C# Developer

Goodman Masson; Greater London; Hybrid; GBP 64,000 - 86,000; Full time

Job summary

Goodman Masson is partnering with a high-growth wealth management client in Central London to hire a Backend Developer (C#) for a hybrid role. You will build robust backend services, data integration pipelines, and secure RESTful APIs to enable cross-application communication.

The ideal candidate has 5+ years of backend engineering experience, strong C#/.NET and SQL Server skills, and a track record delivering on tight sprint timelines within financial services.

Qualifications

• 5+ years of backend engineering experience preferred.
• Experience in Financial Services (Wealth/Asset management or Banking) preferred.
• Strong C#/.NET and SQL Server (T-SQL) skills.
• Knowledge of building scalable APIs and event-driven data architectures.
• Experience with messaging queues (RabbitMQ, Kafka) is a plus.

Responsibilities

• Back-end focus delivering a business-critical integration programme on tight deadlines.
• Design and maintain robust data flows and integration pipelines between internal platforms and external systems.
• Build and consume production-grade, secure RESTful APIs and backend services.
• Handle complex DB tasks including T-SQL queries and indexing.
• Apply CI/CD practices with Azure DevOps to keep systems resilient and auditable.

Skills

C# / .NET

SQL Server

RESTful APIs

Azure DevOps

Event-driven architecture

RabbitMQ

Kafka

Backend development

Performance tuning

Tools

Azure DevOps

SQL Server

Job description

Backend Developer (C#) - £75k - Central London (Hybrid)

We are partnering with a highly successful, international Wealth Management firm. The business has a complex, dual-era technology ecosystem and are currently undergoing major growth.

Historically, their team has managed a wide tech stack. They are now looking for an experienced, back end engineer to join the team.

Key Responsibilities:

• This role sits largely on the backend, focusing heavily on executing a business-critical integration programme to meet strict upcoming deadlines.
• Own the design, maintenance, and execution of robust data flows and integration pipelines, securely connecting core internal platforms and external third-party systems.
• Build and consume production-grade, highly secure RESTful APIs and modern backend Web Services to allow seamless cross-application communication.
• Handle complex database engineering tasks within a high-throughput environment, writing performance-tuned SQL Server (T-SQL) queries, stored procedures, and managing data indexing.
• Utilise robust software engineering principles—including automated CI/CD pipelines via Azure DevOps—to ensure all backend systems remain resilient, fully auditable, and secure by design.

Your Background:

• 5+ years of backend engineering experience is highly preferred.
• Prior experience within Financial Services (Wealth Management, Asset Management, or Banking) is strongly preferred.
• Exceptional, hands-on coding capability in C# and the .NET framework, combined with advanced relational database proficiency in SQL Server (T-SQL).
• Strong familiarity with building scalable APIs and working with event-driven data architectures or messaging queues (e.g., RabbitMQ, Kafka).
• You must be highly delivery-oriented, comfortable navigating tight sprint timelines, and able to work independently to unblock complex backend issues.

This is a high-impact, dynamic role within a highly successful organisation