Senior Developer .NET - Fintech - Remote

Wealth Dynamix; United Kingdom; Remote; GBP 50,000 - 75,000; Full time

Job summary

A leading FinTech firm in the UK is looking for a Senior Developer .NET to design and maintain integrations within their platform. The successful candidate will join a dynamic team and contribute to enhancing their Client Lifecycle Management solutions. Ideal applicants are analytical self-starters with robust .NET experience and a passion for advancing financial technology. Flexible work arrangements are supported.

Benefits

Investment in employee learning and development

Flexible working arrangements

Career progression opportunities

Qualifications

• Analytical self-starter with experience in .NET software development.
• Experience working through complex integrations and migrations.
• Familiarity with REST, SOAP, and other integration methods.

Responsibilities

• Design and implement secure data exchanges between CLMi and external platforms.
• Coordinate development workflows between analysts, developers, and DevOps teams.
• Monitor and optimize system performance.

Skills

Proficiency with .NET Core / .NET 3 / C#

Experience with RESTful APIs and Postman

Strong data analysis capability

Excellent analytical and problem-solving skills

Experience in the financial sector

Tools

RabbitMQ

Azure Service Bus

SQL (PostgreSQL)

Job description

Senior Developer .NET - Fintech – Remote

Senior Developer .NET wanted as our team is growing fast!

Calling highly motivated, bright candidates who are looking for a career at an exciting award winning FinTech firm!

Company: Wealth Dynamix

Role: Senior Developer .NET

Location: London

Start Date: ASAP

Would you like to join one of the fastest growing FinTech firms in Europe? We are looking for an analytical self-starter with experience in Dotnet (.NET) software development. If you are passionate about digital transformation and keen to learn about delivering the market leading Client Lifecycle Managing solution to the Wealth Management industry, apply now!

Who are we?

• Wealth Dynamix helps to relieve the burden of client management issues for wealth management and private banking firms with innovative technology.
• We provide Relationship Managers with a multi-award winning digital Client Lifecycle Management (CLM) platform, offering 360-degree access to their client.
• We are a global leader in end-to-end CLM, Wealth Dynamix has offices and clients in three continents with headquarters in the UK.

What is the role?

The .NET Integration Developer will join the CLMi Engineering Team to design, build, and maintain integrations between the CLMi platform and external systems across the private banking ecosystem. Following the successful delivery of this integration, you will contribute to additional backend and integration projects across the CLMi platform, supporting our mission to deliver a secure, scalable, and high-performance financial technology solution.

Integration Design & Development

• Design and implement secure data exchanges between CLMi and external platforms.
• Develop robust API connectivity, authentication, data mapping, and performance monitoring processes.
• Collaborate with analysts and users to perform data analysis and create detailed integration specifications.
• Develop new functionalities for existing CLMi backend services while maintaining full system functionality.
• Extend and enhance RESTful APIs to support evolving business needs.

Code Quality & Maintenance

• Write idiomatic, tested, scalable, and well-documented .NET code.
• Revise, refactor, and debug existing code to ensure system reliability.
• Participate in code reviews to maintain high engineering standards.

Performance & Security

• Ensure high performance, reliability, and security of all integration and backend systems.
• Monitor and optimize system performance, addressing potential bottlenecks and scaling challenges.
• Uphold security best practices to protect systems, data, and people.

Workflow Coordination

• Coordinate development workflows between analysts, web developers, and DevOps teams.
• Participate in daily scrum activities, sprint planning, and retrospectives to drive continuous improvement.

Data Management

• Develop and maintain data audit, archiving, and restoration processes.

Feature Development Responsibilities

• The initial focus will be on integrating CLMi with the Client data aggregation platform, which consolidates account and portfolio data from multiple custodians. This integration enables CLMi users to view enriched holdings, transactions, and performance data directly within the system.

Why should you apply?

• This is a fantastic opportunity to work in a growing FinTech environment with excellent career progression available.
• With a global client base the role offers an opportunity to experience a wide variety of digital transformation projects – each with their own unique requirements and opportunities.
• We take career progression seriously, with investment into the WDX Academy for new and existing employee learning and development.
• You will have the flexibility to work from home, in the office or remotely.

Who is best suited to this role?

Technical Skills

• Proficiency with .NET Core / .NET 3 / C#.
• Experience working through complex, high-volume, high-frequency integrations and migrations using bespoke .NET solutions.
• Deep experience with RESTful APIs and Postman.
• Proven experience integrating with external APIs and third-party systems.
• Familiarity with multiple integration methods, including REST, SOAP, Webhooks, and FTP file-based exchanges (e.g., CSV, XML).
• Experience developing with AMQP tools such as RabbitMQ, Azure Service Bus, etc.
• Expertise in field mapping of interfaces and data transformation.
• Skilled in writing unit and system tests for large data volumes.

Soft Skills

• Strong data analysis capability and exceptional attention to detail.
• Excellent analytical, problem‑solving, written, and verbal communication skills.
• A proactive, solutions‑oriented mindset, willing to challenge the status quo and drive improvements.

Beneficial Skills

• Experience in the financial sector or similar data-sensitive environments.
• Familiarity with Microsoft Azure and related services (Azure Service Bus, Key Vault, Table Storage, Cognitive Services).
• Knowledge of SQL (PostgreSQL) including data modelling, performance optimisation, and security.
• Experience with Kafka and event-driven architectures.
• Exposure to enterprise integration tools such as Informatica, BizTalk, MuleSoft, or TIBCO, with an understanding of their integration patterns and best practices.

Why should you apply?

• This is a fantastic opportunity to work in a growing FinTech environment with excellent career progression available.
• With a global client base the role offers an opportunity to experience a wide variety of digital transformation projects – each with their own unique requirements and opportunities.
• We take career progression seriously, with investment into the WDX Academy for new and existing employee learning and development.
• Incredible learning opportunity with exposure to multiple complex client needs.

We believe we offer career defining opportunities and are on a journey that will build awesome memories in a diverse and inclusive culture. If you are looking for more than just a job, get in touch.