At a Glance
- Tasks: Design and optimise real-time market data platforms for trading and analytics.
- Company: Join Qbyte Computing, a leading SaaS firm in finance technology.
- Benefits: Competitive salary, profit sharing, and visa sponsorship available.
- Other info: Dynamic role with opportunities to mentor and lead within a collaborative team.
- Why this job: Work with top banks and hedge funds on cutting-edge KX technology.
- Qualifications: 7+ years of kdb+/q development experience and strong analytical skills.
The predicted salary is between 60750 - 74250 £ per year.
Senior KDB+/q Developer
Qbyte Computing Limited is a London-based Software-as-a-Service company working at the intersection of technology and financial markets.
Alongside our own products, we partner with leading banks, hedge funds, trading firms and digital-asset businesses.
The opportunity
We are looking for a Senior KDB+/q Developer to design, build and optimise real-time and historical market data platforms that power trading, analytics and risk across fixed income, cash equities and crypto markets.
You will work closely with traders, quants and technology teams, owning the full kdb+ stack from tick capture to analytics.
This is a senior, hands-on role suited to someone who knows modern kdb+ deeply and can shape architecture as well as write fast, clean q.
Key responsibilities
- Design, build and maintain high-performance kdb+/q systems for real-time and historical market data capture, storage and analytics.
- Architect and extend tick infrastructure (tickerplant, RDB, HDB, gateways, chained tickerplants) for low-latency, high-volume data.
- Build and support platforms on the KX stack, including kdb Insights (Enterprise/SDK) and frameworks such as Tor Q.
- Develop feed handlers and integrations for exchange, venue and broker data, including FIX protocol messages (orders, executions, market data).
- Support algorithmic and electronic trading with real-time analytics, signals, TCA, P&L and order/execution monitoring.
- Optimise queries, memory use, partitioning and storage layouts (attributes, splayed and partitioned tables, compression) for speed and scale.
- Model fixed income, cash market and crypto data, including order books, trades, quotes, curves and reference data.
- Expose kdb+ data to users and systems via APIs, gateways, Python (Py KX), Java, REST or other interfaces.
- Own production quality: monitoring, alerting, capacity planning, incident response and root-cause analysis.
- Lead code reviews, set kdb+ engineering standards and mentor junior and mid-level developers.
- Work with traders, quants, risk and infrastructure teams to turn business requirements into robust solutions.
Essential skills and experience
- Extensive commercial experience (typically 7+ years) developing in kdb+ and q, with deep knowledge of modern kdb+ versions (4. x+) and current KX tooling.
- Hands-on experience with the kdb+ stack in production, specifically kdb Insights and/or Tor Q.
- Strong understanding of kdb+ tick architecture: tickerplant, real-time and historical databases, gateways, load balancing and end-of-day processes.
- Direct experience in at least one of: fixed income (rates, credit, government bonds), cash markets (equities, FX cash) or crypto/digital assets.
- Working knowledge of the FIX protocol, including message types, sessions and order/execution workflows.
- Experience supporting algorithmic or electronic trading platforms, including real-time analytics and execution data.
- Proven ability to tune performance at scale: query optimisation, attributes, partitioning, memory management and IPC.
- Comfortable on Linux, with scripting skills (Bash and/or Python) and experience of version control and CI/CD.
- Clear communicator who can work directly with front-office users and explain technical trade-offs.
Desirable skills
- Py KX, embed Py or other Pythonkdb+ integration, plus Java, C/C++ or Rust for feed handlers.
- Cloud and container experience (AWS, Azure or GCP; Docker; Kubernetes), especially kdb Insights deployments.
- Experience with Kafka, Solace or other messaging and streaming technologies.
- Market microstructure knowledge: order books, liquidity, best execution and transaction cost analysis.
- Crypto exchange connectivity (REST/Web Socket APIs) and on-chain or digital-asset market data.
- Dashboards and visualisation (KX Dashboards, Grafana or similar).
- Degree in Computer Science, Mathematics, Engineering, Physics or a related quantitative field.
- What's on offer
- Visa sponsorship available for suitably qualified candidates.
- Highly competitive salary and profit sharing scheme.
- Great opportunity to work with leading banks, hedge funds, trading firms and digital-asset businesses across the Globe.
- Work on mission-critical, low-latency platforms using the latest KX technology.
Qbyte Computing Limited is an equal opportunities employer and welcomes applications from all qualified candidates.
Senior KDB+ Developer in London employer: Qbyte Computing Limited
Qbyte Computing Limited offers a dynamic work environment where employees can engage with cutting-edge technology in the financial markets. The company fosters collaboration among traders, quants, and technology teams, providing opportunities for professional growth and skill development. Employees have the chance to work on high-performance systems that are critical to trading and analytics across various market sectors.
StudySmarter Expert Advice🤫
We think this is how you could land Senior KDB+ Developer in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Qbyte Computing Limited or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
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✨Tap into Online Developer Communities
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We think you need these skills to ace Senior KDB+ Developer in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Qbyte Computing Limited.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Qbyte Computing Limited and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Qbyte Computing Limited
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Qbyte Computing Limited uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
