At a Glance
- Tasks: Design and optimise high-volume, real-time data platforms using Apache Cassandra.
- Company: Join a leading Financial Crime Technology team in a dynamic environment.
- Benefits: Competitive day rate, hybrid work model, and opportunities for professional growth.
- Other info: Contract role until March 2026 with potential for extension.
- Why this job: Make a real impact on fraud detection with cutting-edge NoSQL technology.
- Qualifications: Experience in NoSQL database engineering, particularly with Apache Cassandra.
com**Cassandra Database Engineer - No SQL** (Contract)Duration: Up until 31 March 2026 (Possibility for extension)Location: London/Hybrid (3 days per week on site)Rate: A highly competitive Umbrella Day Rate is available for suitable candidates Role Purpose The Financial Crime Technology team requires specialist Apache Cassandra (No SQL) expertise to support the design and operational readiness of high-volume, real-time data platforms underpinning the fraud detection ecosystem.
This capability does not currently exist in-house, as the team's core expertise is centred on Actimize application engineering, Oracle PL/SQL, and integration middleware (IIB/MQ).
This is a time-bound requirement aligned to specific deliverables, including the real-time payment capture and replay platform and its supporting data infrastructure, rather than a permanent headcount need.
As such, a contract engagement is the most appropriate and cost-effective resourcing model.
Without this role, delivery timelines are at risk, and critical design decisions (such as keyspace design, replication strategy, and capacity planning) may be made without specialist input, increasing the risk of rework and potential production instability.
Develop and optimise data models aligned to query patterns (denormalization , partition key design, avoiding hotspots and wide partitions).
Performance tuning: compaction strategies consistency levels, read/write path optimisation, JVM/GC tuning.
Collaborate with infrastructure and security teams on hardening, encryption (at rest/in transit) and authentication/authorisation (RBAC)Produce technical documentation including data models, runbooks, and operational procedures.
Knowledge & Experience: Degree in Engineering, Computer Science, Business Administration, or a related field.
Proven experience in No SQL database engineering , with strong production expertise in Apache Cassandra.
Strong proficiency in keyspace and table design, data modelling aligned to query patterns, replication strategy, and consistency tuning.
Experience with cluster sizing, capacity planning, and multi deployments.
Strong Linux administration and scripting skills (Bash/Python).
Experience working in regulated or financial services environments with awareness of security hardening, encryption (at rest/in transit) and RBAC.
Exposure to the Actimize platform, messaging middleware (IBM MQ/IIB, Kafka).
Or Oracle Pl/SQL desirable but not mandatory.
Data Stax/Cassandra certification and cloud experience (AWS Keyspaces, Azure Managed Instance for Cassandra) desirable.
Experience working in Agile delivery environments, contributing to ceremonies and cross-functional collaboration.
We will respond to all successful applicants ASAP however, please be advised that we will always look to contact you further from this time should we need further applicants or if other opportunities arise relevant to your skillset.
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.
As part of our standard hiring process to manage risk, please note background screening checks will be conducted on all hires before commencing employment.
We use generative AI tools to support our candidate screening process.
This helps us ensure a fair, consistent, and efficient experience for all applicants.
Database Application Developer in London employer: Adecco
Adecco is an excellent employer, offering a supportive work culture that values flexibility and work-life balance, particularly for the Seasonal DBS Cleaner role in Chelmsford. Employees benefit from a competitive pension scheme and various incentives, alongside opportunities for personal growth and development within a dynamic team environment, making it a rewarding place to contribute to the cleanliness of educational settings.
StudySmarter Expert Advice🤫
We think this is how you could land Database Application Developer in London
✨Tap into Local Tech Meetups
Get yourself to local tech meetups or database management conferences. It's a really great way to meet industry professionals and potentially uncover unadvertised full-time roles. When chatting with people, mention your skills and interests in database management; you never know who might be looking for someone just like you!
✨Contribute to Open Source Projects
Diving into open-source projects can not only sharpen your database skills but also get you noticed by employers. Many companies look for candidates who actively contribute to projects – it shows initiative and a real passion for the field. Plus, it's a perfect excuse to connect with other developers and expand your professional network.
✨Utilise Professional Bodies
Sign up for professional bodies related to database management, like the British Computer Society. They often host events and networking opportunities that can lead directly to job openings in the full-time market. Plus, it adds a nice touch to your professional profile!
✨Showcase Your Skills in a Public Portfolio
As you’re on the hunt for that full-time role, make sure to have a public portfolio that displays your best database projects. This can easily set you apart from the competition. And when you apply for roles, definitely mention it – it shows employers you mean business and are proud of your work!
We think you need these skills to ace Database Application Developer in London
Some tips for your application 🫡
Show off your database skills:When applying for a full-time role in database management, it’s super important to highlight your skills with specific database technologies like SQL, NoSQL, or any relevant data visualisation tools. We want to see how you've used these tools in real projects, so don't shy away from detailing your hands-on experience!
Tailor your CV for data:Make sure your CV is structured clearly, focusing on your previous experience in database management. Use specific metrics to demonstrate your impact, like how you improved data retrieval times or reduced errors. This isn't just about what you've done; it’s about what you’ve achieved with your skills!
Craft a compelling cover letter:In your cover letter, share what excites you about database management and how you can contribute to Adecco. Mention any relevant projects where you tackled challenges or implemented new solutions. Let us know why you want to join our team and how your passion aligns with our goals.
Document your projects:If you've worked on interesting database projects—maybe during your studies or in previous roles—be sure to include those in your application. If you can, link to a portfolio or GitHub repo where we can see examples of your work. Having a tangible showcase of your skills will really make your application stand out!
How to prepare for a job interview at Adecco
✨Brush Up on Database Tools
Make sure you're well-versed with popular database management systems like MySQL, PostgreSQL, or MongoDB. Incorporating real-world examples of how you've used these tools in past projects will show that you can put theory into practice, which is something Adecco will definitely appreciate.
✨Know Your SQL Inside Out
Get ready for some technical questions focused on SQL queries and database design. We should anticipate coding challenges where you might need to optimise queries or design a database schema on the spot. Practising these problems will build our confidence to impress in the interview.
✨Demonstrate Problem-Solving Skills
Besides just technical know-how, be prepared to answer scenario-based questions that test your critical thinking and problem-solving abilities. Think about how you would approach data integrity issues or handle performance bottlenecks — Adecco will want to see your analytical side!
✨Show Your Collaboration Spirit
Since this is a full-time role, it's crucial to highlight how you've collaborated with cross-functional teams or contributed to team projects in the past. Emphasising our interpersonal skills will demonstrate that you’re not just a tech wizard, but also a team player who fits well with Adecco's culture.
