Keyrus is an international group of 2,800 consultants and experts across 28 countries, built on a single conviction: AI does not transform businesses. Architected intelligence does.
For more than 30 years, we have been building the data foundations that make intelligent systems work — designing the Operating System of the intelligent enterprise, where intelligence is embedded into the core of business processes to create sustainable value: we operationalise intelligence.
AI does not replace humans. It repositions us to a place no system can follow: understanding, deciding, designing, and creating.
At Keyrus, you will not just develop skills — you will develop judgment. Your expertise sharpens with every system you architect, every client challenge you solve, and every deployment that compounds on the last.
Over time, you grow into one of the rarest professionals of the intelligence era: someone who bridges data, AI, and human decision-making at scale, across industries and geographies. This is not a role you fill. It is a discipline you master and a story you help write to become a Keyrus Architect of Intelligence.
Technology amplifies. Keyrus culture differentiates. Industrial discipline connects the two.
📍 Job location: London – UK (On-site model)
🕒 Contract type: Employee / Fixed-term / Contractor B2B
🗓 Target start date: ASAP
⏰ Working hours: Full-time (40h/ week)
💵 Compensation: £58k – £87k (Senior Level) or £83k – £108k (Principal Level)
As a Data Engineer, you will help organisations transform complexity into measurable outcomes by combining technology, data, intelligence, and human decision-making.
This role is both technical and consultative — ideal for someone who combines hands-on engineering, data architecture, and business collaboration
Build and maintain robust ingestion pipelines for real-time and historical market data, including exchange feeds, vendor sources ( Bloomberg, LSEG/Refinitiv, ICE) and internal sources
Normalise and standardise heterogeneous feeds into consistent internal schemas, so downstream consumers never have to care where the data came from.
Integrate market and reference data with the client's internal systems, such as research libraries, backtesting infrastructure, risk, PnL, and security master
Own the data plumbing that decisions rely on:
Corporate actions
Symbology mapping
Point-in-time accuracy
Gap detection & reconciliation
Model and store time-series and tick data efficiently in ClickHouse and/or kdb+/q, balancing query performance, storage cost, and ingestion throughput
Build monitoring, alerting, and data quality frameworks to proactively detect issues
You are highly detail-oriented and reliability-driven, understanding that data accuracy is critical to business and trading decisions.
You enjoy working with complex, real-time data systems and take pride in making them robust, scalable, and trustworthy.
You think in terms of systems and dependencies, not just individual components.
You are comfortable operating in high-stakes environments where latency, completeness, and correctness matter.
You take strong ownership of the pipelines and systems you build — you don’t just deliver them, you maintain and improve them over time
You can translate technical challenges into clear communication for non-engineering stakeholders, especially in business or trading contexts.
You are pragmatic and focused on delivering what the business actually needs, not just theoretical perfection.
You are comfortable working with large datasets and Linux-based environments
Qualifications & Experience
+5 years working as a Data Engineer
Strong experience building production-grade data pipelines where reliability is critical
Proven exposure to financial market data environments (real-time feeds, formats, vendor data)
Experience working with large-scale datasets
Professional proficiency in English
Technical & Professional Skills
Strong Python skills for data engineering, orchestration, and tooling ( pandas, polars)
Hands-on experience with time-series / columnar analytics databases ( ClickHouse, kdb+/q preferred)
Strong SQL and a solid understanding of time-series data modelling
Comfortable working in Linux environments
Understanding of market data feeds, formats, and vendor ecosystems
Strong ownership mindset with focus on reliability and maintainability
Ability to communicate effectively with business stakeholders
Nice to Have
C/C++ for performance-critical components such as feed handlers or low-latency paths.
Experience with streaming & messaging systems ( Kafka, Solace, Aeron, ZeroMQ)
Knowledge of market data protocols ( FIX, FAST) and formats ( Parquet, Arrow)
Experience working with vendor APIs
Background in financial services/trading environments
You ensure data is accurate, complete, and available when it matters — especially in real-time contexts.
You proactively identify and fix issues through monitoring, alerting, and data quality checks before they impact users.
You design systems with a strong focus on performance, scalability, and resilience
You balance engineering excellence with practical delivery, making smart trade-offs when needed.
You understand the importance of time-series data correctness (e.g. point-in-time accuracy, reconciliation, symbology consistency).
You build solutions that are maintainable and observable, not just functional.
You collaborate effectively with data consumers, analysts, and business stakeholders to ensure systems meet real-world needs.
You continuously improve pipelines, processes, and data quality to support better decision-making
Competitive holiday allowance
Private Medical & Dental Insurance (Bupa)
Group Life Insurance
Gym & fitness discounts via Pluxee (Sodexo)
On-site gym access at our London office
Access to lifestyle discounts (travel, retail, entertainment & more) via Pluxee (Sodexo)
Auto-enrolment pension scheme with Aegon
Training & Development via KLX (Keyrus Learning Experience)
Strong focus on career development and internal mobility
Electric & hybrid car scheme via Tusker
Annual discretionary bonus, based on individual and company performance
Referral bonus for introducing new colleagues.
At Keyrus, salary ranges reflect different levels of mastery and impact within the same role — not different job titles.
Bottom of the range
You meet the core requirements and will need ramp-up time and support.
Middle of the range
You are fully autonomous from Day 1 and deliver consistently.
Top of the range
You are a reference for the role, mentor others, and raise the bar for the team.
Final offers are based on experience, autonomy, scope, and market context, and are discussed transparently during the process.
At Keyrus, all stages of our recruitment process are conducted and evaluated by human recruiters and interviewers.
To support accuracy and efficiency, AI may occasionally be used internally by our team exclusively for note-taking purposes during interviews AI is never used to make decisions.
To ensure fairness, authenticity, and the protection of confidential and proprietary information, the use of AI tools by candidates during the recruitment process is strictly prohibited
Our commitment to responsible AI practices ensures that hiring decisions are based solely on each candidate’s own skills, experience, judgment, and expertise.
⚠️ Any use of AI assistance during the interview process may result in immediate disqualification from the recruitment process.
We are committed to building an inclusive workplace and encourage applications from all backgrounds, regardless of race, ethnicity, gender identity, sexual orientation, age, disability, or any other protected characteristic.
As an international player in consulting and technology, Keyrus is committed to making sense of data by revealing its full potential, particularly from a human perspective.
Our value proposition is built on diverse service groups:
Automation & Artificial Intelligence: We provide our clients with the tools to enhance productivity and accuracy across their processes, allowing them to focus on higher-value work.
Human-Centered Digital Experience: Customer relationships and employee engagement are two of the biggest contributors to business success. We help companies design and create seamless, multimodal digital experiences to achieve their goals.
Data & Analytics Implementation: Data is an undeniable key to business success. When leveraged intelligently, it unlocks unique opportunities to tackle present and future challenges.
Cloud & Security: Cloud computing and digital platforms have the potential to revolutionize how data is transformed into value, taking scalability and flexibility to the next level. We ensure that all your data remains protected and confidential.
Transformation & Innovation: To thrive in today’s ecosystem, businesses must not only accelerate their digital transformation but also develop the skills necessary to enhance adaptability, resilience, and competitiveness. We help our clients successfully transform to build a better future.
With over 3,000 employees and a presence in 28 countries across 4 continents, Keyrus is a leading international expert in data, consulting, and technology.
