engineer

Engagement: Full‑Time Contractor

Location: London / Hybrid

Length: 12 month contract

Role Summary

We are seeking a software engineer specialising in distributed data systems to design and build low‑latency, high‑volume data processing solutions that underpin regulatory voice compliance assurance across the Bank's strategic data platforms.

This is a hands‑on software development role, focused on event‑driven architectures, streaming pipelines, and scalable data matching engines rather than traditional reporting or BI. You will engineer resilient, production‑grade systems capable of processing high‑frequency voice metadata and transactional records at scale, ensuring accuracy, determinism and auditability in compliance controls.

You will join a team responsible for delivering mission‑critical compliance technology across enterprise voice platforms, operating in a highly regulated environment where correctness, performance and reliability are non‑negotiable.

What You'll Be Building

Distributed streaming and batch data processing systems for voice compliance assurance

Low‑latency record matching and reconciliation engines handling billions of events

Scalable data services operating across Spark, Kafka, Hive and Hadoop

Production‑grade pipelines supporting regulatory evidence, audit and controls

Foundations for near‑real‑time compliance signal generation across global voice platforms

Key Responsibilities

Design and develop high‑performance distributed systems for large‑scale voice data processing

Build and optimise Spark‑based processing jobs for high‑volume and high‑frequency workloads

Engineer Kafka‑based streaming pipelines with strong delivery guarantees and low end‑to‑end latency

Develop robust data matching and reconciliation logic across heterogeneous voice data sources

Define and implement scalable data models using Hive and Hadoop ecosystems

Apply software engineering best practices: version control, code reviews, testing, CI/CD and documentation

Reverse‑engineer and modernise legacy batch or reporting‑oriented implementations

Implement data quality, integrity, lineage and auditability controls required for regulatory assurance

Partner with platform, vendor and voice engineering teams to align data semantics and system behaviour

Support synthetic data generation and large‑scale performance testing

Deliver changes through controlled environments in line with enterprise change and release processes

Required Technical Experience

Core Technologies

Strong hands‑on development experience with Apache Spark

Proven experience building Kafka‑based event streaming systems

Deep familiarity with Hadoop ecosystems, including Hive

Advanced SQL for complex, large‑scale datasetsEngineering Capabilities

Experience designing low‑latency, high‑throughput data pipelines

Strong understanding of distributed systems, data partitioning, fault tolerance and scalability

Ability to distinguish and design appropriately for high‑frequency transactional vs high‑volume batch workloads

Experience building ETL / ELT systems as production software, not ad‑hoc scripts

Comfortable working close to infrastructure and platform constraintsNice to Have

Exposure to voice or communications platforms (e.g. Cisco, NICE, IPC, Microsoft)

Experience working in regulated or compliance‑driven environments

Familiarity with Agile delivery models and iterative software development

TO APPLY - PLEASE APPLY WITH AN UP-TO-DATE CV

Candidates will ideally show evidence of the above in their CV in order to be considered.

Please be advised if you haven't heard from us within 48 hours then unfortunately your application has not been successful on this occasion, we may however keep your details on file for any suitable future vacancies and contact you accordingly.

*Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone's chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.

We use generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention

Related Jobs

View all jobs

Software Engineer

Faculty AI London, United Kingdom
Hybrid

Software Engineer

Faculty AI London, United Kingdom
Remote Clearance Required

Software Engineer, Front End Leaning (Tech Lead level)

Synthesia London, United Kingdom
Hybrid

Software Engineer (Principal level)

Synthesia London, United Kingdom
Hybrid

Software Engineer, Front End Leaning (Accessibility)

Synthesia London, United Kingdom
Remote

Senior Software Engineer, Chem-Bio

AI Security Institute London, United Kingdom
On-site Clearance Required

Industry Insights

Discover insightful articles, industry insights, expert tips, and curated resources.

Where to Advertise Data Science Jobs in the UK (2026 Guide)

Where to advertise data science jobs UK in 2026: the specialist boards, communities and channels that actually reach senior and lead data science talent. Data science spans a broad and often misunderstood spectrum — from statistical modelling and experimental design through to machine learning engineering, product analytics and AI research. The strongest candidates identify firmly with specific subdisciplines and are frustrated by adverts that conflate data scientist with data analyst, business intelligence developer or machine learning engineer. General job boards produce high application volumes for data roles but consistently fail to match specialist data science profiles with the right opportunities. This guide, published by DataScienceJobs.co.uk, covers where to advertise data science roles in the UK in 2026, how the main platforms compare, what employers should expect to pay, and what the data says about hiring across different role types.

Data Science Jobs UK 2026: What to Expect Over the Next 3 Years

Data Science Jobs UK 2026: roles, salaries and the trends shaping UK data science hiring over the next three years — from MLE crossover to GenAI workflows. Data science has spent the past decade being described as the sexiest job of the twenty-first century. By 2026, the reality is both more nuanced and more interesting than that label ever suggested. The discipline has matured, fragmented, deepened, and in some respects reinvented itself — and the jobs market has changed with it in ways that create genuine opportunity for those who understand what employers actually want, and genuine difficulty for those still operating on assumptions formed five years ago. The data science jobs market of 2026 is not simply a larger version of what it was three years ago. The generalist data scientist — equally comfortable wrangling data, building models, and presenting insights to the board — is giving way to a more specialised landscape where employers know exactly what problem they are trying to solve and are looking for candidates with the specific depth to solve it. Machine learning engineering, causal inference, experimentation, AI product development, and domain-specific applied science have all emerged as distinct career tracks within what was previously a single, loosely defined profession. At the same time, the arrival of large language models and the broader AI capability wave has both threatened and created data science roles in equal measure. Some of the work that junior data scientists spent their early careers doing — data cleaning, exploratory analysis, basic model building — is being partially automated by AI tooling. But the demand for practitioners who can evaluate AI systems rigorously, apply statistical thinking to complex business problems, and build the data foundations on which AI depends has grown considerably. The candidates who will thrive over the next three years are those who understand where the discipline is heading — which specialisms are attracting the most investment, which technologies are reshaping what data scientists are expected to build and know, and how to position a data science career that will remain valuable as the field continues to evolve around them. This article breaks down what the UK data science jobs market is likely to look like through to 2028 — covering the titles emerging right now, the technologies driving employer demand, the skills that will matter most, and how to position your career ahead of the curve.

New Data Science Employers to Watch in 2026: UK and International Companies Leading Analytics and AI Innovation

New Data Science Employers to Watch in 2026: a UK and international shortlist of analytics and AI companies hiring data scientists, ML engineers and analysts. Data science has emerged as one of the most transformative forces across industries, turning raw information into actionable insights, predictive models, and AI-powered solutions. In 2026, the UK is witnessing a surge in organisations where data science is not just a support function but the core of their products and services. For professionals exploring opportunities on www.DataScience-Jobs.co.uk , identifying these employers early can provide a competitive advantage in a market with high demand for advanced analytics and machine learning expertise. This article highlights new and high-growth data science employers to watch in 2026, focusing on UK startups, scale-ups, and global firms expanding their data science operations locally. All of the companies included have recently raised investment, won high-profile contracts, or significantly scaled their analytics teams.