Senior .NET Engineer

Ocho People; Belfast City District; Hybrid; GBP 60,000 - 85,000; Full time

Benefits offered by this job

Hybrid working

Modern Belfast office

Training & development

Job summary

Ocho People in Belfast is seeking a Senior .NET Developer to design, build and scale cloud-native SaaS applications that support global clinical trials. You will help shape architecture and mentor engineers in a fast-growing tech team.

You'll work on .NET (C#, .NET Core) with Azure, SQL Server and APIs, collaborating with product, design and engineering to deliver high-quality solutions that have real-world impact.

Qualifications

• Strong commercial experience with .NET (C#, .NET Core).
• Experience building cloud-based applications using Azure.
• Strong SQL Server performance optimisation.
• Experience with APIs and microservices architectures.
• Exposure to modern front-end technologies (Angular, React, JavaScript).
• Proven ability to mentor and support other engineers.
• Strong problem-solving skills and attention to detail.
• Comfortable working in a collaborative, Agile environment.

Responsibilities

• Design, build and maintain scalable applications using .NET and Azure.
• Contribute to architecture and technical design decisions across new and existing systems.
• Work closely with product, design and engineering teams to deliver high-quality solutions.
• Develop and optimise SQL Server databases for performance and scalability.
• Build and integrate cloud-native services using Azure.
• Mentor junior engineers and support overall team capability.
• Participate in code reviews and drive best practices across the team.
• Troubleshoot and resolve issues to ensure system reliability and performance.

Skills

C#

NET Core

Azure

SQL Server

APIs

Microservices

Front-end

Mentoring

Agile

Tools

CI/CD pipelines

Azure DevOps

Job description

Job Title

Senior .NET Developer

Overview

Ocho is partnering with a high-growth, Belfast-based technology organisation operating at the forefront of clinical research and precision medicine.

This is an opportunity to join a team building a modern SaaS platform that is transforming how global organisations deliver complex clinical trials. You'll work on cloud-native applications that directly support life-changing research, in an environment that combines strong technical leadership with real-world impact.

You'll play a key role in designing, building and scaling high-performance applications, while also acting as a senior voice within the engineering team.

Key Responsibilities

• Design, build and maintain scalable applications using .NET and Azure
• Contribute to architecture and technical design decisions across new and existing systems
• Work closely with product, design and engineering teams to deliver high-quality solutions
• Develop and optimise SQL Server databases for performance and scalability
• Build and integrate cloud-native services using Azure
• Mentor junior engineers and support overall team capability
• Participate in code reviews and drive best practices across the team
• Troubleshoot and resolve issues to ensure system reliability and performance

Person We Are Looking For

• Strong commercial experience with .NET (C#, .NET Core)
• Experience building cloud-based applications using Azure
• Strong SQL Server experience including performance optimisation
• Experience working with APIs and microservices architectures
• Exposure to modern front-end technologies (Angular, React, JavaScript)
• Proven ability to mentor and support other engineers
• Strong problem-solving skills and attention to detail
• Comfortable working in a collaborative, Agile environment

Desirable Experience

• Experience with CI/CD pipelines and DevOps practices
• Exposure to Azure DevOps or similar tooling
• Interest in AI or emerging technologies
• Experience across additional languages or frameworks

Role Details

• Competitive salary and benefits package
• Hybrid working - 3 days in the Belfast office (after initial onboarding)
• Modern office based in Catalyst Belfast
• Strong training and development support
• Opportunity to work on meaningful, real-world technology with global impact