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Posted 02 August, 2026

Database Architect - PostgreSQL - Banking | Payments

Strike IT Services
London, ENG, GB Full Time

Job Description

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A leading financial services organisation is looking for an experienced Senior PostgreSQL Database Architect to join a major enterprise payments transformation programme.

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INSIDE IR35
\n HYBRID WORKING - LONDON

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This is not a traditional DBA role. We're looking for someone who can design enterprise-scale PostgreSQL database solutions from first principles, creating logical and physical data models, scalable schemas and high-performance OLTP databases for mission-critical payment systems.

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Responsibilities

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  • Design enterprise PostgreSQL database architecture and schemas.
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  • Create logical and physical data models and ERDs.
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  • Design scalable, high-volume OLTP databases.
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  • Lead database modernisation from Legacy platforms.
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  • Define partitioning, indexing and performance optimisation strategies.
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  • Collaborate with Architects, Engineers and Business stakeholders to deliver enterprise data solutions.
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Essential Skills

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  • Extensive PostgreSQL database architecture and design experience.
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  • Strong logical and physical data modelling expertise.
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  • Enterprise OLTP database design experience.
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  • AWS Aurora PostgreSQL or similar cloud-native PostgreSQL platforms.
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  • Database performance tuning, indexing, partitioning and query optimisation.
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  • Experience with database migration and modernisation programmes.
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  • Financial Services, Banking or Payments experience.
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  • Excellent stakeholder engagement and technical documentation skills.
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Desirable

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  • Mainframe DB2.
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  • Payments platforms (Faster Payments, CHAPS, SEPA, International Payments).
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  • ISO 20022.
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  • Liquibase or Flyway.
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  • Java/Spring Boot.
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  • CloudWatch, Performance Insights and PostgreSQL monitoring.
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  • Financial Services governance and architecture standards.
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This is an excellent opportunity to shape the architecture of a large-scale cloud-native payments platform while working on a high-profile enterprise transformation programme with a strong likelihood of extension.