Data Engineer

Citywire; City Of London; On-site; GBP 50,000 - 70,000; Full time

Benefits offered by this job

Generous holiday entitlement

Flexible working options

Annual well-being allowance

Job summary

A leading financial services company in London is seeking a Data Engineer to build and maintain event-driven data pipelines for their Catalyst platform. The ideal candidate will have strong skills in Python and AWS services, with a focus on real-time systems and resilient architectures. This role offers flexible working options and a benefits package that includes generous holiday entitlement and well-being support.

Qualifications

• Proven experience in data engineering or backend development.
• Hands-on use of AWS event-driven services.
• Comfortable working in Linux environments.

Responsibilities

• Build and maintain event-driven data pipelines.
• Design resilient, fault-tolerant workflows using AWS services.
• Implement processors for data consistency across databases.

Skills

Python

AWS services

Event-driven systems

SQL

NoSQL databases

Linux

Tools

Terraform

Git

Job description

Join to apply for the Data Engineer role at Citywire

We’re looking for a Data Engineer with strong Python skills and experience in event-driven systems to join our growing data team. This isn’t your typical “pipelines-for-analysts” role -you’ll be building real-time systems that power applications, tooling, and commercial products across the business.

What you’ll be doing

• Build and maintain event-driven data pipelines that power Citywire’s Catalyst platform.
• Design resilient, fault-tolerant workflows using AWS services such as Lambda, Kinesis, SQS, DynamoDB Streams, and EventBridge.
• Implement processors that ensure data consistency across DynamoDB, PostgreSQL (Aurora), OpenSearch, and BigQuery.
• Modernise legacy batch processes into stream-first architectures.
• Build and integrate APIs to enable smooth publishing and consumption of events across systems.
• Collaborate with engineers on greenfield and existing projects, balancing speed with resilience.
• Take ownership of key pipelines and services, ensuring reliability, performance, and scalability.
• Share best practices and mentor others in event-driven data engineering.

What we’re looking for

• Technical Skills: Proven experience in data engineering or backend development, with solid Python skills and hands-on use of AWS event-driven services.
• Event-Driven Knowledge: Understanding of DLQs, retries, buffering, idempotency, and resilient design patterns.
• Cloud & CI/CD Experience: Familiarity with Terraform, Git-based workflows, and cloud-native deployments.
• Database Skills: Experience with SQL and NoSQL databases such as PostgreSQL, DynamoDB, or OpenSearch.
• Problem-Solver: Comfortable working in Linux environments and confident debugging logs, scripts, and production issues.
• Additional Skills: Exposure to Kafka, Spark, or dbt Core, with an interest in domain-driven data contracts.

We cover - and connect - all sides of the $100 trillion global asset management industry - through our news, events and insights.

Location: London, England, United Kingdom.

Culture and Values

At Citywire, we uphold a culture rooted in honesty, integrity, and fairness, where every voice is valued and heard. Our culture promotes constructive dialogue and collaboration on a global scale.

Benefits

• Generous holiday entitlement: Start with 25 days per annum, increasing to 28 days after three years' service, and 30 days after five years' service, in addition to bank holidays.
• Flexible working options.
• £480 annual allowance for well-being activities or gym memberships, with assistance available for monthly or annual costs.
• Eye-test and glasses allowance.
• Critical illness cover and group life assurance from day one of employment.
• Well-being support: Access to an independent Employee Assistance Programme, available 24/7.
• Cycle to work scheme and annual travel card loans.
• Techscheme: Purchase the latest tech through our employer scheme, spreading the cost over 12 months with National Insurance savings.
• After two years of continuous service, access group income protection, private medical, and dental insurance.

Citywire is an equal opportunities employer.