Cassandra Jobs in London

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Cassandra Jobs in London

Overview

Looking for Cassandra jobs in London? Discover top IT roles specializing in Apache Cassandra on Haystack, the leading job board for tech professionals. Whether you're an experienced Cassandra developer, database administrator, or data engineer, explore the latest opportunities in London’s thriving tech scene and advance your career today.

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GenAI Python Developer

+5

GenAI Python Developer x4 Location: Hybrid/London Salary: £65k £75k per annumGenAI Python Enterprise AI Platform - Build the core of a next-gen Generative AI ecosystem for a global finance services business.If you re a strong Python engineer who s genuinely excited by the possibilities of GenAI in real enterprise environments, this is a brilliant opportunity. You ll be working on a large-scale Generative AI platform that s reshaping how a major global finance services business builds, deploys, and adopts AI across the business.Expect hands-on engineering, real problem solving, and plenty of collaboration as you help architect, automate, and operationalise LLM-driven services at scale.What You ll Be Doing:

Building backend services and APIs that give secure, governed access to LLM capabilities

Developing Python-based GenAI components including prompt orchestration and evaluation tooling

Integrating LLMs with enterprise systems, observability layers, and security frameworks

Designing and maintaining CI/CD pipelines using Azure DevOps

Working closely with platform leads, architects, and SRE teams to ensure stable, scalable operations

Supporting benchmarking, evaluation, and experiment tracking to measure LLM performance and cost

Contributing to RAG implementations and vector-driven retrieval patterns

Helping shape platform patterns, reusable components, and clear documentation

Troubleshooting performance issues across distributed systems and cloud services

What You ll Bring:

5+ years of backend engineering experience, with strong Python at the core

Hands-on exposure to GenAI technologies and Large Language Models

Practical understanding of LLM evaluation, prompt handling, and operational complexities

A DevOps-first approach with experience in CI/CD, observability, and automation (Azure DevOps preferred)

Confidence working in regulated enterprise environments with tight security controls

Experience integrating AI or ML services into real-world applications

Knowledge of authentication, secret management, networking, and model access governance

Bonus Points For:

Kong API Gateway, Kong Mesh, Flux CD

AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock

RESTful API development with FastAPI, microservices, Terraform, GitOps workflows

Prompt evaluation tools such as Promptfoo

SQL and NoSQL experience: MySQL, PostgreSQL, MongoDB, Cassandra

Exposure to RAG patterns and vector search technologies

What Success Looks Like:

Secure, reusable GenAI components running smoothly in production

Faster engineering delivery through automation and DevOps maturity

High observability and strong evaluation built in from day one

Platform teams and application teams genuinely enjoying what you build

Clean documentation and an onboarding flow that makes adoption effortless

If you re keen to help shape one of the most exciting GenAI platforms in the enterprise world, drop me a message and we can get things moving. Interviews won t stay open for long.

+1

6 months ContractLondon Hybrid or Fully RemoteAn exciting opportunity for a highly skilled Senior Go Developer to join a leading technology business on a contract basis. This organisation is recognised for its engineering excellence and is seeking a Senior Go Developer to help scale distributed systems and deliver high-performance solutions.In this role, the Senior Go Developer will design, develop, and implement data-intensive applications across the full engineering life cycle. You’ll architect and deliver microservices-based systems using Go (Golang), AWS, Kubernetes, Docker, and Kafka, working closely with cross-functional teams to build scalable, reliable, and resilient platforms.You’ll also play a key role in optimising system performance, improving reliability, and ensuring scalability, while contributing to code reviews, design discussions, and knowledge sharing across the engineering function.Senior Go Developer - Key Requirements:

Strong commercial experience in Back End development

Advanced skills in Go (Golang), with proven expertise in AWS, Kubernetes, and Docker

End-to-end software engineering experience, including system design and architecture

Background in complex, large-scale, data-driven applications

Product-focused approach, ideally within fast-paced tech organisations (start-ups or scale-ups)

Knowledge of Kafka, Cassandra, gRPC, and microservices is a strong advantage

Open-source contributions are beneficial

If you’re a Senior Go Developer looking for a challenging 6-month contract with a forward-thinking tech company, apply today.We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation, or age.

+12

We believe in better. And we make it happen. Better content. Better products. And better careers. Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to broadcast, streaming to mobile, SkyQ to Sky Glass, we never stand still. We optimise and innovate. We turn big ideas into the products, content and services millions of people love. And we do it all right here at Sky.The SRE team, is responsible for the implementation and administration of the infrastructure for the Video On Demand (VOD) content. The infrastructure consists of many technology stacks, i.e., AWS, GCP, Cassandra, Kafka, etc. which provides a great opportunity to learn and develop code to implement and administrate the technologiesWhat you’ll do

Be the Lead on multiple delivery projects while work on day-to-day BAU and support tasks.

Proactively create and deliver infrastructure as code to improve the availability, scalability, latency, and efficiency of our internal or customer-facing services

Lead Troubleshooting and problem solving

Create new designs, architectures and standards for new projects or solutions to improve current infrastructure, and contribute to the stability and security of the environment

Help with capacity planning and demand forecasting, software performance analysis and system tuning, defining processes and best practices for reliable and timely delivery

Communicate work status regularly with a clear articulation of design choices along the way.

What you’ll bring

Proven experience in solving technical issues, managing technical projects, and mentoring engineers.

Background working in a multi-technical Site Reliability Engineering (SRE) department, with the ability to break down complex problems and deliver practical solutions.

Strong interpersonal and communication skills for effective collaboration with stakeholders and peers.

Demonstrated ambition and adaptability to thrive in a fast-paced, constantly evolving digital environment.

A solid track record in both technical roles and mentoring responsibilities.

Technical competency in Linux system administration (Ubuntu), monitoring tools (Prometheus, Nagios, Icinga), and cloud platforms (AWS, GCP) including deployment and automation.

Hands-on experience with CDN tools (e.g., Akamai, Fastly), networking (load balancing, routing, switching), databases (SQL/NoSQL, ideally Cassandra), scripting/system programming (Python, Bash, Go, Java), and configuration management (Ansible, Terraform).

Familiarity with CI/CD tools (Jenkins, Concourse, GitLab CI, GitHub Actions) and virtualization technologies (VMWare).Please note that there is an on-call working rota for this role

Please note that there is an on-call working rota for this roleTeam overview Global Streaming Technology Our team develops and supports market-leading video streaming services, underpinned by state-of-the-art engineering principles. We do this at huge scale: for over 50 million customers globally, spanning NBCUniversal Peacock in the US and Sky, NOW and SkyShowtime across Europe. No matter the device, the time or the place, we make sure that our diverse audiences can easily find and enjoy whatever they want to watch, choosing from the world’s best entertainment, news and sport.The rewards There’s one thing people can’t stop talking about when it comes to : the perks. Here’s a taster:

Sky Q, for the TV you love all in one place

The magic of Sky Glass at an exclusive rate

A generous pension package

Private healthcare

Discounted mobile and broadband

A wide range of Sky VIP rewards and experiences

Inclusion & how you’ll work We are a Disability Confident Employer, and welcome and encourage applications from all candidates. We will look to ensure a fair and consistent experience for all, and will make reasonable adjustments to support you where appropriate. Please flag any adjustments you need to your recruiter as early as you can. We’ve embraced hybrid working and split our time between unique office spaces and the convenience of working from home. You’ll find out more about what hybrid working looks like for your role later on in the recruitment process.Your office space Osterley Our Osterley Campus is a 10-minute walk from Syon Lane train station. Or you can hop on one of our free shuttle buses that run to and from Osterley, Gunnersbury, Ealing Broadway and South Ealing tube stations. There are also plenty of bike shelters and showers. On campus, you’ll find 13 subsidised restaurants, cafes, and a Waitrose. You can keep in shape at our subsidised gym, catch the latest shows and movies at our cinema, get your car washed, and even get pampered at our beauty salon.We’d love to hear from you Inventive, forward-thinking minds come together to work in Tech, Product and Data at Sky. It’s a place where you can explore what if, how far, and what next. But better doesn’t stop at what we do, it’s how we do it, too. We embrace each other’s differences. We support our community and contribute to a sustainable future for our business and the planet. If you believe in better, we’ll back you all the way. Just so you know: if your application is successful, we’ll ask you to complete a criminal record check. And depending on the role you have applied for and the nature of any convictions you may have, we might have to withdraw the offer.

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Frequently asked questions

What types of Cassandra jobs are available in London?

London offers a wide range of Cassandra-related roles including Data Engineer, Database Administrator, Backend Developer, and Big Data Architect positions across various industries such as finance, technology, and healthcare.

What skills are required for Cassandra jobs in London?

Key skills often include strong knowledge of Cassandra database architecture, CQL (Cassandra Query Language), Java or Python programming, experience with distributed systems, and familiarity with cloud platforms like AWS or Azure.

Are Cassandra jobs in London remote or on-site?

Many Cassandra roles in London offer flexible working arrangements including fully remote, hybrid, and on-site options depending on the employer and project requirements.

What is the average salary for Cassandra professionals in London?

Salaries vary by experience and role but typically range from £50,000 to £90,000 per year for mid-level Cassandra positions, with senior roles earning upwards of £100,000.

How can I find Cassandra job opportunities in London on Haystack?

You can search for Cassandra jobs in London by using the job search filters on Haystack’s platform, entering 'Cassandra' in the keyword field and selecting 'London' as the location to view the latest relevant job openings.