Senior Software Developer

Castle Water; Blairgowrie and Rattray; On-site; GBP 90,000 - 140,000; Full time

Job summary

Castle Water in the United Kingdom is seeking a highly experienced Software Engineer to lead the design, development, and delivery of mission-critical financial systems on a modern Microsoft Azure and SQL Server stack.

You will partner with business stakeholders and cross-functional teams to translate complex financial requirements into scalable software, owning the end-to-end lifecycle from architecture to deployment and support.

Qualifications

• Proficient in Java development for large-scale financial systems.
• Strong experience with Microsoft Azure and SQL Server.
• Expertise in data modelling and system integration.

Responsibilities

• Lead the design, development and delivery of mission-critical financial systems.
• Collaborate with business stakeholders and cross-functional teams.
• Own end-to-end lifecycle from architecture through deployment and support.

Skills

Java

Azure

SQL Server

Data Modelling

System Integration

Data Migration

Billing Workflows

High Performance

Security

Job description

We are seeking a highly experienced Software Engineer to lead the design, development, and fdelivery of mission-critical financial systems on a modern Microsoft Azure and SQL Server technology stack. In this role, you will partner directly with business stakeholders, subject matter experts, and cross-functional teams to analyse complex financial problems and translate requirements into scalable, high-performance software solutions. As a senior member of the development team, you will take ownership of the end-to-end development lifecycle—from architecture and design through coding, testing, deployment, and ongoing support—ensuring that our business-critical applications meet the highest standards of quality, reliability, and maintainability.

The ideal candidate will have strong experience in data modelling, system integration, data migration, data integrity and financial systems, with a deep understanding of or willingness to learn about billing workflows.

A Proven track record of delivering high-performance, low-latency, and secure applications in fast-paced environments.

Software development experience in Java with a proven track record in designing, developing, testing and maintaining large-scale financial systems. You will collaborate with cross-functional teams, including business analysts, architects, QA, and other developers, to deliver robust, scalable, and secure software solutions for a critical financial application.