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Senior Algorithm Engineer (Python / Spark – Distributed Data Processing). Senior Algorithm Engineer (Python / Spark – Distributed Data Processing). We’re hiring a Senior Algorithm Engineer to join a data-intensive SaaS platform operating in a complex, regulated industry.

This is entirely a Python back-end development role (Python 3), where the core framework used is FastAPI and Kafka for the messaging queues. Senior Backend Engineer | Python, FastAPI & Scaling | Security SaaS. Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS.

Senior Software Engineer - Python - London. The business is entering a significant growth phase and is expanding its engineering team.

They are looking for an experienced Python Developer to join the core engineering team and help shape the design, build and deployment of this platform. Strong commercial experience with Python. Develop high-quality Back End services using Python.

We are seeking a highly capable Python-focused Data Engineer to join a delivery-driven team building and supporting complex data platforms in Azure. This role is heavily weighted towards Python software engineering rather than traditional ETL-only work. The successful candidate will be someone who w

Machine Learning Engineer (Python / MLE ). Extensive Python: Very strong, production-level Python coding and debugging skills. We are looking for a number of MLE / Machine Learning Engineers for a critical 6 month contract with a household name.

Full Stack Engineer / Developer (TypeScript React Python) London / WFH to £120k. As a Full Stack Engineer within a small team, you will build and implement new features across the full tech stack, with a focus on frontend development with TypeScript and React but also with exposure to the Python ba

Senior ML Operations Engineer (Python)Salary: Up to £66,000 depending on experience Location: Manchester - (Hybrid working - currently 40% on site increasing to 60% within 12 months)Ref: J13060We are seeking a Senior ML Operations Engineer to take ownership of how machine learning models are deploy

Architect complex systems, owning technical decisions, and crafting Python-powered solutions that make a real impact to customers Principal Python Software Engineer Hybrid - commutable distance of the Southampton area Circa £65k + Up to 15% BonusThe Role As a Principal Python Software Engineer, yo

A leading trading firm in London is seeking a Quant Data Engineer to work on impactful trading projects. This mid-senior level role requires 5+ years of experience with a strong focus on Python and data analysis.

A fast‑growing fintech startup is looking for a Python Software Engineer to join a hyper‑scaling engineering team building AI‑driven financial technology products. Python Software Engineer – Fintech Startup. Strong commercial experience as a Python Software Engineer, focusing on APIs and bac

A forward-thinking tech company in London is seeking a Staff Python Engineer to build and improve backend systems that support advanced AI research. Ideal candidates will have over 5 years of backend engineering experience and a passion for quality and system design.

Candidates should have experience with Python, TypeScript, and cloud platforms such as AWS or GCP. A leading tech company in the UK seeks a Senior Product Engineer to work remotely, with occasional travel to London.

This remote role in the UK requires at least 3 years of experience in software development with a strong proficiency in languages like Go, Python, and Scala.

A leading marketing tech firm in the UK is seeking a Senior Software Engineer with strong backend experience, ideally in Elixir, to join their remote team. You will collaborate with engineers and contribute to innovative product development in a supportive environment.

The ideal candidate will be fluent in Python and have expertise in distributed systems, along with a passion for coaching others in an intellectually stimulating environment.

You will join a small engineering team to work on innovative insurance solutions, contributing primarily in Ruby on Rails and Python. A fast-growing technology business is seeking a Full Stack Engineer for a hybrid role in London.

A leading software provider in Greater London is seeking a passionate Software Engineer to manage and transform large data sets into actionable insights. You will work in an agile team, collaborating with engineers and data scientists, developing systems that enhance the TV experience for UK househo

We're working with a global financial institution on a large-scale engineering programme and are looking for a Senior Java / Python Engineer to deliver high-impact backend systems on AWS, with exposure to modern AI and LLM-based solutions. Designing and building backend services using Java and/or Py

A mental health technology company is seeking a Full-Stack Software Engineer to join their remote team in the UK. In this role, you'll develop, test, and ship full-stack features from end to end using Python and TypeScript.

A sports-focused organisation in Greater London seeks a Python Developer on a contract basis to support the development of data-driven backend systems. In this role, you will develop and maintain Python-based applications and collaborate with various teams to deliver high-quality solutions. Strong c

Candidates should possess strong Python skills, ideally with a background in Data Science or Software Engineering, and experience in MLOps. A leading AI-focused startup in London is seeking an experienced AI Engineer to work on innovative greenfield projects. The role emphasizes Python development,

Formal training or certification on software engineering concepts and applied experience. Proficient in coding in Python and React / TypeScript. We have an exciting and rewarding opportunity for you to take your software engineering career to the next level.

A technology company specializing in supply chain solutions is seeking a Backend Engineer to lead the design and delivery of scalable services. The ideal candidate will have strong proficiency in Python and TypeScript, experience working with cloud technologies, and a passion for technology and prod

You will define the technical vision and work on cloud-native applications using Java, Python, and React on AWS. The ideal candidate has advanced skills in Java and Python, a degree in a related field, and strong knowledge of AWS cloud services. A leading global financial services firm is seeking a

Python Engineer – Institutional Trading Platform. You’ll be part of a small, senior-leaning engineering group responsible for:. Engineers are expected to reason deeply about.

A major financial services firm in the UK is seeking a Lead Software Engineer to enhance, build, and deliver advanced technology products. The role requires advanced coding in Python and cloud-native experience, along with leading creative software solutions and developing secure, high-quality produ

Apexon brings together distinct core competencies – in AI, analytics, app development, cloud, commerce, CX, data, DevOps, IoT, mobile, quality engineering and UX, and our deep expertise in BFSI, healthcare, and life sciences – to help businesses capitalize on the unlimited opportunities digital

A forward-thinking consultancy is seeking a Senior Software Engineer to collaborate with clients in building innovative products. This remote-first role requires skills in JavaScript, Python, and Go while emphasizing scalable architecture design and problem-solving. The successful candidate will thr

A leading market intelligence firm in Greater London is seeking a Full Stack Software Engineer to develop and maintain internal tools that streamline insights delivery.

Senior Full Stack Engineer – Asset Management & Private Markets (Python / React). Python (FastAPI/Django) and/or Node.

Candidates should have strong Python proficiency, experience in financial services applications, and solid software engineering knowledge. A financial technology firm in the United Kingdom is seeking a skilled Front Office Python Developer to join their Quantitative Research and Trading team.

We are looking for a Senior Python Engineer to join our Platform engineering team at Cleo. Software engineering and best practices – proficiency in Python, code quality and maintainability. The right candidate will support our product teams in achieving their OKRs while championing best practices

Ideal candidates will have over 5 years of experience, proficiency in Python, and a strong background in software engineering and Cloud services. A leading financial services firm is seeking a Software Engineer III to join their Corporate and Investment Bank Markets Research Technology team.

What We’re Looking For:*** 5+ years of software engineering experience, partially focused on LLM/AI solutions. Experience with python notebooks in Databricks (or similar tech stack) is essential* Strong hands-on experience with LLM SaaS providers (OpenAI, Claude, Gemini). Proficien

A vibrant technology startup in London seeks a Platform Software Engineer to build and maintain shared services, frameworks, and APIs in Python. Collaborate with engineers to create scalable systems for AI-driven solutions in multifamily real estate.

A leading quantitative trading firm in London is seeking a highly skilled Core Python Developer to enhance their proprietary trading engine. Candidates should have 5+ years in software development, ideally within a trading environment, with strong Python expertise.

ELEKS is a global provider of software engineering and technology consulting services, specializing in Data Science, Mobility, and Financial solutions for industry leaders.

A fast-growing AI startup in London is looking for a Python Developer to join their team and work on developing scalable backend systems and data pipelines. This role offers a unique opportunity to collaborate with top engineers and researchers while contributing to innovative AI solutions. The idea

A legal AI software company is seeking a Senior Python Software Engineer to work closely with enterprise customers on bespoke solutions.

Significant Platform Engineering experience, with demonstrated senior ownership of production platform systems at scale. We’re looking for a Senior I Platform Engineer to join our Database Platform team. As we scale, we need engineers who can simplify complex infrastructure, build guardrails, and

A tech-driven start-up in the UK is seeking a Founding Senior Backend Engineer to architect and implement critical backend systems. The ideal candidate will have over four years of Python experience and a strong background in distributed systems, particularly within early-stage startups.

A London-based fintech company is seeking a Middle Backend Engineer to join their product teams. You will design and build backend services in Python, collaborate with cross-functional teams, and contribute to system improvements. The ideal candidate should have over 2 years of backend experience wi

This is an exciting opportunity for a software engineer passionate about open‑source software, Linux, Golang, Python and Kubernetes. Software Engineer - Python/Golang - Kubernetes. We are hiring a software engineer to join our Kubernetes product team.

A global business and technology transformation partner is seeking a skilled Python/Azure Data Engineer in Greater London. Candidates should have strong expertise in Python and SQL, alongside experience with Azure cloud services.

Candidates should have at least 2 years of experience in software engineering, proficient in Python or TypeScript, and possess strong API design skills. A leading financial data company is seeking a Software Engineer to join their DSAI team.

A leading AI startup in London is looking for a Software Engineer to join their elite engineering team. Candidates should enjoy deep technical challenges, be adaptable, and have experience with technologies like Python, Flask, and GCP.

We are seeking an AI/ML Engineer to contribute to our AI/ML initiatives with a strong emphasis on practical software engineering using Python. Join a cross‑functional, fast‑moving team of engineers, data scientists, and product managers. Design and build production‑grade solutions using LLM pr